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First implementation

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Cyrille Nofficial
2020-02-08 22:35:47 +01:00
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FROM --platform=$BUILDPLATFORM golang:alpine AS builder
ARG TARGETPLATFORM
ARG BUILDPLATFORM
WORKDIR /go/src
ADD . .
RUN GOOS=$(echo $TARGETPLATFORM | cut -f1 -d/) && \
GOARCH=$(echo $TARGETPLATFORM | cut -f2 -d/) && \
GOARM=$(echo $TARGETPLATFORM | cut -f3 -d/ | sed "s/v//" ) && \
CGO_ENABLED=0 GOOS=${GOOS} GOARCH=${GOARCH} GOARM=${GOARM} go build -mod vendor -tags netgo ./cmd/rc-steering/
FROM gcr.io/distroless/static
USER 1234
COPY --from=builder /go/src/rc-steering /go/bin/rc-steering
ENTRYPOINT ["/go/bin/rc-steering"]

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.PHONY: test docker
DOCKER_IMG = cyrilix/robocar-steering
test:
go test -race -mod vendor ./cmd/rc-steering ./part
docker:
docker buildx build . --platform linux/arm/7,linux/arm64,linux/amd64 -t ${DOCKER_IMG} --push

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# robocar-steering
Microservice part to manage steering
## Usage
```
rc-steering <OPTIONS>
-mqtt-broker string
Broker Uri, use MQTT_BROKER env if arg not set (default "tcp://127.0.0.1:1883")
-mqtt-client-id string
Mqtt client id, use MQTT_CLIENT_ID env if args not set (default "robocar-steering")
-mqtt-password string
Broker Password, MQTT_PASSWORD env if args not set
-mqtt-qos int
Qos to pusblish message, use MQTT_QOS env if arg not set
-mqtt-retain
Retain mqtt message, if not set, true if MQTT_RETAIN env variable is set
-mqtt-topic-drive-mode string
Mqtt topic that contains DriveMode value, use MQTT_TOPIC_DRIVE_MODE if args not set
-mqtt-topic-rc-steering string
Mqtt topic that contains RC steering value, use MQTT_TOPIC_RC_STEERING if args not set
-mqtt-topic-steering string
Mqtt topic to publish steering result, use MQTT_TOPIC_STEERING if args not set
-mqtt-topic-tf-steering string
Mqtt topic that contains tenorflow steering value, use MQTT_TOPIC_TF_STEERING if args not set
-mqtt-username string
Broker Username, use MQTT_USERNAME env if arg not set
```
## Docker build
```bash
export DOCKER_CLI_EXPERIMENTAL=enabled
docker buildx build . --platform linux/amd64,linux/arm/7,linux/arm64 -t cyrilix/robocar-steering
```

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module github.com/cyrilix/robocar-steering
go 1.13
require (
github.com/cyrilix/robocar-base v0.0.0-20200128185221-fee4454c12c7
github.com/cyrilix/robocar-protobuf/go v0.0.0-20200101000356-accf7184079a
github.com/eclipse/paho.mqtt.golang v1.2.0
github.com/golang/protobuf v1.3.2
github.com/sirupsen/logrus v1.2.0
golang.org/x/net v0.0.0-20191209160850-c0dbc17a3553 // indirect
)

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github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
github.com/satori/go.uuid v1.2.0/go.mod h1:dA0hQrYB0VpLJoorglMZABFdXlWrHn1NEOzdhQKdks0=
github.com/sirupsen/logrus v1.2.0/go.mod h1:LxeOpSwHxABJmUn/MG1IvRgCAasNZTLOkJPxbbu5VWo=
github.com/spf13/pflag v1.0.3/go.mod h1:DYY7MBk1bdzusC3SYhjObp+wFpr4gzcvqqNjLnInEg4=
github.com/stretchr/objx v0.1.1/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
github.com/testcontainers/testcontainers-go v0.0.9/go.mod h1:0Qe9qqjNZgxHzzdHPWwmQ2D49FFO7920hLdJ4yUJXJI=
golang.org/x/crypto v0.0.0-20180904163835-0709b304e793/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
golang.org/x/lint v0.0.0-20181026193005-c67002cb31c3/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE=
golang.org/x/net v0.0.0-20180826012351-8a410e7b638d/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
golang.org/x/net v0.0.0-20180906233101-161cd47e91fd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
golang.org/x/net v0.0.0-20191126235420-ef20fe5d7933/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
golang.org/x/net v0.0.0-20191209160850-c0dbc17a3553/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sys v0.0.0-20180830151530-49385e6e1522/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20180905080454-ebe1bf3edb33/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20180909124046-d0be0721c37e/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20181228144115-9a3f9b0469bb/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
golang.org/x/time v0.0.0-20181108054448-85acf8d2951c/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
golang.org/x/tools v0.0.0-20180810170437-e96c4e24768d/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
golang.org/x/tools v0.0.0-20180828015842-6cd1fcedba52/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM=
google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
google.golang.org/grpc v1.17.0/go.mod h1:6QZJwpn2B+Zp71q/5VxRsJ6NXXVCE5NRUHRo+f3cWCs=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys=
gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gotest.tools v0.0.0-20181223230014-1083505acf35/go.mod h1:R//lfYlUuTOTfblYI3lGoAAAebUdzjvbmQsuB7Ykd90=
honnef.co/go/tools v0.0.0-20180728063816-88497007e858/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=

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part/part.go Normal file
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package part
import (
"github.com/cyrilix/robocar-base/service"
"github.com/cyrilix/robocar-protobuf/go/events"
mqtt "github.com/eclipse/paho.mqtt.golang"
"github.com/golang/protobuf/proto"
log "github.com/sirupsen/logrus"
"sync"
)
func NewPart(client mqtt.Client, steeringTopic, driveModeTopic, rcSteeringTopic, tfSteeringTopic string) *SteeringPart {
return &SteeringPart{
client: client,
steeringTopic: steeringTopic,
driveModeTopic: driveModeTopic,
rcSteeringTopic: rcSteeringTopic,
tfSteeringTopic: tfSteeringTopic,
driveMode: events.DriveMode_USER,
}
}
type SteeringPart struct {
client mqtt.Client
steeringTopic string
muDriveMode sync.RWMutex
driveMode events.DriveMode
cancel chan interface{}
driveModeTopic, rcSteeringTopic, tfSteeringTopic string
}
func (p *SteeringPart) Start() error {
if err := registerCallbacks(p); err != nil {
log.Infof("unable to rgeister callbacks: %v", err)
return err
}
p.cancel = make(chan interface{})
<-p.cancel
return nil
}
func (p *SteeringPart) Stop() {
close(p.cancel)
service.StopService("throttle", p.client, p.driveModeTopic, p.rcSteeringTopic, p.tfSteeringTopic)
}
func (p *SteeringPart) onDriveMode(_ mqtt.Client, message mqtt.Message) {
var msg events.DriveModeMessage
err := proto.Unmarshal(message.Payload(), &msg)
if err != nil {
log.Errorf("unable to unmarshal protobuf %T message: %v", msg, err)
return
}
p.muDriveMode.Lock()
defer p.muDriveMode.Unlock()
p.driveMode = msg.GetDriveMode()
}
func (p *SteeringPart) onRCSteering(_ mqtt.Client, message mqtt.Message) {
p.muDriveMode.RLock()
defer p.muDriveMode.RUnlock()
log.Debugf("receive steering message from radio command: %v",message)
if p.driveMode == events.DriveMode_USER {
// Republish same content
payload := message.Payload()
publish(p.client, p.steeringTopic, &payload)
}
}
func (p *SteeringPart) onTFSteering(_ mqtt.Client, message mqtt.Message) {
p.muDriveMode.RLock()
defer p.muDriveMode.RUnlock()
log.Debugf("receive steering message from tensorflow: %v",message)
if p.driveMode == events.DriveMode_PILOT {
// Republish same content
payload := message.Payload()
publish(p.client, p.steeringTopic, &payload)
}
}
var registerCallbacks = func(p *SteeringPart) error {
err := service.RegisterCallback(p.client, p.driveModeTopic, p.onDriveMode)
if err != nil {
return err
}
err = service.RegisterCallback(p.client, p.rcSteeringTopic, p.onRCSteering)
if err != nil {
return err
}
err = service.RegisterCallback(p.client, p.tfSteeringTopic, p.onTFSteering)
if err != nil {
return err
}
return nil
}
var publish = func(client mqtt.Client, topic string, payload *[]byte) {
client.Publish(topic, 0, false, *payload)
}

116
part/part_test.go Normal file
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package part
import (
"github.com/cyrilix/robocar-base/testtools"
"github.com/cyrilix/robocar-protobuf/go/events"
mqtt "github.com/eclipse/paho.mqtt.golang"
"github.com/golang/protobuf/proto"
"sync"
"testing"
"time"
)
func TestDefaultSteering(t *testing.T) {
oldRegister := registerCallbacks
oldPublish := publish
defer func() {
registerCallbacks = oldRegister
publish = oldPublish
}()
registerCallbacks = func(p *SteeringPart) error {
return nil
}
var muEventsPublished sync.Mutex
eventsPublished := make(map[string][]byte)
publish = func(client mqtt.Client, topic string, payload *[]byte) {
muEventsPublished.Lock()
defer muEventsPublished.Unlock()
eventsPublished[topic] = *payload
}
steeringTopic := "topic/steering"
driveModeTopic := "topic/driveMode"
rcSteeringTopic := "topic/rcSteering"
tfSteeringTopic := "topic/tfSteering"
p := NewPart(nil, steeringTopic, driveModeTopic, rcSteeringTopic, tfSteeringTopic)
cases := []struct {
driveMode events.DriveModeMessage
rcSteering events.SteeringMessage
tfSteering events.SteeringMessage
expectedSteering events.SteeringMessage
}{
{
events.DriveModeMessage{DriveMode: events.DriveMode_USER},
events.SteeringMessage{Steering: 0.3, Confidence: 1.0},
events.SteeringMessage{Steering: 0.4, Confidence: 1.0},
events.SteeringMessage{Steering: 0.3, Confidence: 1.0},
},
{
events.DriveModeMessage{DriveMode: events.DriveMode_PILOT},
events.SteeringMessage{Steering: 0.5, Confidence: 1.0},
events.SteeringMessage{Steering: 0.6, Confidence: 1.0},
events.SteeringMessage{Steering: 0.6, Confidence: 1.0},
},
{
events.DriveModeMessage{DriveMode: events.DriveMode_PILOT},
events.SteeringMessage{Steering: 0.4, Confidence: 1.0},
events.SteeringMessage{Steering: 0.7, Confidence: 1.0},
events.SteeringMessage{Steering: 0.7, Confidence: 1.0},
},
{
events.DriveModeMessage{DriveMode: events.DriveMode_USER},
events.SteeringMessage{Steering: 0.5, Confidence: 1.0},
events.SteeringMessage{Steering: 0.8, Confidence: 1.0},
events.SteeringMessage{Steering: 0.5, Confidence: 1.0},
},
{
events.DriveModeMessage{DriveMode: events.DriveMode_USER},
events.SteeringMessage{Steering: 0.4, Confidence: 1.0},
events.SteeringMessage{Steering: 0.9, Confidence: 1.0},
events.SteeringMessage{Steering: 0.4, Confidence: 1.0},
},
{
events.DriveModeMessage{DriveMode: events.DriveMode_USER},
events.SteeringMessage{Steering: 0.6, Confidence: 1.0},
events.SteeringMessage{Steering: -0.3, Confidence: 1.0},
events.SteeringMessage{Steering: 0.6, Confidence: 1.0},
},
}
go p.Start()
defer func() { close(p.cancel) }()
for _, c := range cases {
p.onDriveMode(nil, testtools.NewFakeMessageFromProtobuf(driveModeTopic, &c.driveMode))
p.onRCSteering(nil, testtools.NewFakeMessageFromProtobuf(rcSteeringTopic, &c.rcSteering))
p.onTFSteering(nil, testtools.NewFakeMessageFromProtobuf(tfSteeringTopic, &c.tfSteering))
time.Sleep(10 * time.Millisecond)
for i := 3; i >= 0; i-- {
var msg events.SteeringMessage
muEventsPublished.Lock()
err := proto.Unmarshal(eventsPublished[steeringTopic], &msg)
if err != nil {
t.Errorf("unable to unmarshall response: %v", err)
t.Fail()
}
muEventsPublished.Unlock()
if msg.GetSteering() != c.expectedSteering.GetSteering() {
t.Errorf("bad msg value for mode %v: %v, wants %v",
c.driveMode, msg.GetSteering(), c.expectedSteering.GetSteering())
}
if msg.GetConfidence() != 1. {
t.Errorf("bad throtlle confidence: %v, wants %v", msg.GetConfidence(), 1.)
}
time.Sleep(1 * time.Millisecond)
}
}
}

201
vendor/github.com/cyrilix/robocar-base/LICENSE generated vendored Normal file
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@ -0,0 +1,201 @@
Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
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"License" shall mean the terms and conditions for use, reproduction,
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119
vendor/github.com/cyrilix/robocar-base/cli/cli.go generated vendored Normal file
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@ -0,0 +1,119 @@
package cli
import (
"flag"
"fmt"
"github.com/cyrilix/robocar-base/service"
MQTT "github.com/eclipse/paho.mqtt.golang"
"log"
"os"
"os/signal"
"strconv"
"syscall"
)
func SetDefaultValueFromEnv(value *string, key string, defaultValue string) {
if os.Getenv(key) != "" {
*value = os.Getenv(key)
} else {
*value = defaultValue
}
}
func SetIntDefaultValueFromEnv(value *int, key string, defaultValue int) error {
var sVal string
if os.Getenv(key) != "" {
sVal = os.Getenv(key)
val, err := strconv.Atoi(sVal)
if err != nil {
log.Printf("unable to convert string to int: %v", err)
return err
}
*value = val
} else {
*value = defaultValue
}
return nil
}
func SetFloat64DefaultValueFromEnv(value *float64, key string, defaultValue float64) error {
var sVal string
if os.Getenv(key) != "" {
sVal = os.Getenv(key)
val, err := strconv.ParseFloat(sVal, 64)
if err != nil {
log.Printf("unable to convert string to float: %v", err)
return err
}
*value = val
} else {
*value = defaultValue
}
return nil
}
func HandleExit(p service.Part) {
signals := make(chan os.Signal, 1)
signal.Notify(signals, os.Kill, os.Interrupt, syscall.SIGTERM)
go func() {
<-signals
p.Stop()
os.Exit(0)
}()
}
func InitMqttFlagSet(flagSet *flag.FlagSet, defaultClientId string, mqttBroker, username, password, clientId *string, mqttQos *int, mqttRetain *bool) {
SetDefaultValueFromEnv(clientId, "MQTT_CLIENT_ID", defaultClientId)
SetDefaultValueFromEnv(mqttBroker, "MQTT_BROKER", "tcp://127.0.0.1:1883")
flagSet.StringVar(mqttBroker, "mqtt-broker", *mqttBroker, "Broker Uri, use MQTT_BROKER env if arg not set")
flagSet.StringVar(username, "mqtt-username", os.Getenv("MQTT_USERNAME"), "Broker Username, use MQTT_USERNAME env if arg not set")
flagSet.StringVar(password, "mqtt-password", os.Getenv("MQTT_PASSWORD"), "Broker Password, MQTT_PASSWORD env if args not set")
flagSet.StringVar(clientId, "mqtt-client-id", *clientId, "Mqtt client id, use MQTT_CLIENT_ID env if args not set")
flagSet.IntVar(mqttQos, "mqtt-qos", *mqttQos, "Qos to pusblish message, use MQTT_QOS env if arg not set")
flagSet.BoolVar(mqttRetain, "mqtt-retain", *mqttRetain, "Retain mqtt message, if not set, true if MQTT_RETAIN env variable is set")
}
func InitMqttFlags(defaultClientId string, mqttBroker, username, password, clientId *string, mqttQos *int, mqttRetain *bool) {
InitMqttFlagSet(flag.CommandLine, defaultClientId, mqttBroker, username, password, clientId, mqttQos, mqttRetain)
}
func InitIntFlag(key string, defValue int) int {
var value int
err := SetIntDefaultValueFromEnv(&value, key, defValue)
if err != nil {
log.Panicf("invalid int value: %v", err)
}
return value
}
func InitFloat64Flag(key string, defValue float64) float64 {
var value float64
err := SetFloat64DefaultValueFromEnv(&value, key, defValue)
if err != nil {
log.Panicf("invalid value: %v", err)
}
return value
}
func Connect(uri, username, password, clientId string) (MQTT.Client, error) {
//create a ClientOptions struct setting the broker address, clientid, turn
//off trace output and set the default message handler
opts := MQTT.NewClientOptions().AddBroker(uri)
opts.SetUsername(username)
opts.SetPassword(password)
opts.SetClientID(clientId)
opts.SetAutoReconnect(true)
opts.SetDefaultPublishHandler(
//define a function for the default message handler
func(client MQTT.Client, msg MQTT.Message) {
fmt.Printf("TOPIC: %s\n", msg.Topic())
fmt.Printf("MSG: %s\n", msg.Payload())
})
//create and start a client using the above ClientOptions
client := MQTT.NewClient(opts)
if token := client.Connect(); token.Wait() && token.Error() != nil {
return nil, fmt.Errorf("unable to connect to mqtt bus: %v", token.Error())
}
return client, nil
}

33
vendor/github.com/cyrilix/robocar-base/service/part.go generated vendored Normal file
View File

@ -0,0 +1,33 @@
package service
import (
"fmt"
mqtt "github.com/eclipse/paho.mqtt.golang"
"log"
)
func StopService(name string, client mqtt.Client, topics ...string) {
log.Printf("Stop %s service", name)
token := client.Unsubscribe(topics...)
token.Wait()
if token.Error() != nil {
log.Printf("unable to unsubscribe service: %v", token.Error())
}
client.Disconnect(50)
}
func RegisterCallback(client mqtt.Client, topic string, callback mqtt.MessageHandler) error {
log.Printf("Register callback on topic %v", topic)
token := client.Subscribe(topic, 0, callback)
token.Wait()
if token.Error() != nil {
return fmt.Errorf("unable to register callback on topic %s: %v", topic, token.Error())
}
return nil
}
type Part interface {
Start() error
Stop()
}

60
vendor/github.com/cyrilix/robocar-base/testtools/testtools.go generated vendored Normal file
View File

@ -0,0 +1,60 @@
package testtools
import (
mqtt "github.com/eclipse/paho.mqtt.golang"
"github.com/golang/protobuf/proto"
log "github.com/sirupsen/logrus"
)
type fakeMessage struct {
qos byte
topic string
payload []byte
acked bool
}
func (f *fakeMessage) Duplicate() bool {
return false
}
func (f *fakeMessage) Qos() byte {
return f.qos
}
func (f *fakeMessage) Retained() bool {
return false
}
func (f *fakeMessage) Topic() string {
return f.topic
}
func (f *fakeMessage) MessageID() uint16 {
return 1234
}
func (f *fakeMessage) Payload() []byte {
return f.payload
}
func (f *fakeMessage) Ack() {
f.acked = true
}
func NewFakeMessage(topic string, payload []byte) mqtt.Message {
return &fakeMessage{
qos: 0,
topic: topic,
payload: payload,
acked: false,
}
}
func NewFakeMessageFromProtobuf(topic string, msg proto.Message) mqtt.Message{
payload, err := proto.Marshal(msg)
if err != nil {
log.Errorf("unable to marshal protobuf message %T: %v", msg, err)
return nil
}
return NewFakeMessage(topic, payload)
}

201
vendor/github.com/cyrilix/robocar-protobuf/go/LICENSE generated vendored Normal file
View File

@ -0,0 +1,201 @@
Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
1. Definitions.
"License" shall mean the terms and conditions for use, reproduction,
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whether in tort (including negligence), contract, or otherwise,
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on Your own behalf and on Your sole responsibility, not on behalf
of any other Contributor, and only if You agree to indemnify,
defend, and hold each Contributor harmless for any liability
incurred by, or claims asserted against, such Contributor by reason
of your accepting any such warranty or additional liability.
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you may not use this file except in compliance with the License.
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Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

537
vendor/github.com/cyrilix/robocar-protobuf/go/events/events.pb.go generated vendored Normal file
View File

@ -0,0 +1,537 @@
// Code generated by protoc-gen-go. DO NOT EDIT.
// source: events/events.proto
package events
import (
fmt "fmt"
proto "github.com/golang/protobuf/proto"
math "math"
)
// Reference imports to suppress errors if they are not otherwise used.
var _ = proto.Marshal
var _ = fmt.Errorf
var _ = math.Inf
// This is a compile-time assertion to ensure that this generated file
// is compatible with the proto package it is being compiled against.
// A compilation error at this line likely means your copy of the
// proto package needs to be updated.
const _ = proto.ProtoPackageIsVersion3 // please upgrade the proto package
type DriveMode int32
const (
DriveMode_INVALID DriveMode = 0
DriveMode_USER DriveMode = 1
DriveMode_PILOT DriveMode = 2
)
var DriveMode_name = map[int32]string{
0: "INVALID",
1: "USER",
2: "PILOT",
}
var DriveMode_value = map[string]int32{
"INVALID": 0,
"USER": 1,
"PILOT": 2,
}
func (x DriveMode) String() string {
return proto.EnumName(DriveMode_name, int32(x))
}
func (DriveMode) EnumDescriptor() ([]byte, []int) {
return fileDescriptor_8ec31f2d2a3db598, []int{0}
}
type TypeObject int32
const (
TypeObject_ANY TypeObject = 0
TypeObject_CAR TypeObject = 1
TypeObject_BUMP TypeObject = 2
TypeObject_PLOT TypeObject = 3
)
var TypeObject_name = map[int32]string{
0: "ANY",
1: "CAR",
2: "BUMP",
3: "PLOT",
}
var TypeObject_value = map[string]int32{
"ANY": 0,
"CAR": 1,
"BUMP": 2,
"PLOT": 3,
}
func (x TypeObject) String() string {
return proto.EnumName(TypeObject_name, int32(x))
}
func (TypeObject) EnumDescriptor() ([]byte, []int) {
return fileDescriptor_8ec31f2d2a3db598, []int{1}
}
type FrameRef struct {
Name string `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"`
Id string `protobuf:"bytes,2,opt,name=id,proto3" json:"id,omitempty"`
XXX_NoUnkeyedLiteral struct{} `json:"-"`
XXX_unrecognized []byte `json:"-"`
XXX_sizecache int32 `json:"-"`
}
func (m *FrameRef) Reset() { *m = FrameRef{} }
func (m *FrameRef) String() string { return proto.CompactTextString(m) }
func (*FrameRef) ProtoMessage() {}
func (*FrameRef) Descriptor() ([]byte, []int) {
return fileDescriptor_8ec31f2d2a3db598, []int{0}
}
func (m *FrameRef) XXX_Unmarshal(b []byte) error {
return xxx_messageInfo_FrameRef.Unmarshal(m, b)
}
func (m *FrameRef) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
return xxx_messageInfo_FrameRef.Marshal(b, m, deterministic)
}
func (m *FrameRef) XXX_Merge(src proto.Message) {
xxx_messageInfo_FrameRef.Merge(m, src)
}
func (m *FrameRef) XXX_Size() int {
return xxx_messageInfo_FrameRef.Size(m)
}
func (m *FrameRef) XXX_DiscardUnknown() {
xxx_messageInfo_FrameRef.DiscardUnknown(m)
}
var xxx_messageInfo_FrameRef proto.InternalMessageInfo
func (m *FrameRef) GetName() string {
if m != nil {
return m.Name
}
return ""
}
func (m *FrameRef) GetId() string {
if m != nil {
return m.Id
}
return ""
}
type FrameMessage struct {
Id *FrameRef `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
Frame []byte `protobuf:"bytes,2,opt,name=frame,proto3" json:"frame,omitempty"`
XXX_NoUnkeyedLiteral struct{} `json:"-"`
XXX_unrecognized []byte `json:"-"`
XXX_sizecache int32 `json:"-"`
}
func (m *FrameMessage) Reset() { *m = FrameMessage{} }
func (m *FrameMessage) String() string { return proto.CompactTextString(m) }
func (*FrameMessage) ProtoMessage() {}
func (*FrameMessage) Descriptor() ([]byte, []int) {
return fileDescriptor_8ec31f2d2a3db598, []int{1}
}
func (m *FrameMessage) XXX_Unmarshal(b []byte) error {
return xxx_messageInfo_FrameMessage.Unmarshal(m, b)
}
func (m *FrameMessage) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
return xxx_messageInfo_FrameMessage.Marshal(b, m, deterministic)
}
func (m *FrameMessage) XXX_Merge(src proto.Message) {
xxx_messageInfo_FrameMessage.Merge(m, src)
}
func (m *FrameMessage) XXX_Size() int {
return xxx_messageInfo_FrameMessage.Size(m)
}
func (m *FrameMessage) XXX_DiscardUnknown() {
xxx_messageInfo_FrameMessage.DiscardUnknown(m)
}
var xxx_messageInfo_FrameMessage proto.InternalMessageInfo
func (m *FrameMessage) GetId() *FrameRef {
if m != nil {
return m.Id
}
return nil
}
func (m *FrameMessage) GetFrame() []byte {
if m != nil {
return m.Frame
}
return nil
}
type SteeringMessage struct {
Steering float32 `protobuf:"fixed32,1,opt,name=steering,proto3" json:"steering,omitempty"`
Confidence float32 `protobuf:"fixed32,2,opt,name=confidence,proto3" json:"confidence,omitempty"`
FrameRef *FrameRef `protobuf:"bytes,3,opt,name=frame_ref,json=frameRef,proto3" json:"frame_ref,omitempty"`
XXX_NoUnkeyedLiteral struct{} `json:"-"`
XXX_unrecognized []byte `json:"-"`
XXX_sizecache int32 `json:"-"`
}
func (m *SteeringMessage) Reset() { *m = SteeringMessage{} }
func (m *SteeringMessage) String() string { return proto.CompactTextString(m) }
func (*SteeringMessage) ProtoMessage() {}
func (*SteeringMessage) Descriptor() ([]byte, []int) {
return fileDescriptor_8ec31f2d2a3db598, []int{2}
}
func (m *SteeringMessage) XXX_Unmarshal(b []byte) error {
return xxx_messageInfo_SteeringMessage.Unmarshal(m, b)
}
func (m *SteeringMessage) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
return xxx_messageInfo_SteeringMessage.Marshal(b, m, deterministic)
}
func (m *SteeringMessage) XXX_Merge(src proto.Message) {
xxx_messageInfo_SteeringMessage.Merge(m, src)
}
func (m *SteeringMessage) XXX_Size() int {
return xxx_messageInfo_SteeringMessage.Size(m)
}
func (m *SteeringMessage) XXX_DiscardUnknown() {
xxx_messageInfo_SteeringMessage.DiscardUnknown(m)
}
var xxx_messageInfo_SteeringMessage proto.InternalMessageInfo
func (m *SteeringMessage) GetSteering() float32 {
if m != nil {
return m.Steering
}
return 0
}
func (m *SteeringMessage) GetConfidence() float32 {
if m != nil {
return m.Confidence
}
return 0
}
func (m *SteeringMessage) GetFrameRef() *FrameRef {
if m != nil {
return m.FrameRef
}
return nil
}
type ThrottleMessage struct {
Throttle float32 `protobuf:"fixed32,1,opt,name=throttle,proto3" json:"throttle,omitempty"`
Confidence float32 `protobuf:"fixed32,2,opt,name=confidence,proto3" json:"confidence,omitempty"`
FrameRef *FrameRef `protobuf:"bytes,3,opt,name=frame_ref,json=frameRef,proto3" json:"frame_ref,omitempty"`
XXX_NoUnkeyedLiteral struct{} `json:"-"`
XXX_unrecognized []byte `json:"-"`
XXX_sizecache int32 `json:"-"`
}
func (m *ThrottleMessage) Reset() { *m = ThrottleMessage{} }
func (m *ThrottleMessage) String() string { return proto.CompactTextString(m) }
func (*ThrottleMessage) ProtoMessage() {}
func (*ThrottleMessage) Descriptor() ([]byte, []int) {
return fileDescriptor_8ec31f2d2a3db598, []int{3}
}
func (m *ThrottleMessage) XXX_Unmarshal(b []byte) error {
return xxx_messageInfo_ThrottleMessage.Unmarshal(m, b)
}
func (m *ThrottleMessage) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
return xxx_messageInfo_ThrottleMessage.Marshal(b, m, deterministic)
}
func (m *ThrottleMessage) XXX_Merge(src proto.Message) {
xxx_messageInfo_ThrottleMessage.Merge(m, src)
}
func (m *ThrottleMessage) XXX_Size() int {
return xxx_messageInfo_ThrottleMessage.Size(m)
}
func (m *ThrottleMessage) XXX_DiscardUnknown() {
xxx_messageInfo_ThrottleMessage.DiscardUnknown(m)
}
var xxx_messageInfo_ThrottleMessage proto.InternalMessageInfo
func (m *ThrottleMessage) GetThrottle() float32 {
if m != nil {
return m.Throttle
}
return 0
}
func (m *ThrottleMessage) GetConfidence() float32 {
if m != nil {
return m.Confidence
}
return 0
}
func (m *ThrottleMessage) GetFrameRef() *FrameRef {
if m != nil {
return m.FrameRef
}
return nil
}
type DriveModeMessage struct {
DriveMode DriveMode `protobuf:"varint,1,opt,name=drive_mode,json=driveMode,proto3,enum=robocar.events.DriveMode" json:"drive_mode,omitempty"`
XXX_NoUnkeyedLiteral struct{} `json:"-"`
XXX_unrecognized []byte `json:"-"`
XXX_sizecache int32 `json:"-"`
}
func (m *DriveModeMessage) Reset() { *m = DriveModeMessage{} }
func (m *DriveModeMessage) String() string { return proto.CompactTextString(m) }
func (*DriveModeMessage) ProtoMessage() {}
func (*DriveModeMessage) Descriptor() ([]byte, []int) {
return fileDescriptor_8ec31f2d2a3db598, []int{4}
}
func (m *DriveModeMessage) XXX_Unmarshal(b []byte) error {
return xxx_messageInfo_DriveModeMessage.Unmarshal(m, b)
}
func (m *DriveModeMessage) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
return xxx_messageInfo_DriveModeMessage.Marshal(b, m, deterministic)
}
func (m *DriveModeMessage) XXX_Merge(src proto.Message) {
xxx_messageInfo_DriveModeMessage.Merge(m, src)
}
func (m *DriveModeMessage) XXX_Size() int {
return xxx_messageInfo_DriveModeMessage.Size(m)
}
func (m *DriveModeMessage) XXX_DiscardUnknown() {
xxx_messageInfo_DriveModeMessage.DiscardUnknown(m)
}
var xxx_messageInfo_DriveModeMessage proto.InternalMessageInfo
func (m *DriveModeMessage) GetDriveMode() DriveMode {
if m != nil {
return m.DriveMode
}
return DriveMode_INVALID
}
type ObjectsMessage struct {
Objects []*Object `protobuf:"bytes,1,rep,name=objects,proto3" json:"objects,omitempty"`
FrameRef *FrameRef `protobuf:"bytes,2,opt,name=frame_ref,json=frameRef,proto3" json:"frame_ref,omitempty"`
XXX_NoUnkeyedLiteral struct{} `json:"-"`
XXX_unrecognized []byte `json:"-"`
XXX_sizecache int32 `json:"-"`
}
func (m *ObjectsMessage) Reset() { *m = ObjectsMessage{} }
func (m *ObjectsMessage) String() string { return proto.CompactTextString(m) }
func (*ObjectsMessage) ProtoMessage() {}
func (*ObjectsMessage) Descriptor() ([]byte, []int) {
return fileDescriptor_8ec31f2d2a3db598, []int{5}
}
func (m *ObjectsMessage) XXX_Unmarshal(b []byte) error {
return xxx_messageInfo_ObjectsMessage.Unmarshal(m, b)
}
func (m *ObjectsMessage) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
return xxx_messageInfo_ObjectsMessage.Marshal(b, m, deterministic)
}
func (m *ObjectsMessage) XXX_Merge(src proto.Message) {
xxx_messageInfo_ObjectsMessage.Merge(m, src)
}
func (m *ObjectsMessage) XXX_Size() int {
return xxx_messageInfo_ObjectsMessage.Size(m)
}
func (m *ObjectsMessage) XXX_DiscardUnknown() {
xxx_messageInfo_ObjectsMessage.DiscardUnknown(m)
}
var xxx_messageInfo_ObjectsMessage proto.InternalMessageInfo
func (m *ObjectsMessage) GetObjects() []*Object {
if m != nil {
return m.Objects
}
return nil
}
func (m *ObjectsMessage) GetFrameRef() *FrameRef {
if m != nil {
return m.FrameRef
}
return nil
}
type Object struct {
Type TypeObject `protobuf:"varint,1,opt,name=type,proto3,enum=robocar.events.TypeObject" json:"type,omitempty"`
LLeft int32 `protobuf:"varint,2,opt,name=lLeft,proto3" json:"lLeft,omitempty"`
Up int32 `protobuf:"varint,3,opt,name=up,proto3" json:"up,omitempty"`
Right int32 `protobuf:"varint,4,opt,name=right,proto3" json:"right,omitempty"`
Bottom int32 `protobuf:"varint,5,opt,name=bottom,proto3" json:"bottom,omitempty"`
Confidence float32 `protobuf:"fixed32,6,opt,name=confidence,proto3" json:"confidence,omitempty"`
XXX_NoUnkeyedLiteral struct{} `json:"-"`
XXX_unrecognized []byte `json:"-"`
XXX_sizecache int32 `json:"-"`
}
func (m *Object) Reset() { *m = Object{} }
func (m *Object) String() string { return proto.CompactTextString(m) }
func (*Object) ProtoMessage() {}
func (*Object) Descriptor() ([]byte, []int) {
return fileDescriptor_8ec31f2d2a3db598, []int{6}
}
func (m *Object) XXX_Unmarshal(b []byte) error {
return xxx_messageInfo_Object.Unmarshal(m, b)
}
func (m *Object) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
return xxx_messageInfo_Object.Marshal(b, m, deterministic)
}
func (m *Object) XXX_Merge(src proto.Message) {
xxx_messageInfo_Object.Merge(m, src)
}
func (m *Object) XXX_Size() int {
return xxx_messageInfo_Object.Size(m)
}
func (m *Object) XXX_DiscardUnknown() {
xxx_messageInfo_Object.DiscardUnknown(m)
}
var xxx_messageInfo_Object proto.InternalMessageInfo
func (m *Object) GetType() TypeObject {
if m != nil {
return m.Type
}
return TypeObject_ANY
}
func (m *Object) GetLLeft() int32 {
if m != nil {
return m.LLeft
}
return 0
}
func (m *Object) GetUp() int32 {
if m != nil {
return m.Up
}
return 0
}
func (m *Object) GetRight() int32 {
if m != nil {
return m.Right
}
return 0
}
func (m *Object) GetBottom() int32 {
if m != nil {
return m.Bottom
}
return 0
}
func (m *Object) GetConfidence() float32 {
if m != nil {
return m.Confidence
}
return 0
}
type SwitchRecordMessage struct {
Enabled bool `protobuf:"varint,1,opt,name=enabled,proto3" json:"enabled,omitempty"`
XXX_NoUnkeyedLiteral struct{} `json:"-"`
XXX_unrecognized []byte `json:"-"`
XXX_sizecache int32 `json:"-"`
}
func (m *SwitchRecordMessage) Reset() { *m = SwitchRecordMessage{} }
func (m *SwitchRecordMessage) String() string { return proto.CompactTextString(m) }
func (*SwitchRecordMessage) ProtoMessage() {}
func (*SwitchRecordMessage) Descriptor() ([]byte, []int) {
return fileDescriptor_8ec31f2d2a3db598, []int{7}
}
func (m *SwitchRecordMessage) XXX_Unmarshal(b []byte) error {
return xxx_messageInfo_SwitchRecordMessage.Unmarshal(m, b)
}
func (m *SwitchRecordMessage) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
return xxx_messageInfo_SwitchRecordMessage.Marshal(b, m, deterministic)
}
func (m *SwitchRecordMessage) XXX_Merge(src proto.Message) {
xxx_messageInfo_SwitchRecordMessage.Merge(m, src)
}
func (m *SwitchRecordMessage) XXX_Size() int {
return xxx_messageInfo_SwitchRecordMessage.Size(m)
}
func (m *SwitchRecordMessage) XXX_DiscardUnknown() {
xxx_messageInfo_SwitchRecordMessage.DiscardUnknown(m)
}
var xxx_messageInfo_SwitchRecordMessage proto.InternalMessageInfo
func (m *SwitchRecordMessage) GetEnabled() bool {
if m != nil {
return m.Enabled
}
return false
}
func init() {
proto.RegisterEnum("robocar.events.DriveMode", DriveMode_name, DriveMode_value)
proto.RegisterEnum("robocar.events.TypeObject", TypeObject_name, TypeObject_value)
proto.RegisterType((*FrameRef)(nil), "robocar.events.FrameRef")
proto.RegisterType((*FrameMessage)(nil), "robocar.events.FrameMessage")
proto.RegisterType((*SteeringMessage)(nil), "robocar.events.SteeringMessage")
proto.RegisterType((*ThrottleMessage)(nil), "robocar.events.ThrottleMessage")
proto.RegisterType((*DriveModeMessage)(nil), "robocar.events.DriveModeMessage")
proto.RegisterType((*ObjectsMessage)(nil), "robocar.events.ObjectsMessage")
proto.RegisterType((*Object)(nil), "robocar.events.Object")
proto.RegisterType((*SwitchRecordMessage)(nil), "robocar.events.SwitchRecordMessage")
}
func init() { proto.RegisterFile("events/events.proto", fileDescriptor_8ec31f2d2a3db598) }
var fileDescriptor_8ec31f2d2a3db598 = []byte{
// 473 bytes of a gzipped FileDescriptorProto
0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xb4, 0x53, 0x4d, 0x6b, 0xdb, 0x40,
0x10, 0x8d, 0x64, 0x5b, 0x96, 0x26, 0xc1, 0x15, 0x9b, 0x12, 0xd4, 0x1c, 0x4a, 0xd0, 0xc9, 0x04,
0xaa, 0x14, 0x97, 0x42, 0xaf, 0x4e, 0xd3, 0x82, 0xc1, 0x76, 0xcc, 0xda, 0x29, 0xb4, 0x97, 0xa0,
0x8f, 0x91, 0xad, 0x62, 0x6b, 0xc5, 0x6a, 0x93, 0xe2, 0x7b, 0x7f, 0x4e, 0x7f, 0x64, 0xd9, 0x5d,
0xad, 0x9b, 0xe8, 0xd2, 0x5e, 0x7a, 0xf2, 0xbc, 0xe7, 0x79, 0x6f, 0xdf, 0xce, 0x8e, 0xe0, 0x14,
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0x09, 0xd5, 0x20, 0xfc, 0x69, 0xc1, 0x8b, 0xa5, 0x40, 0xe4, 0x45, 0xb9, 0x36, 0x9e, 0xe7, 0xe0,
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0xb5, 0x95, 0x4d, 0x9f, 0x30, 0xe4, 0x3d, 0x78, 0xca, 0xf8, 0x9e, 0x63, 0x1e, 0x74, 0xfe, 0x12,
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0x31, 0x0c, 0xfe, 0x5f, 0x31, 0xa6, 0xe0, 0xdf, 0xf0, 0xe2, 0x11, 0x67, 0x2c, 0x3b, 0xc4, 0xf8,
0x00, 0x90, 0x49, 0xee, 0x7e, 0xc7, 0x32, 0x1d, 0x64, 0x30, 0x7a, 0xd5, 0xf6, 0x3a, 0xa8, 0xa8,
0x97, 0x99, 0x32, 0xdc, 0xc3, 0xe0, 0x36, 0xf9, 0x8e, 0xa9, 0xa8, 0x8d, 0xd7, 0x5b, 0xe8, 0x33,
0xcd, 0x04, 0xd6, 0x45, 0x67, 0x78, 0x3c, 0x3a, 0x6b, 0x1b, 0x69, 0x01, 0x35, 0x6d, 0xcf, 0x2f,
0x62, 0xff, 0xf3, 0x45, 0x7e, 0x59, 0xe0, 0x68, 0x2b, 0x12, 0x41, 0x57, 0xec, 0x2b, 0x93, 0xfc,
0xbc, 0x2d, 0x5e, 0xed, 0x2b, 0x6c, 0x0e, 0x55, 0x7d, 0x72, 0x4f, 0xb6, 0x53, 0xcc, 0x85, 0x3a,
0xad, 0x47, 0x35, 0x90, 0x7b, 0xf8, 0x50, 0xa9, 0x49, 0xf6, 0xa8, 0xfd, 0x50, 0xc9, 0x2e, 0x5e,
0xac, 0x37, 0x22, 0xe8, 0xea, 0x2e, 0x05, 0xc8, 0x19, 0x38, 0x09, 0x13, 0x82, 0xed, 0x82, 0x9e,
0xa2, 0x1b, 0xd4, 0x7a, 0x2e, 0xa7, 0xfd, 0x5c, 0xe1, 0x15, 0x9c, 0x2e, 0x7f, 0x14, 0x22, 0xdd,
0x50, 0x4c, 0x19, 0xcf, 0xcc, 0xb8, 0x02, 0xe8, 0x63, 0x19, 0x27, 0x5b, 0xd4, 0x1b, 0xee, 0x52,
0x03, 0x2f, 0xdf, 0x80, 0x77, 0x18, 0x39, 0x39, 0x86, 0xfe, 0x64, 0xfe, 0x65, 0x3c, 0x9d, 0xdc,
0xf8, 0x47, 0xc4, 0x85, 0xee, 0xdd, 0xf2, 0x13, 0xf5, 0x2d, 0xe2, 0x41, 0x6f, 0x31, 0x99, 0xde,
0xae, 0x7c, 0xfb, 0x72, 0x04, 0xf0, 0xe7, 0x9e, 0xa4, 0x0f, 0x9d, 0xf1, 0xfc, 0xab, 0x7f, 0x24,
0x8b, 0x8f, 0x63, 0xd9, 0xea, 0x42, 0xf7, 0xfa, 0x6e, 0xb6, 0xf0, 0x6d, 0x59, 0x2d, 0xa4, 0xa6,
0x73, 0xed, 0x7e, 0x73, 0xf4, 0x88, 0x12, 0x47, 0x7d, 0xba, 0xef, 0x7e, 0x07, 0x00, 0x00, 0xff,
0xff, 0x77, 0x9d, 0xdb, 0x75, 0xd1, 0x03, 0x00, 0x00,
}

36
vendor/github.com/eclipse/paho.mqtt.golang/.gitignore generated vendored Normal file
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@ -0,0 +1,36 @@
# Compiled Object files, Static and Dynamic libs (Shared Objects)
*.o
*.a
*.so
# Folders
_obj
_test
# Architecture specific extensions/prefixes
*.[568vq]
[568vq].out
*.cgo1.go
*.cgo2.c
_cgo_defun.c
_cgo_gotypes.go
_cgo_export.*
_testmain.go
*.exe
*.msg
*.lok
samples/trivial
samples/trivial2
samples/sample
samples/reconnect
samples/ssl
samples/custom_store
samples/simple
samples/stdinpub
samples/stdoutsub
samples/routing

56
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Contributing to Paho
====================
Thanks for your interest in this project.
Project description:
--------------------
The Paho project has been created to provide scalable open-source implementations of open and standard messaging protocols aimed at new, existing, and emerging applications for Machine-to-Machine (M2M) and Internet of Things (IoT).
Paho reflects the inherent physical and cost constraints of device connectivity. Its objectives include effective levels of decoupling between devices and applications, designed to keep markets open and encourage the rapid growth of scalable Web and Enterprise middleware and applications. Paho is being kicked off with MQTT publish/subscribe client implementations for use on embedded platforms, along with corresponding server support as determined by the community.
- https://projects.eclipse.org/projects/technology.paho
Developer resources:
--------------------
Information regarding source code management, builds, coding standards, and more.
- https://projects.eclipse.org/projects/technology.paho/developer
Contributor License Agreement:
------------------------------
Before your contribution can be accepted by the project, you need to create and electronically sign the Eclipse Foundation Contributor License Agreement (CLA).
- http://www.eclipse.org/legal/CLA.php
Contributing Code:
------------------
The Go client is developed in Github, see their documentation on the process of forking and pull requests; https://help.github.com/categories/collaborating-on-projects-using-pull-requests/
Git commit messages should follow the style described here;
http://tbaggery.com/2008/04/19/a-note-about-git-commit-messages.html
Contact:
--------
Contact the project developers via the project's "dev" list.
- https://dev.eclipse.org/mailman/listinfo/paho-dev
Search for bugs:
----------------
This project uses Github issues to track ongoing development and issues.
- https://github.com/eclipse/paho.mqtt.golang/issues
Create a new bug:
-----------------
Be sure to search for existing bugs before you create another one. Remember that contributions are always welcome!
- https://github.com/eclipse/paho.mqtt.golang/issues

15
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Eclipse Distribution License - v 1.0
Copyright (c) 2007, Eclipse Foundation, Inc. and its licensors.
All rights reserved.
Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
Neither the name of the Eclipse Foundation, Inc. nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

87
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Eclipse Public License - v 1.0
THE ACCOMPANYING PROGRAM IS PROVIDED UNDER THE TERMS OF THIS ECLIPSE PUBLIC LICENSE ("AGREEMENT"). ANY USE, REPRODUCTION OR DISTRIBUTION OF THE PROGRAM CONSTITUTES RECIPIENT'S ACCEPTANCE OF THIS AGREEMENT.
1. DEFINITIONS
"Contribution" means:
a) in the case of the initial Contributor, the initial code and documentation distributed under this Agreement, and
b) in the case of each subsequent Contributor:
i) changes to the Program, and
ii) additions to the Program;
where such changes and/or additions to the Program originate from and are distributed by that particular Contributor. A Contribution 'originates' from a Contributor if it was added to the Program by such Contributor itself or anyone acting on such Contributor's behalf. Contributions do not include additions to the Program which: (i) are separate modules of software distributed in conjunction with the Program under their own license agreement, and (ii) are not derivative works of the Program.
"Contributor" means any person or entity that distributes the Program.
"Licensed Patents" mean patent claims licensable by a Contributor which are necessarily infringed by the use or sale of its Contribution alone or when combined with the Program.
"Program" means the Contributions distributed in accordance with this Agreement.
"Recipient" means anyone who receives the Program under this Agreement, including all Contributors.
2. GRANT OF RIGHTS
a) Subject to the terms of this Agreement, each Contributor hereby grants Recipient a non-exclusive, worldwide, royalty-free copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, distribute and sublicense the Contribution of such Contributor, if any, and such derivative works, in source code and object code form.
b) Subject to the terms of this Agreement, each Contributor hereby grants Recipient a non-exclusive, worldwide, royalty-free patent license under Licensed Patents to make, use, sell, offer to sell, import and otherwise transfer the Contribution of such Contributor, if any, in source code and object code form. This patent license shall apply to the combination of the Contribution and the Program if, at the time the Contribution is added by the Contributor, such addition of the Contribution causes such combination to be covered by the Licensed Patents. The patent license shall not apply to any other combinations which include the Contribution. No hardware per se is licensed hereunder.
c) Recipient understands that although each Contributor grants the licenses to its Contributions set forth herein, no assurances are provided by any Contributor that the Program does not infringe the patent or other intellectual property rights of any other entity. Each Contributor disclaims any liability to Recipient for claims brought by any other entity based on infringement of intellectual property rights or otherwise. As a condition to exercising the rights and licenses granted hereunder, each Recipient hereby assumes sole responsibility to secure any other intellectual property rights needed, if any. For example, if a third party patent license is required to allow Recipient to distribute the Program, it is Recipient's responsibility to acquire that license before distributing the Program.
d) Each Contributor represents that to its knowledge it has sufficient copyright rights in its Contribution, if any, to grant the copyright license set forth in this Agreement.
3. REQUIREMENTS
A Contributor may choose to distribute the Program in object code form under its own license agreement, provided that:
a) it complies with the terms and conditions of this Agreement; and
b) its license agreement:
i) effectively disclaims on behalf of all Contributors all warranties and conditions, express and implied, including warranties or conditions of title and non-infringement, and implied warranties or conditions of merchantability and fitness for a particular purpose;
ii) effectively excludes on behalf of all Contributors all liability for damages, including direct, indirect, special, incidental and consequential damages, such as lost profits;
iii) states that any provisions which differ from this Agreement are offered by that Contributor alone and not by any other party; and
iv) states that source code for the Program is available from such Contributor, and informs licensees how to obtain it in a reasonable manner on or through a medium customarily used for software exchange.
When the Program is made available in source code form:
a) it must be made available under this Agreement; and
b) a copy of this Agreement must be included with each copy of the Program.
Contributors may not remove or alter any copyright notices contained within the Program.
Each Contributor must identify itself as the originator of its Contribution, if any, in a manner that reasonably allows subsequent Recipients to identify the originator of the Contribution.
4. COMMERCIAL DISTRIBUTION
Commercial distributors of software may accept certain responsibilities with respect to end users, business partners and the like. While this license is intended to facilitate the commercial use of the Program, the Contributor who includes the Program in a commercial product offering should do so in a manner which does not create potential liability for other Contributors. Therefore, if a Contributor includes the Program in a commercial product offering, such Contributor ("Commercial Contributor") hereby agrees to defend and indemnify every other Contributor ("Indemnified Contributor") against any losses, damages and costs (collectively "Losses") arising from claims, lawsuits and other legal actions brought by a third party against the Indemnified Contributor to the extent caused by the acts or omissions of such Commercial Contributor in connection with its distribution of the Program in a commercial product offering. The obligations in this section do not apply to any claims or Losses relating to any actual or alleged intellectual property infringement. In order to qualify, an Indemnified Contributor must: a) promptly notify the Commercial Contributor in writing of such claim, and b) allow the Commercial Contributor to control, and cooperate with the Commercial Contributor in, the defense and any related settlement negotiations. The Indemnified Contributor may participate in any such claim at its own expense.
For example, a Contributor might include the Program in a commercial product offering, Product X. That Contributor is then a Commercial Contributor. If that Commercial Contributor then makes performance claims, or offers warranties related to Product X, those performance claims and warranties are such Commercial Contributor's responsibility alone. Under this section, the Commercial Contributor would have to defend claims against the other Contributors related to those performance claims and warranties, and if a court requires any other Contributor to pay any damages as a result, the Commercial Contributor must pay those damages.
5. NO WARRANTY
EXCEPT AS EXPRESSLY SET FORTH IN THIS AGREEMENT, THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT, MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is solely responsible for determining the appropriateness of using and distributing the Program and assumes all risks associated with its exercise of rights under this Agreement , including but not limited to the risks and costs of program errors, compliance with applicable laws, damage to or loss of data, programs or equipment, and unavailability or interruption of operations.
6. DISCLAIMER OF LIABILITY
EXCEPT AS EXPRESSLY SET FORTH IN THIS AGREEMENT, NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
7. GENERAL
If any provision of this Agreement is invalid or unenforceable under applicable law, it shall not affect the validity or enforceability of the remainder of the terms of this Agreement, and without further action by the parties hereto, such provision shall be reformed to the minimum extent necessary to make such provision valid and enforceable.
If Recipient institutes patent litigation against any entity (including a cross-claim or counterclaim in a lawsuit) alleging that the Program itself (excluding combinations of the Program with other software or hardware) infringes such Recipient's patent(s), then such Recipient's rights granted under Section 2(b) shall terminate as of the date such litigation is filed.
All Recipient's rights under this Agreement shall terminate if it fails to comply with any of the material terms or conditions of this Agreement and does not cure such failure in a reasonable period of time after becoming aware of such noncompliance. If all Recipient's rights under this Agreement terminate, Recipient agrees to cease use and distribution of the Program as soon as reasonably practicable. However, Recipient's obligations under this Agreement and any licenses granted by Recipient relating to the Program shall continue and survive.
Everyone is permitted to copy and distribute copies of this Agreement, but in order to avoid inconsistency the Agreement is copyrighted and may only be modified in the following manner. The Agreement Steward reserves the right to publish new versions (including revisions) of this Agreement from time to time. No one other than the Agreement Steward has the right to modify this Agreement. The Eclipse Foundation is the initial Agreement Steward. The Eclipse Foundation may assign the responsibility to serve as the Agreement Steward to a suitable separate entity. Each new version of the Agreement will be given a distinguishing version number. The Program (including Contributions) may always be distributed subject to the version of the Agreement under which it was received. In addition, after a new version of the Agreement is published, Contributor may elect to distribute the Program (including its Contributions) under the new version. Except as expressly stated in Sections 2(a) and 2(b) above, Recipient receives no rights or licenses to the intellectual property of any Contributor under this Agreement, whether expressly, by implication, estoppel or otherwise. All rights in the Program not expressly granted under this Agreement are reserved.
This Agreement is governed by the laws of the State of New York and the intellectual property laws of the United States of America. No party to this Agreement will bring a legal action under this Agreement more than one year after the cause of action arose. Each party waives its rights to a jury trial in any resulting litigation.

67
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[![GoDoc](https://godoc.org/github.com/eclipse/paho.mqtt.golang?status.svg)](https://godoc.org/github.com/eclipse/paho.mqtt.golang)
[![Go Report Card](https://goreportcard.com/badge/github.com/eclipse/paho.mqtt.golang)](https://goreportcard.com/report/github.com/eclipse/paho.mqtt.golang)
Eclipse Paho MQTT Go client
===========================
This repository contains the source code for the [Eclipse Paho](http://eclipse.org/paho) MQTT Go client library.
This code builds a library which enable applications to connect to an [MQTT](http://mqtt.org) broker to publish messages, and to subscribe to topics and receive published messages.
This library supports a fully asynchronous mode of operation.
Installation and Build
----------------------
This client is designed to work with the standard Go tools, so installation is as easy as:
```
go get github.com/eclipse/paho.mqtt.golang
```
The client depends on Google's [websockets](https://godoc.org/golang.org/x/net/websocket) and [proxy](https://godoc.org/golang.org/x/net/proxy) package,
also easily installed with the commands:
```
go get golang.org/x/net/websocket
go get golang.org/x/net/proxy
```
Usage and API
-------------
Detailed API documentation is available by using to godoc tool, or can be browsed online
using the [godoc.org](http://godoc.org/github.com/eclipse/paho.mqtt.golang) service.
Make use of the library by importing it in your Go client source code. For example,
```
import "github.com/eclipse/paho.mqtt.golang"
```
Samples are available in the `cmd` directory for reference.
Runtime tracing
---------------
Tracing is enabled by assigning logs (from the Go log package) to the logging endpoints, ERROR, CRITICAL, WARN and DEBUG
Reporting bugs
--------------
Please report bugs by raising issues for this project in github https://github.com/eclipse/paho.mqtt.golang/issues
More information
----------------
Discussion of the Paho clients takes place on the [Eclipse paho-dev mailing list](https://dev.eclipse.org/mailman/listinfo/paho-dev).
General questions about the MQTT protocol are discussed in the [MQTT Google Group](https://groups.google.com/forum/?hl=en-US&fromgroups#!forum/mqtt).
There is much more information available via the [MQTT community site](http://mqtt.org).

41
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"><head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>About</title>
</head>
<body lang="EN-US">
<h2>About This Content</h2>
<p><em>December 9, 2013</em></p>
<h3>License</h3>
<p>The Eclipse Foundation makes available all content in this plug-in ("Content"). Unless otherwise
indicated below, the Content is provided to you under the terms and conditions of the
Eclipse Public License Version 1.0 ("EPL") and Eclipse Distribution License Version 1.0 ("EDL").
A copy of the EPL is available at
<a href="http://www.eclipse.org/legal/epl-v10.html">http://www.eclipse.org/legal/epl-v10.html</a>
and a copy of the EDL is available at
<a href="http://www.eclipse.org/org/documents/edl-v10.php">http://www.eclipse.org/org/documents/edl-v10.php</a>.
For purposes of the EPL, "Program" will mean the Content.</p>
<p>If you did not receive this Content directly from the Eclipse Foundation, the Content is
being redistributed by another party ("Redistributor") and different terms and conditions may
apply to your use of any object code in the Content. Check the Redistributor's license that was
provided with the Content. If no such license exists, contact the Redistributor. Unless otherwise
indicated below, the terms and conditions of the EPL still apply to any source code in the Content
and such source code may be obtained at <a href="http://www.eclipse.org/">http://www.eclipse.org</a>.</p>
<h3>Third Party Content</h3>
<p>The Content includes items that have been sourced from third parties as set out below. If you
did not receive this Content directly from the Eclipse Foundation, the following is provided
for informational purposes only, and you should look to the Redistributor's license for
terms and conditions of use.</p>
<p><em>
<strong>None</strong> <br><br>
<br><br>
</em></p>
</body></html>

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/*
* Copyright (c) 2013 IBM Corp.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Seth Hoenig
* Allan Stockdill-Mander
* Mike Robertson
*/
// Portions copyright © 2018 TIBCO Software Inc.
// Package mqtt provides an MQTT v3.1.1 client library.
package mqtt
import (
"errors"
"fmt"
"net"
"strings"
"sync"
"sync/atomic"
"time"
"github.com/eclipse/paho.mqtt.golang/packets"
)
const (
disconnected uint32 = iota
connecting
reconnecting
connected
)
// Client is the interface definition for a Client as used by this
// library, the interface is primarily to allow mocking tests.
//
// It is an MQTT v3.1.1 client for communicating
// with an MQTT server using non-blocking methods that allow work
// to be done in the background.
// An application may connect to an MQTT server using:
// A plain TCP socket
// A secure SSL/TLS socket
// A websocket
// To enable ensured message delivery at Quality of Service (QoS) levels
// described in the MQTT spec, a message persistence mechanism must be
// used. This is done by providing a type which implements the Store
// interface. For convenience, FileStore and MemoryStore are provided
// implementations that should be sufficient for most use cases. More
// information can be found in their respective documentation.
// Numerous connection options may be specified by configuring a
// and then supplying a ClientOptions type.
type Client interface {
// IsConnected returns a bool signifying whether
// the client is connected or not.
IsConnected() bool
// IsConnectionOpen return a bool signifying wether the client has an active
// connection to mqtt broker, i.e not in disconnected or reconnect mode
IsConnectionOpen() bool
// Connect will create a connection to the message broker, by default
// it will attempt to connect at v3.1.1 and auto retry at v3.1 if that
// fails
Connect() Token
// Disconnect will end the connection with the server, but not before waiting
// the specified number of milliseconds to wait for existing work to be
// completed.
Disconnect(quiesce uint)
// Publish will publish a message with the specified QoS and content
// to the specified topic.
// Returns a token to track delivery of the message to the broker
Publish(topic string, qos byte, retained bool, payload interface{}) Token
// Subscribe starts a new subscription. Provide a MessageHandler to be executed when
// a message is published on the topic provided, or nil for the default handler
Subscribe(topic string, qos byte, callback MessageHandler) Token
// SubscribeMultiple starts a new subscription for multiple topics. Provide a MessageHandler to
// be executed when a message is published on one of the topics provided, or nil for the
// default handler
SubscribeMultiple(filters map[string]byte, callback MessageHandler) Token
// Unsubscribe will end the subscription from each of the topics provided.
// Messages published to those topics from other clients will no longer be
// received.
Unsubscribe(topics ...string) Token
// AddRoute allows you to add a handler for messages on a specific topic
// without making a subscription. For example having a different handler
// for parts of a wildcard subscription
AddRoute(topic string, callback MessageHandler)
// OptionsReader returns a ClientOptionsReader which is a copy of the clientoptions
// in use by the client.
OptionsReader() ClientOptionsReader
}
// client implements the Client interface
type client struct {
lastSent atomic.Value
lastReceived atomic.Value
pingOutstanding int32
status uint32
sync.RWMutex
messageIds
conn net.Conn
ibound chan packets.ControlPacket
obound chan *PacketAndToken
oboundP chan *PacketAndToken
msgRouter *router
stopRouter chan bool
incomingPubChan chan *packets.PublishPacket
errors chan error
stop chan struct{}
persist Store
options ClientOptions
workers sync.WaitGroup
}
// NewClient will create an MQTT v3.1.1 client with all of the options specified
// in the provided ClientOptions. The client must have the Connect method called
// on it before it may be used. This is to make sure resources (such as a net
// connection) are created before the application is actually ready.
func NewClient(o *ClientOptions) Client {
c := &client{}
c.options = *o
if c.options.Store == nil {
c.options.Store = NewMemoryStore()
}
switch c.options.ProtocolVersion {
case 3, 4:
c.options.protocolVersionExplicit = true
case 0x83, 0x84:
c.options.protocolVersionExplicit = true
default:
c.options.ProtocolVersion = 4
c.options.protocolVersionExplicit = false
}
c.persist = c.options.Store
c.status = disconnected
c.messageIds = messageIds{index: make(map[uint16]tokenCompletor)}
c.msgRouter, c.stopRouter = newRouter()
c.msgRouter.setDefaultHandler(c.options.DefaultPublishHandler)
if !c.options.AutoReconnect {
c.options.MessageChannelDepth = 0
}
return c
}
// AddRoute allows you to add a handler for messages on a specific topic
// without making a subscription. For example having a different handler
// for parts of a wildcard subscription
func (c *client) AddRoute(topic string, callback MessageHandler) {
if callback != nil {
c.msgRouter.addRoute(topic, callback)
}
}
// IsConnected returns a bool signifying whether
// the client is connected or not.
func (c *client) IsConnected() bool {
c.RLock()
defer c.RUnlock()
status := atomic.LoadUint32(&c.status)
switch {
case status == connected:
return true
case c.options.AutoReconnect && status > connecting:
return true
default:
return false
}
}
// IsConnectionOpen return a bool signifying whether the client has an active
// connection to mqtt broker, i.e not in disconnected or reconnect mode
func (c *client) IsConnectionOpen() bool {
c.RLock()
defer c.RUnlock()
status := atomic.LoadUint32(&c.status)
switch {
case status == connected:
return true
default:
return false
}
}
func (c *client) connectionStatus() uint32 {
c.RLock()
defer c.RUnlock()
status := atomic.LoadUint32(&c.status)
return status
}
func (c *client) setConnected(status uint32) {
c.Lock()
defer c.Unlock()
atomic.StoreUint32(&c.status, uint32(status))
}
//ErrNotConnected is the error returned from function calls that are
//made when the client is not connected to a broker
var ErrNotConnected = errors.New("Not Connected")
// Connect will create a connection to the message broker, by default
// it will attempt to connect at v3.1.1 and auto retry at v3.1 if that
// fails
func (c *client) Connect() Token {
var err error
t := newToken(packets.Connect).(*ConnectToken)
DEBUG.Println(CLI, "Connect()")
c.obound = make(chan *PacketAndToken, c.options.MessageChannelDepth)
c.oboundP = make(chan *PacketAndToken, c.options.MessageChannelDepth)
c.ibound = make(chan packets.ControlPacket)
go func() {
c.persist.Open()
c.setConnected(connecting)
c.errors = make(chan error, 1)
c.stop = make(chan struct{})
var rc byte
protocolVersion := c.options.ProtocolVersion
if len(c.options.Servers) == 0 {
t.setError(fmt.Errorf("No servers defined to connect to"))
return
}
for _, broker := range c.options.Servers {
cm := newConnectMsgFromOptions(&c.options, broker)
c.options.ProtocolVersion = protocolVersion
CONN:
DEBUG.Println(CLI, "about to write new connect msg")
c.conn, err = openConnection(broker, c.options.TLSConfig, c.options.ConnectTimeout, c.options.HTTPHeaders)
if err == nil {
DEBUG.Println(CLI, "socket connected to broker")
switch c.options.ProtocolVersion {
case 3:
DEBUG.Println(CLI, "Using MQTT 3.1 protocol")
cm.ProtocolName = "MQIsdp"
cm.ProtocolVersion = 3
case 0x83:
DEBUG.Println(CLI, "Using MQTT 3.1b protocol")
cm.ProtocolName = "MQIsdp"
cm.ProtocolVersion = 0x83
case 0x84:
DEBUG.Println(CLI, "Using MQTT 3.1.1b protocol")
cm.ProtocolName = "MQTT"
cm.ProtocolVersion = 0x84
default:
DEBUG.Println(CLI, "Using MQTT 3.1.1 protocol")
c.options.ProtocolVersion = 4
cm.ProtocolName = "MQTT"
cm.ProtocolVersion = 4
}
cm.Write(c.conn)
rc, t.sessionPresent = c.connect()
if rc != packets.Accepted {
if c.conn != nil {
c.conn.Close()
c.conn = nil
}
//if the protocol version was explicitly set don't do any fallback
if c.options.protocolVersionExplicit {
ERROR.Println(CLI, "Connecting to", broker, "CONNACK was not CONN_ACCEPTED, but rather", packets.ConnackReturnCodes[rc])
continue
}
if c.options.ProtocolVersion == 4 {
DEBUG.Println(CLI, "Trying reconnect using MQTT 3.1 protocol")
c.options.ProtocolVersion = 3
goto CONN
}
}
break
} else {
ERROR.Println(CLI, err.Error())
WARN.Println(CLI, "failed to connect to broker, trying next")
rc = packets.ErrNetworkError
}
}
if c.conn == nil {
ERROR.Println(CLI, "Failed to connect to a broker")
c.setConnected(disconnected)
c.persist.Close()
t.returnCode = rc
if rc != packets.ErrNetworkError {
t.setError(packets.ConnErrors[rc])
} else {
t.setError(fmt.Errorf("%s : %s", packets.ConnErrors[rc], err))
}
return
}
c.options.protocolVersionExplicit = true
if c.options.KeepAlive != 0 {
atomic.StoreInt32(&c.pingOutstanding, 0)
c.lastReceived.Store(time.Now())
c.lastSent.Store(time.Now())
c.workers.Add(1)
go keepalive(c)
}
c.incomingPubChan = make(chan *packets.PublishPacket, c.options.MessageChannelDepth)
c.msgRouter.matchAndDispatch(c.incomingPubChan, c.options.Order, c)
c.setConnected(connected)
DEBUG.Println(CLI, "client is connected")
if c.options.OnConnect != nil {
go c.options.OnConnect(c)
}
c.workers.Add(4)
go errorWatch(c)
go alllogic(c)
go outgoing(c)
go incoming(c)
// Take care of any messages in the store
if c.options.CleanSession == false {
c.resume(c.options.ResumeSubs)
} else {
c.persist.Reset()
}
DEBUG.Println(CLI, "exit startClient")
t.flowComplete()
}()
return t
}
// internal function used to reconnect the client when it loses its connection
func (c *client) reconnect() {
DEBUG.Println(CLI, "enter reconnect")
var (
err error
rc = byte(1)
sleep = time.Duration(1 * time.Second)
)
for rc != 0 && atomic.LoadUint32(&c.status) != disconnected {
for _, broker := range c.options.Servers {
cm := newConnectMsgFromOptions(&c.options, broker)
DEBUG.Println(CLI, "about to write new connect msg")
c.Lock()
c.conn, err = openConnection(broker, c.options.TLSConfig, c.options.ConnectTimeout, c.options.HTTPHeaders)
c.Unlock()
if err == nil {
DEBUG.Println(CLI, "socket connected to broker")
switch c.options.ProtocolVersion {
case 0x83:
DEBUG.Println(CLI, "Using MQTT 3.1b protocol")
cm.ProtocolName = "MQIsdp"
cm.ProtocolVersion = 0x83
case 0x84:
DEBUG.Println(CLI, "Using MQTT 3.1.1b protocol")
cm.ProtocolName = "MQTT"
cm.ProtocolVersion = 0x84
case 3:
DEBUG.Println(CLI, "Using MQTT 3.1 protocol")
cm.ProtocolName = "MQIsdp"
cm.ProtocolVersion = 3
default:
DEBUG.Println(CLI, "Using MQTT 3.1.1 protocol")
cm.ProtocolName = "MQTT"
cm.ProtocolVersion = 4
}
cm.Write(c.conn)
rc, _ = c.connect()
if rc != packets.Accepted {
c.conn.Close()
c.conn = nil
//if the protocol version was explicitly set don't do any fallback
if c.options.protocolVersionExplicit {
ERROR.Println(CLI, "Connecting to", broker, "CONNACK was not Accepted, but rather", packets.ConnackReturnCodes[rc])
continue
}
}
break
} else {
ERROR.Println(CLI, err.Error())
WARN.Println(CLI, "failed to connect to broker, trying next")
rc = packets.ErrNetworkError
}
}
if rc != 0 {
DEBUG.Println(CLI, "Reconnect failed, sleeping for", int(sleep.Seconds()), "seconds")
time.Sleep(sleep)
if sleep < c.options.MaxReconnectInterval {
sleep *= 2
}
if sleep > c.options.MaxReconnectInterval {
sleep = c.options.MaxReconnectInterval
}
}
}
// Disconnect() must have been called while we were trying to reconnect.
if c.connectionStatus() == disconnected {
DEBUG.Println(CLI, "Client moved to disconnected state while reconnecting, abandoning reconnect")
return
}
c.stop = make(chan struct{})
if c.options.KeepAlive != 0 {
atomic.StoreInt32(&c.pingOutstanding, 0)
c.lastReceived.Store(time.Now())
c.lastSent.Store(time.Now())
c.workers.Add(1)
go keepalive(c)
}
c.setConnected(connected)
DEBUG.Println(CLI, "client is reconnected")
if c.options.OnConnect != nil {
go c.options.OnConnect(c)
}
c.workers.Add(4)
go errorWatch(c)
go alllogic(c)
go outgoing(c)
go incoming(c)
c.resume(false)
}
// This function is only used for receiving a connack
// when the connection is first started.
// This prevents receiving incoming data while resume
// is in progress if clean session is false.
func (c *client) connect() (byte, bool) {
DEBUG.Println(NET, "connect started")
ca, err := packets.ReadPacket(c.conn)
if err != nil {
ERROR.Println(NET, "connect got error", err)
return packets.ErrNetworkError, false
}
if ca == nil {
ERROR.Println(NET, "received nil packet")
return packets.ErrNetworkError, false
}
msg, ok := ca.(*packets.ConnackPacket)
if !ok {
ERROR.Println(NET, "received msg that was not CONNACK")
return packets.ErrNetworkError, false
}
DEBUG.Println(NET, "received connack")
return msg.ReturnCode, msg.SessionPresent
}
// Disconnect will end the connection with the server, but not before waiting
// the specified number of milliseconds to wait for existing work to be
// completed.
func (c *client) Disconnect(quiesce uint) {
status := atomic.LoadUint32(&c.status)
if status == connected {
DEBUG.Println(CLI, "disconnecting")
c.setConnected(disconnected)
dm := packets.NewControlPacket(packets.Disconnect).(*packets.DisconnectPacket)
dt := newToken(packets.Disconnect)
c.oboundP <- &PacketAndToken{p: dm, t: dt}
// wait for work to finish, or quiesce time consumed
dt.WaitTimeout(time.Duration(quiesce) * time.Millisecond)
} else {
WARN.Println(CLI, "Disconnect() called but not connected (disconnected/reconnecting)")
c.setConnected(disconnected)
}
c.disconnect()
}
// ForceDisconnect will end the connection with the mqtt broker immediately.
func (c *client) forceDisconnect() {
if !c.IsConnected() {
WARN.Println(CLI, "already disconnected")
return
}
c.setConnected(disconnected)
c.conn.Close()
DEBUG.Println(CLI, "forcefully disconnecting")
c.disconnect()
}
func (c *client) internalConnLost(err error) {
// Only do anything if this was called and we are still "connected"
// forceDisconnect can cause incoming/outgoing/alllogic to end with
// error from closing the socket but state will be "disconnected"
if c.IsConnected() {
c.closeStop()
c.conn.Close()
c.workers.Wait()
if c.options.CleanSession && !c.options.AutoReconnect {
c.messageIds.cleanUp()
}
if c.options.AutoReconnect {
c.setConnected(reconnecting)
go c.reconnect()
} else {
c.setConnected(disconnected)
}
if c.options.OnConnectionLost != nil {
go c.options.OnConnectionLost(c, err)
}
}
}
func (c *client) closeStop() {
c.Lock()
defer c.Unlock()
select {
case <-c.stop:
DEBUG.Println("In disconnect and stop channel is already closed")
default:
if c.stop != nil {
close(c.stop)
}
}
}
func (c *client) closeStopRouter() {
c.Lock()
defer c.Unlock()
select {
case <-c.stopRouter:
DEBUG.Println("In disconnect and stop channel is already closed")
default:
if c.stopRouter != nil {
close(c.stopRouter)
}
}
}
func (c *client) closeConn() {
c.Lock()
defer c.Unlock()
if c.conn != nil {
c.conn.Close()
}
}
func (c *client) disconnect() {
c.closeStop()
c.closeConn()
c.workers.Wait()
c.messageIds.cleanUp()
c.closeStopRouter()
DEBUG.Println(CLI, "disconnected")
c.persist.Close()
}
// Publish will publish a message with the specified QoS and content
// to the specified topic.
// Returns a token to track delivery of the message to the broker
func (c *client) Publish(topic string, qos byte, retained bool, payload interface{}) Token {
token := newToken(packets.Publish).(*PublishToken)
DEBUG.Println(CLI, "enter Publish")
switch {
case !c.IsConnected():
token.setError(ErrNotConnected)
return token
case c.connectionStatus() == reconnecting && qos == 0:
token.flowComplete()
return token
}
pub := packets.NewControlPacket(packets.Publish).(*packets.PublishPacket)
pub.Qos = qos
pub.TopicName = topic
pub.Retain = retained
switch payload.(type) {
case string:
pub.Payload = []byte(payload.(string))
case []byte:
pub.Payload = payload.([]byte)
default:
token.setError(fmt.Errorf("Unknown payload type"))
return token
}
if pub.Qos != 0 && pub.MessageID == 0 {
pub.MessageID = c.getID(token)
token.messageID = pub.MessageID
}
persistOutbound(c.persist, pub)
if c.connectionStatus() == reconnecting {
DEBUG.Println(CLI, "storing publish message (reconnecting), topic:", topic)
} else {
DEBUG.Println(CLI, "sending publish message, topic:", topic)
c.obound <- &PacketAndToken{p: pub, t: token}
}
return token
}
// Subscribe starts a new subscription. Provide a MessageHandler to be executed when
// a message is published on the topic provided.
func (c *client) Subscribe(topic string, qos byte, callback MessageHandler) Token {
token := newToken(packets.Subscribe).(*SubscribeToken)
DEBUG.Println(CLI, "enter Subscribe")
if !c.IsConnected() {
token.setError(ErrNotConnected)
return token
}
sub := packets.NewControlPacket(packets.Subscribe).(*packets.SubscribePacket)
if err := validateTopicAndQos(topic, qos); err != nil {
token.setError(err)
return token
}
sub.Topics = append(sub.Topics, topic)
sub.Qoss = append(sub.Qoss, qos)
DEBUG.Println(CLI, sub.String())
if strings.HasPrefix(topic, "$share") {
topic = strings.Join(strings.Split(topic, "/")[2:], "/")
}
if callback != nil {
c.msgRouter.addRoute(topic, callback)
}
token.subs = append(token.subs, topic)
c.oboundP <- &PacketAndToken{p: sub, t: token}
DEBUG.Println(CLI, "exit Subscribe")
return token
}
// SubscribeMultiple starts a new subscription for multiple topics. Provide a MessageHandler to
// be executed when a message is published on one of the topics provided.
func (c *client) SubscribeMultiple(filters map[string]byte, callback MessageHandler) Token {
var err error
token := newToken(packets.Subscribe).(*SubscribeToken)
DEBUG.Println(CLI, "enter SubscribeMultiple")
if !c.IsConnected() {
token.setError(ErrNotConnected)
return token
}
sub := packets.NewControlPacket(packets.Subscribe).(*packets.SubscribePacket)
if sub.Topics, sub.Qoss, err = validateSubscribeMap(filters); err != nil {
token.setError(err)
return token
}
if callback != nil {
for topic := range filters {
c.msgRouter.addRoute(topic, callback)
}
}
token.subs = make([]string, len(sub.Topics))
copy(token.subs, sub.Topics)
c.oboundP <- &PacketAndToken{p: sub, t: token}
DEBUG.Println(CLI, "exit SubscribeMultiple")
return token
}
// Load all stored messages and resend them
// Call this to ensure QOS > 1,2 even after an application crash
func (c *client) resume(subscription bool) {
storedKeys := c.persist.All()
for _, key := range storedKeys {
packet := c.persist.Get(key)
if packet == nil {
continue
}
details := packet.Details()
if isKeyOutbound(key) {
switch packet.(type) {
case *packets.SubscribePacket:
if subscription {
DEBUG.Println(STR, fmt.Sprintf("loaded pending subscribe (%d)", details.MessageID))
token := newToken(packets.Subscribe).(*SubscribeToken)
c.oboundP <- &PacketAndToken{p: packet, t: token}
}
case *packets.UnsubscribePacket:
if subscription {
DEBUG.Println(STR, fmt.Sprintf("loaded pending unsubscribe (%d)", details.MessageID))
token := newToken(packets.Unsubscribe).(*UnsubscribeToken)
c.oboundP <- &PacketAndToken{p: packet, t: token}
}
case *packets.PubrelPacket:
DEBUG.Println(STR, fmt.Sprintf("loaded pending pubrel (%d)", details.MessageID))
select {
case c.oboundP <- &PacketAndToken{p: packet, t: nil}:
case <-c.stop:
}
case *packets.PublishPacket:
token := newToken(packets.Publish).(*PublishToken)
token.messageID = details.MessageID
c.claimID(token, details.MessageID)
DEBUG.Println(STR, fmt.Sprintf("loaded pending publish (%d)", details.MessageID))
DEBUG.Println(STR, details)
c.obound <- &PacketAndToken{p: packet, t: token}
default:
ERROR.Println(STR, "invalid message type in store (discarded)")
c.persist.Del(key)
}
} else {
switch packet.(type) {
case *packets.PubrelPacket, *packets.PublishPacket:
DEBUG.Println(STR, fmt.Sprintf("loaded pending incomming (%d)", details.MessageID))
select {
case c.ibound <- packet:
case <-c.stop:
}
default:
ERROR.Println(STR, "invalid message type in store (discarded)")
c.persist.Del(key)
}
}
}
}
// Unsubscribe will end the subscription from each of the topics provided.
// Messages published to those topics from other clients will no longer be
// received.
func (c *client) Unsubscribe(topics ...string) Token {
token := newToken(packets.Unsubscribe).(*UnsubscribeToken)
DEBUG.Println(CLI, "enter Unsubscribe")
if !c.IsConnected() {
token.setError(ErrNotConnected)
return token
}
unsub := packets.NewControlPacket(packets.Unsubscribe).(*packets.UnsubscribePacket)
unsub.Topics = make([]string, len(topics))
copy(unsub.Topics, topics)
c.oboundP <- &PacketAndToken{p: unsub, t: token}
for _, topic := range topics {
c.msgRouter.deleteRoute(topic)
}
DEBUG.Println(CLI, "exit Unsubscribe")
return token
}
// OptionsReader returns a ClientOptionsReader which is a copy of the clientoptions
// in use by the client.
func (c *client) OptionsReader() ClientOptionsReader {
r := ClientOptionsReader{options: &c.options}
return r
}
//DefaultConnectionLostHandler is a definition of a function that simply
//reports to the DEBUG log the reason for the client losing a connection.
func DefaultConnectionLostHandler(client Client, reason error) {
DEBUG.Println("Connection lost:", reason.Error())
}

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vendor/github.com/eclipse/paho.mqtt.golang/components.go generated vendored Normal file
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/*
* Copyright (c) 2013 IBM Corp.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Seth Hoenig
* Allan Stockdill-Mander
* Mike Robertson
*/
package mqtt
type component string
// Component names for debug output
const (
NET component = "[net] "
PNG component = "[pinger] "
CLI component = "[client] "
DEC component = "[decode] "
MES component = "[message] "
STR component = "[store] "
MID component = "[msgids] "
TST component = "[test] "
STA component = "[state] "
ERR component = "[error] "
)

15
vendor/github.com/eclipse/paho.mqtt.golang/edl-v10 generated vendored Normal file
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Eclipse Distribution License - v 1.0
Copyright (c) 2007, Eclipse Foundation, Inc. and its licensors.
All rights reserved.
Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
Neither the name of the Eclipse Foundation, Inc. nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

70
vendor/github.com/eclipse/paho.mqtt.golang/epl-v10 generated vendored Normal file
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Eclipse Public License - v 1.0
THE ACCOMPANYING PROGRAM IS PROVIDED UNDER THE TERMS OF THIS ECLIPSE PUBLIC LICENSE ("AGREEMENT"). ANY USE, REPRODUCTION OR DISTRIBUTION OF THE PROGRAM CONSTITUTES RECIPIENT'S ACCEPTANCE OF THIS AGREEMENT.
1. DEFINITIONS
"Contribution" means:
a) in the case of the initial Contributor, the initial code and documentation distributed under this Agreement, and
b) in the case of each subsequent Contributor:
i) changes to the Program, and
ii) additions to the Program;
where such changes and/or additions to the Program originate from and are distributed by that particular Contributor. A Contribution 'originates' from a Contributor if it was added to the Program by such Contributor itself or anyone acting on such Contributor's behalf. Contributions do not include additions to the Program which: (i) are separate modules of software distributed in conjunction with the Program under their own license agreement, and (ii) are not derivative works of the Program.
"Contributor" means any person or entity that distributes the Program.
"Licensed Patents" mean patent claims licensable by a Contributor which are necessarily infringed by the use or sale of its Contribution alone or when combined with the Program.
"Program" means the Contributions distributed in accordance with this Agreement.
"Recipient" means anyone who receives the Program under this Agreement, including all Contributors.
2. GRANT OF RIGHTS
a) Subject to the terms of this Agreement, each Contributor hereby grants Recipient a non-exclusive, worldwide, royalty-free copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, distribute and sublicense the Contribution of such Contributor, if any, and such derivative works, in source code and object code form.
b) Subject to the terms of this Agreement, each Contributor hereby grants Recipient a non-exclusive, worldwide, royalty-free patent license under Licensed Patents to make, use, sell, offer to sell, import and otherwise transfer the Contribution of such Contributor, if any, in source code and object code form. This patent license shall apply to the combination of the Contribution and the Program if, at the time the Contribution is added by the Contributor, such addition of the Contribution causes such combination to be covered by the Licensed Patents. The patent license shall not apply to any other combinations which include the Contribution. No hardware per se is licensed hereunder.
c) Recipient understands that although each Contributor grants the licenses to its Contributions set forth herein, no assurances are provided by any Contributor that the Program does not infringe the patent or other intellectual property rights of any other entity. Each Contributor disclaims any liability to Recipient for claims brought by any other entity based on infringement of intellectual property rights or otherwise. As a condition to exercising the rights and licenses granted hereunder, each Recipient hereby assumes sole responsibility to secure any other intellectual property rights needed, if any. For example, if a third party patent license is required to allow Recipient to distribute the Program, it is Recipient's responsibility to acquire that license before distributing the Program.
d) Each Contributor represents that to its knowledge it has sufficient copyright rights in its Contribution, if any, to grant the copyright license set forth in this Agreement.
3. REQUIREMENTS
A Contributor may choose to distribute the Program in object code form under its own license agreement, provided that:
a) it complies with the terms and conditions of this Agreement; and
b) its license agreement:
i) effectively disclaims on behalf of all Contributors all warranties and conditions, express and implied, including warranties or conditions of title and non-infringement, and implied warranties or conditions of merchantability and fitness for a particular purpose;
ii) effectively excludes on behalf of all Contributors all liability for damages, including direct, indirect, special, incidental and consequential damages, such as lost profits;
iii) states that any provisions which differ from this Agreement are offered by that Contributor alone and not by any other party; and
iv) states that source code for the Program is available from such Contributor, and informs licensees how to obtain it in a reasonable manner on or through a medium customarily used for software exchange.
When the Program is made available in source code form:
a) it must be made available under this Agreement; and
b) a copy of this Agreement must be included with each copy of the Program.
Contributors may not remove or alter any copyright notices contained within the Program.
Each Contributor must identify itself as the originator of its Contribution, if any, in a manner that reasonably allows subsequent Recipients to identify the originator of the Contribution.
4. COMMERCIAL DISTRIBUTION
Commercial distributors of software may accept certain responsibilities with respect to end users, business partners and the like. While this license is intended to facilitate the commercial use of the Program, the Contributor who includes the Program in a commercial product offering should do so in a manner which does not create potential liability for other Contributors. Therefore, if a Contributor includes the Program in a commercial product offering, such Contributor ("Commercial Contributor") hereby agrees to defend and indemnify every other Contributor ("Indemnified Contributor") against any losses, damages and costs (collectively "Losses") arising from claims, lawsuits and other legal actions brought by a third party against the Indemnified Contributor to the extent caused by the acts or omissions of such Commercial Contributor in connection with its distribution of the Program in a commercial product offering. The obligations in this section do not apply to any claims or Losses relating to any actual or alleged intellectual property infringement. In order to qualify, an Indemnified Contributor must: a) promptly notify the Commercial Contributor in writing of such claim, and b) allow the Commercial Contributor to control, and cooperate with the Commercial Contributor in, the defense and any related settlement negotiations. The Indemnified Contributor may participate in any such claim at its own expense.
For example, a Contributor might include the Program in a commercial product offering, Product X. That Contributor is then a Commercial Contributor. If that Commercial Contributor then makes performance claims, or offers warranties related to Product X, those performance claims and warranties are such Commercial Contributor's responsibility alone. Under this section, the Commercial Contributor would have to defend claims against the other Contributors related to those performance claims and warranties, and if a court requires any other Contributor to pay any damages as a result, the Commercial Contributor must pay those damages.
5. NO WARRANTY
EXCEPT AS EXPRESSLY SET FORTH IN THIS AGREEMENT, THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT, MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is solely responsible for determining the appropriateness of using and distributing the Program and assumes all risks associated with its exercise of rights under this Agreement , including but not limited to the risks and costs of program errors, compliance with applicable laws, damage to or loss of data, programs or equipment, and unavailability or interruption of operations.
6. DISCLAIMER OF LIABILITY
EXCEPT AS EXPRESSLY SET FORTH IN THIS AGREEMENT, NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
7. GENERAL
If any provision of this Agreement is invalid or unenforceable under applicable law, it shall not affect the validity or enforceability of the remainder of the terms of this Agreement, and without further action by the parties hereto, such provision shall be reformed to the minimum extent necessary to make such provision valid and enforceable.
If Recipient institutes patent litigation against any entity (including a cross-claim or counterclaim in a lawsuit) alleging that the Program itself (excluding combinations of the Program with other software or hardware) infringes such Recipient's patent(s), then such Recipient's rights granted under Section 2(b) shall terminate as of the date such litigation is filed.
All Recipient's rights under this Agreement shall terminate if it fails to comply with any of the material terms or conditions of this Agreement and does not cure such failure in a reasonable period of time after becoming aware of such noncompliance. If all Recipient's rights under this Agreement terminate, Recipient agrees to cease use and distribution of the Program as soon as reasonably practicable. However, Recipient's obligations under this Agreement and any licenses granted by Recipient relating to the Program shall continue and survive.
Everyone is permitted to copy and distribute copies of this Agreement, but in order to avoid inconsistency the Agreement is copyrighted and may only be modified in the following manner. The Agreement Steward reserves the right to publish new versions (including revisions) of this Agreement from time to time. No one other than the Agreement Steward has the right to modify this Agreement. The Eclipse Foundation is the initial Agreement Steward. The Eclipse Foundation may assign the responsibility to serve as the Agreement Steward to a suitable separate entity. Each new version of the Agreement will be given a distinguishing version number. The Program (including Contributions) may always be distributed subject to the version of the Agreement under which it was received. In addition, after a new version of the Agreement is published, Contributor may elect to distribute the Program (including its Contributions) under the new version. Except as expressly stated in Sections 2(a) and 2(b) above, Recipient receives no rights or licenses to the intellectual property of any Contributor under this Agreement, whether expressly, by implication, estoppel or otherwise. All rights in the Program not expressly granted under this Agreement are reserved.
This Agreement is governed by the laws of the State of New York and the intellectual property laws of the United States of America. No party to this Agreement will bring a legal action under this Agreement more than one year after the cause of action arose. Each party waives its rights to a jury trial in any resulting litigation.

255
vendor/github.com/eclipse/paho.mqtt.golang/filestore.go generated vendored Normal file
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/*
* Copyright (c) 2013 IBM Corp.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Seth Hoenig
* Allan Stockdill-Mander
* Mike Robertson
*/
package mqtt
import (
"io/ioutil"
"os"
"path"
"sort"
"sync"
"github.com/eclipse/paho.mqtt.golang/packets"
)
const (
msgExt = ".msg"
tmpExt = ".tmp"
corruptExt = ".CORRUPT"
)
// FileStore implements the store interface using the filesystem to provide
// true persistence, even across client failure. This is designed to use a
// single directory per running client. If you are running multiple clients
// on the same filesystem, you will need to be careful to specify unique
// store directories for each.
type FileStore struct {
sync.RWMutex
directory string
opened bool
}
// NewFileStore will create a new FileStore which stores its messages in the
// directory provided.
func NewFileStore(directory string) *FileStore {
store := &FileStore{
directory: directory,
opened: false,
}
return store
}
// Open will allow the FileStore to be used.
func (store *FileStore) Open() {
store.Lock()
defer store.Unlock()
// if no store directory was specified in ClientOpts, by default use the
// current working directory
if store.directory == "" {
store.directory, _ = os.Getwd()
}
// if store dir exists, great, otherwise, create it
if !exists(store.directory) {
perms := os.FileMode(0770)
merr := os.MkdirAll(store.directory, perms)
chkerr(merr)
}
store.opened = true
DEBUG.Println(STR, "store is opened at", store.directory)
}
// Close will disallow the FileStore from being used.
func (store *FileStore) Close() {
store.Lock()
defer store.Unlock()
store.opened = false
DEBUG.Println(STR, "store is closed")
}
// Put will put a message into the store, associated with the provided
// key value.
func (store *FileStore) Put(key string, m packets.ControlPacket) {
store.Lock()
defer store.Unlock()
if !store.opened {
ERROR.Println(STR, "Trying to use file store, but not open")
return
}
full := fullpath(store.directory, key)
write(store.directory, key, m)
if !exists(full) {
ERROR.Println(STR, "file not created:", full)
}
}
// Get will retrieve a message from the store, the one associated with
// the provided key value.
func (store *FileStore) Get(key string) packets.ControlPacket {
store.RLock()
defer store.RUnlock()
if !store.opened {
ERROR.Println(STR, "Trying to use file store, but not open")
return nil
}
filepath := fullpath(store.directory, key)
if !exists(filepath) {
return nil
}
mfile, oerr := os.Open(filepath)
chkerr(oerr)
msg, rerr := packets.ReadPacket(mfile)
chkerr(mfile.Close())
// Message was unreadable, return nil
if rerr != nil {
newpath := corruptpath(store.directory, key)
WARN.Println(STR, "corrupted file detected:", rerr.Error(), "archived at:", newpath)
os.Rename(filepath, newpath)
return nil
}
return msg
}
// All will provide a list of all of the keys associated with messages
// currenly residing in the FileStore.
func (store *FileStore) All() []string {
store.RLock()
defer store.RUnlock()
return store.all()
}
// Del will remove the persisted message associated with the provided
// key from the FileStore.
func (store *FileStore) Del(key string) {
store.Lock()
defer store.Unlock()
store.del(key)
}
// Reset will remove all persisted messages from the FileStore.
func (store *FileStore) Reset() {
store.Lock()
defer store.Unlock()
WARN.Println(STR, "FileStore Reset")
for _, key := range store.all() {
store.del(key)
}
}
// lockless
func (store *FileStore) all() []string {
var err error
var keys []string
var files fileInfos
if !store.opened {
ERROR.Println(STR, "Trying to use file store, but not open")
return nil
}
files, err = ioutil.ReadDir(store.directory)
chkerr(err)
sort.Sort(files)
for _, f := range files {
DEBUG.Println(STR, "file in All():", f.Name())
name := f.Name()
if name[len(name)-4:len(name)] != msgExt {
DEBUG.Println(STR, "skipping file, doesn't have right extension: ", name)
continue
}
key := name[0 : len(name)-4] // remove file extension
keys = append(keys, key)
}
return keys
}
// lockless
func (store *FileStore) del(key string) {
if !store.opened {
ERROR.Println(STR, "Trying to use file store, but not open")
return
}
DEBUG.Println(STR, "store del filepath:", store.directory)
DEBUG.Println(STR, "store delete key:", key)
filepath := fullpath(store.directory, key)
DEBUG.Println(STR, "path of deletion:", filepath)
if !exists(filepath) {
WARN.Println(STR, "store could not delete key:", key)
return
}
rerr := os.Remove(filepath)
chkerr(rerr)
DEBUG.Println(STR, "del msg:", key)
if exists(filepath) {
ERROR.Println(STR, "file not deleted:", filepath)
}
}
func fullpath(store string, key string) string {
p := path.Join(store, key+msgExt)
return p
}
func tmppath(store string, key string) string {
p := path.Join(store, key+tmpExt)
return p
}
func corruptpath(store string, key string) string {
p := path.Join(store, key+corruptExt)
return p
}
// create file called "X.[messageid].tmp" located in the store
// the contents of the file is the bytes of the message, then
// rename it to "X.[messageid].msg", overwriting any existing
// message with the same id
// X will be 'i' for inbound messages, and O for outbound messages
func write(store, key string, m packets.ControlPacket) {
temppath := tmppath(store, key)
f, err := os.Create(temppath)
chkerr(err)
werr := m.Write(f)
chkerr(werr)
cerr := f.Close()
chkerr(cerr)
rerr := os.Rename(temppath, fullpath(store, key))
chkerr(rerr)
}
func exists(file string) bool {
if _, err := os.Stat(file); err != nil {
if os.IsNotExist(err) {
return false
}
chkerr(err)
}
return true
}
type fileInfos []os.FileInfo
func (f fileInfos) Len() int {
return len(f)
}
func (f fileInfos) Swap(i, j int) {
f[i], f[j] = f[j], f[i]
}
func (f fileInfos) Less(i, j int) bool {
return f[i].ModTime().Before(f[j].ModTime())
}

138
vendor/github.com/eclipse/paho.mqtt.golang/memstore.go generated vendored Normal file
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/*
* Copyright (c) 2013 IBM Corp.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Seth Hoenig
* Allan Stockdill-Mander
* Mike Robertson
*/
package mqtt
import (
"sync"
"github.com/eclipse/paho.mqtt.golang/packets"
)
// MemoryStore implements the store interface to provide a "persistence"
// mechanism wholly stored in memory. This is only useful for
// as long as the client instance exists.
type MemoryStore struct {
sync.RWMutex
messages map[string]packets.ControlPacket
opened bool
}
// NewMemoryStore returns a pointer to a new instance of
// MemoryStore, the instance is not initialized and ready to
// use until Open() has been called on it.
func NewMemoryStore() *MemoryStore {
store := &MemoryStore{
messages: make(map[string]packets.ControlPacket),
opened: false,
}
return store
}
// Open initializes a MemoryStore instance.
func (store *MemoryStore) Open() {
store.Lock()
defer store.Unlock()
store.opened = true
DEBUG.Println(STR, "memorystore initialized")
}
// Put takes a key and a pointer to a Message and stores the
// message.
func (store *MemoryStore) Put(key string, message packets.ControlPacket) {
store.Lock()
defer store.Unlock()
if !store.opened {
ERROR.Println(STR, "Trying to use memory store, but not open")
return
}
store.messages[key] = message
}
// Get takes a key and looks in the store for a matching Message
// returning either the Message pointer or nil.
func (store *MemoryStore) Get(key string) packets.ControlPacket {
store.RLock()
defer store.RUnlock()
if !store.opened {
ERROR.Println(STR, "Trying to use memory store, but not open")
return nil
}
mid := mIDFromKey(key)
m := store.messages[key]
if m == nil {
CRITICAL.Println(STR, "memorystore get: message", mid, "not found")
} else {
DEBUG.Println(STR, "memorystore get: message", mid, "found")
}
return m
}
// All returns a slice of strings containing all the keys currently
// in the MemoryStore.
func (store *MemoryStore) All() []string {
store.RLock()
defer store.RUnlock()
if !store.opened {
ERROR.Println(STR, "Trying to use memory store, but not open")
return nil
}
keys := []string{}
for k := range store.messages {
keys = append(keys, k)
}
return keys
}
// Del takes a key, searches the MemoryStore and if the key is found
// deletes the Message pointer associated with it.
func (store *MemoryStore) Del(key string) {
store.Lock()
defer store.Unlock()
if !store.opened {
ERROR.Println(STR, "Trying to use memory store, but not open")
return
}
mid := mIDFromKey(key)
m := store.messages[key]
if m == nil {
WARN.Println(STR, "memorystore del: message", mid, "not found")
} else {
delete(store.messages, key)
DEBUG.Println(STR, "memorystore del: message", mid, "was deleted")
}
}
// Close will disallow modifications to the state of the store.
func (store *MemoryStore) Close() {
store.Lock()
defer store.Unlock()
if !store.opened {
ERROR.Println(STR, "Trying to close memory store, but not open")
return
}
store.opened = false
DEBUG.Println(STR, "memorystore closed")
}
// Reset eliminates all persisted message data in the store.
func (store *MemoryStore) Reset() {
store.Lock()
defer store.Unlock()
if !store.opened {
ERROR.Println(STR, "Trying to reset memory store, but not open")
}
store.messages = make(map[string]packets.ControlPacket)
WARN.Println(STR, "memorystore wiped")
}

127
vendor/github.com/eclipse/paho.mqtt.golang/message.go generated vendored Normal file
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/*
* Copyright (c) 2013 IBM Corp.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Seth Hoenig
* Allan Stockdill-Mander
* Mike Robertson
*/
package mqtt
import (
"net/url"
"github.com/eclipse/paho.mqtt.golang/packets"
"sync"
)
// Message defines the externals that a message implementation must support
// these are received messages that are passed to the callbacks, not internal
// messages
type Message interface {
Duplicate() bool
Qos() byte
Retained() bool
Topic() string
MessageID() uint16
Payload() []byte
Ack()
}
type message struct {
duplicate bool
qos byte
retained bool
topic string
messageID uint16
payload []byte
once sync.Once
ack func()
}
func (m *message) Duplicate() bool {
return m.duplicate
}
func (m *message) Qos() byte {
return m.qos
}
func (m *message) Retained() bool {
return m.retained
}
func (m *message) Topic() string {
return m.topic
}
func (m *message) MessageID() uint16 {
return m.messageID
}
func (m *message) Payload() []byte {
return m.payload
}
func (m *message) Ack() {
m.once.Do(m.ack)
}
func messageFromPublish(p *packets.PublishPacket, ack func()) Message {
return &message{
duplicate: p.Dup,
qos: p.Qos,
retained: p.Retain,
topic: p.TopicName,
messageID: p.MessageID,
payload: p.Payload,
ack: ack,
}
}
func newConnectMsgFromOptions(options *ClientOptions, broker *url.URL) *packets.ConnectPacket {
m := packets.NewControlPacket(packets.Connect).(*packets.ConnectPacket)
m.CleanSession = options.CleanSession
m.WillFlag = options.WillEnabled
m.WillRetain = options.WillRetained
m.ClientIdentifier = options.ClientID
if options.WillEnabled {
m.WillQos = options.WillQos
m.WillTopic = options.WillTopic
m.WillMessage = options.WillPayload
}
username := options.Username
password := options.Password
if broker.User != nil {
username = broker.User.Username()
if pwd, ok := broker.User.Password(); ok {
password = pwd
}
}
if options.CredentialsProvider != nil {
username, password = options.CredentialsProvider()
}
if username != "" {
m.UsernameFlag = true
m.Username = username
//mustn't have password without user as well
if password != "" {
m.PasswordFlag = true
m.Password = []byte(password)
}
}
m.Keepalive = uint16(options.KeepAlive)
return m
}

117
vendor/github.com/eclipse/paho.mqtt.golang/messageids.go generated vendored Normal file
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/*
* Copyright (c) 2013 IBM Corp.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Seth Hoenig
* Allan Stockdill-Mander
* Mike Robertson
*/
package mqtt
import (
"fmt"
"sync"
"time"
)
// MId is 16 bit message id as specified by the MQTT spec.
// In general, these values should not be depended upon by
// the client application.
type MId uint16
type messageIds struct {
sync.RWMutex
index map[uint16]tokenCompletor
}
const (
midMin uint16 = 1
midMax uint16 = 65535
)
func (mids *messageIds) cleanUp() {
mids.Lock()
for _, token := range mids.index {
switch token.(type) {
case *PublishToken:
token.setError(fmt.Errorf("Connection lost before Publish completed"))
case *SubscribeToken:
token.setError(fmt.Errorf("Connection lost before Subscribe completed"))
case *UnsubscribeToken:
token.setError(fmt.Errorf("Connection lost before Unsubscribe completed"))
case nil:
continue
}
token.flowComplete()
}
mids.index = make(map[uint16]tokenCompletor)
mids.Unlock()
DEBUG.Println(MID, "cleaned up")
}
func (mids *messageIds) freeID(id uint16) {
mids.Lock()
delete(mids.index, id)
mids.Unlock()
}
func (mids *messageIds) claimID(token tokenCompletor, id uint16) {
mids.Lock()
defer mids.Unlock()
if _, ok := mids.index[id]; !ok {
mids.index[id] = token
} else {
old := mids.index[id]
old.flowComplete()
mids.index[id] = token
}
}
func (mids *messageIds) getID(t tokenCompletor) uint16 {
mids.Lock()
defer mids.Unlock()
for i := midMin; i < midMax; i++ {
if _, ok := mids.index[i]; !ok {
mids.index[i] = t
return i
}
}
return 0
}
func (mids *messageIds) getToken(id uint16) tokenCompletor {
mids.RLock()
defer mids.RUnlock()
if token, ok := mids.index[id]; ok {
return token
}
return &DummyToken{id: id}
}
type DummyToken struct {
id uint16
}
func (d *DummyToken) Wait() bool {
return true
}
func (d *DummyToken) WaitTimeout(t time.Duration) bool {
return true
}
func (d *DummyToken) flowComplete() {
ERROR.Printf("A lookup for token %d returned nil\n", d.id)
}
func (d *DummyToken) Error() error {
return nil
}
func (d *DummyToken) setError(e error) {}

355
vendor/github.com/eclipse/paho.mqtt.golang/net.go generated vendored Normal file
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/*
* Copyright (c) 2013 IBM Corp.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Seth Hoenig
* Allan Stockdill-Mander
* Mike Robertson
*/
package mqtt
import (
"crypto/tls"
"errors"
"fmt"
"net"
"net/http"
"net/url"
"os"
"reflect"
"sync/atomic"
"time"
"github.com/eclipse/paho.mqtt.golang/packets"
"golang.org/x/net/proxy"
"golang.org/x/net/websocket"
)
func signalError(c chan<- error, err error) {
select {
case c <- err:
default:
}
}
func openConnection(uri *url.URL, tlsc *tls.Config, timeout time.Duration, headers http.Header) (net.Conn, error) {
switch uri.Scheme {
case "ws":
config, _ := websocket.NewConfig(uri.String(), fmt.Sprintf("http://%s", uri.Host))
config.Protocol = []string{"mqtt"}
config.Header = headers
config.Dialer = &net.Dialer{Timeout: timeout}
conn, err := websocket.DialConfig(config)
if err != nil {
return nil, err
}
conn.PayloadType = websocket.BinaryFrame
return conn, err
case "wss":
config, _ := websocket.NewConfig(uri.String(), fmt.Sprintf("https://%s", uri.Host))
config.Protocol = []string{"mqtt"}
config.TlsConfig = tlsc
config.Header = headers
config.Dialer = &net.Dialer{Timeout: timeout}
conn, err := websocket.DialConfig(config)
if err != nil {
return nil, err
}
conn.PayloadType = websocket.BinaryFrame
return conn, err
case "tcp":
allProxy := os.Getenv("all_proxy")
if len(allProxy) == 0 {
conn, err := net.DialTimeout("tcp", uri.Host, timeout)
if err != nil {
return nil, err
}
return conn, nil
}
proxyDialer := proxy.FromEnvironment()
conn, err := proxyDialer.Dial("tcp", uri.Host)
if err != nil {
return nil, err
}
return conn, nil
case "unix":
conn, err := net.DialTimeout("unix", uri.Host, timeout)
if err != nil {
return nil, err
}
return conn, nil
case "ssl":
fallthrough
case "tls":
fallthrough
case "tcps":
allProxy := os.Getenv("all_proxy")
if len(allProxy) == 0 {
conn, err := tls.DialWithDialer(&net.Dialer{Timeout: timeout}, "tcp", uri.Host, tlsc)
if err != nil {
return nil, err
}
return conn, nil
}
proxyDialer := proxy.FromEnvironment()
conn, err := proxyDialer.Dial("tcp", uri.Host)
if err != nil {
return nil, err
}
tlsConn := tls.Client(conn, tlsc)
err = tlsConn.Handshake()
if err != nil {
conn.Close()
return nil, err
}
return tlsConn, nil
}
return nil, errors.New("Unknown protocol")
}
// actually read incoming messages off the wire
// send Message object into ibound channel
func incoming(c *client) {
var err error
var cp packets.ControlPacket
defer c.workers.Done()
DEBUG.Println(NET, "incoming started")
for {
if cp, err = packets.ReadPacket(c.conn); err != nil {
break
}
DEBUG.Println(NET, "Received Message")
select {
case c.ibound <- cp:
// Notify keepalive logic that we recently received a packet
if c.options.KeepAlive != 0 {
c.lastReceived.Store(time.Now())
}
case <-c.stop:
// This avoids a deadlock should a message arrive while shutting down.
// In that case the "reader" of c.ibound might already be gone
WARN.Println(NET, "incoming dropped a received message during shutdown")
break
}
}
// We received an error on read.
// If disconnect is in progress, swallow error and return
select {
case <-c.stop:
DEBUG.Println(NET, "incoming stopped")
return
// Not trying to disconnect, send the error to the errors channel
default:
ERROR.Println(NET, "incoming stopped with error", err)
signalError(c.errors, err)
return
}
}
// receive a Message object on obound, and then
// actually send outgoing message to the wire
func outgoing(c *client) {
defer c.workers.Done()
DEBUG.Println(NET, "outgoing started")
for {
DEBUG.Println(NET, "outgoing waiting for an outbound message")
select {
case <-c.stop:
DEBUG.Println(NET, "outgoing stopped")
return
case pub := <-c.obound:
msg := pub.p.(*packets.PublishPacket)
if c.options.WriteTimeout > 0 {
c.conn.SetWriteDeadline(time.Now().Add(c.options.WriteTimeout))
}
if err := msg.Write(c.conn); err != nil {
ERROR.Println(NET, "outgoing stopped with error", err)
pub.t.setError(err)
signalError(c.errors, err)
return
}
if c.options.WriteTimeout > 0 {
// If we successfully wrote, we don't want the timeout to happen during an idle period
// so we reset it to infinite.
c.conn.SetWriteDeadline(time.Time{})
}
if msg.Qos == 0 {
pub.t.flowComplete()
}
DEBUG.Println(NET, "obound wrote msg, id:", msg.MessageID)
case msg := <-c.oboundP:
switch msg.p.(type) {
case *packets.SubscribePacket:
msg.p.(*packets.SubscribePacket).MessageID = c.getID(msg.t)
case *packets.UnsubscribePacket:
msg.p.(*packets.UnsubscribePacket).MessageID = c.getID(msg.t)
}
DEBUG.Println(NET, "obound priority msg to write, type", reflect.TypeOf(msg.p))
if err := msg.p.Write(c.conn); err != nil {
ERROR.Println(NET, "outgoing stopped with error", err)
if msg.t != nil {
msg.t.setError(err)
}
signalError(c.errors, err)
return
}
switch msg.p.(type) {
case *packets.DisconnectPacket:
msg.t.(*DisconnectToken).flowComplete()
DEBUG.Println(NET, "outbound wrote disconnect, stopping")
return
}
}
// Reset ping timer after sending control packet.
if c.options.KeepAlive != 0 {
c.lastSent.Store(time.Now())
}
}
}
// receive Message objects on ibound
// store messages if necessary
// send replies on obound
// delete messages from store if necessary
func alllogic(c *client) {
defer c.workers.Done()
DEBUG.Println(NET, "logic started")
for {
DEBUG.Println(NET, "logic waiting for msg on ibound")
select {
case msg := <-c.ibound:
DEBUG.Println(NET, "logic got msg on ibound")
persistInbound(c.persist, msg)
switch m := msg.(type) {
case *packets.PingrespPacket:
DEBUG.Println(NET, "received pingresp")
atomic.StoreInt32(&c.pingOutstanding, 0)
case *packets.SubackPacket:
DEBUG.Println(NET, "received suback, id:", m.MessageID)
token := c.getToken(m.MessageID)
switch t := token.(type) {
case *SubscribeToken:
DEBUG.Println(NET, "granted qoss", m.ReturnCodes)
for i, qos := range m.ReturnCodes {
t.subResult[t.subs[i]] = qos
}
}
token.flowComplete()
c.freeID(m.MessageID)
case *packets.UnsubackPacket:
DEBUG.Println(NET, "received unsuback, id:", m.MessageID)
c.getToken(m.MessageID).flowComplete()
c.freeID(m.MessageID)
case *packets.PublishPacket:
DEBUG.Println(NET, "received publish, msgId:", m.MessageID)
DEBUG.Println(NET, "putting msg on onPubChan")
switch m.Qos {
case 2:
c.incomingPubChan <- m
DEBUG.Println(NET, "done putting msg on incomingPubChan")
case 1:
c.incomingPubChan <- m
DEBUG.Println(NET, "done putting msg on incomingPubChan")
case 0:
select {
case c.incomingPubChan <- m:
case <-c.stop:
}
DEBUG.Println(NET, "done putting msg on incomingPubChan")
}
case *packets.PubackPacket:
DEBUG.Println(NET, "received puback, id:", m.MessageID)
// c.receipts.get(msg.MsgId()) <- Receipt{}
// c.receipts.end(msg.MsgId())
c.getToken(m.MessageID).flowComplete()
c.freeID(m.MessageID)
case *packets.PubrecPacket:
DEBUG.Println(NET, "received pubrec, id:", m.MessageID)
prel := packets.NewControlPacket(packets.Pubrel).(*packets.PubrelPacket)
prel.MessageID = m.MessageID
select {
case c.oboundP <- &PacketAndToken{p: prel, t: nil}:
case <-c.stop:
}
case *packets.PubrelPacket:
DEBUG.Println(NET, "received pubrel, id:", m.MessageID)
pc := packets.NewControlPacket(packets.Pubcomp).(*packets.PubcompPacket)
pc.MessageID = m.MessageID
persistOutbound(c.persist, pc)
select {
case c.oboundP <- &PacketAndToken{p: pc, t: nil}:
case <-c.stop:
}
case *packets.PubcompPacket:
DEBUG.Println(NET, "received pubcomp, id:", m.MessageID)
c.getToken(m.MessageID).flowComplete()
c.freeID(m.MessageID)
}
case <-c.stop:
WARN.Println(NET, "logic stopped")
return
}
}
}
func (c *client) ackFunc(packet *packets.PublishPacket) func() {
return func() {
switch packet.Qos {
case 2:
pr := packets.NewControlPacket(packets.Pubrec).(*packets.PubrecPacket)
pr.MessageID = packet.MessageID
DEBUG.Println(NET, "putting pubrec msg on obound")
select {
case c.oboundP <- &PacketAndToken{p: pr, t: nil}:
case <-c.stop:
}
DEBUG.Println(NET, "done putting pubrec msg on obound")
case 1:
pa := packets.NewControlPacket(packets.Puback).(*packets.PubackPacket)
pa.MessageID = packet.MessageID
DEBUG.Println(NET, "putting puback msg on obound")
persistOutbound(c.persist, pa)
select {
case c.oboundP <- &PacketAndToken{p: pa, t: nil}:
case <-c.stop:
}
DEBUG.Println(NET, "done putting puback msg on obound")
case 0:
// do nothing, since there is no need to send an ack packet back
}
}
}
func errorWatch(c *client) {
defer c.workers.Done()
select {
case <-c.stop:
WARN.Println(NET, "errorWatch stopped")
return
case err := <-c.errors:
ERROR.Println(NET, "error triggered, stopping")
go c.internalConnLost(err)
return
}
}

108
vendor/github.com/eclipse/paho.mqtt.golang/notice.html generated vendored Normal file
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<?xml version="1.0" encoding="ISO-8859-1" ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1" />
<title>Eclipse Foundation Software User Agreement</title>
</head>
<body lang="EN-US">
<h2>Eclipse Foundation Software User Agreement</h2>
<p>February 1, 2011</p>
<h3>Usage Of Content</h3>
<p>THE ECLIPSE FOUNDATION MAKES AVAILABLE SOFTWARE, DOCUMENTATION, INFORMATION AND/OR OTHER MATERIALS FOR OPEN SOURCE PROJECTS
(COLLECTIVELY &quot;CONTENT&quot;). USE OF THE CONTENT IS GOVERNED BY THE TERMS AND CONDITIONS OF THIS AGREEMENT AND/OR THE TERMS AND
CONDITIONS OF LICENSE AGREEMENTS OR NOTICES INDICATED OR REFERENCED BELOW. BY USING THE CONTENT, YOU AGREE THAT YOUR USE
OF THE CONTENT IS GOVERNED BY THIS AGREEMENT AND/OR THE TERMS AND CONDITIONS OF ANY APPLICABLE LICENSE AGREEMENTS OR
NOTICES INDICATED OR REFERENCED BELOW. IF YOU DO NOT AGREE TO THE TERMS AND CONDITIONS OF THIS AGREEMENT AND THE TERMS AND
CONDITIONS OF ANY APPLICABLE LICENSE AGREEMENTS OR NOTICES INDICATED OR REFERENCED BELOW, THEN YOU MAY NOT USE THE CONTENT.</p>
<h3>Applicable Licenses</h3>
<p>Unless otherwise indicated, all Content made available by the Eclipse Foundation is provided to you under the terms and conditions of the Eclipse Public License Version 1.0
(&quot;EPL&quot;). A copy of the EPL is provided with this Content and is also available at <a href="http://www.eclipse.org/legal/epl-v10.html">http://www.eclipse.org/legal/epl-v10.html</a>.
For purposes of the EPL, &quot;Program&quot; will mean the Content.</p>
<p>Content includes, but is not limited to, source code, object code, documentation and other files maintained in the Eclipse Foundation source code
repository (&quot;Repository&quot;) in software modules (&quot;Modules&quot;) and made available as downloadable archives (&quot;Downloads&quot;).</p>
<ul>
<li>Content may be structured and packaged into modules to facilitate delivering, extending, and upgrading the Content. Typical modules may include plug-ins (&quot;Plug-ins&quot;), plug-in fragments (&quot;Fragments&quot;), and features (&quot;Features&quot;).</li>
<li>Each Plug-in or Fragment may be packaged as a sub-directory or JAR (Java&trade; ARchive) in a directory named &quot;plugins&quot;.</li>
<li>A Feature is a bundle of one or more Plug-ins and/or Fragments and associated material. Each Feature may be packaged as a sub-directory in a directory named &quot;features&quot;. Within a Feature, files named &quot;feature.xml&quot; may contain a list of the names and version numbers of the Plug-ins
and/or Fragments associated with that Feature.</li>
<li>Features may also include other Features (&quot;Included Features&quot;). Within a Feature, files named &quot;feature.xml&quot; may contain a list of the names and version numbers of Included Features.</li>
</ul>
<p>The terms and conditions governing Plug-ins and Fragments should be contained in files named &quot;about.html&quot; (&quot;Abouts&quot;). The terms and conditions governing Features and
Included Features should be contained in files named &quot;license.html&quot; (&quot;Feature Licenses&quot;). Abouts and Feature Licenses may be located in any directory of a Download or Module
including, but not limited to the following locations:</p>
<ul>
<li>The top-level (root) directory</li>
<li>Plug-in and Fragment directories</li>
<li>Inside Plug-ins and Fragments packaged as JARs</li>
<li>Sub-directories of the directory named &quot;src&quot; of certain Plug-ins</li>
<li>Feature directories</li>
</ul>
<p>Note: if a Feature made available by the Eclipse Foundation is installed using the Provisioning Technology (as defined below), you must agree to a license (&quot;Feature Update License&quot;) during the
installation process. If the Feature contains Included Features, the Feature Update License should either provide you with the terms and conditions governing the Included Features or
inform you where you can locate them. Feature Update Licenses may be found in the &quot;license&quot; property of files named &quot;feature.properties&quot; found within a Feature.
Such Abouts, Feature Licenses, and Feature Update Licenses contain the terms and conditions (or references to such terms and conditions) that govern your use of the associated Content in
that directory.</p>
<p>THE ABOUTS, FEATURE LICENSES, AND FEATURE UPDATE LICENSES MAY REFER TO THE EPL OR OTHER LICENSE AGREEMENTS, NOTICES OR TERMS AND CONDITIONS. SOME OF THESE
OTHER LICENSE AGREEMENTS MAY INCLUDE (BUT ARE NOT LIMITED TO):</p>
<ul>
<li>Eclipse Distribution License Version 1.0 (available at <a href="http://www.eclipse.org/licenses/edl-v10.html">http://www.eclipse.org/licenses/edl-v1.0.html</a>)</li>
<li>Common Public License Version 1.0 (available at <a href="http://www.eclipse.org/legal/cpl-v10.html">http://www.eclipse.org/legal/cpl-v10.html</a>)</li>
<li>Apache Software License 1.1 (available at <a href="http://www.apache.org/licenses/LICENSE">http://www.apache.org/licenses/LICENSE</a>)</li>
<li>Apache Software License 2.0 (available at <a href="http://www.apache.org/licenses/LICENSE-2.0">http://www.apache.org/licenses/LICENSE-2.0</a>)</li>
<li>Metro Link Public License 1.00 (available at <a href="http://www.opengroup.org/openmotif/supporters/metrolink/license.html">http://www.opengroup.org/openmotif/supporters/metrolink/license.html</a>)</li>
<li>Mozilla Public License Version 1.1 (available at <a href="http://www.mozilla.org/MPL/MPL-1.1.html">http://www.mozilla.org/MPL/MPL-1.1.html</a>)</li>
</ul>
<p>IT IS YOUR OBLIGATION TO READ AND ACCEPT ALL SUCH TERMS AND CONDITIONS PRIOR TO USE OF THE CONTENT. If no About, Feature License, or Feature Update License is provided, please
contact the Eclipse Foundation to determine what terms and conditions govern that particular Content.</p>
<h3>Use of Provisioning Technology</h3>
<p>The Eclipse Foundation makes available provisioning software, examples of which include, but are not limited to, p2 and the Eclipse
Update Manager (&quot;Provisioning Technology&quot;) for the purpose of allowing users to install software, documentation, information and/or
other materials (collectively &quot;Installable Software&quot;). This capability is provided with the intent of allowing such users to
install, extend and update Eclipse-based products. Information about packaging Installable Software is available at <a
href="http://eclipse.org/equinox/p2/repository_packaging.html">http://eclipse.org/equinox/p2/repository_packaging.html</a>
(&quot;Specification&quot;).</p>
<p>You may use Provisioning Technology to allow other parties to install Installable Software. You shall be responsible for enabling the
applicable license agreements relating to the Installable Software to be presented to, and accepted by, the users of the Provisioning Technology
in accordance with the Specification. By using Provisioning Technology in such a manner and making it available in accordance with the
Specification, you further acknowledge your agreement to, and the acquisition of all necessary rights to permit the following:</p>
<ol>
<li>A series of actions may occur (&quot;Provisioning Process&quot;) in which a user may execute the Provisioning Technology
on a machine (&quot;Target Machine&quot;) with the intent of installing, extending or updating the functionality of an Eclipse-based
product.</li>
<li>During the Provisioning Process, the Provisioning Technology may cause third party Installable Software or a portion thereof to be
accessed and copied to the Target Machine.</li>
<li>Pursuant to the Specification, you will provide to the user the terms and conditions that govern the use of the Installable
Software (&quot;Installable Software Agreement&quot;) and such Installable Software Agreement shall be accessed from the Target
Machine in accordance with the Specification. Such Installable Software Agreement must inform the user of the terms and conditions that govern
the Installable Software and must solicit acceptance by the end user in the manner prescribed in such Installable Software Agreement. Upon such
indication of agreement by the user, the provisioning Technology will complete installation of the Installable Software.</li>
</ol>
<h3>Cryptography</h3>
<p>Content may contain encryption software. The country in which you are currently may have restrictions on the import, possession, and use, and/or re-export to
another country, of encryption software. BEFORE using any encryption software, please check the country's laws, regulations and policies concerning the import,
possession, or use, and re-export of encryption software, to see if this is permitted.</p>
<p><small>Java and all Java-based trademarks are trademarks of Oracle Corporation in the United States, other countries, or both.</small></p>
</body>
</html>

21
vendor/github.com/eclipse/paho.mqtt.golang/oops.go generated vendored Normal file
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/*
* Copyright (c) 2013 IBM Corp.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Seth Hoenig
* Allan Stockdill-Mander
* Mike Robertson
*/
package mqtt
func chkerr(e error) {
if e != nil {
panic(e)
}
}

340
vendor/github.com/eclipse/paho.mqtt.golang/options.go generated vendored Normal file
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/*
* Copyright (c) 2013 IBM Corp.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Seth Hoenig
* Allan Stockdill-Mander
* Mike Robertson
*/
// Portions copyright © 2018 TIBCO Software Inc.
package mqtt
import (
"crypto/tls"
"net/http"
"net/url"
"strings"
"time"
)
// CredentialsProvider allows the username and password to be updated
// before reconnecting. It should return the current username and password.
type CredentialsProvider func() (username string, password string)
// MessageHandler is a callback type which can be set to be
// executed upon the arrival of messages published to topics
// to which the client is subscribed.
type MessageHandler func(Client, Message)
// ConnectionLostHandler is a callback type which can be set to be
// executed upon an unintended disconnection from the MQTT broker.
// Disconnects caused by calling Disconnect or ForceDisconnect will
// not cause an OnConnectionLost callback to execute.
type ConnectionLostHandler func(Client, error)
// OnConnectHandler is a callback that is called when the client
// state changes from unconnected/disconnected to connected. Both
// at initial connection and on reconnection
type OnConnectHandler func(Client)
// ClientOptions contains configurable options for an Client.
type ClientOptions struct {
Servers []*url.URL
ClientID string
Username string
Password string
CredentialsProvider CredentialsProvider
CleanSession bool
Order bool
WillEnabled bool
WillTopic string
WillPayload []byte
WillQos byte
WillRetained bool
ProtocolVersion uint
protocolVersionExplicit bool
TLSConfig *tls.Config
KeepAlive int64
PingTimeout time.Duration
ConnectTimeout time.Duration
MaxReconnectInterval time.Duration
AutoReconnect bool
Store Store
DefaultPublishHandler MessageHandler
OnConnect OnConnectHandler
OnConnectionLost ConnectionLostHandler
WriteTimeout time.Duration
MessageChannelDepth uint
ResumeSubs bool
HTTPHeaders http.Header
}
// NewClientOptions will create a new ClientClientOptions type with some
// default values.
// Port: 1883
// CleanSession: True
// Order: True
// KeepAlive: 30 (seconds)
// ConnectTimeout: 30 (seconds)
// MaxReconnectInterval 10 (minutes)
// AutoReconnect: True
func NewClientOptions() *ClientOptions {
o := &ClientOptions{
Servers: nil,
ClientID: "",
Username: "",
Password: "",
CleanSession: true,
Order: true,
WillEnabled: false,
WillTopic: "",
WillPayload: nil,
WillQos: 0,
WillRetained: false,
ProtocolVersion: 0,
protocolVersionExplicit: false,
KeepAlive: 30,
PingTimeout: 10 * time.Second,
ConnectTimeout: 30 * time.Second,
MaxReconnectInterval: 10 * time.Minute,
AutoReconnect: true,
Store: nil,
OnConnect: nil,
OnConnectionLost: DefaultConnectionLostHandler,
WriteTimeout: 0, // 0 represents timeout disabled
MessageChannelDepth: 100,
ResumeSubs: false,
HTTPHeaders: make(map[string][]string),
}
return o
}
// AddBroker adds a broker URI to the list of brokers to be used. The format should be
// scheme://host:port
// Where "scheme" is one of "tcp", "ssl", or "ws", "host" is the ip-address (or hostname)
// and "port" is the port on which the broker is accepting connections.
//
// Default values for hostname is "127.0.0.1", for schema is "tcp://".
//
// An example broker URI would look like: tcp://foobar.com:1883
func (o *ClientOptions) AddBroker(server string) *ClientOptions {
if len(server) > 0 && server[0] == ':' {
server = "127.0.0.1" + server
}
if !strings.Contains(server, "://") {
server = "tcp://" + server
}
brokerURI, err := url.Parse(server)
if err != nil {
ERROR.Println(CLI, "Failed to parse %q broker address: %s", server, err)
return o
}
o.Servers = append(o.Servers, brokerURI)
return o
}
// SetResumeSubs will enable resuming of stored (un)subscribe messages when connecting
// but not reconnecting if CleanSession is false. Otherwise these messages are discarded.
func (o *ClientOptions) SetResumeSubs(resume bool) *ClientOptions {
o.ResumeSubs = resume
return o
}
// SetClientID will set the client id to be used by this client when
// connecting to the MQTT broker. According to the MQTT v3.1 specification,
// a client id mus be no longer than 23 characters.
func (o *ClientOptions) SetClientID(id string) *ClientOptions {
o.ClientID = id
return o
}
// SetUsername will set the username to be used by this client when connecting
// to the MQTT broker. Note: without the use of SSL/TLS, this information will
// be sent in plaintext accross the wire.
func (o *ClientOptions) SetUsername(u string) *ClientOptions {
o.Username = u
return o
}
// SetPassword will set the password to be used by this client when connecting
// to the MQTT broker. Note: without the use of SSL/TLS, this information will
// be sent in plaintext accross the wire.
func (o *ClientOptions) SetPassword(p string) *ClientOptions {
o.Password = p
return o
}
// SetCredentialsProvider will set a method to be called by this client when
// connecting to the MQTT broker that provide the current username and password.
// Note: without the use of SSL/TLS, this information will be sent
// in plaintext accross the wire.
func (o *ClientOptions) SetCredentialsProvider(p CredentialsProvider) *ClientOptions {
o.CredentialsProvider = p
return o
}
// SetCleanSession will set the "clean session" flag in the connect message
// when this client connects to an MQTT broker. By setting this flag, you are
// indicating that no messages saved by the broker for this client should be
// delivered. Any messages that were going to be sent by this client before
// diconnecting previously but didn't will not be sent upon connecting to the
// broker.
func (o *ClientOptions) SetCleanSession(clean bool) *ClientOptions {
o.CleanSession = clean
return o
}
// SetOrderMatters will set the message routing to guarantee order within
// each QoS level. By default, this value is true. If set to false,
// this flag indicates that messages can be delivered asynchronously
// from the client to the application and possibly arrive out of order.
func (o *ClientOptions) SetOrderMatters(order bool) *ClientOptions {
o.Order = order
return o
}
// SetTLSConfig will set an SSL/TLS configuration to be used when connecting
// to an MQTT broker. Please read the official Go documentation for more
// information.
func (o *ClientOptions) SetTLSConfig(t *tls.Config) *ClientOptions {
o.TLSConfig = t
return o
}
// SetStore will set the implementation of the Store interface
// used to provide message persistence in cases where QoS levels
// QoS_ONE or QoS_TWO are used. If no store is provided, then the
// client will use MemoryStore by default.
func (o *ClientOptions) SetStore(s Store) *ClientOptions {
o.Store = s
return o
}
// SetKeepAlive will set the amount of time (in seconds) that the client
// should wait before sending a PING request to the broker. This will
// allow the client to know that a connection has not been lost with the
// server.
func (o *ClientOptions) SetKeepAlive(k time.Duration) *ClientOptions {
o.KeepAlive = int64(k / time.Second)
return o
}
// SetPingTimeout will set the amount of time (in seconds) that the client
// will wait after sending a PING request to the broker, before deciding
// that the connection has been lost. Default is 10 seconds.
func (o *ClientOptions) SetPingTimeout(k time.Duration) *ClientOptions {
o.PingTimeout = k
return o
}
// SetProtocolVersion sets the MQTT version to be used to connect to the
// broker. Legitimate values are currently 3 - MQTT 3.1 or 4 - MQTT 3.1.1
func (o *ClientOptions) SetProtocolVersion(pv uint) *ClientOptions {
if (pv >= 3 && pv <= 4) || (pv > 0x80) {
o.ProtocolVersion = pv
o.protocolVersionExplicit = true
}
return o
}
// UnsetWill will cause any set will message to be disregarded.
func (o *ClientOptions) UnsetWill() *ClientOptions {
o.WillEnabled = false
return o
}
// SetWill accepts a string will message to be set. When the client connects,
// it will give this will message to the broker, which will then publish the
// provided payload (the will) to any clients that are subscribed to the provided
// topic.
func (o *ClientOptions) SetWill(topic string, payload string, qos byte, retained bool) *ClientOptions {
o.SetBinaryWill(topic, []byte(payload), qos, retained)
return o
}
// SetBinaryWill accepts a []byte will message to be set. When the client connects,
// it will give this will message to the broker, which will then publish the
// provided payload (the will) to any clients that are subscribed to the provided
// topic.
func (o *ClientOptions) SetBinaryWill(topic string, payload []byte, qos byte, retained bool) *ClientOptions {
o.WillEnabled = true
o.WillTopic = topic
o.WillPayload = payload
o.WillQos = qos
o.WillRetained = retained
return o
}
// SetDefaultPublishHandler sets the MessageHandler that will be called when a message
// is received that does not match any known subscriptions.
func (o *ClientOptions) SetDefaultPublishHandler(defaultHandler MessageHandler) *ClientOptions {
o.DefaultPublishHandler = defaultHandler
return o
}
// SetOnConnectHandler sets the function to be called when the client is connected. Both
// at initial connection time and upon automatic reconnect.
func (o *ClientOptions) SetOnConnectHandler(onConn OnConnectHandler) *ClientOptions {
o.OnConnect = onConn
return o
}
// SetConnectionLostHandler will set the OnConnectionLost callback to be executed
// in the case where the client unexpectedly loses connection with the MQTT broker.
func (o *ClientOptions) SetConnectionLostHandler(onLost ConnectionLostHandler) *ClientOptions {
o.OnConnectionLost = onLost
return o
}
// SetWriteTimeout puts a limit on how long a mqtt publish should block until it unblocks with a
// timeout error. A duration of 0 never times out. Default 30 seconds
func (o *ClientOptions) SetWriteTimeout(t time.Duration) *ClientOptions {
o.WriteTimeout = t
return o
}
// SetConnectTimeout limits how long the client will wait when trying to open a connection
// to an MQTT server before timeing out and erroring the attempt. A duration of 0 never times out.
// Default 30 seconds. Currently only operational on TCP/TLS connections.
func (o *ClientOptions) SetConnectTimeout(t time.Duration) *ClientOptions {
o.ConnectTimeout = t
return o
}
// SetMaxReconnectInterval sets the maximum time that will be waited between reconnection attempts
// when connection is lost
func (o *ClientOptions) SetMaxReconnectInterval(t time.Duration) *ClientOptions {
o.MaxReconnectInterval = t
return o
}
// SetAutoReconnect sets whether the automatic reconnection logic should be used
// when the connection is lost, even if disabled the ConnectionLostHandler is still
// called
func (o *ClientOptions) SetAutoReconnect(a bool) *ClientOptions {
o.AutoReconnect = a
return o
}
// SetMessageChannelDepth sets the size of the internal queue that holds messages while the
// client is temporairily offline, allowing the application to publish when the client is
// reconnecting. This setting is only valid if AutoReconnect is set to true, it is otherwise
// ignored.
func (o *ClientOptions) SetMessageChannelDepth(s uint) *ClientOptions {
o.MessageChannelDepth = s
return o
}
// SetHTTPHeaders sets the additional HTTP headers that will be sent in the WebSocket
// opening handshake.
func (o *ClientOptions) SetHTTPHeaders(h http.Header) *ClientOptions {
o.HTTPHeaders = h
return o
}

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vendor/github.com/eclipse/paho.mqtt.golang/options_reader.go generated vendored Normal file
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/*
* Copyright (c) 2013 IBM Corp.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Seth Hoenig
* Allan Stockdill-Mander
* Mike Robertson
*/
package mqtt
import (
"crypto/tls"
"net/http"
"net/url"
"time"
)
// ClientOptionsReader provides an interface for reading ClientOptions after the client has been initialized.
type ClientOptionsReader struct {
options *ClientOptions
}
//Servers returns a slice of the servers defined in the clientoptions
func (r *ClientOptionsReader) Servers() []*url.URL {
s := make([]*url.URL, len(r.options.Servers))
for i, u := range r.options.Servers {
nu := *u
s[i] = &nu
}
return s
}
//ResumeSubs returns true if resuming stored (un)sub is enabled
func (r *ClientOptionsReader) ResumeSubs() bool {
s := r.options.ResumeSubs
return s
}
//ClientID returns the set client id
func (r *ClientOptionsReader) ClientID() string {
s := r.options.ClientID
return s
}
//Username returns the set username
func (r *ClientOptionsReader) Username() string {
s := r.options.Username
return s
}
//Password returns the set password
func (r *ClientOptionsReader) Password() string {
s := r.options.Password
return s
}
//CleanSession returns whether Cleansession is set
func (r *ClientOptionsReader) CleanSession() bool {
s := r.options.CleanSession
return s
}
func (r *ClientOptionsReader) Order() bool {
s := r.options.Order
return s
}
func (r *ClientOptionsReader) WillEnabled() bool {
s := r.options.WillEnabled
return s
}
func (r *ClientOptionsReader) WillTopic() string {
s := r.options.WillTopic
return s
}
func (r *ClientOptionsReader) WillPayload() []byte {
s := r.options.WillPayload
return s
}
func (r *ClientOptionsReader) WillQos() byte {
s := r.options.WillQos
return s
}
func (r *ClientOptionsReader) WillRetained() bool {
s := r.options.WillRetained
return s
}
func (r *ClientOptionsReader) ProtocolVersion() uint {
s := r.options.ProtocolVersion
return s
}
func (r *ClientOptionsReader) TLSConfig() *tls.Config {
s := r.options.TLSConfig
return s
}
func (r *ClientOptionsReader) KeepAlive() time.Duration {
s := time.Duration(r.options.KeepAlive * int64(time.Second))
return s
}
func (r *ClientOptionsReader) PingTimeout() time.Duration {
s := r.options.PingTimeout
return s
}
func (r *ClientOptionsReader) ConnectTimeout() time.Duration {
s := r.options.ConnectTimeout
return s
}
func (r *ClientOptionsReader) MaxReconnectInterval() time.Duration {
s := r.options.MaxReconnectInterval
return s
}
func (r *ClientOptionsReader) AutoReconnect() bool {
s := r.options.AutoReconnect
return s
}
func (r *ClientOptionsReader) WriteTimeout() time.Duration {
s := r.options.WriteTimeout
return s
}
func (r *ClientOptionsReader) MessageChannelDepth() uint {
s := r.options.MessageChannelDepth
return s
}
func (r *ClientOptionsReader) HTTPHeaders() http.Header {
h := r.options.HTTPHeaders
return h
}

55
vendor/github.com/eclipse/paho.mqtt.golang/packets/connack.go generated vendored Normal file
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package packets
import (
"bytes"
"fmt"
"io"
)
//ConnackPacket is an internal representation of the fields of the
//Connack MQTT packet
type ConnackPacket struct {
FixedHeader
SessionPresent bool
ReturnCode byte
}
func (ca *ConnackPacket) String() string {
str := fmt.Sprintf("%s", ca.FixedHeader)
str += " "
str += fmt.Sprintf("sessionpresent: %t returncode: %d", ca.SessionPresent, ca.ReturnCode)
return str
}
func (ca *ConnackPacket) Write(w io.Writer) error {
var body bytes.Buffer
var err error
body.WriteByte(boolToByte(ca.SessionPresent))
body.WriteByte(ca.ReturnCode)
ca.FixedHeader.RemainingLength = 2
packet := ca.FixedHeader.pack()
packet.Write(body.Bytes())
_, err = packet.WriteTo(w)
return err
}
//Unpack decodes the details of a ControlPacket after the fixed
//header has been read
func (ca *ConnackPacket) Unpack(b io.Reader) error {
flags, err := decodeByte(b)
if err != nil {
return err
}
ca.SessionPresent = 1&flags > 0
ca.ReturnCode, err = decodeByte(b)
return err
}
//Details returns a Details struct containing the Qos and
//MessageID of this ControlPacket
func (ca *ConnackPacket) Details() Details {
return Details{Qos: 0, MessageID: 0}
}

154
vendor/github.com/eclipse/paho.mqtt.golang/packets/connect.go generated vendored Normal file
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package packets
import (
"bytes"
"fmt"
"io"
)
//ConnectPacket is an internal representation of the fields of the
//Connect MQTT packet
type ConnectPacket struct {
FixedHeader
ProtocolName string
ProtocolVersion byte
CleanSession bool
WillFlag bool
WillQos byte
WillRetain bool
UsernameFlag bool
PasswordFlag bool
ReservedBit byte
Keepalive uint16
ClientIdentifier string
WillTopic string
WillMessage []byte
Username string
Password []byte
}
func (c *ConnectPacket) String() string {
str := fmt.Sprintf("%s", c.FixedHeader)
str += " "
str += fmt.Sprintf("protocolversion: %d protocolname: %s cleansession: %t willflag: %t WillQos: %d WillRetain: %t Usernameflag: %t Passwordflag: %t keepalive: %d clientId: %s willtopic: %s willmessage: %s Username: %s Password: %s", c.ProtocolVersion, c.ProtocolName, c.CleanSession, c.WillFlag, c.WillQos, c.WillRetain, c.UsernameFlag, c.PasswordFlag, c.Keepalive, c.ClientIdentifier, c.WillTopic, c.WillMessage, c.Username, c.Password)
return str
}
func (c *ConnectPacket) Write(w io.Writer) error {
var body bytes.Buffer
var err error
body.Write(encodeString(c.ProtocolName))
body.WriteByte(c.ProtocolVersion)
body.WriteByte(boolToByte(c.CleanSession)<<1 | boolToByte(c.WillFlag)<<2 | c.WillQos<<3 | boolToByte(c.WillRetain)<<5 | boolToByte(c.PasswordFlag)<<6 | boolToByte(c.UsernameFlag)<<7)
body.Write(encodeUint16(c.Keepalive))
body.Write(encodeString(c.ClientIdentifier))
if c.WillFlag {
body.Write(encodeString(c.WillTopic))
body.Write(encodeBytes(c.WillMessage))
}
if c.UsernameFlag {
body.Write(encodeString(c.Username))
}
if c.PasswordFlag {
body.Write(encodeBytes(c.Password))
}
c.FixedHeader.RemainingLength = body.Len()
packet := c.FixedHeader.pack()
packet.Write(body.Bytes())
_, err = packet.WriteTo(w)
return err
}
//Unpack decodes the details of a ControlPacket after the fixed
//header has been read
func (c *ConnectPacket) Unpack(b io.Reader) error {
var err error
c.ProtocolName, err = decodeString(b)
if err != nil {
return err
}
c.ProtocolVersion, err = decodeByte(b)
if err != nil {
return err
}
options, err := decodeByte(b)
if err != nil {
return err
}
c.ReservedBit = 1 & options
c.CleanSession = 1&(options>>1) > 0
c.WillFlag = 1&(options>>2) > 0
c.WillQos = 3 & (options >> 3)
c.WillRetain = 1&(options>>5) > 0
c.PasswordFlag = 1&(options>>6) > 0
c.UsernameFlag = 1&(options>>7) > 0
c.Keepalive, err = decodeUint16(b)
if err != nil {
return err
}
c.ClientIdentifier, err = decodeString(b)
if err != nil {
return err
}
if c.WillFlag {
c.WillTopic, err = decodeString(b)
if err != nil {
return err
}
c.WillMessage, err = decodeBytes(b)
if err != nil {
return err
}
}
if c.UsernameFlag {
c.Username, err = decodeString(b)
if err != nil {
return err
}
}
if c.PasswordFlag {
c.Password, err = decodeBytes(b)
if err != nil {
return err
}
}
return nil
}
//Validate performs validation of the fields of a Connect packet
func (c *ConnectPacket) Validate() byte {
if c.PasswordFlag && !c.UsernameFlag {
return ErrRefusedBadUsernameOrPassword
}
if c.ReservedBit != 0 {
//Bad reserved bit
return ErrProtocolViolation
}
if (c.ProtocolName == "MQIsdp" && c.ProtocolVersion != 3) || (c.ProtocolName == "MQTT" && c.ProtocolVersion != 4) {
//Mismatched or unsupported protocol version
return ErrRefusedBadProtocolVersion
}
if c.ProtocolName != "MQIsdp" && c.ProtocolName != "MQTT" {
//Bad protocol name
return ErrProtocolViolation
}
if len(c.ClientIdentifier) > 65535 || len(c.Username) > 65535 || len(c.Password) > 65535 {
//Bad size field
return ErrProtocolViolation
}
if len(c.ClientIdentifier) == 0 && !c.CleanSession {
//Bad client identifier
return ErrRefusedIDRejected
}
return Accepted
}
//Details returns a Details struct containing the Qos and
//MessageID of this ControlPacket
func (c *ConnectPacket) Details() Details {
return Details{Qos: 0, MessageID: 0}
}

36
vendor/github.com/eclipse/paho.mqtt.golang/packets/disconnect.go generated vendored Normal file
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package packets
import (
"fmt"
"io"
)
//DisconnectPacket is an internal representation of the fields of the
//Disconnect MQTT packet
type DisconnectPacket struct {
FixedHeader
}
func (d *DisconnectPacket) String() string {
str := fmt.Sprintf("%s", d.FixedHeader)
return str
}
func (d *DisconnectPacket) Write(w io.Writer) error {
packet := d.FixedHeader.pack()
_, err := packet.WriteTo(w)
return err
}
//Unpack decodes the details of a ControlPacket after the fixed
//header has been read
func (d *DisconnectPacket) Unpack(b io.Reader) error {
return nil
}
//Details returns a Details struct containing the Qos and
//MessageID of this ControlPacket
func (d *DisconnectPacket) Details() Details {
return Details{Qos: 0, MessageID: 0}
}

346
vendor/github.com/eclipse/paho.mqtt.golang/packets/packets.go generated vendored Normal file
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package packets
import (
"bytes"
"encoding/binary"
"errors"
"fmt"
"io"
)
//ControlPacket defines the interface for structs intended to hold
//decoded MQTT packets, either from being read or before being
//written
type ControlPacket interface {
Write(io.Writer) error
Unpack(io.Reader) error
String() string
Details() Details
}
//PacketNames maps the constants for each of the MQTT packet types
//to a string representation of their name.
var PacketNames = map[uint8]string{
1: "CONNECT",
2: "CONNACK",
3: "PUBLISH",
4: "PUBACK",
5: "PUBREC",
6: "PUBREL",
7: "PUBCOMP",
8: "SUBSCRIBE",
9: "SUBACK",
10: "UNSUBSCRIBE",
11: "UNSUBACK",
12: "PINGREQ",
13: "PINGRESP",
14: "DISCONNECT",
}
//Below are the constants assigned to each of the MQTT packet types
const (
Connect = 1
Connack = 2
Publish = 3
Puback = 4
Pubrec = 5
Pubrel = 6
Pubcomp = 7
Subscribe = 8
Suback = 9
Unsubscribe = 10
Unsuback = 11
Pingreq = 12
Pingresp = 13
Disconnect = 14
)
//Below are the const definitions for error codes returned by
//Connect()
const (
Accepted = 0x00
ErrRefusedBadProtocolVersion = 0x01
ErrRefusedIDRejected = 0x02
ErrRefusedServerUnavailable = 0x03
ErrRefusedBadUsernameOrPassword = 0x04
ErrRefusedNotAuthorised = 0x05
ErrNetworkError = 0xFE
ErrProtocolViolation = 0xFF
)
//ConnackReturnCodes is a map of the error codes constants for Connect()
//to a string representation of the error
var ConnackReturnCodes = map[uint8]string{
0: "Connection Accepted",
1: "Connection Refused: Bad Protocol Version",
2: "Connection Refused: Client Identifier Rejected",
3: "Connection Refused: Server Unavailable",
4: "Connection Refused: Username or Password in unknown format",
5: "Connection Refused: Not Authorised",
254: "Connection Error",
255: "Connection Refused: Protocol Violation",
}
//ConnErrors is a map of the errors codes constants for Connect()
//to a Go error
var ConnErrors = map[byte]error{
Accepted: nil,
ErrRefusedBadProtocolVersion: errors.New("Unnacceptable protocol version"),
ErrRefusedIDRejected: errors.New("Identifier rejected"),
ErrRefusedServerUnavailable: errors.New("Server Unavailable"),
ErrRefusedBadUsernameOrPassword: errors.New("Bad user name or password"),
ErrRefusedNotAuthorised: errors.New("Not Authorized"),
ErrNetworkError: errors.New("Network Error"),
ErrProtocolViolation: errors.New("Protocol Violation"),
}
//ReadPacket takes an instance of an io.Reader (such as net.Conn) and attempts
//to read an MQTT packet from the stream. It returns a ControlPacket
//representing the decoded MQTT packet and an error. One of these returns will
//always be nil, a nil ControlPacket indicating an error occurred.
func ReadPacket(r io.Reader) (ControlPacket, error) {
var fh FixedHeader
b := make([]byte, 1)
_, err := io.ReadFull(r, b)
if err != nil {
return nil, err
}
err = fh.unpack(b[0], r)
if err != nil {
return nil, err
}
cp, err := NewControlPacketWithHeader(fh)
if err != nil {
return nil, err
}
packetBytes := make([]byte, fh.RemainingLength)
n, err := io.ReadFull(r, packetBytes)
if err != nil {
return nil, err
}
if n != fh.RemainingLength {
return nil, errors.New("Failed to read expected data")
}
err = cp.Unpack(bytes.NewBuffer(packetBytes))
return cp, err
}
//NewControlPacket is used to create a new ControlPacket of the type specified
//by packetType, this is usually done by reference to the packet type constants
//defined in packets.go. The newly created ControlPacket is empty and a pointer
//is returned.
func NewControlPacket(packetType byte) ControlPacket {
switch packetType {
case Connect:
return &ConnectPacket{FixedHeader: FixedHeader{MessageType: Connect}}
case Connack:
return &ConnackPacket{FixedHeader: FixedHeader{MessageType: Connack}}
case Disconnect:
return &DisconnectPacket{FixedHeader: FixedHeader{MessageType: Disconnect}}
case Publish:
return &PublishPacket{FixedHeader: FixedHeader{MessageType: Publish}}
case Puback:
return &PubackPacket{FixedHeader: FixedHeader{MessageType: Puback}}
case Pubrec:
return &PubrecPacket{FixedHeader: FixedHeader{MessageType: Pubrec}}
case Pubrel:
return &PubrelPacket{FixedHeader: FixedHeader{MessageType: Pubrel, Qos: 1}}
case Pubcomp:
return &PubcompPacket{FixedHeader: FixedHeader{MessageType: Pubcomp}}
case Subscribe:
return &SubscribePacket{FixedHeader: FixedHeader{MessageType: Subscribe, Qos: 1}}
case Suback:
return &SubackPacket{FixedHeader: FixedHeader{MessageType: Suback}}
case Unsubscribe:
return &UnsubscribePacket{FixedHeader: FixedHeader{MessageType: Unsubscribe, Qos: 1}}
case Unsuback:
return &UnsubackPacket{FixedHeader: FixedHeader{MessageType: Unsuback}}
case Pingreq:
return &PingreqPacket{FixedHeader: FixedHeader{MessageType: Pingreq}}
case Pingresp:
return &PingrespPacket{FixedHeader: FixedHeader{MessageType: Pingresp}}
}
return nil
}
//NewControlPacketWithHeader is used to create a new ControlPacket of the type
//specified within the FixedHeader that is passed to the function.
//The newly created ControlPacket is empty and a pointer is returned.
func NewControlPacketWithHeader(fh FixedHeader) (ControlPacket, error) {
switch fh.MessageType {
case Connect:
return &ConnectPacket{FixedHeader: fh}, nil
case Connack:
return &ConnackPacket{FixedHeader: fh}, nil
case Disconnect:
return &DisconnectPacket{FixedHeader: fh}, nil
case Publish:
return &PublishPacket{FixedHeader: fh}, nil
case Puback:
return &PubackPacket{FixedHeader: fh}, nil
case Pubrec:
return &PubrecPacket{FixedHeader: fh}, nil
case Pubrel:
return &PubrelPacket{FixedHeader: fh}, nil
case Pubcomp:
return &PubcompPacket{FixedHeader: fh}, nil
case Subscribe:
return &SubscribePacket{FixedHeader: fh}, nil
case Suback:
return &SubackPacket{FixedHeader: fh}, nil
case Unsubscribe:
return &UnsubscribePacket{FixedHeader: fh}, nil
case Unsuback:
return &UnsubackPacket{FixedHeader: fh}, nil
case Pingreq:
return &PingreqPacket{FixedHeader: fh}, nil
case Pingresp:
return &PingrespPacket{FixedHeader: fh}, nil
}
return nil, fmt.Errorf("unsupported packet type 0x%x", fh.MessageType)
}
//Details struct returned by the Details() function called on
//ControlPackets to present details of the Qos and MessageID
//of the ControlPacket
type Details struct {
Qos byte
MessageID uint16
}
//FixedHeader is a struct to hold the decoded information from
//the fixed header of an MQTT ControlPacket
type FixedHeader struct {
MessageType byte
Dup bool
Qos byte
Retain bool
RemainingLength int
}
func (fh FixedHeader) String() string {
return fmt.Sprintf("%s: dup: %t qos: %d retain: %t rLength: %d", PacketNames[fh.MessageType], fh.Dup, fh.Qos, fh.Retain, fh.RemainingLength)
}
func boolToByte(b bool) byte {
switch b {
case true:
return 1
default:
return 0
}
}
func (fh *FixedHeader) pack() bytes.Buffer {
var header bytes.Buffer
header.WriteByte(fh.MessageType<<4 | boolToByte(fh.Dup)<<3 | fh.Qos<<1 | boolToByte(fh.Retain))
header.Write(encodeLength(fh.RemainingLength))
return header
}
func (fh *FixedHeader) unpack(typeAndFlags byte, r io.Reader) error {
fh.MessageType = typeAndFlags >> 4
fh.Dup = (typeAndFlags>>3)&0x01 > 0
fh.Qos = (typeAndFlags >> 1) & 0x03
fh.Retain = typeAndFlags&0x01 > 0
var err error
fh.RemainingLength, err = decodeLength(r)
return err
}
func decodeByte(b io.Reader) (byte, error) {
num := make([]byte, 1)
_, err := b.Read(num)
if err != nil {
return 0, err
}
return num[0], nil
}
func decodeUint16(b io.Reader) (uint16, error) {
num := make([]byte, 2)
_, err := b.Read(num)
if err != nil {
return 0, err
}
return binary.BigEndian.Uint16(num), nil
}
func encodeUint16(num uint16) []byte {
bytes := make([]byte, 2)
binary.BigEndian.PutUint16(bytes, num)
return bytes
}
func encodeString(field string) []byte {
return encodeBytes([]byte(field))
}
func decodeString(b io.Reader) (string, error) {
buf, err := decodeBytes(b)
return string(buf), err
}
func decodeBytes(b io.Reader) ([]byte, error) {
fieldLength, err := decodeUint16(b)
if err != nil {
return nil, err
}
field := make([]byte, fieldLength)
_, err = b.Read(field)
if err != nil {
return nil, err
}
return field, nil
}
func encodeBytes(field []byte) []byte {
fieldLength := make([]byte, 2)
binary.BigEndian.PutUint16(fieldLength, uint16(len(field)))
return append(fieldLength, field...)
}
func encodeLength(length int) []byte {
var encLength []byte
for {
digit := byte(length % 128)
length /= 128
if length > 0 {
digit |= 0x80
}
encLength = append(encLength, digit)
if length == 0 {
break
}
}
return encLength
}
func decodeLength(r io.Reader) (int, error) {
var rLength uint32
var multiplier uint32
b := make([]byte, 1)
for multiplier < 27 { //fix: Infinite '(digit & 128) == 1' will cause the dead loop
_, err := io.ReadFull(r, b)
if err != nil {
return 0, err
}
digit := b[0]
rLength |= uint32(digit&127) << multiplier
if (digit & 128) == 0 {
break
}
multiplier += 7
}
return int(rLength), nil
}

36
vendor/github.com/eclipse/paho.mqtt.golang/packets/pingreq.go generated vendored Normal file
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package packets
import (
"fmt"
"io"
)
//PingreqPacket is an internal representation of the fields of the
//Pingreq MQTT packet
type PingreqPacket struct {
FixedHeader
}
func (pr *PingreqPacket) String() string {
str := fmt.Sprintf("%s", pr.FixedHeader)
return str
}
func (pr *PingreqPacket) Write(w io.Writer) error {
packet := pr.FixedHeader.pack()
_, err := packet.WriteTo(w)
return err
}
//Unpack decodes the details of a ControlPacket after the fixed
//header has been read
func (pr *PingreqPacket) Unpack(b io.Reader) error {
return nil
}
//Details returns a Details struct containing the Qos and
//MessageID of this ControlPacket
func (pr *PingreqPacket) Details() Details {
return Details{Qos: 0, MessageID: 0}
}

36
vendor/github.com/eclipse/paho.mqtt.golang/packets/pingresp.go generated vendored Normal file
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package packets
import (
"fmt"
"io"
)
//PingrespPacket is an internal representation of the fields of the
//Pingresp MQTT packet
type PingrespPacket struct {
FixedHeader
}
func (pr *PingrespPacket) String() string {
str := fmt.Sprintf("%s", pr.FixedHeader)
return str
}
func (pr *PingrespPacket) Write(w io.Writer) error {
packet := pr.FixedHeader.pack()
_, err := packet.WriteTo(w)
return err
}
//Unpack decodes the details of a ControlPacket after the fixed
//header has been read
func (pr *PingrespPacket) Unpack(b io.Reader) error {
return nil
}
//Details returns a Details struct containing the Qos and
//MessageID of this ControlPacket
func (pr *PingrespPacket) Details() Details {
return Details{Qos: 0, MessageID: 0}
}

45
vendor/github.com/eclipse/paho.mqtt.golang/packets/puback.go generated vendored Normal file
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package packets
import (
"fmt"
"io"
)
//PubackPacket is an internal representation of the fields of the
//Puback MQTT packet
type PubackPacket struct {
FixedHeader
MessageID uint16
}
func (pa *PubackPacket) String() string {
str := fmt.Sprintf("%s", pa.FixedHeader)
str += " "
str += fmt.Sprintf("MessageID: %d", pa.MessageID)
return str
}
func (pa *PubackPacket) Write(w io.Writer) error {
var err error
pa.FixedHeader.RemainingLength = 2
packet := pa.FixedHeader.pack()
packet.Write(encodeUint16(pa.MessageID))
_, err = packet.WriteTo(w)
return err
}
//Unpack decodes the details of a ControlPacket after the fixed
//header has been read
func (pa *PubackPacket) Unpack(b io.Reader) error {
var err error
pa.MessageID, err = decodeUint16(b)
return err
}
//Details returns a Details struct containing the Qos and
//MessageID of this ControlPacket
func (pa *PubackPacket) Details() Details {
return Details{Qos: pa.Qos, MessageID: pa.MessageID}
}

45
vendor/github.com/eclipse/paho.mqtt.golang/packets/pubcomp.go generated vendored Normal file
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package packets
import (
"fmt"
"io"
)
//PubcompPacket is an internal representation of the fields of the
//Pubcomp MQTT packet
type PubcompPacket struct {
FixedHeader
MessageID uint16
}
func (pc *PubcompPacket) String() string {
str := fmt.Sprintf("%s", pc.FixedHeader)
str += " "
str += fmt.Sprintf("MessageID: %d", pc.MessageID)
return str
}
func (pc *PubcompPacket) Write(w io.Writer) error {
var err error
pc.FixedHeader.RemainingLength = 2
packet := pc.FixedHeader.pack()
packet.Write(encodeUint16(pc.MessageID))
_, err = packet.WriteTo(w)
return err
}
//Unpack decodes the details of a ControlPacket after the fixed
//header has been read
func (pc *PubcompPacket) Unpack(b io.Reader) error {
var err error
pc.MessageID, err = decodeUint16(b)
return err
}
//Details returns a Details struct containing the Qos and
//MessageID of this ControlPacket
func (pc *PubcompPacket) Details() Details {
return Details{Qos: pc.Qos, MessageID: pc.MessageID}
}

88
vendor/github.com/eclipse/paho.mqtt.golang/packets/publish.go generated vendored Normal file
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package packets
import (
"bytes"
"fmt"
"io"
)
//PublishPacket is an internal representation of the fields of the
//Publish MQTT packet
type PublishPacket struct {
FixedHeader
TopicName string
MessageID uint16
Payload []byte
}
func (p *PublishPacket) String() string {
str := fmt.Sprintf("%s", p.FixedHeader)
str += " "
str += fmt.Sprintf("topicName: %s MessageID: %d", p.TopicName, p.MessageID)
str += " "
str += fmt.Sprintf("payload: %s", string(p.Payload))
return str
}
func (p *PublishPacket) Write(w io.Writer) error {
var body bytes.Buffer
var err error
body.Write(encodeString(p.TopicName))
if p.Qos > 0 {
body.Write(encodeUint16(p.MessageID))
}
p.FixedHeader.RemainingLength = body.Len() + len(p.Payload)
packet := p.FixedHeader.pack()
packet.Write(body.Bytes())
packet.Write(p.Payload)
_, err = w.Write(packet.Bytes())
return err
}
//Unpack decodes the details of a ControlPacket after the fixed
//header has been read
func (p *PublishPacket) Unpack(b io.Reader) error {
var payloadLength = p.FixedHeader.RemainingLength
var err error
p.TopicName, err = decodeString(b)
if err != nil {
return err
}
if p.Qos > 0 {
p.MessageID, err = decodeUint16(b)
if err != nil {
return err
}
payloadLength -= len(p.TopicName) + 4
} else {
payloadLength -= len(p.TopicName) + 2
}
if payloadLength < 0 {
return fmt.Errorf("Error unpacking publish, payload length < 0")
}
p.Payload = make([]byte, payloadLength)
_, err = b.Read(p.Payload)
return err
}
//Copy creates a new PublishPacket with the same topic and payload
//but an empty fixed header, useful for when you want to deliver
//a message with different properties such as Qos but the same
//content
func (p *PublishPacket) Copy() *PublishPacket {
newP := NewControlPacket(Publish).(*PublishPacket)
newP.TopicName = p.TopicName
newP.Payload = p.Payload
return newP
}
//Details returns a Details struct containing the Qos and
//MessageID of this ControlPacket
func (p *PublishPacket) Details() Details {
return Details{Qos: p.Qos, MessageID: p.MessageID}
}

45
vendor/github.com/eclipse/paho.mqtt.golang/packets/pubrec.go generated vendored Normal file
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package packets
import (
"fmt"
"io"
)
//PubrecPacket is an internal representation of the fields of the
//Pubrec MQTT packet
type PubrecPacket struct {
FixedHeader
MessageID uint16
}
func (pr *PubrecPacket) String() string {
str := fmt.Sprintf("%s", pr.FixedHeader)
str += " "
str += fmt.Sprintf("MessageID: %d", pr.MessageID)
return str
}
func (pr *PubrecPacket) Write(w io.Writer) error {
var err error
pr.FixedHeader.RemainingLength = 2
packet := pr.FixedHeader.pack()
packet.Write(encodeUint16(pr.MessageID))
_, err = packet.WriteTo(w)
return err
}
//Unpack decodes the details of a ControlPacket after the fixed
//header has been read
func (pr *PubrecPacket) Unpack(b io.Reader) error {
var err error
pr.MessageID, err = decodeUint16(b)
return err
}
//Details returns a Details struct containing the Qos and
//MessageID of this ControlPacket
func (pr *PubrecPacket) Details() Details {
return Details{Qos: pr.Qos, MessageID: pr.MessageID}
}

45
vendor/github.com/eclipse/paho.mqtt.golang/packets/pubrel.go generated vendored Normal file
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package packets
import (
"fmt"
"io"
)
//PubrelPacket is an internal representation of the fields of the
//Pubrel MQTT packet
type PubrelPacket struct {
FixedHeader
MessageID uint16
}
func (pr *PubrelPacket) String() string {
str := fmt.Sprintf("%s", pr.FixedHeader)
str += " "
str += fmt.Sprintf("MessageID: %d", pr.MessageID)
return str
}
func (pr *PubrelPacket) Write(w io.Writer) error {
var err error
pr.FixedHeader.RemainingLength = 2
packet := pr.FixedHeader.pack()
packet.Write(encodeUint16(pr.MessageID))
_, err = packet.WriteTo(w)
return err
}
//Unpack decodes the details of a ControlPacket after the fixed
//header has been read
func (pr *PubrelPacket) Unpack(b io.Reader) error {
var err error
pr.MessageID, err = decodeUint16(b)
return err
}
//Details returns a Details struct containing the Qos and
//MessageID of this ControlPacket
func (pr *PubrelPacket) Details() Details {
return Details{Qos: pr.Qos, MessageID: pr.MessageID}
}

60
vendor/github.com/eclipse/paho.mqtt.golang/packets/suback.go generated vendored Normal file
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package packets
import (
"bytes"
"fmt"
"io"
)
//SubackPacket is an internal representation of the fields of the
//Suback MQTT packet
type SubackPacket struct {
FixedHeader
MessageID uint16
ReturnCodes []byte
}
func (sa *SubackPacket) String() string {
str := fmt.Sprintf("%s", sa.FixedHeader)
str += " "
str += fmt.Sprintf("MessageID: %d", sa.MessageID)
return str
}
func (sa *SubackPacket) Write(w io.Writer) error {
var body bytes.Buffer
var err error
body.Write(encodeUint16(sa.MessageID))
body.Write(sa.ReturnCodes)
sa.FixedHeader.RemainingLength = body.Len()
packet := sa.FixedHeader.pack()
packet.Write(body.Bytes())
_, err = packet.WriteTo(w)
return err
}
//Unpack decodes the details of a ControlPacket after the fixed
//header has been read
func (sa *SubackPacket) Unpack(b io.Reader) error {
var qosBuffer bytes.Buffer
var err error
sa.MessageID, err = decodeUint16(b)
if err != nil {
return err
}
_, err = qosBuffer.ReadFrom(b)
if err != nil {
return err
}
sa.ReturnCodes = qosBuffer.Bytes()
return nil
}
//Details returns a Details struct containing the Qos and
//MessageID of this ControlPacket
func (sa *SubackPacket) Details() Details {
return Details{Qos: 0, MessageID: sa.MessageID}
}

72
vendor/github.com/eclipse/paho.mqtt.golang/packets/subscribe.go generated vendored Normal file
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package packets
import (
"bytes"
"fmt"
"io"
)
//SubscribePacket is an internal representation of the fields of the
//Subscribe MQTT packet
type SubscribePacket struct {
FixedHeader
MessageID uint16
Topics []string
Qoss []byte
}
func (s *SubscribePacket) String() string {
str := fmt.Sprintf("%s", s.FixedHeader)
str += " "
str += fmt.Sprintf("MessageID: %d topics: %s", s.MessageID, s.Topics)
return str
}
func (s *SubscribePacket) Write(w io.Writer) error {
var body bytes.Buffer
var err error
body.Write(encodeUint16(s.MessageID))
for i, topic := range s.Topics {
body.Write(encodeString(topic))
body.WriteByte(s.Qoss[i])
}
s.FixedHeader.RemainingLength = body.Len()
packet := s.FixedHeader.pack()
packet.Write(body.Bytes())
_, err = packet.WriteTo(w)
return err
}
//Unpack decodes the details of a ControlPacket after the fixed
//header has been read
func (s *SubscribePacket) Unpack(b io.Reader) error {
var err error
s.MessageID, err = decodeUint16(b)
if err != nil {
return err
}
payloadLength := s.FixedHeader.RemainingLength - 2
for payloadLength > 0 {
topic, err := decodeString(b)
if err != nil {
return err
}
s.Topics = append(s.Topics, topic)
qos, err := decodeByte(b)
if err != nil {
return err
}
s.Qoss = append(s.Qoss, qos)
payloadLength -= 2 + len(topic) + 1 //2 bytes of string length, plus string, plus 1 byte for Qos
}
return nil
}
//Details returns a Details struct containing the Qos and
//MessageID of this ControlPacket
func (s *SubscribePacket) Details() Details {
return Details{Qos: 1, MessageID: s.MessageID}
}

45
vendor/github.com/eclipse/paho.mqtt.golang/packets/unsuback.go generated vendored Normal file
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package packets
import (
"fmt"
"io"
)
//UnsubackPacket is an internal representation of the fields of the
//Unsuback MQTT packet
type UnsubackPacket struct {
FixedHeader
MessageID uint16
}
func (ua *UnsubackPacket) String() string {
str := fmt.Sprintf("%s", ua.FixedHeader)
str += " "
str += fmt.Sprintf("MessageID: %d", ua.MessageID)
return str
}
func (ua *UnsubackPacket) Write(w io.Writer) error {
var err error
ua.FixedHeader.RemainingLength = 2
packet := ua.FixedHeader.pack()
packet.Write(encodeUint16(ua.MessageID))
_, err = packet.WriteTo(w)
return err
}
//Unpack decodes the details of a ControlPacket after the fixed
//header has been read
func (ua *UnsubackPacket) Unpack(b io.Reader) error {
var err error
ua.MessageID, err = decodeUint16(b)
return err
}
//Details returns a Details struct containing the Qos and
//MessageID of this ControlPacket
func (ua *UnsubackPacket) Details() Details {
return Details{Qos: 0, MessageID: ua.MessageID}
}

59
vendor/github.com/eclipse/paho.mqtt.golang/packets/unsubscribe.go generated vendored Normal file
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package packets
import (
"bytes"
"fmt"
"io"
)
//UnsubscribePacket is an internal representation of the fields of the
//Unsubscribe MQTT packet
type UnsubscribePacket struct {
FixedHeader
MessageID uint16
Topics []string
}
func (u *UnsubscribePacket) String() string {
str := fmt.Sprintf("%s", u.FixedHeader)
str += " "
str += fmt.Sprintf("MessageID: %d", u.MessageID)
return str
}
func (u *UnsubscribePacket) Write(w io.Writer) error {
var body bytes.Buffer
var err error
body.Write(encodeUint16(u.MessageID))
for _, topic := range u.Topics {
body.Write(encodeString(topic))
}
u.FixedHeader.RemainingLength = body.Len()
packet := u.FixedHeader.pack()
packet.Write(body.Bytes())
_, err = packet.WriteTo(w)
return err
}
//Unpack decodes the details of a ControlPacket after the fixed
//header has been read
func (u *UnsubscribePacket) Unpack(b io.Reader) error {
var err error
u.MessageID, err = decodeUint16(b)
if err != nil {
return err
}
for topic, err := decodeString(b); err == nil && topic != ""; topic, err = decodeString(b) {
u.Topics = append(u.Topics, topic)
}
return err
}
//Details returns a Details struct containing the Qos and
//MessageID of this ControlPacket
func (u *UnsubscribePacket) Details() Details {
return Details{Qos: 1, MessageID: u.MessageID}
}

69
vendor/github.com/eclipse/paho.mqtt.golang/ping.go generated vendored Normal file
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/*
* Copyright (c) 2013 IBM Corp.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Seth Hoenig
* Allan Stockdill-Mander
* Mike Robertson
*/
package mqtt
import (
"errors"
"sync/atomic"
"time"
"github.com/eclipse/paho.mqtt.golang/packets"
)
func keepalive(c *client) {
defer c.workers.Done()
DEBUG.Println(PNG, "keepalive starting")
var checkInterval int64
var pingSent time.Time
if c.options.KeepAlive > 10 {
checkInterval = 5
} else {
checkInterval = c.options.KeepAlive / 2
}
intervalTicker := time.NewTicker(time.Duration(checkInterval * int64(time.Second)))
defer intervalTicker.Stop()
for {
select {
case <-c.stop:
DEBUG.Println(PNG, "keepalive stopped")
return
case <-intervalTicker.C:
lastSent := c.lastSent.Load().(time.Time)
lastReceived := c.lastReceived.Load().(time.Time)
DEBUG.Println(PNG, "ping check", time.Since(lastSent).Seconds())
if time.Since(lastSent) >= time.Duration(c.options.KeepAlive*int64(time.Second)) || time.Since(lastReceived) >= time.Duration(c.options.KeepAlive*int64(time.Second)) {
if atomic.LoadInt32(&c.pingOutstanding) == 0 {
DEBUG.Println(PNG, "keepalive sending ping")
ping := packets.NewControlPacket(packets.Pingreq).(*packets.PingreqPacket)
//We don't want to wait behind large messages being sent, the Write call
//will block until it it able to send the packet.
atomic.StoreInt32(&c.pingOutstanding, 1)
ping.Write(c.conn)
c.lastSent.Store(time.Now())
pingSent = time.Now()
}
}
if atomic.LoadInt32(&c.pingOutstanding) > 0 && time.Now().Sub(pingSent) >= c.options.PingTimeout {
CRITICAL.Println(PNG, "pingresp not received, disconnecting")
c.errors <- errors.New("pingresp not received, disconnecting")
return
}
}
}
}

187
vendor/github.com/eclipse/paho.mqtt.golang/router.go generated vendored Normal file
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/*
* Copyright (c) 2013 IBM Corp.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Seth Hoenig
* Allan Stockdill-Mander
* Mike Robertson
*/
package mqtt
import (
"container/list"
"strings"
"sync"
"github.com/eclipse/paho.mqtt.golang/packets"
)
// route is a type which associates MQTT Topic strings with a
// callback to be executed upon the arrival of a message associated
// with a subscription to that topic.
type route struct {
topic string
callback MessageHandler
}
// match takes a slice of strings which represent the route being tested having been split on '/'
// separators, and a slice of strings representing the topic string in the published message, similarly
// split.
// The function determines if the topic string matches the route according to the MQTT topic rules
// and returns a boolean of the outcome
func match(route []string, topic []string) bool {
if len(route) == 0 {
if len(topic) == 0 {
return true
}
return false
}
if len(topic) == 0 {
if route[0] == "#" {
return true
}
return false
}
if route[0] == "#" {
return true
}
if (route[0] == "+") || (route[0] == topic[0]) {
return match(route[1:], topic[1:])
}
return false
}
func routeIncludesTopic(route, topic string) bool {
return match(routeSplit(route), strings.Split(topic, "/"))
}
// removes $share and sharename when splitting the route to allow
// shared subscription routes to correctly match the topic
func routeSplit(route string) []string {
var result []string
if strings.HasPrefix(route, "$share") {
result = strings.Split(route, "/")[2:]
} else {
result = strings.Split(route, "/")
}
return result
}
// match takes the topic string of the published message and does a basic compare to the
// string of the current Route, if they match it returns true
func (r *route) match(topic string) bool {
return r.topic == topic || routeIncludesTopic(r.topic, topic)
}
type router struct {
sync.RWMutex
routes *list.List
defaultHandler MessageHandler
messages chan *packets.PublishPacket
stop chan bool
}
// newRouter returns a new instance of a Router and channel which can be used to tell the Router
// to stop
func newRouter() (*router, chan bool) {
router := &router{routes: list.New(), messages: make(chan *packets.PublishPacket), stop: make(chan bool)}
stop := router.stop
return router, stop
}
// addRoute takes a topic string and MessageHandler callback. It looks in the current list of
// routes to see if there is already a matching Route. If there is it replaces the current
// callback with the new one. If not it add a new entry to the list of Routes.
func (r *router) addRoute(topic string, callback MessageHandler) {
r.Lock()
defer r.Unlock()
for e := r.routes.Front(); e != nil; e = e.Next() {
if e.Value.(*route).match(topic) {
r := e.Value.(*route)
r.callback = callback
return
}
}
r.routes.PushBack(&route{topic: topic, callback: callback})
}
// deleteRoute takes a route string, looks for a matching Route in the list of Routes. If
// found it removes the Route from the list.
func (r *router) deleteRoute(topic string) {
r.Lock()
defer r.Unlock()
for e := r.routes.Front(); e != nil; e = e.Next() {
if e.Value.(*route).match(topic) {
r.routes.Remove(e)
return
}
}
}
// setDefaultHandler assigns a default callback that will be called if no matching Route
// is found for an incoming Publish.
func (r *router) setDefaultHandler(handler MessageHandler) {
r.Lock()
defer r.Unlock()
r.defaultHandler = handler
}
// matchAndDispatch takes a channel of Message pointers as input and starts a go routine that
// takes messages off the channel, matches them against the internal route list and calls the
// associated callback (or the defaultHandler, if one exists and no other route matched). If
// anything is sent down the stop channel the function will end.
func (r *router) matchAndDispatch(messages <-chan *packets.PublishPacket, order bool, client *client) {
go func() {
for {
select {
case message := <-messages:
sent := false
r.RLock()
m := messageFromPublish(message, client.ackFunc(message))
handlers := []MessageHandler{}
for e := r.routes.Front(); e != nil; e = e.Next() {
if e.Value.(*route).match(message.TopicName) {
if order {
handlers = append(handlers, e.Value.(*route).callback)
} else {
hd := e.Value.(*route).callback
go func() {
hd(client, m)
m.Ack()
}()
}
sent = true
}
}
if !sent && r.defaultHandler != nil {
if order {
handlers = append(handlers, r.defaultHandler)
} else {
go func() {
r.defaultHandler(client, m)
m.Ack()
}()
}
}
r.RUnlock()
for _, handler := range handlers {
func() {
handler(client, m)
m.Ack()
}()
}
case <-r.stop:
return
}
}
}()
}

136
vendor/github.com/eclipse/paho.mqtt.golang/store.go generated vendored Normal file
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/*
* Copyright (c) 2013 IBM Corp.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Seth Hoenig
* Allan Stockdill-Mander
* Mike Robertson
*/
package mqtt
import (
"fmt"
"strconv"
"github.com/eclipse/paho.mqtt.golang/packets"
)
const (
inboundPrefix = "i."
outboundPrefix = "o."
)
// Store is an interface which can be used to provide implementations
// for message persistence.
// Because we may have to store distinct messages with the same
// message ID, we need a unique key for each message. This is
// possible by prepending "i." or "o." to each message id
type Store interface {
Open()
Put(key string, message packets.ControlPacket)
Get(key string) packets.ControlPacket
All() []string
Del(key string)
Close()
Reset()
}
// A key MUST have the form "X.[messageid]"
// where X is 'i' or 'o'
func mIDFromKey(key string) uint16 {
s := key[2:]
i, err := strconv.Atoi(s)
chkerr(err)
return uint16(i)
}
// Return true if key prefix is outbound
func isKeyOutbound(key string) bool {
return key[:2] == outboundPrefix
}
// Return true if key prefix is inbound
func isKeyInbound(key string) bool {
return key[:2] == inboundPrefix
}
// Return a string of the form "i.[id]"
func inboundKeyFromMID(id uint16) string {
return fmt.Sprintf("%s%d", inboundPrefix, id)
}
// Return a string of the form "o.[id]"
func outboundKeyFromMID(id uint16) string {
return fmt.Sprintf("%s%d", outboundPrefix, id)
}
// govern which outgoing messages are persisted
func persistOutbound(s Store, m packets.ControlPacket) {
switch m.Details().Qos {
case 0:
switch m.(type) {
case *packets.PubackPacket, *packets.PubcompPacket:
// Sending puback. delete matching publish
// from ibound
s.Del(inboundKeyFromMID(m.Details().MessageID))
}
case 1:
switch m.(type) {
case *packets.PublishPacket, *packets.PubrelPacket, *packets.SubscribePacket, *packets.UnsubscribePacket:
// Sending publish. store in obound
// until puback received
s.Put(outboundKeyFromMID(m.Details().MessageID), m)
default:
ERROR.Println(STR, "Asked to persist an invalid message type")
}
case 2:
switch m.(type) {
case *packets.PublishPacket:
// Sending publish. store in obound
// until pubrel received
s.Put(outboundKeyFromMID(m.Details().MessageID), m)
default:
ERROR.Println(STR, "Asked to persist an invalid message type")
}
}
}
// govern which incoming messages are persisted
func persistInbound(s Store, m packets.ControlPacket) {
switch m.Details().Qos {
case 0:
switch m.(type) {
case *packets.PubackPacket, *packets.SubackPacket, *packets.UnsubackPacket, *packets.PubcompPacket:
// Received a puback. delete matching publish
// from obound
s.Del(outboundKeyFromMID(m.Details().MessageID))
case *packets.PublishPacket, *packets.PubrecPacket, *packets.PingrespPacket, *packets.ConnackPacket:
default:
ERROR.Println(STR, "Asked to persist an invalid messages type")
}
case 1:
switch m.(type) {
case *packets.PublishPacket, *packets.PubrelPacket:
// Received a publish. store it in ibound
// until puback sent
s.Put(inboundKeyFromMID(m.Details().MessageID), m)
default:
ERROR.Println(STR, "Asked to persist an invalid messages type")
}
case 2:
switch m.(type) {
case *packets.PublishPacket:
// Received a publish. store it in ibound
// until pubrel received
s.Put(inboundKeyFromMID(m.Details().MessageID), m)
default:
ERROR.Println(STR, "Asked to persist an invalid messages type")
}
}
}

184
vendor/github.com/eclipse/paho.mqtt.golang/token.go generated vendored Normal file
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/*
* Copyright (c) 2014 IBM Corp.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Allan Stockdill-Mander
*/
package mqtt
import (
"sync"
"time"
"github.com/eclipse/paho.mqtt.golang/packets"
)
// PacketAndToken is a struct that contains both a ControlPacket and a
// Token. This struct is passed via channels between the client interface
// code and the underlying code responsible for sending and receiving
// MQTT messages.
type PacketAndToken struct {
p packets.ControlPacket
t tokenCompletor
}
// Token defines the interface for the tokens used to indicate when
// actions have completed.
type Token interface {
Wait() bool
WaitTimeout(time.Duration) bool
Error() error
}
type TokenErrorSetter interface {
setError(error)
}
type tokenCompletor interface {
Token
TokenErrorSetter
flowComplete()
}
type baseToken struct {
m sync.RWMutex
complete chan struct{}
err error
}
// Wait will wait indefinitely for the Token to complete, ie the Publish
// to be sent and confirmed receipt from the broker
func (b *baseToken) Wait() bool {
<-b.complete
return true
}
// WaitTimeout takes a time.Duration to wait for the flow associated with the
// Token to complete, returns true if it returned before the timeout or
// returns false if the timeout occurred. In the case of a timeout the Token
// does not have an error set in case the caller wishes to wait again
func (b *baseToken) WaitTimeout(d time.Duration) bool {
b.m.Lock()
defer b.m.Unlock()
timer := time.NewTimer(d)
select {
case <-b.complete:
if !timer.Stop() {
<-timer.C
}
return true
case <-timer.C:
}
return false
}
func (b *baseToken) flowComplete() {
select {
case <-b.complete:
default:
close(b.complete)
}
}
func (b *baseToken) Error() error {
b.m.RLock()
defer b.m.RUnlock()
return b.err
}
func (b *baseToken) setError(e error) {
b.m.Lock()
b.err = e
b.flowComplete()
b.m.Unlock()
}
func newToken(tType byte) tokenCompletor {
switch tType {
case packets.Connect:
return &ConnectToken{baseToken: baseToken{complete: make(chan struct{})}}
case packets.Subscribe:
return &SubscribeToken{baseToken: baseToken{complete: make(chan struct{})}, subResult: make(map[string]byte)}
case packets.Publish:
return &PublishToken{baseToken: baseToken{complete: make(chan struct{})}}
case packets.Unsubscribe:
return &UnsubscribeToken{baseToken: baseToken{complete: make(chan struct{})}}
case packets.Disconnect:
return &DisconnectToken{baseToken: baseToken{complete: make(chan struct{})}}
}
return nil
}
// ConnectToken is an extension of Token containing the extra fields
// required to provide information about calls to Connect()
type ConnectToken struct {
baseToken
returnCode byte
sessionPresent bool
}
// ReturnCode returns the acknowlegement code in the connack sent
// in response to a Connect()
func (c *ConnectToken) ReturnCode() byte {
c.m.RLock()
defer c.m.RUnlock()
return c.returnCode
}
// SessionPresent returns a bool representing the value of the
// session present field in the connack sent in response to a Connect()
func (c *ConnectToken) SessionPresent() bool {
c.m.RLock()
defer c.m.RUnlock()
return c.sessionPresent
}
// PublishToken is an extension of Token containing the extra fields
// required to provide information about calls to Publish()
type PublishToken struct {
baseToken
messageID uint16
}
// MessageID returns the MQTT message ID that was assigned to the
// Publish packet when it was sent to the broker
func (p *PublishToken) MessageID() uint16 {
return p.messageID
}
// SubscribeToken is an extension of Token containing the extra fields
// required to provide information about calls to Subscribe()
type SubscribeToken struct {
baseToken
subs []string
subResult map[string]byte
}
// Result returns a map of topics that were subscribed to along with
// the matching return code from the broker. This is either the Qos
// value of the subscription or an error code.
func (s *SubscribeToken) Result() map[string]byte {
s.m.RLock()
defer s.m.RUnlock()
return s.subResult
}
// UnsubscribeToken is an extension of Token containing the extra fields
// required to provide information about calls to Unsubscribe()
type UnsubscribeToken struct {
baseToken
}
// DisconnectToken is an extension of Token containing the extra fields
// required to provide information about calls to Disconnect()
type DisconnectToken struct {
baseToken
}

82
vendor/github.com/eclipse/paho.mqtt.golang/topic.go generated vendored Normal file
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/*
* Copyright (c) 2014 IBM Corp.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Seth Hoenig
* Allan Stockdill-Mander
* Mike Robertson
*/
package mqtt
import (
"errors"
"strings"
)
//ErrInvalidQos is the error returned when an packet is to be sent
//with an invalid Qos value
var ErrInvalidQos = errors.New("Invalid QoS")
//ErrInvalidTopicEmptyString is the error returned when a topic string
//is passed in that is 0 length
var ErrInvalidTopicEmptyString = errors.New("Invalid Topic; empty string")
//ErrInvalidTopicMultilevel is the error returned when a topic string
//is passed in that has the multi level wildcard in any position but
//the last
var ErrInvalidTopicMultilevel = errors.New("Invalid Topic; multi-level wildcard must be last level")
// Topic Names and Topic Filters
// The MQTT v3.1.1 spec clarifies a number of ambiguities with regard
// to the validity of Topic strings.
// - A Topic must be between 1 and 65535 bytes.
// - A Topic is case sensitive.
// - A Topic may contain whitespace.
// - A Topic containing a leading forward slash is different than a Topic without.
// - A Topic may be "/" (two levels, both empty string).
// - A Topic must be UTF-8 encoded.
// - A Topic may contain any number of levels.
// - A Topic may contain an empty level (two forward slashes in a row).
// - A TopicName may not contain a wildcard.
// - A TopicFilter may only have a # (multi-level) wildcard as the last level.
// - A TopicFilter may contain any number of + (single-level) wildcards.
// - A TopicFilter with a # will match the absense of a level
// Example: a subscription to "foo/#" will match messages published to "foo".
func validateSubscribeMap(subs map[string]byte) ([]string, []byte, error) {
var topics []string
var qoss []byte
for topic, qos := range subs {
if err := validateTopicAndQos(topic, qos); err != nil {
return nil, nil, err
}
topics = append(topics, topic)
qoss = append(qoss, qos)
}
return topics, qoss, nil
}
func validateTopicAndQos(topic string, qos byte) error {
if len(topic) == 0 {
return ErrInvalidTopicEmptyString
}
levels := strings.Split(topic, "/")
for i, level := range levels {
if level == "#" && i != len(levels)-1 {
return ErrInvalidTopicMultilevel
}
}
if qos < 0 || qos > 2 {
return ErrInvalidQos
}
return nil
}

40
vendor/github.com/eclipse/paho.mqtt.golang/trace.go generated vendored Normal file
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/*
* Copyright (c) 2013 IBM Corp.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Seth Hoenig
* Allan Stockdill-Mander
* Mike Robertson
*/
package mqtt
type (
// Logger interface allows implementations to provide to this package any
// object that implements the methods defined in it.
Logger interface {
Println(v ...interface{})
Printf(format string, v ...interface{})
}
// NOOPLogger implements the logger that does not perform any operation
// by default. This allows us to efficiently discard the unwanted messages.
NOOPLogger struct{}
)
func (NOOPLogger) Println(v ...interface{}) {}
func (NOOPLogger) Printf(format string, v ...interface{}) {}
// Internal levels of library output that are initialised to not print
// anything but can be overridden by programmer
var (
ERROR Logger = NOOPLogger{}
CRITICAL Logger = NOOPLogger{}
WARN Logger = NOOPLogger{}
DEBUG Logger = NOOPLogger{}
)

3
vendor/github.com/golang/protobuf/AUTHORS generated vendored Normal file
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# This source code refers to The Go Authors for copyright purposes.
# The master list of authors is in the main Go distribution,
# visible at http://tip.golang.org/AUTHORS.

3
vendor/github.com/golang/protobuf/CONTRIBUTORS generated vendored Normal file
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@ -0,0 +1,3 @@
# This source code was written by the Go contributors.
# The master list of contributors is in the main Go distribution,
# visible at http://tip.golang.org/CONTRIBUTORS.

28
vendor/github.com/golang/protobuf/LICENSE generated vendored Normal file
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@ -0,0 +1,28 @@
Copyright 2010 The Go Authors. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the following disclaimer
in the documentation and/or other materials provided with the
distribution.
* Neither the name of Google Inc. nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

253
vendor/github.com/golang/protobuf/proto/clone.go generated vendored Normal file
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// Go support for Protocol Buffers - Google's data interchange format
//
// Copyright 2011 The Go Authors. All rights reserved.
// https://github.com/golang/protobuf
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// Protocol buffer deep copy and merge.
// TODO: RawMessage.
package proto
import (
"fmt"
"log"
"reflect"
"strings"
)
// Clone returns a deep copy of a protocol buffer.
func Clone(src Message) Message {
in := reflect.ValueOf(src)
if in.IsNil() {
return src
}
out := reflect.New(in.Type().Elem())
dst := out.Interface().(Message)
Merge(dst, src)
return dst
}
// Merger is the interface representing objects that can merge messages of the same type.
type Merger interface {
// Merge merges src into this message.
// Required and optional fields that are set in src will be set to that value in dst.
// Elements of repeated fields will be appended.
//
// Merge may panic if called with a different argument type than the receiver.
Merge(src Message)
}
// generatedMerger is the custom merge method that generated protos will have.
// We must add this method since a generate Merge method will conflict with
// many existing protos that have a Merge data field already defined.
type generatedMerger interface {
XXX_Merge(src Message)
}
// Merge merges src into dst.
// Required and optional fields that are set in src will be set to that value in dst.
// Elements of repeated fields will be appended.
// Merge panics if src and dst are not the same type, or if dst is nil.
func Merge(dst, src Message) {
if m, ok := dst.(Merger); ok {
m.Merge(src)
return
}
in := reflect.ValueOf(src)
out := reflect.ValueOf(dst)
if out.IsNil() {
panic("proto: nil destination")
}
if in.Type() != out.Type() {
panic(fmt.Sprintf("proto.Merge(%T, %T) type mismatch", dst, src))
}
if in.IsNil() {
return // Merge from nil src is a noop
}
if m, ok := dst.(generatedMerger); ok {
m.XXX_Merge(src)
return
}
mergeStruct(out.Elem(), in.Elem())
}
func mergeStruct(out, in reflect.Value) {
sprop := GetProperties(in.Type())
for i := 0; i < in.NumField(); i++ {
f := in.Type().Field(i)
if strings.HasPrefix(f.Name, "XXX_") {
continue
}
mergeAny(out.Field(i), in.Field(i), false, sprop.Prop[i])
}
if emIn, err := extendable(in.Addr().Interface()); err == nil {
emOut, _ := extendable(out.Addr().Interface())
mIn, muIn := emIn.extensionsRead()
if mIn != nil {
mOut := emOut.extensionsWrite()
muIn.Lock()
mergeExtension(mOut, mIn)
muIn.Unlock()
}
}
uf := in.FieldByName("XXX_unrecognized")
if !uf.IsValid() {
return
}
uin := uf.Bytes()
if len(uin) > 0 {
out.FieldByName("XXX_unrecognized").SetBytes(append([]byte(nil), uin...))
}
}
// mergeAny performs a merge between two values of the same type.
// viaPtr indicates whether the values were indirected through a pointer (implying proto2).
// prop is set if this is a struct field (it may be nil).
func mergeAny(out, in reflect.Value, viaPtr bool, prop *Properties) {
if in.Type() == protoMessageType {
if !in.IsNil() {
if out.IsNil() {
out.Set(reflect.ValueOf(Clone(in.Interface().(Message))))
} else {
Merge(out.Interface().(Message), in.Interface().(Message))
}
}
return
}
switch in.Kind() {
case reflect.Bool, reflect.Float32, reflect.Float64, reflect.Int32, reflect.Int64,
reflect.String, reflect.Uint32, reflect.Uint64:
if !viaPtr && isProto3Zero(in) {
return
}
out.Set(in)
case reflect.Interface:
// Probably a oneof field; copy non-nil values.
if in.IsNil() {
return
}
// Allocate destination if it is not set, or set to a different type.
// Otherwise we will merge as normal.
if out.IsNil() || out.Elem().Type() != in.Elem().Type() {
out.Set(reflect.New(in.Elem().Elem().Type())) // interface -> *T -> T -> new(T)
}
mergeAny(out.Elem(), in.Elem(), false, nil)
case reflect.Map:
if in.Len() == 0 {
return
}
if out.IsNil() {
out.Set(reflect.MakeMap(in.Type()))
}
// For maps with value types of *T or []byte we need to deep copy each value.
elemKind := in.Type().Elem().Kind()
for _, key := range in.MapKeys() {
var val reflect.Value
switch elemKind {
case reflect.Ptr:
val = reflect.New(in.Type().Elem().Elem())
mergeAny(val, in.MapIndex(key), false, nil)
case reflect.Slice:
val = in.MapIndex(key)
val = reflect.ValueOf(append([]byte{}, val.Bytes()...))
default:
val = in.MapIndex(key)
}
out.SetMapIndex(key, val)
}
case reflect.Ptr:
if in.IsNil() {
return
}
if out.IsNil() {
out.Set(reflect.New(in.Elem().Type()))
}
mergeAny(out.Elem(), in.Elem(), true, nil)
case reflect.Slice:
if in.IsNil() {
return
}
if in.Type().Elem().Kind() == reflect.Uint8 {
// []byte is a scalar bytes field, not a repeated field.
// Edge case: if this is in a proto3 message, a zero length
// bytes field is considered the zero value, and should not
// be merged.
if prop != nil && prop.proto3 && in.Len() == 0 {
return
}
// Make a deep copy.
// Append to []byte{} instead of []byte(nil) so that we never end up
// with a nil result.
out.SetBytes(append([]byte{}, in.Bytes()...))
return
}
n := in.Len()
if out.IsNil() {
out.Set(reflect.MakeSlice(in.Type(), 0, n))
}
switch in.Type().Elem().Kind() {
case reflect.Bool, reflect.Float32, reflect.Float64, reflect.Int32, reflect.Int64,
reflect.String, reflect.Uint32, reflect.Uint64:
out.Set(reflect.AppendSlice(out, in))
default:
for i := 0; i < n; i++ {
x := reflect.Indirect(reflect.New(in.Type().Elem()))
mergeAny(x, in.Index(i), false, nil)
out.Set(reflect.Append(out, x))
}
}
case reflect.Struct:
mergeStruct(out, in)
default:
// unknown type, so not a protocol buffer
log.Printf("proto: don't know how to copy %v", in)
}
}
func mergeExtension(out, in map[int32]Extension) {
for extNum, eIn := range in {
eOut := Extension{desc: eIn.desc}
if eIn.value != nil {
v := reflect.New(reflect.TypeOf(eIn.value)).Elem()
mergeAny(v, reflect.ValueOf(eIn.value), false, nil)
eOut.value = v.Interface()
}
if eIn.enc != nil {
eOut.enc = make([]byte, len(eIn.enc))
copy(eOut.enc, eIn.enc)
}
out[extNum] = eOut
}
}

427
vendor/github.com/golang/protobuf/proto/decode.go generated vendored Normal file
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@ -0,0 +1,427 @@
// Go support for Protocol Buffers - Google's data interchange format
//
// Copyright 2010 The Go Authors. All rights reserved.
// https://github.com/golang/protobuf
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
package proto
/*
* Routines for decoding protocol buffer data to construct in-memory representations.
*/
import (
"errors"
"fmt"
"io"
)
// errOverflow is returned when an integer is too large to be represented.
var errOverflow = errors.New("proto: integer overflow")
// ErrInternalBadWireType is returned by generated code when an incorrect
// wire type is encountered. It does not get returned to user code.
var ErrInternalBadWireType = errors.New("proto: internal error: bad wiretype for oneof")
// DecodeVarint reads a varint-encoded integer from the slice.
// It returns the integer and the number of bytes consumed, or
// zero if there is not enough.
// This is the format for the
// int32, int64, uint32, uint64, bool, and enum
// protocol buffer types.
func DecodeVarint(buf []byte) (x uint64, n int) {
for shift := uint(0); shift < 64; shift += 7 {
if n >= len(buf) {
return 0, 0
}
b := uint64(buf[n])
n++
x |= (b & 0x7F) << shift
if (b & 0x80) == 0 {
return x, n
}
}
// The number is too large to represent in a 64-bit value.
return 0, 0
}
func (p *Buffer) decodeVarintSlow() (x uint64, err error) {
i := p.index
l := len(p.buf)
for shift := uint(0); shift < 64; shift += 7 {
if i >= l {
err = io.ErrUnexpectedEOF
return
}
b := p.buf[i]
i++
x |= (uint64(b) & 0x7F) << shift
if b < 0x80 {
p.index = i
return
}
}
// The number is too large to represent in a 64-bit value.
err = errOverflow
return
}
// DecodeVarint reads a varint-encoded integer from the Buffer.
// This is the format for the
// int32, int64, uint32, uint64, bool, and enum
// protocol buffer types.
func (p *Buffer) DecodeVarint() (x uint64, err error) {
i := p.index
buf := p.buf
if i >= len(buf) {
return 0, io.ErrUnexpectedEOF
} else if buf[i] < 0x80 {
p.index++
return uint64(buf[i]), nil
} else if len(buf)-i < 10 {
return p.decodeVarintSlow()
}
var b uint64
// we already checked the first byte
x = uint64(buf[i]) - 0x80
i++
b = uint64(buf[i])
i++
x += b << 7
if b&0x80 == 0 {
goto done
}
x -= 0x80 << 7
b = uint64(buf[i])
i++
x += b << 14
if b&0x80 == 0 {
goto done
}
x -= 0x80 << 14
b = uint64(buf[i])
i++
x += b << 21
if b&0x80 == 0 {
goto done
}
x -= 0x80 << 21
b = uint64(buf[i])
i++
x += b << 28
if b&0x80 == 0 {
goto done
}
x -= 0x80 << 28
b = uint64(buf[i])
i++
x += b << 35
if b&0x80 == 0 {
goto done
}
x -= 0x80 << 35
b = uint64(buf[i])
i++
x += b << 42
if b&0x80 == 0 {
goto done
}
x -= 0x80 << 42
b = uint64(buf[i])
i++
x += b << 49
if b&0x80 == 0 {
goto done
}
x -= 0x80 << 49
b = uint64(buf[i])
i++
x += b << 56
if b&0x80 == 0 {
goto done
}
x -= 0x80 << 56
b = uint64(buf[i])
i++
x += b << 63
if b&0x80 == 0 {
goto done
}
return 0, errOverflow
done:
p.index = i
return x, nil
}
// DecodeFixed64 reads a 64-bit integer from the Buffer.
// This is the format for the
// fixed64, sfixed64, and double protocol buffer types.
func (p *Buffer) DecodeFixed64() (x uint64, err error) {
// x, err already 0
i := p.index + 8
if i < 0 || i > len(p.buf) {
err = io.ErrUnexpectedEOF
return
}
p.index = i
x = uint64(p.buf[i-8])
x |= uint64(p.buf[i-7]) << 8
x |= uint64(p.buf[i-6]) << 16
x |= uint64(p.buf[i-5]) << 24
x |= uint64(p.buf[i-4]) << 32
x |= uint64(p.buf[i-3]) << 40
x |= uint64(p.buf[i-2]) << 48
x |= uint64(p.buf[i-1]) << 56
return
}
// DecodeFixed32 reads a 32-bit integer from the Buffer.
// This is the format for the
// fixed32, sfixed32, and float protocol buffer types.
func (p *Buffer) DecodeFixed32() (x uint64, err error) {
// x, err already 0
i := p.index + 4
if i < 0 || i > len(p.buf) {
err = io.ErrUnexpectedEOF
return
}
p.index = i
x = uint64(p.buf[i-4])
x |= uint64(p.buf[i-3]) << 8
x |= uint64(p.buf[i-2]) << 16
x |= uint64(p.buf[i-1]) << 24
return
}
// DecodeZigzag64 reads a zigzag-encoded 64-bit integer
// from the Buffer.
// This is the format used for the sint64 protocol buffer type.
func (p *Buffer) DecodeZigzag64() (x uint64, err error) {
x, err = p.DecodeVarint()
if err != nil {
return
}
x = (x >> 1) ^ uint64((int64(x&1)<<63)>>63)
return
}
// DecodeZigzag32 reads a zigzag-encoded 32-bit integer
// from the Buffer.
// This is the format used for the sint32 protocol buffer type.
func (p *Buffer) DecodeZigzag32() (x uint64, err error) {
x, err = p.DecodeVarint()
if err != nil {
return
}
x = uint64((uint32(x) >> 1) ^ uint32((int32(x&1)<<31)>>31))
return
}
// DecodeRawBytes reads a count-delimited byte buffer from the Buffer.
// This is the format used for the bytes protocol buffer
// type and for embedded messages.
func (p *Buffer) DecodeRawBytes(alloc bool) (buf []byte, err error) {
n, err := p.DecodeVarint()
if err != nil {
return nil, err
}
nb := int(n)
if nb < 0 {
return nil, fmt.Errorf("proto: bad byte length %d", nb)
}
end := p.index + nb
if end < p.index || end > len(p.buf) {
return nil, io.ErrUnexpectedEOF
}
if !alloc {
// todo: check if can get more uses of alloc=false
buf = p.buf[p.index:end]
p.index += nb
return
}
buf = make([]byte, nb)
copy(buf, p.buf[p.index:])
p.index += nb
return
}
// DecodeStringBytes reads an encoded string from the Buffer.
// This is the format used for the proto2 string type.
func (p *Buffer) DecodeStringBytes() (s string, err error) {
buf, err := p.DecodeRawBytes(false)
if err != nil {
return
}
return string(buf), nil
}
// Unmarshaler is the interface representing objects that can
// unmarshal themselves. The argument points to data that may be
// overwritten, so implementations should not keep references to the
// buffer.
// Unmarshal implementations should not clear the receiver.
// Any unmarshaled data should be merged into the receiver.
// Callers of Unmarshal that do not want to retain existing data
// should Reset the receiver before calling Unmarshal.
type Unmarshaler interface {
Unmarshal([]byte) error
}
// newUnmarshaler is the interface representing objects that can
// unmarshal themselves. The semantics are identical to Unmarshaler.
//
// This exists to support protoc-gen-go generated messages.
// The proto package will stop type-asserting to this interface in the future.
//
// DO NOT DEPEND ON THIS.
type newUnmarshaler interface {
XXX_Unmarshal([]byte) error
}
// Unmarshal parses the protocol buffer representation in buf and places the
// decoded result in pb. If the struct underlying pb does not match
// the data in buf, the results can be unpredictable.
//
// Unmarshal resets pb before starting to unmarshal, so any
// existing data in pb is always removed. Use UnmarshalMerge
// to preserve and append to existing data.
func Unmarshal(buf []byte, pb Message) error {
pb.Reset()
if u, ok := pb.(newUnmarshaler); ok {
return u.XXX_Unmarshal(buf)
}
if u, ok := pb.(Unmarshaler); ok {
return u.Unmarshal(buf)
}
return NewBuffer(buf).Unmarshal(pb)
}
// UnmarshalMerge parses the protocol buffer representation in buf and
// writes the decoded result to pb. If the struct underlying pb does not match
// the data in buf, the results can be unpredictable.
//
// UnmarshalMerge merges into existing data in pb.
// Most code should use Unmarshal instead.
func UnmarshalMerge(buf []byte, pb Message) error {
if u, ok := pb.(newUnmarshaler); ok {
return u.XXX_Unmarshal(buf)
}
if u, ok := pb.(Unmarshaler); ok {
// NOTE: The history of proto have unfortunately been inconsistent
// whether Unmarshaler should or should not implicitly clear itself.
// Some implementations do, most do not.
// Thus, calling this here may or may not do what people want.
//
// See https://github.com/golang/protobuf/issues/424
return u.Unmarshal(buf)
}
return NewBuffer(buf).Unmarshal(pb)
}
// DecodeMessage reads a count-delimited message from the Buffer.
func (p *Buffer) DecodeMessage(pb Message) error {
enc, err := p.DecodeRawBytes(false)
if err != nil {
return err
}
return NewBuffer(enc).Unmarshal(pb)
}
// DecodeGroup reads a tag-delimited group from the Buffer.
// StartGroup tag is already consumed. This function consumes
// EndGroup tag.
func (p *Buffer) DecodeGroup(pb Message) error {
b := p.buf[p.index:]
x, y := findEndGroup(b)
if x < 0 {
return io.ErrUnexpectedEOF
}
err := Unmarshal(b[:x], pb)
p.index += y
return err
}
// Unmarshal parses the protocol buffer representation in the
// Buffer and places the decoded result in pb. If the struct
// underlying pb does not match the data in the buffer, the results can be
// unpredictable.
//
// Unlike proto.Unmarshal, this does not reset pb before starting to unmarshal.
func (p *Buffer) Unmarshal(pb Message) error {
// If the object can unmarshal itself, let it.
if u, ok := pb.(newUnmarshaler); ok {
err := u.XXX_Unmarshal(p.buf[p.index:])
p.index = len(p.buf)
return err
}
if u, ok := pb.(Unmarshaler); ok {
// NOTE: The history of proto have unfortunately been inconsistent
// whether Unmarshaler should or should not implicitly clear itself.
// Some implementations do, most do not.
// Thus, calling this here may or may not do what people want.
//
// See https://github.com/golang/protobuf/issues/424
err := u.Unmarshal(p.buf[p.index:])
p.index = len(p.buf)
return err
}
// Slow workaround for messages that aren't Unmarshalers.
// This includes some hand-coded .pb.go files and
// bootstrap protos.
// TODO: fix all of those and then add Unmarshal to
// the Message interface. Then:
// The cast above and code below can be deleted.
// The old unmarshaler can be deleted.
// Clients can call Unmarshal directly (can already do that, actually).
var info InternalMessageInfo
err := info.Unmarshal(pb, p.buf[p.index:])
p.index = len(p.buf)
return err
}

63
vendor/github.com/golang/protobuf/proto/deprecated.go generated vendored Normal file
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// Go support for Protocol Buffers - Google's data interchange format
//
// Copyright 2018 The Go Authors. All rights reserved.
// https://github.com/golang/protobuf
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
package proto
import "errors"
// Deprecated: do not use.
type Stats struct{ Emalloc, Dmalloc, Encode, Decode, Chit, Cmiss, Size uint64 }
// Deprecated: do not use.
func GetStats() Stats { return Stats{} }
// Deprecated: do not use.
func MarshalMessageSet(interface{}) ([]byte, error) {
return nil, errors.New("proto: not implemented")
}
// Deprecated: do not use.
func UnmarshalMessageSet([]byte, interface{}) error {
return errors.New("proto: not implemented")
}
// Deprecated: do not use.
func MarshalMessageSetJSON(interface{}) ([]byte, error) {
return nil, errors.New("proto: not implemented")
}
// Deprecated: do not use.
func UnmarshalMessageSetJSON([]byte, interface{}) error {
return errors.New("proto: not implemented")
}
// Deprecated: do not use.
func RegisterMessageSetType(Message, int32, string) {}

350
vendor/github.com/golang/protobuf/proto/discard.go generated vendored Normal file
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// Go support for Protocol Buffers - Google's data interchange format
//
// Copyright 2017 The Go Authors. All rights reserved.
// https://github.com/golang/protobuf
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
package proto
import (
"fmt"
"reflect"
"strings"
"sync"
"sync/atomic"
)
type generatedDiscarder interface {
XXX_DiscardUnknown()
}
// DiscardUnknown recursively discards all unknown fields from this message
// and all embedded messages.
//
// When unmarshaling a message with unrecognized fields, the tags and values
// of such fields are preserved in the Message. This allows a later call to
// marshal to be able to produce a message that continues to have those
// unrecognized fields. To avoid this, DiscardUnknown is used to
// explicitly clear the unknown fields after unmarshaling.
//
// For proto2 messages, the unknown fields of message extensions are only
// discarded from messages that have been accessed via GetExtension.
func DiscardUnknown(m Message) {
if m, ok := m.(generatedDiscarder); ok {
m.XXX_DiscardUnknown()
return
}
// TODO: Dynamically populate a InternalMessageInfo for legacy messages,
// but the master branch has no implementation for InternalMessageInfo,
// so it would be more work to replicate that approach.
discardLegacy(m)
}
// DiscardUnknown recursively discards all unknown fields.
func (a *InternalMessageInfo) DiscardUnknown(m Message) {
di := atomicLoadDiscardInfo(&a.discard)
if di == nil {
di = getDiscardInfo(reflect.TypeOf(m).Elem())
atomicStoreDiscardInfo(&a.discard, di)
}
di.discard(toPointer(&m))
}
type discardInfo struct {
typ reflect.Type
initialized int32 // 0: only typ is valid, 1: everything is valid
lock sync.Mutex
fields []discardFieldInfo
unrecognized field
}
type discardFieldInfo struct {
field field // Offset of field, guaranteed to be valid
discard func(src pointer)
}
var (
discardInfoMap = map[reflect.Type]*discardInfo{}
discardInfoLock sync.Mutex
)
func getDiscardInfo(t reflect.Type) *discardInfo {
discardInfoLock.Lock()
defer discardInfoLock.Unlock()
di := discardInfoMap[t]
if di == nil {
di = &discardInfo{typ: t}
discardInfoMap[t] = di
}
return di
}
func (di *discardInfo) discard(src pointer) {
if src.isNil() {
return // Nothing to do.
}
if atomic.LoadInt32(&di.initialized) == 0 {
di.computeDiscardInfo()
}
for _, fi := range di.fields {
sfp := src.offset(fi.field)
fi.discard(sfp)
}
// For proto2 messages, only discard unknown fields in message extensions
// that have been accessed via GetExtension.
if em, err := extendable(src.asPointerTo(di.typ).Interface()); err == nil {
// Ignore lock since DiscardUnknown is not concurrency safe.
emm, _ := em.extensionsRead()
for _, mx := range emm {
if m, ok := mx.value.(Message); ok {
DiscardUnknown(m)
}
}
}
if di.unrecognized.IsValid() {
*src.offset(di.unrecognized).toBytes() = nil
}
}
func (di *discardInfo) computeDiscardInfo() {
di.lock.Lock()
defer di.lock.Unlock()
if di.initialized != 0 {
return
}
t := di.typ
n := t.NumField()
for i := 0; i < n; i++ {
f := t.Field(i)
if strings.HasPrefix(f.Name, "XXX_") {
continue
}
dfi := discardFieldInfo{field: toField(&f)}
tf := f.Type
// Unwrap tf to get its most basic type.
var isPointer, isSlice bool
if tf.Kind() == reflect.Slice && tf.Elem().Kind() != reflect.Uint8 {
isSlice = true
tf = tf.Elem()
}
if tf.Kind() == reflect.Ptr {
isPointer = true
tf = tf.Elem()
}
if isPointer && isSlice && tf.Kind() != reflect.Struct {
panic(fmt.Sprintf("%v.%s cannot be a slice of pointers to primitive types", t, f.Name))
}
switch tf.Kind() {
case reflect.Struct:
switch {
case !isPointer:
panic(fmt.Sprintf("%v.%s cannot be a direct struct value", t, f.Name))
case isSlice: // E.g., []*pb.T
di := getDiscardInfo(tf)
dfi.discard = func(src pointer) {
sps := src.getPointerSlice()
for _, sp := range sps {
if !sp.isNil() {
di.discard(sp)
}
}
}
default: // E.g., *pb.T
di := getDiscardInfo(tf)
dfi.discard = func(src pointer) {
sp := src.getPointer()
if !sp.isNil() {
di.discard(sp)
}
}
}
case reflect.Map:
switch {
case isPointer || isSlice:
panic(fmt.Sprintf("%v.%s cannot be a pointer to a map or a slice of map values", t, f.Name))
default: // E.g., map[K]V
if tf.Elem().Kind() == reflect.Ptr { // Proto struct (e.g., *T)
dfi.discard = func(src pointer) {
sm := src.asPointerTo(tf).Elem()
if sm.Len() == 0 {
return
}
for _, key := range sm.MapKeys() {
val := sm.MapIndex(key)
DiscardUnknown(val.Interface().(Message))
}
}
} else {
dfi.discard = func(pointer) {} // Noop
}
}
case reflect.Interface:
// Must be oneof field.
switch {
case isPointer || isSlice:
panic(fmt.Sprintf("%v.%s cannot be a pointer to a interface or a slice of interface values", t, f.Name))
default: // E.g., interface{}
// TODO: Make this faster?
dfi.discard = func(src pointer) {
su := src.asPointerTo(tf).Elem()
if !su.IsNil() {
sv := su.Elem().Elem().Field(0)
if sv.Kind() == reflect.Ptr && sv.IsNil() {
return
}
switch sv.Type().Kind() {
case reflect.Ptr: // Proto struct (e.g., *T)
DiscardUnknown(sv.Interface().(Message))
}
}
}
}
default:
continue
}
di.fields = append(di.fields, dfi)
}
di.unrecognized = invalidField
if f, ok := t.FieldByName("XXX_unrecognized"); ok {
if f.Type != reflect.TypeOf([]byte{}) {
panic("expected XXX_unrecognized to be of type []byte")
}
di.unrecognized = toField(&f)
}
atomic.StoreInt32(&di.initialized, 1)
}
func discardLegacy(m Message) {
v := reflect.ValueOf(m)
if v.Kind() != reflect.Ptr || v.IsNil() {
return
}
v = v.Elem()
if v.Kind() != reflect.Struct {
return
}
t := v.Type()
for i := 0; i < v.NumField(); i++ {
f := t.Field(i)
if strings.HasPrefix(f.Name, "XXX_") {
continue
}
vf := v.Field(i)
tf := f.Type
// Unwrap tf to get its most basic type.
var isPointer, isSlice bool
if tf.Kind() == reflect.Slice && tf.Elem().Kind() != reflect.Uint8 {
isSlice = true
tf = tf.Elem()
}
if tf.Kind() == reflect.Ptr {
isPointer = true
tf = tf.Elem()
}
if isPointer && isSlice && tf.Kind() != reflect.Struct {
panic(fmt.Sprintf("%T.%s cannot be a slice of pointers to primitive types", m, f.Name))
}
switch tf.Kind() {
case reflect.Struct:
switch {
case !isPointer:
panic(fmt.Sprintf("%T.%s cannot be a direct struct value", m, f.Name))
case isSlice: // E.g., []*pb.T
for j := 0; j < vf.Len(); j++ {
discardLegacy(vf.Index(j).Interface().(Message))
}
default: // E.g., *pb.T
discardLegacy(vf.Interface().(Message))
}
case reflect.Map:
switch {
case isPointer || isSlice:
panic(fmt.Sprintf("%T.%s cannot be a pointer to a map or a slice of map values", m, f.Name))
default: // E.g., map[K]V
tv := vf.Type().Elem()
if tv.Kind() == reflect.Ptr && tv.Implements(protoMessageType) { // Proto struct (e.g., *T)
for _, key := range vf.MapKeys() {
val := vf.MapIndex(key)
discardLegacy(val.Interface().(Message))
}
}
}
case reflect.Interface:
// Must be oneof field.
switch {
case isPointer || isSlice:
panic(fmt.Sprintf("%T.%s cannot be a pointer to a interface or a slice of interface values", m, f.Name))
default: // E.g., test_proto.isCommunique_Union interface
if !vf.IsNil() && f.Tag.Get("protobuf_oneof") != "" {
vf = vf.Elem() // E.g., *test_proto.Communique_Msg
if !vf.IsNil() {
vf = vf.Elem() // E.g., test_proto.Communique_Msg
vf = vf.Field(0) // E.g., Proto struct (e.g., *T) or primitive value
if vf.Kind() == reflect.Ptr {
discardLegacy(vf.Interface().(Message))
}
}
}
}
}
}
if vf := v.FieldByName("XXX_unrecognized"); vf.IsValid() {
if vf.Type() != reflect.TypeOf([]byte{}) {
panic("expected XXX_unrecognized to be of type []byte")
}
vf.Set(reflect.ValueOf([]byte(nil)))
}
// For proto2 messages, only discard unknown fields in message extensions
// that have been accessed via GetExtension.
if em, err := extendable(m); err == nil {
// Ignore lock since discardLegacy is not concurrency safe.
emm, _ := em.extensionsRead()
for _, mx := range emm {
if m, ok := mx.value.(Message); ok {
discardLegacy(m)
}
}
}
}

203
vendor/github.com/golang/protobuf/proto/encode.go generated vendored Normal file
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// Go support for Protocol Buffers - Google's data interchange format
//
// Copyright 2010 The Go Authors. All rights reserved.
// https://github.com/golang/protobuf
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
package proto
/*
* Routines for encoding data into the wire format for protocol buffers.
*/
import (
"errors"
"reflect"
)
var (
// errRepeatedHasNil is the error returned if Marshal is called with
// a struct with a repeated field containing a nil element.
errRepeatedHasNil = errors.New("proto: repeated field has nil element")
// errOneofHasNil is the error returned if Marshal is called with
// a struct with a oneof field containing a nil element.
errOneofHasNil = errors.New("proto: oneof field has nil value")
// ErrNil is the error returned if Marshal is called with nil.
ErrNil = errors.New("proto: Marshal called with nil")
// ErrTooLarge is the error returned if Marshal is called with a
// message that encodes to >2GB.
ErrTooLarge = errors.New("proto: message encodes to over 2 GB")
)
// The fundamental encoders that put bytes on the wire.
// Those that take integer types all accept uint64 and are
// therefore of type valueEncoder.
const maxVarintBytes = 10 // maximum length of a varint
// EncodeVarint returns the varint encoding of x.
// This is the format for the
// int32, int64, uint32, uint64, bool, and enum
// protocol buffer types.
// Not used by the package itself, but helpful to clients
// wishing to use the same encoding.
func EncodeVarint(x uint64) []byte {
var buf [maxVarintBytes]byte
var n int
for n = 0; x > 127; n++ {
buf[n] = 0x80 | uint8(x&0x7F)
x >>= 7
}
buf[n] = uint8(x)
n++
return buf[0:n]
}
// EncodeVarint writes a varint-encoded integer to the Buffer.
// This is the format for the
// int32, int64, uint32, uint64, bool, and enum
// protocol buffer types.
func (p *Buffer) EncodeVarint(x uint64) error {
for x >= 1<<7 {
p.buf = append(p.buf, uint8(x&0x7f|0x80))
x >>= 7
}
p.buf = append(p.buf, uint8(x))
return nil
}
// SizeVarint returns the varint encoding size of an integer.
func SizeVarint(x uint64) int {
switch {
case x < 1<<7:
return 1
case x < 1<<14:
return 2
case x < 1<<21:
return 3
case x < 1<<28:
return 4
case x < 1<<35:
return 5
case x < 1<<42:
return 6
case x < 1<<49:
return 7
case x < 1<<56:
return 8
case x < 1<<63:
return 9
}
return 10
}
// EncodeFixed64 writes a 64-bit integer to the Buffer.
// This is the format for the
// fixed64, sfixed64, and double protocol buffer types.
func (p *Buffer) EncodeFixed64(x uint64) error {
p.buf = append(p.buf,
uint8(x),
uint8(x>>8),
uint8(x>>16),
uint8(x>>24),
uint8(x>>32),
uint8(x>>40),
uint8(x>>48),
uint8(x>>56))
return nil
}
// EncodeFixed32 writes a 32-bit integer to the Buffer.
// This is the format for the
// fixed32, sfixed32, and float protocol buffer types.
func (p *Buffer) EncodeFixed32(x uint64) error {
p.buf = append(p.buf,
uint8(x),
uint8(x>>8),
uint8(x>>16),
uint8(x>>24))
return nil
}
// EncodeZigzag64 writes a zigzag-encoded 64-bit integer
// to the Buffer.
// This is the format used for the sint64 protocol buffer type.
func (p *Buffer) EncodeZigzag64(x uint64) error {
// use signed number to get arithmetic right shift.
return p.EncodeVarint(uint64((x << 1) ^ uint64((int64(x) >> 63))))
}
// EncodeZigzag32 writes a zigzag-encoded 32-bit integer
// to the Buffer.
// This is the format used for the sint32 protocol buffer type.
func (p *Buffer) EncodeZigzag32(x uint64) error {
// use signed number to get arithmetic right shift.
return p.EncodeVarint(uint64((uint32(x) << 1) ^ uint32((int32(x) >> 31))))
}
// EncodeRawBytes writes a count-delimited byte buffer to the Buffer.
// This is the format used for the bytes protocol buffer
// type and for embedded messages.
func (p *Buffer) EncodeRawBytes(b []byte) error {
p.EncodeVarint(uint64(len(b)))
p.buf = append(p.buf, b...)
return nil
}
// EncodeStringBytes writes an encoded string to the Buffer.
// This is the format used for the proto2 string type.
func (p *Buffer) EncodeStringBytes(s string) error {
p.EncodeVarint(uint64(len(s)))
p.buf = append(p.buf, s...)
return nil
}
// Marshaler is the interface representing objects that can marshal themselves.
type Marshaler interface {
Marshal() ([]byte, error)
}
// EncodeMessage writes the protocol buffer to the Buffer,
// prefixed by a varint-encoded length.
func (p *Buffer) EncodeMessage(pb Message) error {
siz := Size(pb)
p.EncodeVarint(uint64(siz))
return p.Marshal(pb)
}
// All protocol buffer fields are nillable, but be careful.
func isNil(v reflect.Value) bool {
switch v.Kind() {
case reflect.Interface, reflect.Map, reflect.Ptr, reflect.Slice:
return v.IsNil()
}
return false
}

301
vendor/github.com/golang/protobuf/proto/equal.go generated vendored Normal file
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// Go support for Protocol Buffers - Google's data interchange format
//
// Copyright 2011 The Go Authors. All rights reserved.
// https://github.com/golang/protobuf
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// Protocol buffer comparison.
package proto
import (
"bytes"
"log"
"reflect"
"strings"
)
/*
Equal returns true iff protocol buffers a and b are equal.
The arguments must both be pointers to protocol buffer structs.
Equality is defined in this way:
- Two messages are equal iff they are the same type,
corresponding fields are equal, unknown field sets
are equal, and extensions sets are equal.
- Two set scalar fields are equal iff their values are equal.
If the fields are of a floating-point type, remember that
NaN != x for all x, including NaN. If the message is defined
in a proto3 .proto file, fields are not "set"; specifically,
zero length proto3 "bytes" fields are equal (nil == {}).
- Two repeated fields are equal iff their lengths are the same,
and their corresponding elements are equal. Note a "bytes" field,
although represented by []byte, is not a repeated field and the
rule for the scalar fields described above applies.
- Two unset fields are equal.
- Two unknown field sets are equal if their current
encoded state is equal.
- Two extension sets are equal iff they have corresponding
elements that are pairwise equal.
- Two map fields are equal iff their lengths are the same,
and they contain the same set of elements. Zero-length map
fields are equal.
- Every other combination of things are not equal.
The return value is undefined if a and b are not protocol buffers.
*/
func Equal(a, b Message) bool {
if a == nil || b == nil {
return a == b
}
v1, v2 := reflect.ValueOf(a), reflect.ValueOf(b)
if v1.Type() != v2.Type() {
return false
}
if v1.Kind() == reflect.Ptr {
if v1.IsNil() {
return v2.IsNil()
}
if v2.IsNil() {
return false
}
v1, v2 = v1.Elem(), v2.Elem()
}
if v1.Kind() != reflect.Struct {
return false
}
return equalStruct(v1, v2)
}
// v1 and v2 are known to have the same type.
func equalStruct(v1, v2 reflect.Value) bool {
sprop := GetProperties(v1.Type())
for i := 0; i < v1.NumField(); i++ {
f := v1.Type().Field(i)
if strings.HasPrefix(f.Name, "XXX_") {
continue
}
f1, f2 := v1.Field(i), v2.Field(i)
if f.Type.Kind() == reflect.Ptr {
if n1, n2 := f1.IsNil(), f2.IsNil(); n1 && n2 {
// both unset
continue
} else if n1 != n2 {
// set/unset mismatch
return false
}
f1, f2 = f1.Elem(), f2.Elem()
}
if !equalAny(f1, f2, sprop.Prop[i]) {
return false
}
}
if em1 := v1.FieldByName("XXX_InternalExtensions"); em1.IsValid() {
em2 := v2.FieldByName("XXX_InternalExtensions")
if !equalExtensions(v1.Type(), em1.Interface().(XXX_InternalExtensions), em2.Interface().(XXX_InternalExtensions)) {
return false
}
}
if em1 := v1.FieldByName("XXX_extensions"); em1.IsValid() {
em2 := v2.FieldByName("XXX_extensions")
if !equalExtMap(v1.Type(), em1.Interface().(map[int32]Extension), em2.Interface().(map[int32]Extension)) {
return false
}
}
uf := v1.FieldByName("XXX_unrecognized")
if !uf.IsValid() {
return true
}
u1 := uf.Bytes()
u2 := v2.FieldByName("XXX_unrecognized").Bytes()
return bytes.Equal(u1, u2)
}
// v1 and v2 are known to have the same type.
// prop may be nil.
func equalAny(v1, v2 reflect.Value, prop *Properties) bool {
if v1.Type() == protoMessageType {
m1, _ := v1.Interface().(Message)
m2, _ := v2.Interface().(Message)
return Equal(m1, m2)
}
switch v1.Kind() {
case reflect.Bool:
return v1.Bool() == v2.Bool()
case reflect.Float32, reflect.Float64:
return v1.Float() == v2.Float()
case reflect.Int32, reflect.Int64:
return v1.Int() == v2.Int()
case reflect.Interface:
// Probably a oneof field; compare the inner values.
n1, n2 := v1.IsNil(), v2.IsNil()
if n1 || n2 {
return n1 == n2
}
e1, e2 := v1.Elem(), v2.Elem()
if e1.Type() != e2.Type() {
return false
}
return equalAny(e1, e2, nil)
case reflect.Map:
if v1.Len() != v2.Len() {
return false
}
for _, key := range v1.MapKeys() {
val2 := v2.MapIndex(key)
if !val2.IsValid() {
// This key was not found in the second map.
return false
}
if !equalAny(v1.MapIndex(key), val2, nil) {
return false
}
}
return true
case reflect.Ptr:
// Maps may have nil values in them, so check for nil.
if v1.IsNil() && v2.IsNil() {
return true
}
if v1.IsNil() != v2.IsNil() {
return false
}
return equalAny(v1.Elem(), v2.Elem(), prop)
case reflect.Slice:
if v1.Type().Elem().Kind() == reflect.Uint8 {
// short circuit: []byte
// Edge case: if this is in a proto3 message, a zero length
// bytes field is considered the zero value.
if prop != nil && prop.proto3 && v1.Len() == 0 && v2.Len() == 0 {
return true
}
if v1.IsNil() != v2.IsNil() {
return false
}
return bytes.Equal(v1.Interface().([]byte), v2.Interface().([]byte))
}
if v1.Len() != v2.Len() {
return false
}
for i := 0; i < v1.Len(); i++ {
if !equalAny(v1.Index(i), v2.Index(i), prop) {
return false
}
}
return true
case reflect.String:
return v1.Interface().(string) == v2.Interface().(string)
case reflect.Struct:
return equalStruct(v1, v2)
case reflect.Uint32, reflect.Uint64:
return v1.Uint() == v2.Uint()
}
// unknown type, so not a protocol buffer
log.Printf("proto: don't know how to compare %v", v1)
return false
}
// base is the struct type that the extensions are based on.
// x1 and x2 are InternalExtensions.
func equalExtensions(base reflect.Type, x1, x2 XXX_InternalExtensions) bool {
em1, _ := x1.extensionsRead()
em2, _ := x2.extensionsRead()
return equalExtMap(base, em1, em2)
}
func equalExtMap(base reflect.Type, em1, em2 map[int32]Extension) bool {
if len(em1) != len(em2) {
return false
}
for extNum, e1 := range em1 {
e2, ok := em2[extNum]
if !ok {
return false
}
m1 := extensionAsLegacyType(e1.value)
m2 := extensionAsLegacyType(e2.value)
if m1 == nil && m2 == nil {
// Both have only encoded form.
if bytes.Equal(e1.enc, e2.enc) {
continue
}
// The bytes are different, but the extensions might still be
// equal. We need to decode them to compare.
}
if m1 != nil && m2 != nil {
// Both are unencoded.
if !equalAny(reflect.ValueOf(m1), reflect.ValueOf(m2), nil) {
return false
}
continue
}
// At least one is encoded. To do a semantically correct comparison
// we need to unmarshal them first.
var desc *ExtensionDesc
if m := extensionMaps[base]; m != nil {
desc = m[extNum]
}
if desc == nil {
// If both have only encoded form and the bytes are the same,
// it is handled above. We get here when the bytes are different.
// We don't know how to decode it, so just compare them as byte
// slices.
log.Printf("proto: don't know how to compare extension %d of %v", extNum, base)
return false
}
var err error
if m1 == nil {
m1, err = decodeExtension(e1.enc, desc)
}
if m2 == nil && err == nil {
m2, err = decodeExtension(e2.enc, desc)
}
if err != nil {
// The encoded form is invalid.
log.Printf("proto: badly encoded extension %d of %v: %v", extNum, base, err)
return false
}
if !equalAny(reflect.ValueOf(m1), reflect.ValueOf(m2), nil) {
return false
}
}
return true
}

607
vendor/github.com/golang/protobuf/proto/extensions.go generated vendored Normal file
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@ -0,0 +1,607 @@
// Go support for Protocol Buffers - Google's data interchange format
//
// Copyright 2010 The Go Authors. All rights reserved.
// https://github.com/golang/protobuf
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
package proto
/*
* Types and routines for supporting protocol buffer extensions.
*/
import (
"errors"
"fmt"
"io"
"reflect"
"strconv"
"sync"
)
// ErrMissingExtension is the error returned by GetExtension if the named extension is not in the message.
var ErrMissingExtension = errors.New("proto: missing extension")
// ExtensionRange represents a range of message extensions for a protocol buffer.
// Used in code generated by the protocol compiler.
type ExtensionRange struct {
Start, End int32 // both inclusive
}
// extendableProto is an interface implemented by any protocol buffer generated by the current
// proto compiler that may be extended.
type extendableProto interface {
Message
ExtensionRangeArray() []ExtensionRange
extensionsWrite() map[int32]Extension
extensionsRead() (map[int32]Extension, sync.Locker)
}
// extendableProtoV1 is an interface implemented by a protocol buffer generated by the previous
// version of the proto compiler that may be extended.
type extendableProtoV1 interface {
Message
ExtensionRangeArray() []ExtensionRange
ExtensionMap() map[int32]Extension
}
// extensionAdapter is a wrapper around extendableProtoV1 that implements extendableProto.
type extensionAdapter struct {
extendableProtoV1
}
func (e extensionAdapter) extensionsWrite() map[int32]Extension {
return e.ExtensionMap()
}
func (e extensionAdapter) extensionsRead() (map[int32]Extension, sync.Locker) {
return e.ExtensionMap(), notLocker{}
}
// notLocker is a sync.Locker whose Lock and Unlock methods are nops.
type notLocker struct{}
func (n notLocker) Lock() {}
func (n notLocker) Unlock() {}
// extendable returns the extendableProto interface for the given generated proto message.
// If the proto message has the old extension format, it returns a wrapper that implements
// the extendableProto interface.
func extendable(p interface{}) (extendableProto, error) {
switch p := p.(type) {
case extendableProto:
if isNilPtr(p) {
return nil, fmt.Errorf("proto: nil %T is not extendable", p)
}
return p, nil
case extendableProtoV1:
if isNilPtr(p) {
return nil, fmt.Errorf("proto: nil %T is not extendable", p)
}
return extensionAdapter{p}, nil
}
// Don't allocate a specific error containing %T:
// this is the hot path for Clone and MarshalText.
return nil, errNotExtendable
}
var errNotExtendable = errors.New("proto: not an extendable proto.Message")
func isNilPtr(x interface{}) bool {
v := reflect.ValueOf(x)
return v.Kind() == reflect.Ptr && v.IsNil()
}
// XXX_InternalExtensions is an internal representation of proto extensions.
//
// Each generated message struct type embeds an anonymous XXX_InternalExtensions field,
// thus gaining the unexported 'extensions' method, which can be called only from the proto package.
//
// The methods of XXX_InternalExtensions are not concurrency safe in general,
// but calls to logically read-only methods such as has and get may be executed concurrently.
type XXX_InternalExtensions struct {
// The struct must be indirect so that if a user inadvertently copies a
// generated message and its embedded XXX_InternalExtensions, they
// avoid the mayhem of a copied mutex.
//
// The mutex serializes all logically read-only operations to p.extensionMap.
// It is up to the client to ensure that write operations to p.extensionMap are
// mutually exclusive with other accesses.
p *struct {
mu sync.Mutex
extensionMap map[int32]Extension
}
}
// extensionsWrite returns the extension map, creating it on first use.
func (e *XXX_InternalExtensions) extensionsWrite() map[int32]Extension {
if e.p == nil {
e.p = new(struct {
mu sync.Mutex
extensionMap map[int32]Extension
})
e.p.extensionMap = make(map[int32]Extension)
}
return e.p.extensionMap
}
// extensionsRead returns the extensions map for read-only use. It may be nil.
// The caller must hold the returned mutex's lock when accessing Elements within the map.
func (e *XXX_InternalExtensions) extensionsRead() (map[int32]Extension, sync.Locker) {
if e.p == nil {
return nil, nil
}
return e.p.extensionMap, &e.p.mu
}
// ExtensionDesc represents an extension specification.
// Used in generated code from the protocol compiler.
type ExtensionDesc struct {
ExtendedType Message // nil pointer to the type that is being extended
ExtensionType interface{} // nil pointer to the extension type
Field int32 // field number
Name string // fully-qualified name of extension, for text formatting
Tag string // protobuf tag style
Filename string // name of the file in which the extension is defined
}
func (ed *ExtensionDesc) repeated() bool {
t := reflect.TypeOf(ed.ExtensionType)
return t.Kind() == reflect.Slice && t.Elem().Kind() != reflect.Uint8
}
// Extension represents an extension in a message.
type Extension struct {
// When an extension is stored in a message using SetExtension
// only desc and value are set. When the message is marshaled
// enc will be set to the encoded form of the message.
//
// When a message is unmarshaled and contains extensions, each
// extension will have only enc set. When such an extension is
// accessed using GetExtension (or GetExtensions) desc and value
// will be set.
desc *ExtensionDesc
// value is a concrete value for the extension field. Let the type of
// desc.ExtensionType be the "API type" and the type of Extension.value
// be the "storage type". The API type and storage type are the same except:
// * For scalars (except []byte), the API type uses *T,
// while the storage type uses T.
// * For repeated fields, the API type uses []T, while the storage type
// uses *[]T.
//
// The reason for the divergence is so that the storage type more naturally
// matches what is expected of when retrieving the values through the
// protobuf reflection APIs.
//
// The value may only be populated if desc is also populated.
value interface{}
// enc is the raw bytes for the extension field.
enc []byte
}
// SetRawExtension is for testing only.
func SetRawExtension(base Message, id int32, b []byte) {
epb, err := extendable(base)
if err != nil {
return
}
extmap := epb.extensionsWrite()
extmap[id] = Extension{enc: b}
}
// isExtensionField returns true iff the given field number is in an extension range.
func isExtensionField(pb extendableProto, field int32) bool {
for _, er := range pb.ExtensionRangeArray() {
if er.Start <= field && field <= er.End {
return true
}
}
return false
}
// checkExtensionTypes checks that the given extension is valid for pb.
func checkExtensionTypes(pb extendableProto, extension *ExtensionDesc) error {
var pbi interface{} = pb
// Check the extended type.
if ea, ok := pbi.(extensionAdapter); ok {
pbi = ea.extendableProtoV1
}
if a, b := reflect.TypeOf(pbi), reflect.TypeOf(extension.ExtendedType); a != b {
return fmt.Errorf("proto: bad extended type; %v does not extend %v", b, a)
}
// Check the range.
if !isExtensionField(pb, extension.Field) {
return errors.New("proto: bad extension number; not in declared ranges")
}
return nil
}
// extPropKey is sufficient to uniquely identify an extension.
type extPropKey struct {
base reflect.Type
field int32
}
var extProp = struct {
sync.RWMutex
m map[extPropKey]*Properties
}{
m: make(map[extPropKey]*Properties),
}
func extensionProperties(ed *ExtensionDesc) *Properties {
key := extPropKey{base: reflect.TypeOf(ed.ExtendedType), field: ed.Field}
extProp.RLock()
if prop, ok := extProp.m[key]; ok {
extProp.RUnlock()
return prop
}
extProp.RUnlock()
extProp.Lock()
defer extProp.Unlock()
// Check again.
if prop, ok := extProp.m[key]; ok {
return prop
}
prop := new(Properties)
prop.Init(reflect.TypeOf(ed.ExtensionType), "unknown_name", ed.Tag, nil)
extProp.m[key] = prop
return prop
}
// HasExtension returns whether the given extension is present in pb.
func HasExtension(pb Message, extension *ExtensionDesc) bool {
// TODO: Check types, field numbers, etc.?
epb, err := extendable(pb)
if err != nil {
return false
}
extmap, mu := epb.extensionsRead()
if extmap == nil {
return false
}
mu.Lock()
_, ok := extmap[extension.Field]
mu.Unlock()
return ok
}
// ClearExtension removes the given extension from pb.
func ClearExtension(pb Message, extension *ExtensionDesc) {
epb, err := extendable(pb)
if err != nil {
return
}
// TODO: Check types, field numbers, etc.?
extmap := epb.extensionsWrite()
delete(extmap, extension.Field)
}
// GetExtension retrieves a proto2 extended field from pb.
//
// If the descriptor is type complete (i.e., ExtensionDesc.ExtensionType is non-nil),
// then GetExtension parses the encoded field and returns a Go value of the specified type.
// If the field is not present, then the default value is returned (if one is specified),
// otherwise ErrMissingExtension is reported.
//
// If the descriptor is not type complete (i.e., ExtensionDesc.ExtensionType is nil),
// then GetExtension returns the raw encoded bytes of the field extension.
func GetExtension(pb Message, extension *ExtensionDesc) (interface{}, error) {
epb, err := extendable(pb)
if err != nil {
return nil, err
}
if extension.ExtendedType != nil {
// can only check type if this is a complete descriptor
if err := checkExtensionTypes(epb, extension); err != nil {
return nil, err
}
}
emap, mu := epb.extensionsRead()
if emap == nil {
return defaultExtensionValue(extension)
}
mu.Lock()
defer mu.Unlock()
e, ok := emap[extension.Field]
if !ok {
// defaultExtensionValue returns the default value or
// ErrMissingExtension if there is no default.
return defaultExtensionValue(extension)
}
if e.value != nil {
// Already decoded. Check the descriptor, though.
if e.desc != extension {
// This shouldn't happen. If it does, it means that
// GetExtension was called twice with two different
// descriptors with the same field number.
return nil, errors.New("proto: descriptor conflict")
}
return extensionAsLegacyType(e.value), nil
}
if extension.ExtensionType == nil {
// incomplete descriptor
return e.enc, nil
}
v, err := decodeExtension(e.enc, extension)
if err != nil {
return nil, err
}
// Remember the decoded version and drop the encoded version.
// That way it is safe to mutate what we return.
e.value = extensionAsStorageType(v)
e.desc = extension
e.enc = nil
emap[extension.Field] = e
return extensionAsLegacyType(e.value), nil
}
// defaultExtensionValue returns the default value for extension.
// If no default for an extension is defined ErrMissingExtension is returned.
func defaultExtensionValue(extension *ExtensionDesc) (interface{}, error) {
if extension.ExtensionType == nil {
// incomplete descriptor, so no default
return nil, ErrMissingExtension
}
t := reflect.TypeOf(extension.ExtensionType)
props := extensionProperties(extension)
sf, _, err := fieldDefault(t, props)
if err != nil {
return nil, err
}
if sf == nil || sf.value == nil {
// There is no default value.
return nil, ErrMissingExtension
}
if t.Kind() != reflect.Ptr {
// We do not need to return a Ptr, we can directly return sf.value.
return sf.value, nil
}
// We need to return an interface{} that is a pointer to sf.value.
value := reflect.New(t).Elem()
value.Set(reflect.New(value.Type().Elem()))
if sf.kind == reflect.Int32 {
// We may have an int32 or an enum, but the underlying data is int32.
// Since we can't set an int32 into a non int32 reflect.value directly
// set it as a int32.
value.Elem().SetInt(int64(sf.value.(int32)))
} else {
value.Elem().Set(reflect.ValueOf(sf.value))
}
return value.Interface(), nil
}
// decodeExtension decodes an extension encoded in b.
func decodeExtension(b []byte, extension *ExtensionDesc) (interface{}, error) {
t := reflect.TypeOf(extension.ExtensionType)
unmarshal := typeUnmarshaler(t, extension.Tag)
// t is a pointer to a struct, pointer to basic type or a slice.
// Allocate space to store the pointer/slice.
value := reflect.New(t).Elem()
var err error
for {
x, n := decodeVarint(b)
if n == 0 {
return nil, io.ErrUnexpectedEOF
}
b = b[n:]
wire := int(x) & 7
b, err = unmarshal(b, valToPointer(value.Addr()), wire)
if err != nil {
return nil, err
}
if len(b) == 0 {
break
}
}
return value.Interface(), nil
}
// GetExtensions returns a slice of the extensions present in pb that are also listed in es.
// The returned slice has the same length as es; missing extensions will appear as nil elements.
func GetExtensions(pb Message, es []*ExtensionDesc) (extensions []interface{}, err error) {
epb, err := extendable(pb)
if err != nil {
return nil, err
}
extensions = make([]interface{}, len(es))
for i, e := range es {
extensions[i], err = GetExtension(epb, e)
if err == ErrMissingExtension {
err = nil
}
if err != nil {
return
}
}
return
}
// ExtensionDescs returns a new slice containing pb's extension descriptors, in undefined order.
// For non-registered extensions, ExtensionDescs returns an incomplete descriptor containing
// just the Field field, which defines the extension's field number.
func ExtensionDescs(pb Message) ([]*ExtensionDesc, error) {
epb, err := extendable(pb)
if err != nil {
return nil, err
}
registeredExtensions := RegisteredExtensions(pb)
emap, mu := epb.extensionsRead()
if emap == nil {
return nil, nil
}
mu.Lock()
defer mu.Unlock()
extensions := make([]*ExtensionDesc, 0, len(emap))
for extid, e := range emap {
desc := e.desc
if desc == nil {
desc = registeredExtensions[extid]
if desc == nil {
desc = &ExtensionDesc{Field: extid}
}
}
extensions = append(extensions, desc)
}
return extensions, nil
}
// SetExtension sets the specified extension of pb to the specified value.
func SetExtension(pb Message, extension *ExtensionDesc, value interface{}) error {
epb, err := extendable(pb)
if err != nil {
return err
}
if err := checkExtensionTypes(epb, extension); err != nil {
return err
}
typ := reflect.TypeOf(extension.ExtensionType)
if typ != reflect.TypeOf(value) {
return fmt.Errorf("proto: bad extension value type. got: %T, want: %T", value, extension.ExtensionType)
}
// nil extension values need to be caught early, because the
// encoder can't distinguish an ErrNil due to a nil extension
// from an ErrNil due to a missing field. Extensions are
// always optional, so the encoder would just swallow the error
// and drop all the extensions from the encoded message.
if reflect.ValueOf(value).IsNil() {
return fmt.Errorf("proto: SetExtension called with nil value of type %T", value)
}
extmap := epb.extensionsWrite()
extmap[extension.Field] = Extension{desc: extension, value: extensionAsStorageType(value)}
return nil
}
// ClearAllExtensions clears all extensions from pb.
func ClearAllExtensions(pb Message) {
epb, err := extendable(pb)
if err != nil {
return
}
m := epb.extensionsWrite()
for k := range m {
delete(m, k)
}
}
// A global registry of extensions.
// The generated code will register the generated descriptors by calling RegisterExtension.
var extensionMaps = make(map[reflect.Type]map[int32]*ExtensionDesc)
// RegisterExtension is called from the generated code.
func RegisterExtension(desc *ExtensionDesc) {
st := reflect.TypeOf(desc.ExtendedType).Elem()
m := extensionMaps[st]
if m == nil {
m = make(map[int32]*ExtensionDesc)
extensionMaps[st] = m
}
if _, ok := m[desc.Field]; ok {
panic("proto: duplicate extension registered: " + st.String() + " " + strconv.Itoa(int(desc.Field)))
}
m[desc.Field] = desc
}
// RegisteredExtensions returns a map of the registered extensions of a
// protocol buffer struct, indexed by the extension number.
// The argument pb should be a nil pointer to the struct type.
func RegisteredExtensions(pb Message) map[int32]*ExtensionDesc {
return extensionMaps[reflect.TypeOf(pb).Elem()]
}
// extensionAsLegacyType converts an value in the storage type as the API type.
// See Extension.value.
func extensionAsLegacyType(v interface{}) interface{} {
switch rv := reflect.ValueOf(v); rv.Kind() {
case reflect.Bool, reflect.Int32, reflect.Int64, reflect.Uint32, reflect.Uint64, reflect.Float32, reflect.Float64, reflect.String:
// Represent primitive types as a pointer to the value.
rv2 := reflect.New(rv.Type())
rv2.Elem().Set(rv)
v = rv2.Interface()
case reflect.Ptr:
// Represent slice types as the value itself.
switch rv.Type().Elem().Kind() {
case reflect.Slice:
if rv.IsNil() {
v = reflect.Zero(rv.Type().Elem()).Interface()
} else {
v = rv.Elem().Interface()
}
}
}
return v
}
// extensionAsStorageType converts an value in the API type as the storage type.
// See Extension.value.
func extensionAsStorageType(v interface{}) interface{} {
switch rv := reflect.ValueOf(v); rv.Kind() {
case reflect.Ptr:
// Represent slice types as the value itself.
switch rv.Type().Elem().Kind() {
case reflect.Bool, reflect.Int32, reflect.Int64, reflect.Uint32, reflect.Uint64, reflect.Float32, reflect.Float64, reflect.String:
if rv.IsNil() {
v = reflect.Zero(rv.Type().Elem()).Interface()
} else {
v = rv.Elem().Interface()
}
}
case reflect.Slice:
// Represent slice types as a pointer to the value.
if rv.Type().Elem().Kind() != reflect.Uint8 {
rv2 := reflect.New(rv.Type())
rv2.Elem().Set(rv)
v = rv2.Interface()
}
}
return v
}

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// Go support for Protocol Buffers - Google's data interchange format
//
// Copyright 2010 The Go Authors. All rights reserved.
// https://github.com/golang/protobuf
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
/*
Package proto converts data structures to and from the wire format of
protocol buffers. It works in concert with the Go source code generated
for .proto files by the protocol compiler.
A summary of the properties of the protocol buffer interface
for a protocol buffer variable v:
- Names are turned from camel_case to CamelCase for export.
- There are no methods on v to set fields; just treat
them as structure fields.
- There are getters that return a field's value if set,
and return the field's default value if unset.
The getters work even if the receiver is a nil message.
- The zero value for a struct is its correct initialization state.
All desired fields must be set before marshaling.
- A Reset() method will restore a protobuf struct to its zero state.
- Non-repeated fields are pointers to the values; nil means unset.
That is, optional or required field int32 f becomes F *int32.
- Repeated fields are slices.
- Helper functions are available to aid the setting of fields.
msg.Foo = proto.String("hello") // set field
- Constants are defined to hold the default values of all fields that
have them. They have the form Default_StructName_FieldName.
Because the getter methods handle defaulted values,
direct use of these constants should be rare.
- Enums are given type names and maps from names to values.
Enum values are prefixed by the enclosing message's name, or by the
enum's type name if it is a top-level enum. Enum types have a String
method, and a Enum method to assist in message construction.
- Nested messages, groups and enums have type names prefixed with the name of
the surrounding message type.
- Extensions are given descriptor names that start with E_,
followed by an underscore-delimited list of the nested messages
that contain it (if any) followed by the CamelCased name of the
extension field itself. HasExtension, ClearExtension, GetExtension
and SetExtension are functions for manipulating extensions.
- Oneof field sets are given a single field in their message,
with distinguished wrapper types for each possible field value.
- Marshal and Unmarshal are functions to encode and decode the wire format.
When the .proto file specifies `syntax="proto3"`, there are some differences:
- Non-repeated fields of non-message type are values instead of pointers.
- Enum types do not get an Enum method.
The simplest way to describe this is to see an example.
Given file test.proto, containing
package example;
enum FOO { X = 17; }
message Test {
required string label = 1;
optional int32 type = 2 [default=77];
repeated int64 reps = 3;
optional group OptionalGroup = 4 {
required string RequiredField = 5;
}
oneof union {
int32 number = 6;
string name = 7;
}
}
The resulting file, test.pb.go, is:
package example
import proto "github.com/golang/protobuf/proto"
import math "math"
type FOO int32
const (
FOO_X FOO = 17
)
var FOO_name = map[int32]string{
17: "X",
}
var FOO_value = map[string]int32{
"X": 17,
}
func (x FOO) Enum() *FOO {
p := new(FOO)
*p = x
return p
}
func (x FOO) String() string {
return proto.EnumName(FOO_name, int32(x))
}
func (x *FOO) UnmarshalJSON(data []byte) error {
value, err := proto.UnmarshalJSONEnum(FOO_value, data)
if err != nil {
return err
}
*x = FOO(value)
return nil
}
type Test struct {
Label *string `protobuf:"bytes,1,req,name=label" json:"label,omitempty"`
Type *int32 `protobuf:"varint,2,opt,name=type,def=77" json:"type,omitempty"`
Reps []int64 `protobuf:"varint,3,rep,name=reps" json:"reps,omitempty"`
Optionalgroup *Test_OptionalGroup `protobuf:"group,4,opt,name=OptionalGroup" json:"optionalgroup,omitempty"`
// Types that are valid to be assigned to Union:
// *Test_Number
// *Test_Name
Union isTest_Union `protobuf_oneof:"union"`
XXX_unrecognized []byte `json:"-"`
}
func (m *Test) Reset() { *m = Test{} }
func (m *Test) String() string { return proto.CompactTextString(m) }
func (*Test) ProtoMessage() {}
type isTest_Union interface {
isTest_Union()
}
type Test_Number struct {
Number int32 `protobuf:"varint,6,opt,name=number"`
}
type Test_Name struct {
Name string `protobuf:"bytes,7,opt,name=name"`
}
func (*Test_Number) isTest_Union() {}
func (*Test_Name) isTest_Union() {}
func (m *Test) GetUnion() isTest_Union {
if m != nil {
return m.Union
}
return nil
}
const Default_Test_Type int32 = 77
func (m *Test) GetLabel() string {
if m != nil && m.Label != nil {
return *m.Label
}
return ""
}
func (m *Test) GetType() int32 {
if m != nil && m.Type != nil {
return *m.Type
}
return Default_Test_Type
}
func (m *Test) GetOptionalgroup() *Test_OptionalGroup {
if m != nil {
return m.Optionalgroup
}
return nil
}
type Test_OptionalGroup struct {
RequiredField *string `protobuf:"bytes,5,req" json:"RequiredField,omitempty"`
}
func (m *Test_OptionalGroup) Reset() { *m = Test_OptionalGroup{} }
func (m *Test_OptionalGroup) String() string { return proto.CompactTextString(m) }
func (m *Test_OptionalGroup) GetRequiredField() string {
if m != nil && m.RequiredField != nil {
return *m.RequiredField
}
return ""
}
func (m *Test) GetNumber() int32 {
if x, ok := m.GetUnion().(*Test_Number); ok {
return x.Number
}
return 0
}
func (m *Test) GetName() string {
if x, ok := m.GetUnion().(*Test_Name); ok {
return x.Name
}
return ""
}
func init() {
proto.RegisterEnum("example.FOO", FOO_name, FOO_value)
}
To create and play with a Test object:
package main
import (
"log"
"github.com/golang/protobuf/proto"
pb "./example.pb"
)
func main() {
test := &pb.Test{
Label: proto.String("hello"),
Type: proto.Int32(17),
Reps: []int64{1, 2, 3},
Optionalgroup: &pb.Test_OptionalGroup{
RequiredField: proto.String("good bye"),
},
Union: &pb.Test_Name{"fred"},
}
data, err := proto.Marshal(test)
if err != nil {
log.Fatal("marshaling error: ", err)
}
newTest := &pb.Test{}
err = proto.Unmarshal(data, newTest)
if err != nil {
log.Fatal("unmarshaling error: ", err)
}
// Now test and newTest contain the same data.
if test.GetLabel() != newTest.GetLabel() {
log.Fatalf("data mismatch %q != %q", test.GetLabel(), newTest.GetLabel())
}
// Use a type switch to determine which oneof was set.
switch u := test.Union.(type) {
case *pb.Test_Number: // u.Number contains the number.
case *pb.Test_Name: // u.Name contains the string.
}
// etc.
}
*/
package proto
import (
"encoding/json"
"fmt"
"log"
"reflect"
"sort"
"strconv"
"sync"
)
// RequiredNotSetError is an error type returned by either Marshal or Unmarshal.
// Marshal reports this when a required field is not initialized.
// Unmarshal reports this when a required field is missing from the wire data.
type RequiredNotSetError struct{ field string }
func (e *RequiredNotSetError) Error() string {
if e.field == "" {
return fmt.Sprintf("proto: required field not set")
}
return fmt.Sprintf("proto: required field %q not set", e.field)
}
func (e *RequiredNotSetError) RequiredNotSet() bool {
return true
}
type invalidUTF8Error struct{ field string }
func (e *invalidUTF8Error) Error() string {
if e.field == "" {
return "proto: invalid UTF-8 detected"
}
return fmt.Sprintf("proto: field %q contains invalid UTF-8", e.field)
}
func (e *invalidUTF8Error) InvalidUTF8() bool {
return true
}
// errInvalidUTF8 is a sentinel error to identify fields with invalid UTF-8.
// This error should not be exposed to the external API as such errors should
// be recreated with the field information.
var errInvalidUTF8 = &invalidUTF8Error{}
// isNonFatal reports whether the error is either a RequiredNotSet error
// or a InvalidUTF8 error.
func isNonFatal(err error) bool {
if re, ok := err.(interface{ RequiredNotSet() bool }); ok && re.RequiredNotSet() {
return true
}
if re, ok := err.(interface{ InvalidUTF8() bool }); ok && re.InvalidUTF8() {
return true
}
return false
}
type nonFatal struct{ E error }
// Merge merges err into nf and reports whether it was successful.
// Otherwise it returns false for any fatal non-nil errors.
func (nf *nonFatal) Merge(err error) (ok bool) {
if err == nil {
return true // not an error
}
if !isNonFatal(err) {
return false // fatal error
}
if nf.E == nil {
nf.E = err // store first instance of non-fatal error
}
return true
}
// Message is implemented by generated protocol buffer messages.
type Message interface {
Reset()
String() string
ProtoMessage()
}
// A Buffer is a buffer manager for marshaling and unmarshaling
// protocol buffers. It may be reused between invocations to
// reduce memory usage. It is not necessary to use a Buffer;
// the global functions Marshal and Unmarshal create a
// temporary Buffer and are fine for most applications.
type Buffer struct {
buf []byte // encode/decode byte stream
index int // read point
deterministic bool
}
// NewBuffer allocates a new Buffer and initializes its internal data to
// the contents of the argument slice.
func NewBuffer(e []byte) *Buffer {
return &Buffer{buf: e}
}
// Reset resets the Buffer, ready for marshaling a new protocol buffer.
func (p *Buffer) Reset() {
p.buf = p.buf[0:0] // for reading/writing
p.index = 0 // for reading
}
// SetBuf replaces the internal buffer with the slice,
// ready for unmarshaling the contents of the slice.
func (p *Buffer) SetBuf(s []byte) {
p.buf = s
p.index = 0
}
// Bytes returns the contents of the Buffer.
func (p *Buffer) Bytes() []byte { return p.buf }
// SetDeterministic sets whether to use deterministic serialization.
//
// Deterministic serialization guarantees that for a given binary, equal
// messages will always be serialized to the same bytes. This implies:
//
// - Repeated serialization of a message will return the same bytes.
// - Different processes of the same binary (which may be executing on
// different machines) will serialize equal messages to the same bytes.
//
// Note that the deterministic serialization is NOT canonical across
// languages. It is not guaranteed to remain stable over time. It is unstable
// across different builds with schema changes due to unknown fields.
// Users who need canonical serialization (e.g., persistent storage in a
// canonical form, fingerprinting, etc.) should define their own
// canonicalization specification and implement their own serializer rather
// than relying on this API.
//
// If deterministic serialization is requested, map entries will be sorted
// by keys in lexographical order. This is an implementation detail and
// subject to change.
func (p *Buffer) SetDeterministic(deterministic bool) {
p.deterministic = deterministic
}
/*
* Helper routines for simplifying the creation of optional fields of basic type.
*/
// Bool is a helper routine that allocates a new bool value
// to store v and returns a pointer to it.
func Bool(v bool) *bool {
return &v
}
// Int32 is a helper routine that allocates a new int32 value
// to store v and returns a pointer to it.
func Int32(v int32) *int32 {
return &v
}
// Int is a helper routine that allocates a new int32 value
// to store v and returns a pointer to it, but unlike Int32
// its argument value is an int.
func Int(v int) *int32 {
p := new(int32)
*p = int32(v)
return p
}
// Int64 is a helper routine that allocates a new int64 value
// to store v and returns a pointer to it.
func Int64(v int64) *int64 {
return &v
}
// Float32 is a helper routine that allocates a new float32 value
// to store v and returns a pointer to it.
func Float32(v float32) *float32 {
return &v
}
// Float64 is a helper routine that allocates a new float64 value
// to store v and returns a pointer to it.
func Float64(v float64) *float64 {
return &v
}
// Uint32 is a helper routine that allocates a new uint32 value
// to store v and returns a pointer to it.
func Uint32(v uint32) *uint32 {
return &v
}
// Uint64 is a helper routine that allocates a new uint64 value
// to store v and returns a pointer to it.
func Uint64(v uint64) *uint64 {
return &v
}
// String is a helper routine that allocates a new string value
// to store v and returns a pointer to it.
func String(v string) *string {
return &v
}
// EnumName is a helper function to simplify printing protocol buffer enums
// by name. Given an enum map and a value, it returns a useful string.
func EnumName(m map[int32]string, v int32) string {
s, ok := m[v]
if ok {
return s
}
return strconv.Itoa(int(v))
}
// UnmarshalJSONEnum is a helper function to simplify recovering enum int values
// from their JSON-encoded representation. Given a map from the enum's symbolic
// names to its int values, and a byte buffer containing the JSON-encoded
// value, it returns an int32 that can be cast to the enum type by the caller.
//
// The function can deal with both JSON representations, numeric and symbolic.
func UnmarshalJSONEnum(m map[string]int32, data []byte, enumName string) (int32, error) {
if data[0] == '"' {
// New style: enums are strings.
var repr string
if err := json.Unmarshal(data, &repr); err != nil {
return -1, err
}
val, ok := m[repr]
if !ok {
return 0, fmt.Errorf("unrecognized enum %s value %q", enumName, repr)
}
return val, nil
}
// Old style: enums are ints.
var val int32
if err := json.Unmarshal(data, &val); err != nil {
return 0, fmt.Errorf("cannot unmarshal %#q into enum %s", data, enumName)
}
return val, nil
}
// DebugPrint dumps the encoded data in b in a debugging format with a header
// including the string s. Used in testing but made available for general debugging.
func (p *Buffer) DebugPrint(s string, b []byte) {
var u uint64
obuf := p.buf
index := p.index
p.buf = b
p.index = 0
depth := 0
fmt.Printf("\n--- %s ---\n", s)
out:
for {
for i := 0; i < depth; i++ {
fmt.Print(" ")
}
index := p.index
if index == len(p.buf) {
break
}
op, err := p.DecodeVarint()
if err != nil {
fmt.Printf("%3d: fetching op err %v\n", index, err)
break out
}
tag := op >> 3
wire := op & 7
switch wire {
default:
fmt.Printf("%3d: t=%3d unknown wire=%d\n",
index, tag, wire)
break out
case WireBytes:
var r []byte
r, err = p.DecodeRawBytes(false)
if err != nil {
break out
}
fmt.Printf("%3d: t=%3d bytes [%d]", index, tag, len(r))
if len(r) <= 6 {
for i := 0; i < len(r); i++ {
fmt.Printf(" %.2x", r[i])
}
} else {
for i := 0; i < 3; i++ {
fmt.Printf(" %.2x", r[i])
}
fmt.Printf(" ..")
for i := len(r) - 3; i < len(r); i++ {
fmt.Printf(" %.2x", r[i])
}
}
fmt.Printf("\n")
case WireFixed32:
u, err = p.DecodeFixed32()
if err != nil {
fmt.Printf("%3d: t=%3d fix32 err %v\n", index, tag, err)
break out
}
fmt.Printf("%3d: t=%3d fix32 %d\n", index, tag, u)
case WireFixed64:
u, err = p.DecodeFixed64()
if err != nil {
fmt.Printf("%3d: t=%3d fix64 err %v\n", index, tag, err)
break out
}
fmt.Printf("%3d: t=%3d fix64 %d\n", index, tag, u)
case WireVarint:
u, err = p.DecodeVarint()
if err != nil {
fmt.Printf("%3d: t=%3d varint err %v\n", index, tag, err)
break out
}
fmt.Printf("%3d: t=%3d varint %d\n", index, tag, u)
case WireStartGroup:
fmt.Printf("%3d: t=%3d start\n", index, tag)
depth++
case WireEndGroup:
depth--
fmt.Printf("%3d: t=%3d end\n", index, tag)
}
}
if depth != 0 {
fmt.Printf("%3d: start-end not balanced %d\n", p.index, depth)
}
fmt.Printf("\n")
p.buf = obuf
p.index = index
}
// SetDefaults sets unset protocol buffer fields to their default values.
// It only modifies fields that are both unset and have defined defaults.
// It recursively sets default values in any non-nil sub-messages.
func SetDefaults(pb Message) {
setDefaults(reflect.ValueOf(pb), true, false)
}
// v is a pointer to a struct.
func setDefaults(v reflect.Value, recur, zeros bool) {
v = v.Elem()
defaultMu.RLock()
dm, ok := defaults[v.Type()]
defaultMu.RUnlock()
if !ok {
dm = buildDefaultMessage(v.Type())
defaultMu.Lock()
defaults[v.Type()] = dm
defaultMu.Unlock()
}
for _, sf := range dm.scalars {
f := v.Field(sf.index)
if !f.IsNil() {
// field already set
continue
}
dv := sf.value
if dv == nil && !zeros {
// no explicit default, and don't want to set zeros
continue
}
fptr := f.Addr().Interface() // **T
// TODO: Consider batching the allocations we do here.
switch sf.kind {
case reflect.Bool:
b := new(bool)
if dv != nil {
*b = dv.(bool)
}
*(fptr.(**bool)) = b
case reflect.Float32:
f := new(float32)
if dv != nil {
*f = dv.(float32)
}
*(fptr.(**float32)) = f
case reflect.Float64:
f := new(float64)
if dv != nil {
*f = dv.(float64)
}
*(fptr.(**float64)) = f
case reflect.Int32:
// might be an enum
if ft := f.Type(); ft != int32PtrType {
// enum
f.Set(reflect.New(ft.Elem()))
if dv != nil {
f.Elem().SetInt(int64(dv.(int32)))
}
} else {
// int32 field
i := new(int32)
if dv != nil {
*i = dv.(int32)
}
*(fptr.(**int32)) = i
}
case reflect.Int64:
i := new(int64)
if dv != nil {
*i = dv.(int64)
}
*(fptr.(**int64)) = i
case reflect.String:
s := new(string)
if dv != nil {
*s = dv.(string)
}
*(fptr.(**string)) = s
case reflect.Uint8:
// exceptional case: []byte
var b []byte
if dv != nil {
db := dv.([]byte)
b = make([]byte, len(db))
copy(b, db)
} else {
b = []byte{}
}
*(fptr.(*[]byte)) = b
case reflect.Uint32:
u := new(uint32)
if dv != nil {
*u = dv.(uint32)
}
*(fptr.(**uint32)) = u
case reflect.Uint64:
u := new(uint64)
if dv != nil {
*u = dv.(uint64)
}
*(fptr.(**uint64)) = u
default:
log.Printf("proto: can't set default for field %v (sf.kind=%v)", f, sf.kind)
}
}
for _, ni := range dm.nested {
f := v.Field(ni)
// f is *T or []*T or map[T]*T
switch f.Kind() {
case reflect.Ptr:
if f.IsNil() {
continue
}
setDefaults(f, recur, zeros)
case reflect.Slice:
for i := 0; i < f.Len(); i++ {
e := f.Index(i)
if e.IsNil() {
continue
}
setDefaults(e, recur, zeros)
}
case reflect.Map:
for _, k := range f.MapKeys() {
e := f.MapIndex(k)
if e.IsNil() {
continue
}
setDefaults(e, recur, zeros)
}
}
}
}
var (
// defaults maps a protocol buffer struct type to a slice of the fields,
// with its scalar fields set to their proto-declared non-zero default values.
defaultMu sync.RWMutex
defaults = make(map[reflect.Type]defaultMessage)
int32PtrType = reflect.TypeOf((*int32)(nil))
)
// defaultMessage represents information about the default values of a message.
type defaultMessage struct {
scalars []scalarField
nested []int // struct field index of nested messages
}
type scalarField struct {
index int // struct field index
kind reflect.Kind // element type (the T in *T or []T)
value interface{} // the proto-declared default value, or nil
}
// t is a struct type.
func buildDefaultMessage(t reflect.Type) (dm defaultMessage) {
sprop := GetProperties(t)
for _, prop := range sprop.Prop {
fi, ok := sprop.decoderTags.get(prop.Tag)
if !ok {
// XXX_unrecognized
continue
}
ft := t.Field(fi).Type
sf, nested, err := fieldDefault(ft, prop)
switch {
case err != nil:
log.Print(err)
case nested:
dm.nested = append(dm.nested, fi)
case sf != nil:
sf.index = fi
dm.scalars = append(dm.scalars, *sf)
}
}
return dm
}
// fieldDefault returns the scalarField for field type ft.
// sf will be nil if the field can not have a default.
// nestedMessage will be true if this is a nested message.
// Note that sf.index is not set on return.
func fieldDefault(ft reflect.Type, prop *Properties) (sf *scalarField, nestedMessage bool, err error) {
var canHaveDefault bool
switch ft.Kind() {
case reflect.Ptr:
if ft.Elem().Kind() == reflect.Struct {
nestedMessage = true
} else {
canHaveDefault = true // proto2 scalar field
}
case reflect.Slice:
switch ft.Elem().Kind() {
case reflect.Ptr:
nestedMessage = true // repeated message
case reflect.Uint8:
canHaveDefault = true // bytes field
}
case reflect.Map:
if ft.Elem().Kind() == reflect.Ptr {
nestedMessage = true // map with message values
}
}
if !canHaveDefault {
if nestedMessage {
return nil, true, nil
}
return nil, false, nil
}
// We now know that ft is a pointer or slice.
sf = &scalarField{kind: ft.Elem().Kind()}
// scalar fields without defaults
if !prop.HasDefault {
return sf, false, nil
}
// a scalar field: either *T or []byte
switch ft.Elem().Kind() {
case reflect.Bool:
x, err := strconv.ParseBool(prop.Default)
if err != nil {
return nil, false, fmt.Errorf("proto: bad default bool %q: %v", prop.Default, err)
}
sf.value = x
case reflect.Float32:
x, err := strconv.ParseFloat(prop.Default, 32)
if err != nil {
return nil, false, fmt.Errorf("proto: bad default float32 %q: %v", prop.Default, err)
}
sf.value = float32(x)
case reflect.Float64:
x, err := strconv.ParseFloat(prop.Default, 64)
if err != nil {
return nil, false, fmt.Errorf("proto: bad default float64 %q: %v", prop.Default, err)
}
sf.value = x
case reflect.Int32:
x, err := strconv.ParseInt(prop.Default, 10, 32)
if err != nil {
return nil, false, fmt.Errorf("proto: bad default int32 %q: %v", prop.Default, err)
}
sf.value = int32(x)
case reflect.Int64:
x, err := strconv.ParseInt(prop.Default, 10, 64)
if err != nil {
return nil, false, fmt.Errorf("proto: bad default int64 %q: %v", prop.Default, err)
}
sf.value = x
case reflect.String:
sf.value = prop.Default
case reflect.Uint8:
// []byte (not *uint8)
sf.value = []byte(prop.Default)
case reflect.Uint32:
x, err := strconv.ParseUint(prop.Default, 10, 32)
if err != nil {
return nil, false, fmt.Errorf("proto: bad default uint32 %q: %v", prop.Default, err)
}
sf.value = uint32(x)
case reflect.Uint64:
x, err := strconv.ParseUint(prop.Default, 10, 64)
if err != nil {
return nil, false, fmt.Errorf("proto: bad default uint64 %q: %v", prop.Default, err)
}
sf.value = x
default:
return nil, false, fmt.Errorf("proto: unhandled def kind %v", ft.Elem().Kind())
}
return sf, false, nil
}
// mapKeys returns a sort.Interface to be used for sorting the map keys.
// Map fields may have key types of non-float scalars, strings and enums.
func mapKeys(vs []reflect.Value) sort.Interface {
s := mapKeySorter{vs: vs}
// Type specialization per https://developers.google.com/protocol-buffers/docs/proto#maps.
if len(vs) == 0 {
return s
}
switch vs[0].Kind() {
case reflect.Int32, reflect.Int64:
s.less = func(a, b reflect.Value) bool { return a.Int() < b.Int() }
case reflect.Uint32, reflect.Uint64:
s.less = func(a, b reflect.Value) bool { return a.Uint() < b.Uint() }
case reflect.Bool:
s.less = func(a, b reflect.Value) bool { return !a.Bool() && b.Bool() } // false < true
case reflect.String:
s.less = func(a, b reflect.Value) bool { return a.String() < b.String() }
default:
panic(fmt.Sprintf("unsupported map key type: %v", vs[0].Kind()))
}
return s
}
type mapKeySorter struct {
vs []reflect.Value
less func(a, b reflect.Value) bool
}
func (s mapKeySorter) Len() int { return len(s.vs) }
func (s mapKeySorter) Swap(i, j int) { s.vs[i], s.vs[j] = s.vs[j], s.vs[i] }
func (s mapKeySorter) Less(i, j int) bool {
return s.less(s.vs[i], s.vs[j])
}
// isProto3Zero reports whether v is a zero proto3 value.
func isProto3Zero(v reflect.Value) bool {
switch v.Kind() {
case reflect.Bool:
return !v.Bool()
case reflect.Int32, reflect.Int64:
return v.Int() == 0
case reflect.Uint32, reflect.Uint64:
return v.Uint() == 0
case reflect.Float32, reflect.Float64:
return v.Float() == 0
case reflect.String:
return v.String() == ""
}
return false
}
const (
// ProtoPackageIsVersion3 is referenced from generated protocol buffer files
// to assert that that code is compatible with this version of the proto package.
ProtoPackageIsVersion3 = true
// ProtoPackageIsVersion2 is referenced from generated protocol buffer files
// to assert that that code is compatible with this version of the proto package.
ProtoPackageIsVersion2 = true
// ProtoPackageIsVersion1 is referenced from generated protocol buffer files
// to assert that that code is compatible with this version of the proto package.
ProtoPackageIsVersion1 = true
)
// InternalMessageInfo is a type used internally by generated .pb.go files.
// This type is not intended to be used by non-generated code.
// This type is not subject to any compatibility guarantee.
type InternalMessageInfo struct {
marshal *marshalInfo
unmarshal *unmarshalInfo
merge *mergeInfo
discard *discardInfo
}

181
vendor/github.com/golang/protobuf/proto/message_set.go generated vendored Normal file
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// Go support for Protocol Buffers - Google's data interchange format
//
// Copyright 2010 The Go Authors. All rights reserved.
// https://github.com/golang/protobuf
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
package proto
/*
* Support for message sets.
*/
import (
"errors"
)
// errNoMessageTypeID occurs when a protocol buffer does not have a message type ID.
// A message type ID is required for storing a protocol buffer in a message set.
var errNoMessageTypeID = errors.New("proto does not have a message type ID")
// The first two types (_MessageSet_Item and messageSet)
// model what the protocol compiler produces for the following protocol message:
// message MessageSet {
// repeated group Item = 1 {
// required int32 type_id = 2;
// required string message = 3;
// };
// }
// That is the MessageSet wire format. We can't use a proto to generate these
// because that would introduce a circular dependency between it and this package.
type _MessageSet_Item struct {
TypeId *int32 `protobuf:"varint,2,req,name=type_id"`
Message []byte `protobuf:"bytes,3,req,name=message"`
}
type messageSet struct {
Item []*_MessageSet_Item `protobuf:"group,1,rep"`
XXX_unrecognized []byte
// TODO: caching?
}
// Make sure messageSet is a Message.
var _ Message = (*messageSet)(nil)
// messageTypeIder is an interface satisfied by a protocol buffer type
// that may be stored in a MessageSet.
type messageTypeIder interface {
MessageTypeId() int32
}
func (ms *messageSet) find(pb Message) *_MessageSet_Item {
mti, ok := pb.(messageTypeIder)
if !ok {
return nil
}
id := mti.MessageTypeId()
for _, item := range ms.Item {
if *item.TypeId == id {
return item
}
}
return nil
}
func (ms *messageSet) Has(pb Message) bool {
return ms.find(pb) != nil
}
func (ms *messageSet) Unmarshal(pb Message) error {
if item := ms.find(pb); item != nil {
return Unmarshal(item.Message, pb)
}
if _, ok := pb.(messageTypeIder); !ok {
return errNoMessageTypeID
}
return nil // TODO: return error instead?
}
func (ms *messageSet) Marshal(pb Message) error {
msg, err := Marshal(pb)
if err != nil {
return err
}
if item := ms.find(pb); item != nil {
// reuse existing item
item.Message = msg
return nil
}
mti, ok := pb.(messageTypeIder)
if !ok {
return errNoMessageTypeID
}
mtid := mti.MessageTypeId()
ms.Item = append(ms.Item, &_MessageSet_Item{
TypeId: &mtid,
Message: msg,
})
return nil
}
func (ms *messageSet) Reset() { *ms = messageSet{} }
func (ms *messageSet) String() string { return CompactTextString(ms) }
func (*messageSet) ProtoMessage() {}
// Support for the message_set_wire_format message option.
func skipVarint(buf []byte) []byte {
i := 0
for ; buf[i]&0x80 != 0; i++ {
}
return buf[i+1:]
}
// unmarshalMessageSet decodes the extension map encoded in buf in the message set wire format.
// It is called by Unmarshal methods on protocol buffer messages with the message_set_wire_format option.
func unmarshalMessageSet(buf []byte, exts interface{}) error {
var m map[int32]Extension
switch exts := exts.(type) {
case *XXX_InternalExtensions:
m = exts.extensionsWrite()
case map[int32]Extension:
m = exts
default:
return errors.New("proto: not an extension map")
}
ms := new(messageSet)
if err := Unmarshal(buf, ms); err != nil {
return err
}
for _, item := range ms.Item {
id := *item.TypeId
msg := item.Message
// Restore wire type and field number varint, plus length varint.
// Be careful to preserve duplicate items.
b := EncodeVarint(uint64(id)<<3 | WireBytes)
if ext, ok := m[id]; ok {
// Existing data; rip off the tag and length varint
// so we join the new data correctly.
// We can assume that ext.enc is set because we are unmarshaling.
o := ext.enc[len(b):] // skip wire type and field number
_, n := DecodeVarint(o) // calculate length of length varint
o = o[n:] // skip length varint
msg = append(o, msg...) // join old data and new data
}
b = append(b, EncodeVarint(uint64(len(msg)))...)
b = append(b, msg...)
m[id] = Extension{enc: b}
}
return nil
}

360
vendor/github.com/golang/protobuf/proto/pointer_reflect.go generated vendored Normal file
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// Go support for Protocol Buffers - Google's data interchange format
//
// Copyright 2012 The Go Authors. All rights reserved.
// https://github.com/golang/protobuf
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// +build purego appengine js
// This file contains an implementation of proto field accesses using package reflect.
// It is slower than the code in pointer_unsafe.go but it avoids package unsafe and can
// be used on App Engine.
package proto
import (
"reflect"
"sync"
)
const unsafeAllowed = false
// A field identifies a field in a struct, accessible from a pointer.
// In this implementation, a field is identified by the sequence of field indices
// passed to reflect's FieldByIndex.
type field []int
// toField returns a field equivalent to the given reflect field.
func toField(f *reflect.StructField) field {
return f.Index
}
// invalidField is an invalid field identifier.
var invalidField = field(nil)
// zeroField is a noop when calling pointer.offset.
var zeroField = field([]int{})
// IsValid reports whether the field identifier is valid.
func (f field) IsValid() bool { return f != nil }
// The pointer type is for the table-driven decoder.
// The implementation here uses a reflect.Value of pointer type to
// create a generic pointer. In pointer_unsafe.go we use unsafe
// instead of reflect to implement the same (but faster) interface.
type pointer struct {
v reflect.Value
}
// toPointer converts an interface of pointer type to a pointer
// that points to the same target.
func toPointer(i *Message) pointer {
return pointer{v: reflect.ValueOf(*i)}
}
// toAddrPointer converts an interface to a pointer that points to
// the interface data.
func toAddrPointer(i *interface{}, isptr, deref bool) pointer {
v := reflect.ValueOf(*i)
u := reflect.New(v.Type())
u.Elem().Set(v)
if deref {
u = u.Elem()
}
return pointer{v: u}
}
// valToPointer converts v to a pointer. v must be of pointer type.
func valToPointer(v reflect.Value) pointer {
return pointer{v: v}
}
// offset converts from a pointer to a structure to a pointer to
// one of its fields.
func (p pointer) offset(f field) pointer {
return pointer{v: p.v.Elem().FieldByIndex(f).Addr()}
}
func (p pointer) isNil() bool {
return p.v.IsNil()
}
// grow updates the slice s in place to make it one element longer.
// s must be addressable.
// Returns the (addressable) new element.
func grow(s reflect.Value) reflect.Value {
n, m := s.Len(), s.Cap()
if n < m {
s.SetLen(n + 1)
} else {
s.Set(reflect.Append(s, reflect.Zero(s.Type().Elem())))
}
return s.Index(n)
}
func (p pointer) toInt64() *int64 {
return p.v.Interface().(*int64)
}
func (p pointer) toInt64Ptr() **int64 {
return p.v.Interface().(**int64)
}
func (p pointer) toInt64Slice() *[]int64 {
return p.v.Interface().(*[]int64)
}
var int32ptr = reflect.TypeOf((*int32)(nil))
func (p pointer) toInt32() *int32 {
return p.v.Convert(int32ptr).Interface().(*int32)
}
// The toInt32Ptr/Slice methods don't work because of enums.
// Instead, we must use set/get methods for the int32ptr/slice case.
/*
func (p pointer) toInt32Ptr() **int32 {
return p.v.Interface().(**int32)
}
func (p pointer) toInt32Slice() *[]int32 {
return p.v.Interface().(*[]int32)
}
*/
func (p pointer) getInt32Ptr() *int32 {
if p.v.Type().Elem().Elem() == reflect.TypeOf(int32(0)) {
// raw int32 type
return p.v.Elem().Interface().(*int32)
}
// an enum
return p.v.Elem().Convert(int32PtrType).Interface().(*int32)
}
func (p pointer) setInt32Ptr(v int32) {
// Allocate value in a *int32. Possibly convert that to a *enum.
// Then assign it to a **int32 or **enum.
// Note: we can convert *int32 to *enum, but we can't convert
// **int32 to **enum!
p.v.Elem().Set(reflect.ValueOf(&v).Convert(p.v.Type().Elem()))
}
// getInt32Slice copies []int32 from p as a new slice.
// This behavior differs from the implementation in pointer_unsafe.go.
func (p pointer) getInt32Slice() []int32 {
if p.v.Type().Elem().Elem() == reflect.TypeOf(int32(0)) {
// raw int32 type
return p.v.Elem().Interface().([]int32)
}
// an enum
// Allocate a []int32, then assign []enum's values into it.
// Note: we can't convert []enum to []int32.
slice := p.v.Elem()
s := make([]int32, slice.Len())
for i := 0; i < slice.Len(); i++ {
s[i] = int32(slice.Index(i).Int())
}
return s
}
// setInt32Slice copies []int32 into p as a new slice.
// This behavior differs from the implementation in pointer_unsafe.go.
func (p pointer) setInt32Slice(v []int32) {
if p.v.Type().Elem().Elem() == reflect.TypeOf(int32(0)) {
// raw int32 type
p.v.Elem().Set(reflect.ValueOf(v))
return
}
// an enum
// Allocate a []enum, then assign []int32's values into it.
// Note: we can't convert []enum to []int32.
slice := reflect.MakeSlice(p.v.Type().Elem(), len(v), cap(v))
for i, x := range v {
slice.Index(i).SetInt(int64(x))
}
p.v.Elem().Set(slice)
}
func (p pointer) appendInt32Slice(v int32) {
grow(p.v.Elem()).SetInt(int64(v))
}
func (p pointer) toUint64() *uint64 {
return p.v.Interface().(*uint64)
}
func (p pointer) toUint64Ptr() **uint64 {
return p.v.Interface().(**uint64)
}
func (p pointer) toUint64Slice() *[]uint64 {
return p.v.Interface().(*[]uint64)
}
func (p pointer) toUint32() *uint32 {
return p.v.Interface().(*uint32)
}
func (p pointer) toUint32Ptr() **uint32 {
return p.v.Interface().(**uint32)
}
func (p pointer) toUint32Slice() *[]uint32 {
return p.v.Interface().(*[]uint32)
}
func (p pointer) toBool() *bool {
return p.v.Interface().(*bool)
}
func (p pointer) toBoolPtr() **bool {
return p.v.Interface().(**bool)
}
func (p pointer) toBoolSlice() *[]bool {
return p.v.Interface().(*[]bool)
}
func (p pointer) toFloat64() *float64 {
return p.v.Interface().(*float64)
}
func (p pointer) toFloat64Ptr() **float64 {
return p.v.Interface().(**float64)
}
func (p pointer) toFloat64Slice() *[]float64 {
return p.v.Interface().(*[]float64)
}
func (p pointer) toFloat32() *float32 {
return p.v.Interface().(*float32)
}
func (p pointer) toFloat32Ptr() **float32 {
return p.v.Interface().(**float32)
}
func (p pointer) toFloat32Slice() *[]float32 {
return p.v.Interface().(*[]float32)
}
func (p pointer) toString() *string {
return p.v.Interface().(*string)
}
func (p pointer) toStringPtr() **string {
return p.v.Interface().(**string)
}
func (p pointer) toStringSlice() *[]string {
return p.v.Interface().(*[]string)
}
func (p pointer) toBytes() *[]byte {
return p.v.Interface().(*[]byte)
}
func (p pointer) toBytesSlice() *[][]byte {
return p.v.Interface().(*[][]byte)
}
func (p pointer) toExtensions() *XXX_InternalExtensions {
return p.v.Interface().(*XXX_InternalExtensions)
}
func (p pointer) toOldExtensions() *map[int32]Extension {
return p.v.Interface().(*map[int32]Extension)
}
func (p pointer) getPointer() pointer {
return pointer{v: p.v.Elem()}
}
func (p pointer) setPointer(q pointer) {
p.v.Elem().Set(q.v)
}
func (p pointer) appendPointer(q pointer) {
grow(p.v.Elem()).Set(q.v)
}
// getPointerSlice copies []*T from p as a new []pointer.
// This behavior differs from the implementation in pointer_unsafe.go.
func (p pointer) getPointerSlice() []pointer {
if p.v.IsNil() {
return nil
}
n := p.v.Elem().Len()
s := make([]pointer, n)
for i := 0; i < n; i++ {
s[i] = pointer{v: p.v.Elem().Index(i)}
}
return s
}
// setPointerSlice copies []pointer into p as a new []*T.
// This behavior differs from the implementation in pointer_unsafe.go.
func (p pointer) setPointerSlice(v []pointer) {
if v == nil {
p.v.Elem().Set(reflect.New(p.v.Elem().Type()).Elem())
return
}
s := reflect.MakeSlice(p.v.Elem().Type(), 0, len(v))
for _, p := range v {
s = reflect.Append(s, p.v)
}
p.v.Elem().Set(s)
}
// getInterfacePointer returns a pointer that points to the
// interface data of the interface pointed by p.
func (p pointer) getInterfacePointer() pointer {
if p.v.Elem().IsNil() {
return pointer{v: p.v.Elem()}
}
return pointer{v: p.v.Elem().Elem().Elem().Field(0).Addr()} // *interface -> interface -> *struct -> struct
}
func (p pointer) asPointerTo(t reflect.Type) reflect.Value {
// TODO: check that p.v.Type().Elem() == t?
return p.v
}
func atomicLoadUnmarshalInfo(p **unmarshalInfo) *unmarshalInfo {
atomicLock.Lock()
defer atomicLock.Unlock()
return *p
}
func atomicStoreUnmarshalInfo(p **unmarshalInfo, v *unmarshalInfo) {
atomicLock.Lock()
defer atomicLock.Unlock()
*p = v
}
func atomicLoadMarshalInfo(p **marshalInfo) *marshalInfo {
atomicLock.Lock()
defer atomicLock.Unlock()
return *p
}
func atomicStoreMarshalInfo(p **marshalInfo, v *marshalInfo) {
atomicLock.Lock()
defer atomicLock.Unlock()
*p = v
}
func atomicLoadMergeInfo(p **mergeInfo) *mergeInfo {
atomicLock.Lock()
defer atomicLock.Unlock()
return *p
}
func atomicStoreMergeInfo(p **mergeInfo, v *mergeInfo) {
atomicLock.Lock()
defer atomicLock.Unlock()
*p = v
}
func atomicLoadDiscardInfo(p **discardInfo) *discardInfo {
atomicLock.Lock()
defer atomicLock.Unlock()
return *p
}
func atomicStoreDiscardInfo(p **discardInfo, v *discardInfo) {
atomicLock.Lock()
defer atomicLock.Unlock()
*p = v
}
var atomicLock sync.Mutex

313
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// Go support for Protocol Buffers - Google's data interchange format
//
// Copyright 2012 The Go Authors. All rights reserved.
// https://github.com/golang/protobuf
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// +build !purego,!appengine,!js
// This file contains the implementation of the proto field accesses using package unsafe.
package proto
import (
"reflect"
"sync/atomic"
"unsafe"
)
const unsafeAllowed = true
// A field identifies a field in a struct, accessible from a pointer.
// In this implementation, a field is identified by its byte offset from the start of the struct.
type field uintptr
// toField returns a field equivalent to the given reflect field.
func toField(f *reflect.StructField) field {
return field(f.Offset)
}
// invalidField is an invalid field identifier.
const invalidField = ^field(0)
// zeroField is a noop when calling pointer.offset.
const zeroField = field(0)
// IsValid reports whether the field identifier is valid.
func (f field) IsValid() bool {
return f != invalidField
}
// The pointer type below is for the new table-driven encoder/decoder.
// The implementation here uses unsafe.Pointer to create a generic pointer.
// In pointer_reflect.go we use reflect instead of unsafe to implement
// the same (but slower) interface.
type pointer struct {
p unsafe.Pointer
}
// size of pointer
var ptrSize = unsafe.Sizeof(uintptr(0))
// toPointer converts an interface of pointer type to a pointer
// that points to the same target.
func toPointer(i *Message) pointer {
// Super-tricky - read pointer out of data word of interface value.
// Saves ~25ns over the equivalent:
// return valToPointer(reflect.ValueOf(*i))
return pointer{p: (*[2]unsafe.Pointer)(unsafe.Pointer(i))[1]}
}
// toAddrPointer converts an interface to a pointer that points to
// the interface data.
func toAddrPointer(i *interface{}, isptr, deref bool) (p pointer) {
// Super-tricky - read or get the address of data word of interface value.
if isptr {
// The interface is of pointer type, thus it is a direct interface.
// The data word is the pointer data itself. We take its address.
p = pointer{p: unsafe.Pointer(uintptr(unsafe.Pointer(i)) + ptrSize)}
} else {
// The interface is not of pointer type. The data word is the pointer
// to the data.
p = pointer{p: (*[2]unsafe.Pointer)(unsafe.Pointer(i))[1]}
}
if deref {
p.p = *(*unsafe.Pointer)(p.p)
}
return p
}
// valToPointer converts v to a pointer. v must be of pointer type.
func valToPointer(v reflect.Value) pointer {
return pointer{p: unsafe.Pointer(v.Pointer())}
}
// offset converts from a pointer to a structure to a pointer to
// one of its fields.
func (p pointer) offset(f field) pointer {
// For safety, we should panic if !f.IsValid, however calling panic causes
// this to no longer be inlineable, which is a serious performance cost.
/*
if !f.IsValid() {
panic("invalid field")
}
*/
return pointer{p: unsafe.Pointer(uintptr(p.p) + uintptr(f))}
}
func (p pointer) isNil() bool {
return p.p == nil
}
func (p pointer) toInt64() *int64 {
return (*int64)(p.p)
}
func (p pointer) toInt64Ptr() **int64 {
return (**int64)(p.p)
}
func (p pointer) toInt64Slice() *[]int64 {
return (*[]int64)(p.p)
}
func (p pointer) toInt32() *int32 {
return (*int32)(p.p)
}
// See pointer_reflect.go for why toInt32Ptr/Slice doesn't exist.
/*
func (p pointer) toInt32Ptr() **int32 {
return (**int32)(p.p)
}
func (p pointer) toInt32Slice() *[]int32 {
return (*[]int32)(p.p)
}
*/
func (p pointer) getInt32Ptr() *int32 {
return *(**int32)(p.p)
}
func (p pointer) setInt32Ptr(v int32) {
*(**int32)(p.p) = &v
}
// getInt32Slice loads a []int32 from p.
// The value returned is aliased with the original slice.
// This behavior differs from the implementation in pointer_reflect.go.
func (p pointer) getInt32Slice() []int32 {
return *(*[]int32)(p.p)
}
// setInt32Slice stores a []int32 to p.
// The value set is aliased with the input slice.
// This behavior differs from the implementation in pointer_reflect.go.
func (p pointer) setInt32Slice(v []int32) {
*(*[]int32)(p.p) = v
}
// TODO: Can we get rid of appendInt32Slice and use setInt32Slice instead?
func (p pointer) appendInt32Slice(v int32) {
s := (*[]int32)(p.p)
*s = append(*s, v)
}
func (p pointer) toUint64() *uint64 {
return (*uint64)(p.p)
}
func (p pointer) toUint64Ptr() **uint64 {
return (**uint64)(p.p)
}
func (p pointer) toUint64Slice() *[]uint64 {
return (*[]uint64)(p.p)
}
func (p pointer) toUint32() *uint32 {
return (*uint32)(p.p)
}
func (p pointer) toUint32Ptr() **uint32 {
return (**uint32)(p.p)
}
func (p pointer) toUint32Slice() *[]uint32 {
return (*[]uint32)(p.p)
}
func (p pointer) toBool() *bool {
return (*bool)(p.p)
}
func (p pointer) toBoolPtr() **bool {
return (**bool)(p.p)
}
func (p pointer) toBoolSlice() *[]bool {
return (*[]bool)(p.p)
}
func (p pointer) toFloat64() *float64 {
return (*float64)(p.p)
}
func (p pointer) toFloat64Ptr() **float64 {
return (**float64)(p.p)
}
func (p pointer) toFloat64Slice() *[]float64 {
return (*[]float64)(p.p)
}
func (p pointer) toFloat32() *float32 {
return (*float32)(p.p)
}
func (p pointer) toFloat32Ptr() **float32 {
return (**float32)(p.p)
}
func (p pointer) toFloat32Slice() *[]float32 {
return (*[]float32)(p.p)
}
func (p pointer) toString() *string {
return (*string)(p.p)
}
func (p pointer) toStringPtr() **string {
return (**string)(p.p)
}
func (p pointer) toStringSlice() *[]string {
return (*[]string)(p.p)
}
func (p pointer) toBytes() *[]byte {
return (*[]byte)(p.p)
}
func (p pointer) toBytesSlice() *[][]byte {
return (*[][]byte)(p.p)
}
func (p pointer) toExtensions() *XXX_InternalExtensions {
return (*XXX_InternalExtensions)(p.p)
}
func (p pointer) toOldExtensions() *map[int32]Extension {
return (*map[int32]Extension)(p.p)
}
// getPointerSlice loads []*T from p as a []pointer.
// The value returned is aliased with the original slice.
// This behavior differs from the implementation in pointer_reflect.go.
func (p pointer) getPointerSlice() []pointer {
// Super-tricky - p should point to a []*T where T is a
// message type. We load it as []pointer.
return *(*[]pointer)(p.p)
}
// setPointerSlice stores []pointer into p as a []*T.
// The value set is aliased with the input slice.
// This behavior differs from the implementation in pointer_reflect.go.
func (p pointer) setPointerSlice(v []pointer) {
// Super-tricky - p should point to a []*T where T is a
// message type. We store it as []pointer.
*(*[]pointer)(p.p) = v
}
// getPointer loads the pointer at p and returns it.
func (p pointer) getPointer() pointer {
return pointer{p: *(*unsafe.Pointer)(p.p)}
}
// setPointer stores the pointer q at p.
func (p pointer) setPointer(q pointer) {
*(*unsafe.Pointer)(p.p) = q.p
}
// append q to the slice pointed to by p.
func (p pointer) appendPointer(q pointer) {
s := (*[]unsafe.Pointer)(p.p)
*s = append(*s, q.p)
}
// getInterfacePointer returns a pointer that points to the
// interface data of the interface pointed by p.
func (p pointer) getInterfacePointer() pointer {
// Super-tricky - read pointer out of data word of interface value.
return pointer{p: (*(*[2]unsafe.Pointer)(p.p))[1]}
}
// asPointerTo returns a reflect.Value that is a pointer to an
// object of type t stored at p.
func (p pointer) asPointerTo(t reflect.Type) reflect.Value {
return reflect.NewAt(t, p.p)
}
func atomicLoadUnmarshalInfo(p **unmarshalInfo) *unmarshalInfo {
return (*unmarshalInfo)(atomic.LoadPointer((*unsafe.Pointer)(unsafe.Pointer(p))))
}
func atomicStoreUnmarshalInfo(p **unmarshalInfo, v *unmarshalInfo) {
atomic.StorePointer((*unsafe.Pointer)(unsafe.Pointer(p)), unsafe.Pointer(v))
}
func atomicLoadMarshalInfo(p **marshalInfo) *marshalInfo {
return (*marshalInfo)(atomic.LoadPointer((*unsafe.Pointer)(unsafe.Pointer(p))))
}
func atomicStoreMarshalInfo(p **marshalInfo, v *marshalInfo) {
atomic.StorePointer((*unsafe.Pointer)(unsafe.Pointer(p)), unsafe.Pointer(v))
}
func atomicLoadMergeInfo(p **mergeInfo) *mergeInfo {
return (*mergeInfo)(atomic.LoadPointer((*unsafe.Pointer)(unsafe.Pointer(p))))
}
func atomicStoreMergeInfo(p **mergeInfo, v *mergeInfo) {
atomic.StorePointer((*unsafe.Pointer)(unsafe.Pointer(p)), unsafe.Pointer(v))
}
func atomicLoadDiscardInfo(p **discardInfo) *discardInfo {
return (*discardInfo)(atomic.LoadPointer((*unsafe.Pointer)(unsafe.Pointer(p))))
}
func atomicStoreDiscardInfo(p **discardInfo, v *discardInfo) {
atomic.StorePointer((*unsafe.Pointer)(unsafe.Pointer(p)), unsafe.Pointer(v))
}

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// Go support for Protocol Buffers - Google's data interchange format
//
// Copyright 2010 The Go Authors. All rights reserved.
// https://github.com/golang/protobuf
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
package proto
/*
* Routines for encoding data into the wire format for protocol buffers.
*/
import (
"fmt"
"log"
"reflect"
"sort"
"strconv"
"strings"
"sync"
)
const debug bool = false
// Constants that identify the encoding of a value on the wire.
const (
WireVarint = 0
WireFixed64 = 1
WireBytes = 2
WireStartGroup = 3
WireEndGroup = 4
WireFixed32 = 5
)
// tagMap is an optimization over map[int]int for typical protocol buffer
// use-cases. Encoded protocol buffers are often in tag order with small tag
// numbers.
type tagMap struct {
fastTags []int
slowTags map[int]int
}
// tagMapFastLimit is the upper bound on the tag number that will be stored in
// the tagMap slice rather than its map.
const tagMapFastLimit = 1024
func (p *tagMap) get(t int) (int, bool) {
if t > 0 && t < tagMapFastLimit {
if t >= len(p.fastTags) {
return 0, false
}
fi := p.fastTags[t]
return fi, fi >= 0
}
fi, ok := p.slowTags[t]
return fi, ok
}
func (p *tagMap) put(t int, fi int) {
if t > 0 && t < tagMapFastLimit {
for len(p.fastTags) < t+1 {
p.fastTags = append(p.fastTags, -1)
}
p.fastTags[t] = fi
return
}
if p.slowTags == nil {
p.slowTags = make(map[int]int)
}
p.slowTags[t] = fi
}
// StructProperties represents properties for all the fields of a struct.
// decoderTags and decoderOrigNames should only be used by the decoder.
type StructProperties struct {
Prop []*Properties // properties for each field
reqCount int // required count
decoderTags tagMap // map from proto tag to struct field number
decoderOrigNames map[string]int // map from original name to struct field number
order []int // list of struct field numbers in tag order
// OneofTypes contains information about the oneof fields in this message.
// It is keyed by the original name of a field.
OneofTypes map[string]*OneofProperties
}
// OneofProperties represents information about a specific field in a oneof.
type OneofProperties struct {
Type reflect.Type // pointer to generated struct type for this oneof field
Field int // struct field number of the containing oneof in the message
Prop *Properties
}
// Implement the sorting interface so we can sort the fields in tag order, as recommended by the spec.
// See encode.go, (*Buffer).enc_struct.
func (sp *StructProperties) Len() int { return len(sp.order) }
func (sp *StructProperties) Less(i, j int) bool {
return sp.Prop[sp.order[i]].Tag < sp.Prop[sp.order[j]].Tag
}
func (sp *StructProperties) Swap(i, j int) { sp.order[i], sp.order[j] = sp.order[j], sp.order[i] }
// Properties represents the protocol-specific behavior of a single struct field.
type Properties struct {
Name string // name of the field, for error messages
OrigName string // original name before protocol compiler (always set)
JSONName string // name to use for JSON; determined by protoc
Wire string
WireType int
Tag int
Required bool
Optional bool
Repeated bool
Packed bool // relevant for repeated primitives only
Enum string // set for enum types only
proto3 bool // whether this is known to be a proto3 field
oneof bool // whether this is a oneof field
Default string // default value
HasDefault bool // whether an explicit default was provided
stype reflect.Type // set for struct types only
sprop *StructProperties // set for struct types only
mtype reflect.Type // set for map types only
MapKeyProp *Properties // set for map types only
MapValProp *Properties // set for map types only
}
// String formats the properties in the protobuf struct field tag style.
func (p *Properties) String() string {
s := p.Wire
s += ","
s += strconv.Itoa(p.Tag)
if p.Required {
s += ",req"
}
if p.Optional {
s += ",opt"
}
if p.Repeated {
s += ",rep"
}
if p.Packed {
s += ",packed"
}
s += ",name=" + p.OrigName
if p.JSONName != p.OrigName {
s += ",json=" + p.JSONName
}
if p.proto3 {
s += ",proto3"
}
if p.oneof {
s += ",oneof"
}
if len(p.Enum) > 0 {
s += ",enum=" + p.Enum
}
if p.HasDefault {
s += ",def=" + p.Default
}
return s
}
// Parse populates p by parsing a string in the protobuf struct field tag style.
func (p *Properties) Parse(s string) {
// "bytes,49,opt,name=foo,def=hello!"
fields := strings.Split(s, ",") // breaks def=, but handled below.
if len(fields) < 2 {
log.Printf("proto: tag has too few fields: %q", s)
return
}
p.Wire = fields[0]
switch p.Wire {
case "varint":
p.WireType = WireVarint
case "fixed32":
p.WireType = WireFixed32
case "fixed64":
p.WireType = WireFixed64
case "zigzag32":
p.WireType = WireVarint
case "zigzag64":
p.WireType = WireVarint
case "bytes", "group":
p.WireType = WireBytes
// no numeric converter for non-numeric types
default:
log.Printf("proto: tag has unknown wire type: %q", s)
return
}
var err error
p.Tag, err = strconv.Atoi(fields[1])
if err != nil {
return
}
outer:
for i := 2; i < len(fields); i++ {
f := fields[i]
switch {
case f == "req":
p.Required = true
case f == "opt":
p.Optional = true
case f == "rep":
p.Repeated = true
case f == "packed":
p.Packed = true
case strings.HasPrefix(f, "name="):
p.OrigName = f[5:]
case strings.HasPrefix(f, "json="):
p.JSONName = f[5:]
case strings.HasPrefix(f, "enum="):
p.Enum = f[5:]
case f == "proto3":
p.proto3 = true
case f == "oneof":
p.oneof = true
case strings.HasPrefix(f, "def="):
p.HasDefault = true
p.Default = f[4:] // rest of string
if i+1 < len(fields) {
// Commas aren't escaped, and def is always last.
p.Default += "," + strings.Join(fields[i+1:], ",")
break outer
}
}
}
}
var protoMessageType = reflect.TypeOf((*Message)(nil)).Elem()
// setFieldProps initializes the field properties for submessages and maps.
func (p *Properties) setFieldProps(typ reflect.Type, f *reflect.StructField, lockGetProp bool) {
switch t1 := typ; t1.Kind() {
case reflect.Ptr:
if t1.Elem().Kind() == reflect.Struct {
p.stype = t1.Elem()
}
case reflect.Slice:
if t2 := t1.Elem(); t2.Kind() == reflect.Ptr && t2.Elem().Kind() == reflect.Struct {
p.stype = t2.Elem()
}
case reflect.Map:
p.mtype = t1
p.MapKeyProp = &Properties{}
p.MapKeyProp.init(reflect.PtrTo(p.mtype.Key()), "Key", f.Tag.Get("protobuf_key"), nil, lockGetProp)
p.MapValProp = &Properties{}
vtype := p.mtype.Elem()
if vtype.Kind() != reflect.Ptr && vtype.Kind() != reflect.Slice {
// The value type is not a message (*T) or bytes ([]byte),
// so we need encoders for the pointer to this type.
vtype = reflect.PtrTo(vtype)
}
p.MapValProp.init(vtype, "Value", f.Tag.Get("protobuf_val"), nil, lockGetProp)
}
if p.stype != nil {
if lockGetProp {
p.sprop = GetProperties(p.stype)
} else {
p.sprop = getPropertiesLocked(p.stype)
}
}
}
var (
marshalerType = reflect.TypeOf((*Marshaler)(nil)).Elem()
)
// Init populates the properties from a protocol buffer struct tag.
func (p *Properties) Init(typ reflect.Type, name, tag string, f *reflect.StructField) {
p.init(typ, name, tag, f, true)
}
func (p *Properties) init(typ reflect.Type, name, tag string, f *reflect.StructField, lockGetProp bool) {
// "bytes,49,opt,def=hello!"
p.Name = name
p.OrigName = name
if tag == "" {
return
}
p.Parse(tag)
p.setFieldProps(typ, f, lockGetProp)
}
var (
propertiesMu sync.RWMutex
propertiesMap = make(map[reflect.Type]*StructProperties)
)
// GetProperties returns the list of properties for the type represented by t.
// t must represent a generated struct type of a protocol message.
func GetProperties(t reflect.Type) *StructProperties {
if t.Kind() != reflect.Struct {
panic("proto: type must have kind struct")
}
// Most calls to GetProperties in a long-running program will be
// retrieving details for types we have seen before.
propertiesMu.RLock()
sprop, ok := propertiesMap[t]
propertiesMu.RUnlock()
if ok {
return sprop
}
propertiesMu.Lock()
sprop = getPropertiesLocked(t)
propertiesMu.Unlock()
return sprop
}
type (
oneofFuncsIface interface {
XXX_OneofFuncs() (func(Message, *Buffer) error, func(Message, int, int, *Buffer) (bool, error), func(Message) int, []interface{})
}
oneofWrappersIface interface {
XXX_OneofWrappers() []interface{}
}
)
// getPropertiesLocked requires that propertiesMu is held.
func getPropertiesLocked(t reflect.Type) *StructProperties {
if prop, ok := propertiesMap[t]; ok {
return prop
}
prop := new(StructProperties)
// in case of recursive protos, fill this in now.
propertiesMap[t] = prop
// build properties
prop.Prop = make([]*Properties, t.NumField())
prop.order = make([]int, t.NumField())
for i := 0; i < t.NumField(); i++ {
f := t.Field(i)
p := new(Properties)
name := f.Name
p.init(f.Type, name, f.Tag.Get("protobuf"), &f, false)
oneof := f.Tag.Get("protobuf_oneof") // special case
if oneof != "" {
// Oneof fields don't use the traditional protobuf tag.
p.OrigName = oneof
}
prop.Prop[i] = p
prop.order[i] = i
if debug {
print(i, " ", f.Name, " ", t.String(), " ")
if p.Tag > 0 {
print(p.String())
}
print("\n")
}
}
// Re-order prop.order.
sort.Sort(prop)
var oots []interface{}
switch m := reflect.Zero(reflect.PtrTo(t)).Interface().(type) {
case oneofFuncsIface:
_, _, _, oots = m.XXX_OneofFuncs()
case oneofWrappersIface:
oots = m.XXX_OneofWrappers()
}
if len(oots) > 0 {
// Interpret oneof metadata.
prop.OneofTypes = make(map[string]*OneofProperties)
for _, oot := range oots {
oop := &OneofProperties{
Type: reflect.ValueOf(oot).Type(), // *T
Prop: new(Properties),
}
sft := oop.Type.Elem().Field(0)
oop.Prop.Name = sft.Name
oop.Prop.Parse(sft.Tag.Get("protobuf"))
// There will be exactly one interface field that
// this new value is assignable to.
for i := 0; i < t.NumField(); i++ {
f := t.Field(i)
if f.Type.Kind() != reflect.Interface {
continue
}
if !oop.Type.AssignableTo(f.Type) {
continue
}
oop.Field = i
break
}
prop.OneofTypes[oop.Prop.OrigName] = oop
}
}
// build required counts
// build tags
reqCount := 0
prop.decoderOrigNames = make(map[string]int)
for i, p := range prop.Prop {
if strings.HasPrefix(p.Name, "XXX_") {
// Internal fields should not appear in tags/origNames maps.
// They are handled specially when encoding and decoding.
continue
}
if p.Required {
reqCount++
}
prop.decoderTags.put(p.Tag, i)
prop.decoderOrigNames[p.OrigName] = i
}
prop.reqCount = reqCount
return prop
}
// A global registry of enum types.
// The generated code will register the generated maps by calling RegisterEnum.
var enumValueMaps = make(map[string]map[string]int32)
// RegisterEnum is called from the generated code to install the enum descriptor
// maps into the global table to aid parsing text format protocol buffers.
func RegisterEnum(typeName string, unusedNameMap map[int32]string, valueMap map[string]int32) {
if _, ok := enumValueMaps[typeName]; ok {
panic("proto: duplicate enum registered: " + typeName)
}
enumValueMaps[typeName] = valueMap
}
// EnumValueMap returns the mapping from names to integers of the
// enum type enumType, or a nil if not found.
func EnumValueMap(enumType string) map[string]int32 {
return enumValueMaps[enumType]
}
// A registry of all linked message types.
// The string is a fully-qualified proto name ("pkg.Message").
var (
protoTypedNils = make(map[string]Message) // a map from proto names to typed nil pointers
protoMapTypes = make(map[string]reflect.Type) // a map from proto names to map types
revProtoTypes = make(map[reflect.Type]string)
)
// RegisterType is called from generated code and maps from the fully qualified
// proto name to the type (pointer to struct) of the protocol buffer.
func RegisterType(x Message, name string) {
if _, ok := protoTypedNils[name]; ok {
// TODO: Some day, make this a panic.
log.Printf("proto: duplicate proto type registered: %s", name)
return
}
t := reflect.TypeOf(x)
if v := reflect.ValueOf(x); v.Kind() == reflect.Ptr && v.Pointer() == 0 {
// Generated code always calls RegisterType with nil x.
// This check is just for extra safety.
protoTypedNils[name] = x
} else {
protoTypedNils[name] = reflect.Zero(t).Interface().(Message)
}
revProtoTypes[t] = name
}
// RegisterMapType is called from generated code and maps from the fully qualified
// proto name to the native map type of the proto map definition.
func RegisterMapType(x interface{}, name string) {
if reflect.TypeOf(x).Kind() != reflect.Map {
panic(fmt.Sprintf("RegisterMapType(%T, %q); want map", x, name))
}
if _, ok := protoMapTypes[name]; ok {
log.Printf("proto: duplicate proto type registered: %s", name)
return
}
t := reflect.TypeOf(x)
protoMapTypes[name] = t
revProtoTypes[t] = name
}
// MessageName returns the fully-qualified proto name for the given message type.
func MessageName(x Message) string {
type xname interface {
XXX_MessageName() string
}
if m, ok := x.(xname); ok {
return m.XXX_MessageName()
}
return revProtoTypes[reflect.TypeOf(x)]
}
// MessageType returns the message type (pointer to struct) for a named message.
// The type is not guaranteed to implement proto.Message if the name refers to a
// map entry.
func MessageType(name string) reflect.Type {
if t, ok := protoTypedNils[name]; ok {
return reflect.TypeOf(t)
}
return protoMapTypes[name]
}
// A registry of all linked proto files.
var (
protoFiles = make(map[string][]byte) // file name => fileDescriptor
)
// RegisterFile is called from generated code and maps from the
// full file name of a .proto file to its compressed FileDescriptorProto.
func RegisterFile(filename string, fileDescriptor []byte) {
protoFiles[filename] = fileDescriptor
}
// FileDescriptor returns the compressed FileDescriptorProto for a .proto file.
func FileDescriptor(filename string) []byte { return protoFiles[filename] }

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// Go support for Protocol Buffers - Google's data interchange format
//
// Copyright 2016 The Go Authors. All rights reserved.
// https://github.com/golang/protobuf
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
package proto
import (
"fmt"
"reflect"
"strings"
"sync"
"sync/atomic"
)
// Merge merges the src message into dst.
// This assumes that dst and src of the same type and are non-nil.
func (a *InternalMessageInfo) Merge(dst, src Message) {
mi := atomicLoadMergeInfo(&a.merge)
if mi == nil {
mi = getMergeInfo(reflect.TypeOf(dst).Elem())
atomicStoreMergeInfo(&a.merge, mi)
}
mi.merge(toPointer(&dst), toPointer(&src))
}
type mergeInfo struct {
typ reflect.Type
initialized int32 // 0: only typ is valid, 1: everything is valid
lock sync.Mutex
fields []mergeFieldInfo
unrecognized field // Offset of XXX_unrecognized
}
type mergeFieldInfo struct {
field field // Offset of field, guaranteed to be valid
// isPointer reports whether the value in the field is a pointer.
// This is true for the following situations:
// * Pointer to struct
// * Pointer to basic type (proto2 only)
// * Slice (first value in slice header is a pointer)
// * String (first value in string header is a pointer)
isPointer bool
// basicWidth reports the width of the field assuming that it is directly
// embedded in the struct (as is the case for basic types in proto3).
// The possible values are:
// 0: invalid
// 1: bool
// 4: int32, uint32, float32
// 8: int64, uint64, float64
basicWidth int
// Where dst and src are pointers to the types being merged.
merge func(dst, src pointer)
}
var (
mergeInfoMap = map[reflect.Type]*mergeInfo{}
mergeInfoLock sync.Mutex
)
func getMergeInfo(t reflect.Type) *mergeInfo {
mergeInfoLock.Lock()
defer mergeInfoLock.Unlock()
mi := mergeInfoMap[t]
if mi == nil {
mi = &mergeInfo{typ: t}
mergeInfoMap[t] = mi
}
return mi
}
// merge merges src into dst assuming they are both of type *mi.typ.
func (mi *mergeInfo) merge(dst, src pointer) {
if dst.isNil() {
panic("proto: nil destination")
}
if src.isNil() {
return // Nothing to do.
}
if atomic.LoadInt32(&mi.initialized) == 0 {
mi.computeMergeInfo()
}
for _, fi := range mi.fields {
sfp := src.offset(fi.field)
// As an optimization, we can avoid the merge function call cost
// if we know for sure that the source will have no effect
// by checking if it is the zero value.
if unsafeAllowed {
if fi.isPointer && sfp.getPointer().isNil() { // Could be slice or string
continue
}
if fi.basicWidth > 0 {
switch {
case fi.basicWidth == 1 && !*sfp.toBool():
continue
case fi.basicWidth == 4 && *sfp.toUint32() == 0:
continue
case fi.basicWidth == 8 && *sfp.toUint64() == 0:
continue
}
}
}
dfp := dst.offset(fi.field)
fi.merge(dfp, sfp)
}
// TODO: Make this faster?
out := dst.asPointerTo(mi.typ).Elem()
in := src.asPointerTo(mi.typ).Elem()
if emIn, err := extendable(in.Addr().Interface()); err == nil {
emOut, _ := extendable(out.Addr().Interface())
mIn, muIn := emIn.extensionsRead()
if mIn != nil {
mOut := emOut.extensionsWrite()
muIn.Lock()
mergeExtension(mOut, mIn)
muIn.Unlock()
}
}
if mi.unrecognized.IsValid() {
if b := *src.offset(mi.unrecognized).toBytes(); len(b) > 0 {
*dst.offset(mi.unrecognized).toBytes() = append([]byte(nil), b...)
}
}
}
func (mi *mergeInfo) computeMergeInfo() {
mi.lock.Lock()
defer mi.lock.Unlock()
if mi.initialized != 0 {
return
}
t := mi.typ
n := t.NumField()
props := GetProperties(t)
for i := 0; i < n; i++ {
f := t.Field(i)
if strings.HasPrefix(f.Name, "XXX_") {
continue
}
mfi := mergeFieldInfo{field: toField(&f)}
tf := f.Type
// As an optimization, we can avoid the merge function call cost
// if we know for sure that the source will have no effect
// by checking if it is the zero value.
if unsafeAllowed {
switch tf.Kind() {
case reflect.Ptr, reflect.Slice, reflect.String:
// As a special case, we assume slices and strings are pointers
// since we know that the first field in the SliceSlice or
// StringHeader is a data pointer.
mfi.isPointer = true
case reflect.Bool:
mfi.basicWidth = 1
case reflect.Int32, reflect.Uint32, reflect.Float32:
mfi.basicWidth = 4
case reflect.Int64, reflect.Uint64, reflect.Float64:
mfi.basicWidth = 8
}
}
// Unwrap tf to get at its most basic type.
var isPointer, isSlice bool
if tf.Kind() == reflect.Slice && tf.Elem().Kind() != reflect.Uint8 {
isSlice = true
tf = tf.Elem()
}
if tf.Kind() == reflect.Ptr {
isPointer = true
tf = tf.Elem()
}
if isPointer && isSlice && tf.Kind() != reflect.Struct {
panic("both pointer and slice for basic type in " + tf.Name())
}
switch tf.Kind() {
case reflect.Int32:
switch {
case isSlice: // E.g., []int32
mfi.merge = func(dst, src pointer) {
// NOTE: toInt32Slice is not defined (see pointer_reflect.go).
/*
sfsp := src.toInt32Slice()
if *sfsp != nil {
dfsp := dst.toInt32Slice()
*dfsp = append(*dfsp, *sfsp...)
if *dfsp == nil {
*dfsp = []int64{}
}
}
*/
sfs := src.getInt32Slice()
if sfs != nil {
dfs := dst.getInt32Slice()
dfs = append(dfs, sfs...)
if dfs == nil {
dfs = []int32{}
}
dst.setInt32Slice(dfs)
}
}
case isPointer: // E.g., *int32
mfi.merge = func(dst, src pointer) {
// NOTE: toInt32Ptr is not defined (see pointer_reflect.go).
/*
sfpp := src.toInt32Ptr()
if *sfpp != nil {
dfpp := dst.toInt32Ptr()
if *dfpp == nil {
*dfpp = Int32(**sfpp)
} else {
**dfpp = **sfpp
}
}
*/
sfp := src.getInt32Ptr()
if sfp != nil {
dfp := dst.getInt32Ptr()
if dfp == nil {
dst.setInt32Ptr(*sfp)
} else {
*dfp = *sfp
}
}
}
default: // E.g., int32
mfi.merge = func(dst, src pointer) {
if v := *src.toInt32(); v != 0 {
*dst.toInt32() = v
}
}
}
case reflect.Int64:
switch {
case isSlice: // E.g., []int64
mfi.merge = func(dst, src pointer) {
sfsp := src.toInt64Slice()
if *sfsp != nil {
dfsp := dst.toInt64Slice()
*dfsp = append(*dfsp, *sfsp...)
if *dfsp == nil {
*dfsp = []int64{}
}
}
}
case isPointer: // E.g., *int64
mfi.merge = func(dst, src pointer) {
sfpp := src.toInt64Ptr()
if *sfpp != nil {
dfpp := dst.toInt64Ptr()
if *dfpp == nil {
*dfpp = Int64(**sfpp)
} else {
**dfpp = **sfpp
}
}
}
default: // E.g., int64
mfi.merge = func(dst, src pointer) {
if v := *src.toInt64(); v != 0 {
*dst.toInt64() = v
}
}
}
case reflect.Uint32:
switch {
case isSlice: // E.g., []uint32
mfi.merge = func(dst, src pointer) {
sfsp := src.toUint32Slice()
if *sfsp != nil {
dfsp := dst.toUint32Slice()
*dfsp = append(*dfsp, *sfsp...)
if *dfsp == nil {
*dfsp = []uint32{}
}
}
}
case isPointer: // E.g., *uint32
mfi.merge = func(dst, src pointer) {
sfpp := src.toUint32Ptr()
if *sfpp != nil {
dfpp := dst.toUint32Ptr()
if *dfpp == nil {
*dfpp = Uint32(**sfpp)
} else {
**dfpp = **sfpp
}
}
}
default: // E.g., uint32
mfi.merge = func(dst, src pointer) {
if v := *src.toUint32(); v != 0 {
*dst.toUint32() = v
}
}
}
case reflect.Uint64:
switch {
case isSlice: // E.g., []uint64
mfi.merge = func(dst, src pointer) {
sfsp := src.toUint64Slice()
if *sfsp != nil {
dfsp := dst.toUint64Slice()
*dfsp = append(*dfsp, *sfsp...)
if *dfsp == nil {
*dfsp = []uint64{}
}
}
}
case isPointer: // E.g., *uint64
mfi.merge = func(dst, src pointer) {
sfpp := src.toUint64Ptr()
if *sfpp != nil {
dfpp := dst.toUint64Ptr()
if *dfpp == nil {
*dfpp = Uint64(**sfpp)
} else {
**dfpp = **sfpp
}
}
}
default: // E.g., uint64
mfi.merge = func(dst, src pointer) {
if v := *src.toUint64(); v != 0 {
*dst.toUint64() = v
}
}
}
case reflect.Float32:
switch {
case isSlice: // E.g., []float32
mfi.merge = func(dst, src pointer) {
sfsp := src.toFloat32Slice()
if *sfsp != nil {
dfsp := dst.toFloat32Slice()
*dfsp = append(*dfsp, *sfsp...)
if *dfsp == nil {
*dfsp = []float32{}
}
}
}
case isPointer: // E.g., *float32
mfi.merge = func(dst, src pointer) {
sfpp := src.toFloat32Ptr()
if *sfpp != nil {
dfpp := dst.toFloat32Ptr()
if *dfpp == nil {
*dfpp = Float32(**sfpp)
} else {
**dfpp = **sfpp
}
}
}
default: // E.g., float32
mfi.merge = func(dst, src pointer) {
if v := *src.toFloat32(); v != 0 {
*dst.toFloat32() = v
}
}
}
case reflect.Float64:
switch {
case isSlice: // E.g., []float64
mfi.merge = func(dst, src pointer) {
sfsp := src.toFloat64Slice()
if *sfsp != nil {
dfsp := dst.toFloat64Slice()
*dfsp = append(*dfsp, *sfsp...)
if *dfsp == nil {
*dfsp = []float64{}
}
}
}
case isPointer: // E.g., *float64
mfi.merge = func(dst, src pointer) {
sfpp := src.toFloat64Ptr()
if *sfpp != nil {
dfpp := dst.toFloat64Ptr()
if *dfpp == nil {
*dfpp = Float64(**sfpp)
} else {
**dfpp = **sfpp
}
}
}
default: // E.g., float64
mfi.merge = func(dst, src pointer) {
if v := *src.toFloat64(); v != 0 {
*dst.toFloat64() = v
}
}
}
case reflect.Bool:
switch {
case isSlice: // E.g., []bool
mfi.merge = func(dst, src pointer) {
sfsp := src.toBoolSlice()
if *sfsp != nil {
dfsp := dst.toBoolSlice()
*dfsp = append(*dfsp, *sfsp...)
if *dfsp == nil {
*dfsp = []bool{}
}
}
}
case isPointer: // E.g., *bool
mfi.merge = func(dst, src pointer) {
sfpp := src.toBoolPtr()
if *sfpp != nil {
dfpp := dst.toBoolPtr()
if *dfpp == nil {
*dfpp = Bool(**sfpp)
} else {
**dfpp = **sfpp
}
}
}
default: // E.g., bool
mfi.merge = func(dst, src pointer) {
if v := *src.toBool(); v {
*dst.toBool() = v
}
}
}
case reflect.String:
switch {
case isSlice: // E.g., []string
mfi.merge = func(dst, src pointer) {
sfsp := src.toStringSlice()
if *sfsp != nil {
dfsp := dst.toStringSlice()
*dfsp = append(*dfsp, *sfsp...)
if *dfsp == nil {
*dfsp = []string{}
}
}
}
case isPointer: // E.g., *string
mfi.merge = func(dst, src pointer) {
sfpp := src.toStringPtr()
if *sfpp != nil {
dfpp := dst.toStringPtr()
if *dfpp == nil {
*dfpp = String(**sfpp)
} else {
**dfpp = **sfpp
}
}
}
default: // E.g., string
mfi.merge = func(dst, src pointer) {
if v := *src.toString(); v != "" {
*dst.toString() = v
}
}
}
case reflect.Slice:
isProto3 := props.Prop[i].proto3
switch {
case isPointer:
panic("bad pointer in byte slice case in " + tf.Name())
case tf.Elem().Kind() != reflect.Uint8:
panic("bad element kind in byte slice case in " + tf.Name())
case isSlice: // E.g., [][]byte
mfi.merge = func(dst, src pointer) {
sbsp := src.toBytesSlice()
if *sbsp != nil {
dbsp := dst.toBytesSlice()
for _, sb := range *sbsp {
if sb == nil {
*dbsp = append(*dbsp, nil)
} else {
*dbsp = append(*dbsp, append([]byte{}, sb...))
}
}
if *dbsp == nil {
*dbsp = [][]byte{}
}
}
}
default: // E.g., []byte
mfi.merge = func(dst, src pointer) {
sbp := src.toBytes()
if *sbp != nil {
dbp := dst.toBytes()
if !isProto3 || len(*sbp) > 0 {
*dbp = append([]byte{}, *sbp...)
}
}
}
}
case reflect.Struct:
switch {
case !isPointer:
panic(fmt.Sprintf("message field %s without pointer", tf))
case isSlice: // E.g., []*pb.T
mi := getMergeInfo(tf)
mfi.merge = func(dst, src pointer) {
sps := src.getPointerSlice()
if sps != nil {
dps := dst.getPointerSlice()
for _, sp := range sps {
var dp pointer
if !sp.isNil() {
dp = valToPointer(reflect.New(tf))
mi.merge(dp, sp)
}
dps = append(dps, dp)
}
if dps == nil {
dps = []pointer{}
}
dst.setPointerSlice(dps)
}
}
default: // E.g., *pb.T
mi := getMergeInfo(tf)
mfi.merge = func(dst, src pointer) {
sp := src.getPointer()
if !sp.isNil() {
dp := dst.getPointer()
if dp.isNil() {
dp = valToPointer(reflect.New(tf))
dst.setPointer(dp)
}
mi.merge(dp, sp)
}
}
}
case reflect.Map:
switch {
case isPointer || isSlice:
panic("bad pointer or slice in map case in " + tf.Name())
default: // E.g., map[K]V
mfi.merge = func(dst, src pointer) {
sm := src.asPointerTo(tf).Elem()
if sm.Len() == 0 {
return
}
dm := dst.asPointerTo(tf).Elem()
if dm.IsNil() {
dm.Set(reflect.MakeMap(tf))
}
switch tf.Elem().Kind() {
case reflect.Ptr: // Proto struct (e.g., *T)
for _, key := range sm.MapKeys() {
val := sm.MapIndex(key)
val = reflect.ValueOf(Clone(val.Interface().(Message)))
dm.SetMapIndex(key, val)
}
case reflect.Slice: // E.g. Bytes type (e.g., []byte)
for _, key := range sm.MapKeys() {
val := sm.MapIndex(key)
val = reflect.ValueOf(append([]byte{}, val.Bytes()...))
dm.SetMapIndex(key, val)
}
default: // Basic type (e.g., string)
for _, key := range sm.MapKeys() {
val := sm.MapIndex(key)
dm.SetMapIndex(key, val)
}
}
}
}
case reflect.Interface:
// Must be oneof field.
switch {
case isPointer || isSlice:
panic("bad pointer or slice in interface case in " + tf.Name())
default: // E.g., interface{}
// TODO: Make this faster?
mfi.merge = func(dst, src pointer) {
su := src.asPointerTo(tf).Elem()
if !su.IsNil() {
du := dst.asPointerTo(tf).Elem()
typ := su.Elem().Type()
if du.IsNil() || du.Elem().Type() != typ {
du.Set(reflect.New(typ.Elem())) // Initialize interface if empty
}
sv := su.Elem().Elem().Field(0)
if sv.Kind() == reflect.Ptr && sv.IsNil() {
return
}
dv := du.Elem().Elem().Field(0)
if dv.Kind() == reflect.Ptr && dv.IsNil() {
dv.Set(reflect.New(sv.Type().Elem())) // Initialize proto message if empty
}
switch sv.Type().Kind() {
case reflect.Ptr: // Proto struct (e.g., *T)
Merge(dv.Interface().(Message), sv.Interface().(Message))
case reflect.Slice: // E.g. Bytes type (e.g., []byte)
dv.Set(reflect.ValueOf(append([]byte{}, sv.Bytes()...)))
default: // Basic type (e.g., string)
dv.Set(sv)
}
}
}
}
default:
panic(fmt.Sprintf("merger not found for type:%s", tf))
}
mi.fields = append(mi.fields, mfi)
}
mi.unrecognized = invalidField
if f, ok := t.FieldByName("XXX_unrecognized"); ok {
if f.Type != reflect.TypeOf([]byte{}) {
panic("expected XXX_unrecognized to be of type []byte")
}
mi.unrecognized = toField(&f)
}
atomic.StoreInt32(&mi.initialized, 1)
}

2053
vendor/github.com/golang/protobuf/proto/table_unmarshal.go generated vendored Normal file
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vendor/github.com/golang/protobuf/proto/text.go generated vendored Normal file
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@ -0,0 +1,843 @@
// Go support for Protocol Buffers - Google's data interchange format
//
// Copyright 2010 The Go Authors. All rights reserved.
// https://github.com/golang/protobuf
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
package proto
// Functions for writing the text protocol buffer format.
import (
"bufio"
"bytes"
"encoding"
"errors"
"fmt"
"io"
"log"
"math"
"reflect"
"sort"
"strings"
)
var (
newline = []byte("\n")
spaces = []byte(" ")
endBraceNewline = []byte("}\n")
backslashN = []byte{'\\', 'n'}
backslashR = []byte{'\\', 'r'}
backslashT = []byte{'\\', 't'}
backslashDQ = []byte{'\\', '"'}
backslashBS = []byte{'\\', '\\'}
posInf = []byte("inf")
negInf = []byte("-inf")
nan = []byte("nan")
)
type writer interface {
io.Writer
WriteByte(byte) error
}
// textWriter is an io.Writer that tracks its indentation level.
type textWriter struct {
ind int
complete bool // if the current position is a complete line
compact bool // whether to write out as a one-liner
w writer
}
func (w *textWriter) WriteString(s string) (n int, err error) {
if !strings.Contains(s, "\n") {
if !w.compact && w.complete {
w.writeIndent()
}
w.complete = false
return io.WriteString(w.w, s)
}
// WriteString is typically called without newlines, so this
// codepath and its copy are rare. We copy to avoid
// duplicating all of Write's logic here.
return w.Write([]byte(s))
}
func (w *textWriter) Write(p []byte) (n int, err error) {
newlines := bytes.Count(p, newline)
if newlines == 0 {
if !w.compact && w.complete {
w.writeIndent()
}
n, err = w.w.Write(p)
w.complete = false
return n, err
}
frags := bytes.SplitN(p, newline, newlines+1)
if w.compact {
for i, frag := range frags {
if i > 0 {
if err := w.w.WriteByte(' '); err != nil {
return n, err
}
n++
}
nn, err := w.w.Write(frag)
n += nn
if err != nil {
return n, err
}
}
return n, nil
}
for i, frag := range frags {
if w.complete {
w.writeIndent()
}
nn, err := w.w.Write(frag)
n += nn
if err != nil {
return n, err
}
if i+1 < len(frags) {
if err := w.w.WriteByte('\n'); err != nil {
return n, err
}
n++
}
}
w.complete = len(frags[len(frags)-1]) == 0
return n, nil
}
func (w *textWriter) WriteByte(c byte) error {
if w.compact && c == '\n' {
c = ' '
}
if !w.compact && w.complete {
w.writeIndent()
}
err := w.w.WriteByte(c)
w.complete = c == '\n'
return err
}
func (w *textWriter) indent() { w.ind++ }
func (w *textWriter) unindent() {
if w.ind == 0 {
log.Print("proto: textWriter unindented too far")
return
}
w.ind--
}
func writeName(w *textWriter, props *Properties) error {
if _, err := w.WriteString(props.OrigName); err != nil {
return err
}
if props.Wire != "group" {
return w.WriteByte(':')
}
return nil
}
func requiresQuotes(u string) bool {
// When type URL contains any characters except [0-9A-Za-z./\-]*, it must be quoted.
for _, ch := range u {
switch {
case ch == '.' || ch == '/' || ch == '_':
continue
case '0' <= ch && ch <= '9':
continue
case 'A' <= ch && ch <= 'Z':
continue
case 'a' <= ch && ch <= 'z':
continue
default:
return true
}
}
return false
}
// isAny reports whether sv is a google.protobuf.Any message
func isAny(sv reflect.Value) bool {
type wkt interface {
XXX_WellKnownType() string
}
t, ok := sv.Addr().Interface().(wkt)
return ok && t.XXX_WellKnownType() == "Any"
}
// writeProto3Any writes an expanded google.protobuf.Any message.
//
// It returns (false, nil) if sv value can't be unmarshaled (e.g. because
// required messages are not linked in).
//
// It returns (true, error) when sv was written in expanded format or an error
// was encountered.
func (tm *TextMarshaler) writeProto3Any(w *textWriter, sv reflect.Value) (bool, error) {
turl := sv.FieldByName("TypeUrl")
val := sv.FieldByName("Value")
if !turl.IsValid() || !val.IsValid() {
return true, errors.New("proto: invalid google.protobuf.Any message")
}
b, ok := val.Interface().([]byte)
if !ok {
return true, errors.New("proto: invalid google.protobuf.Any message")
}
parts := strings.Split(turl.String(), "/")
mt := MessageType(parts[len(parts)-1])
if mt == nil {
return false, nil
}
m := reflect.New(mt.Elem())
if err := Unmarshal(b, m.Interface().(Message)); err != nil {
return false, nil
}
w.Write([]byte("["))
u := turl.String()
if requiresQuotes(u) {
writeString(w, u)
} else {
w.Write([]byte(u))
}
if w.compact {
w.Write([]byte("]:<"))
} else {
w.Write([]byte("]: <\n"))
w.ind++
}
if err := tm.writeStruct(w, m.Elem()); err != nil {
return true, err
}
if w.compact {
w.Write([]byte("> "))
} else {
w.ind--
w.Write([]byte(">\n"))
}
return true, nil
}
func (tm *TextMarshaler) writeStruct(w *textWriter, sv reflect.Value) error {
if tm.ExpandAny && isAny(sv) {
if canExpand, err := tm.writeProto3Any(w, sv); canExpand {
return err
}
}
st := sv.Type()
sprops := GetProperties(st)
for i := 0; i < sv.NumField(); i++ {
fv := sv.Field(i)
props := sprops.Prop[i]
name := st.Field(i).Name
if name == "XXX_NoUnkeyedLiteral" {
continue
}
if strings.HasPrefix(name, "XXX_") {
// There are two XXX_ fields:
// XXX_unrecognized []byte
// XXX_extensions map[int32]proto.Extension
// The first is handled here;
// the second is handled at the bottom of this function.
if name == "XXX_unrecognized" && !fv.IsNil() {
if err := writeUnknownStruct(w, fv.Interface().([]byte)); err != nil {
return err
}
}
continue
}
if fv.Kind() == reflect.Ptr && fv.IsNil() {
// Field not filled in. This could be an optional field or
// a required field that wasn't filled in. Either way, there
// isn't anything we can show for it.
continue
}
if fv.Kind() == reflect.Slice && fv.IsNil() {
// Repeated field that is empty, or a bytes field that is unused.
continue
}
if props.Repeated && fv.Kind() == reflect.Slice {
// Repeated field.
for j := 0; j < fv.Len(); j++ {
if err := writeName(w, props); err != nil {
return err
}
if !w.compact {
if err := w.WriteByte(' '); err != nil {
return err
}
}
v := fv.Index(j)
if v.Kind() == reflect.Ptr && v.IsNil() {
// A nil message in a repeated field is not valid,
// but we can handle that more gracefully than panicking.
if _, err := w.Write([]byte("<nil>\n")); err != nil {
return err
}
continue
}
if err := tm.writeAny(w, v, props); err != nil {
return err
}
if err := w.WriteByte('\n'); err != nil {
return err
}
}
continue
}
if fv.Kind() == reflect.Map {
// Map fields are rendered as a repeated struct with key/value fields.
keys := fv.MapKeys()
sort.Sort(mapKeys(keys))
for _, key := range keys {
val := fv.MapIndex(key)
if err := writeName(w, props); err != nil {
return err
}
if !w.compact {
if err := w.WriteByte(' '); err != nil {
return err
}
}
// open struct
if err := w.WriteByte('<'); err != nil {
return err
}
if !w.compact {
if err := w.WriteByte('\n'); err != nil {
return err
}
}
w.indent()
// key
if _, err := w.WriteString("key:"); err != nil {
return err
}
if !w.compact {
if err := w.WriteByte(' '); err != nil {
return err
}
}
if err := tm.writeAny(w, key, props.MapKeyProp); err != nil {
return err
}
if err := w.WriteByte('\n'); err != nil {
return err
}
// nil values aren't legal, but we can avoid panicking because of them.
if val.Kind() != reflect.Ptr || !val.IsNil() {
// value
if _, err := w.WriteString("value:"); err != nil {
return err
}
if !w.compact {
if err := w.WriteByte(' '); err != nil {
return err
}
}
if err := tm.writeAny(w, val, props.MapValProp); err != nil {
return err
}
if err := w.WriteByte('\n'); err != nil {
return err
}
}
// close struct
w.unindent()
if err := w.WriteByte('>'); err != nil {
return err
}
if err := w.WriteByte('\n'); err != nil {
return err
}
}
continue
}
if props.proto3 && fv.Kind() == reflect.Slice && fv.Len() == 0 {
// empty bytes field
continue
}
if fv.Kind() != reflect.Ptr && fv.Kind() != reflect.Slice {
// proto3 non-repeated scalar field; skip if zero value
if isProto3Zero(fv) {
continue
}
}
if fv.Kind() == reflect.Interface {
// Check if it is a oneof.
if st.Field(i).Tag.Get("protobuf_oneof") != "" {
// fv is nil, or holds a pointer to generated struct.
// That generated struct has exactly one field,
// which has a protobuf struct tag.
if fv.IsNil() {
continue
}
inner := fv.Elem().Elem() // interface -> *T -> T
tag := inner.Type().Field(0).Tag.Get("protobuf")
props = new(Properties) // Overwrite the outer props var, but not its pointee.
props.Parse(tag)
// Write the value in the oneof, not the oneof itself.
fv = inner.Field(0)
// Special case to cope with malformed messages gracefully:
// If the value in the oneof is a nil pointer, don't panic
// in writeAny.
if fv.Kind() == reflect.Ptr && fv.IsNil() {
// Use errors.New so writeAny won't render quotes.
msg := errors.New("/* nil */")
fv = reflect.ValueOf(&msg).Elem()
}
}
}
if err := writeName(w, props); err != nil {
return err
}
if !w.compact {
if err := w.WriteByte(' '); err != nil {
return err
}
}
// Enums have a String method, so writeAny will work fine.
if err := tm.writeAny(w, fv, props); err != nil {
return err
}
if err := w.WriteByte('\n'); err != nil {
return err
}
}
// Extensions (the XXX_extensions field).
pv := sv.Addr()
if _, err := extendable(pv.Interface()); err == nil {
if err := tm.writeExtensions(w, pv); err != nil {
return err
}
}
return nil
}
// writeAny writes an arbitrary field.
func (tm *TextMarshaler) writeAny(w *textWriter, v reflect.Value, props *Properties) error {
v = reflect.Indirect(v)
// Floats have special cases.
if v.Kind() == reflect.Float32 || v.Kind() == reflect.Float64 {
x := v.Float()
var b []byte
switch {
case math.IsInf(x, 1):
b = posInf
case math.IsInf(x, -1):
b = negInf
case math.IsNaN(x):
b = nan
}
if b != nil {
_, err := w.Write(b)
return err
}
// Other values are handled below.
}
// We don't attempt to serialise every possible value type; only those
// that can occur in protocol buffers.
switch v.Kind() {
case reflect.Slice:
// Should only be a []byte; repeated fields are handled in writeStruct.
if err := writeString(w, string(v.Bytes())); err != nil {
return err
}
case reflect.String:
if err := writeString(w, v.String()); err != nil {
return err
}
case reflect.Struct:
// Required/optional group/message.
var bra, ket byte = '<', '>'
if props != nil && props.Wire == "group" {
bra, ket = '{', '}'
}
if err := w.WriteByte(bra); err != nil {
return err
}
if !w.compact {
if err := w.WriteByte('\n'); err != nil {
return err
}
}
w.indent()
if v.CanAddr() {
// Calling v.Interface on a struct causes the reflect package to
// copy the entire struct. This is racy with the new Marshaler
// since we atomically update the XXX_sizecache.
//
// Thus, we retrieve a pointer to the struct if possible to avoid
// a race since v.Interface on the pointer doesn't copy the struct.
//
// If v is not addressable, then we are not worried about a race
// since it implies that the binary Marshaler cannot possibly be
// mutating this value.
v = v.Addr()
}
if etm, ok := v.Interface().(encoding.TextMarshaler); ok {
text, err := etm.MarshalText()
if err != nil {
return err
}
if _, err = w.Write(text); err != nil {
return err
}
} else {
if v.Kind() == reflect.Ptr {
v = v.Elem()
}
if err := tm.writeStruct(w, v); err != nil {
return err
}
}
w.unindent()
if err := w.WriteByte(ket); err != nil {
return err
}
default:
_, err := fmt.Fprint(w, v.Interface())
return err
}
return nil
}
// equivalent to C's isprint.
func isprint(c byte) bool {
return c >= 0x20 && c < 0x7f
}
// writeString writes a string in the protocol buffer text format.
// It is similar to strconv.Quote except we don't use Go escape sequences,
// we treat the string as a byte sequence, and we use octal escapes.
// These differences are to maintain interoperability with the other
// languages' implementations of the text format.
func writeString(w *textWriter, s string) error {
// use WriteByte here to get any needed indent
if err := w.WriteByte('"'); err != nil {
return err
}
// Loop over the bytes, not the runes.
for i := 0; i < len(s); i++ {
var err error
// Divergence from C++: we don't escape apostrophes.
// There's no need to escape them, and the C++ parser
// copes with a naked apostrophe.
switch c := s[i]; c {
case '\n':
_, err = w.w.Write(backslashN)
case '\r':
_, err = w.w.Write(backslashR)
case '\t':
_, err = w.w.Write(backslashT)
case '"':
_, err = w.w.Write(backslashDQ)
case '\\':
_, err = w.w.Write(backslashBS)
default:
if isprint(c) {
err = w.w.WriteByte(c)
} else {
_, err = fmt.Fprintf(w.w, "\\%03o", c)
}
}
if err != nil {
return err
}
}
return w.WriteByte('"')
}
func writeUnknownStruct(w *textWriter, data []byte) (err error) {
if !w.compact {
if _, err := fmt.Fprintf(w, "/* %d unknown bytes */\n", len(data)); err != nil {
return err
}
}
b := NewBuffer(data)
for b.index < len(b.buf) {
x, err := b.DecodeVarint()
if err != nil {
_, err := fmt.Fprintf(w, "/* %v */\n", err)
return err
}
wire, tag := x&7, x>>3
if wire == WireEndGroup {
w.unindent()
if _, err := w.Write(endBraceNewline); err != nil {
return err
}
continue
}
if _, err := fmt.Fprint(w, tag); err != nil {
return err
}
if wire != WireStartGroup {
if err := w.WriteByte(':'); err != nil {
return err
}
}
if !w.compact || wire == WireStartGroup {
if err := w.WriteByte(' '); err != nil {
return err
}
}
switch wire {
case WireBytes:
buf, e := b.DecodeRawBytes(false)
if e == nil {
_, err = fmt.Fprintf(w, "%q", buf)
} else {
_, err = fmt.Fprintf(w, "/* %v */", e)
}
case WireFixed32:
x, err = b.DecodeFixed32()
err = writeUnknownInt(w, x, err)
case WireFixed64:
x, err = b.DecodeFixed64()
err = writeUnknownInt(w, x, err)
case WireStartGroup:
err = w.WriteByte('{')
w.indent()
case WireVarint:
x, err = b.DecodeVarint()
err = writeUnknownInt(w, x, err)
default:
_, err = fmt.Fprintf(w, "/* unknown wire type %d */", wire)
}
if err != nil {
return err
}
if err = w.WriteByte('\n'); err != nil {
return err
}
}
return nil
}
func writeUnknownInt(w *textWriter, x uint64, err error) error {
if err == nil {
_, err = fmt.Fprint(w, x)
} else {
_, err = fmt.Fprintf(w, "/* %v */", err)
}
return err
}
type int32Slice []int32
func (s int32Slice) Len() int { return len(s) }
func (s int32Slice) Less(i, j int) bool { return s[i] < s[j] }
func (s int32Slice) Swap(i, j int) { s[i], s[j] = s[j], s[i] }
// writeExtensions writes all the extensions in pv.
// pv is assumed to be a pointer to a protocol message struct that is extendable.
func (tm *TextMarshaler) writeExtensions(w *textWriter, pv reflect.Value) error {
emap := extensionMaps[pv.Type().Elem()]
ep, _ := extendable(pv.Interface())
// Order the extensions by ID.
// This isn't strictly necessary, but it will give us
// canonical output, which will also make testing easier.
m, mu := ep.extensionsRead()
if m == nil {
return nil
}
mu.Lock()
ids := make([]int32, 0, len(m))
for id := range m {
ids = append(ids, id)
}
sort.Sort(int32Slice(ids))
mu.Unlock()
for _, extNum := range ids {
ext := m[extNum]
var desc *ExtensionDesc
if emap != nil {
desc = emap[extNum]
}
if desc == nil {
// Unknown extension.
if err := writeUnknownStruct(w, ext.enc); err != nil {
return err
}
continue
}
pb, err := GetExtension(ep, desc)
if err != nil {
return fmt.Errorf("failed getting extension: %v", err)
}
// Repeated extensions will appear as a slice.
if !desc.repeated() {
if err := tm.writeExtension(w, desc.Name, pb); err != nil {
return err
}
} else {
v := reflect.ValueOf(pb)
for i := 0; i < v.Len(); i++ {
if err := tm.writeExtension(w, desc.Name, v.Index(i).Interface()); err != nil {
return err
}
}
}
}
return nil
}
func (tm *TextMarshaler) writeExtension(w *textWriter, name string, pb interface{}) error {
if _, err := fmt.Fprintf(w, "[%s]:", name); err != nil {
return err
}
if !w.compact {
if err := w.WriteByte(' '); err != nil {
return err
}
}
if err := tm.writeAny(w, reflect.ValueOf(pb), nil); err != nil {
return err
}
if err := w.WriteByte('\n'); err != nil {
return err
}
return nil
}
func (w *textWriter) writeIndent() {
if !w.complete {
return
}
remain := w.ind * 2
for remain > 0 {
n := remain
if n > len(spaces) {
n = len(spaces)
}
w.w.Write(spaces[:n])
remain -= n
}
w.complete = false
}
// TextMarshaler is a configurable text format marshaler.
type TextMarshaler struct {
Compact bool // use compact text format (one line).
ExpandAny bool // expand google.protobuf.Any messages of known types
}
// Marshal writes a given protocol buffer in text format.
// The only errors returned are from w.
func (tm *TextMarshaler) Marshal(w io.Writer, pb Message) error {
val := reflect.ValueOf(pb)
if pb == nil || val.IsNil() {
w.Write([]byte("<nil>"))
return nil
}
var bw *bufio.Writer
ww, ok := w.(writer)
if !ok {
bw = bufio.NewWriter(w)
ww = bw
}
aw := &textWriter{
w: ww,
complete: true,
compact: tm.Compact,
}
if etm, ok := pb.(encoding.TextMarshaler); ok {
text, err := etm.MarshalText()
if err != nil {
return err
}
if _, err = aw.Write(text); err != nil {
return err
}
if bw != nil {
return bw.Flush()
}
return nil
}
// Dereference the received pointer so we don't have outer < and >.
v := reflect.Indirect(val)
if err := tm.writeStruct(aw, v); err != nil {
return err
}
if bw != nil {
return bw.Flush()
}
return nil
}
// Text is the same as Marshal, but returns the string directly.
func (tm *TextMarshaler) Text(pb Message) string {
var buf bytes.Buffer
tm.Marshal(&buf, pb)
return buf.String()
}
var (
defaultTextMarshaler = TextMarshaler{}
compactTextMarshaler = TextMarshaler{Compact: true}
)
// TODO: consider removing some of the Marshal functions below.
// MarshalText writes a given protocol buffer in text format.
// The only errors returned are from w.
func MarshalText(w io.Writer, pb Message) error { return defaultTextMarshaler.Marshal(w, pb) }
// MarshalTextString is the same as MarshalText, but returns the string directly.
func MarshalTextString(pb Message) string { return defaultTextMarshaler.Text(pb) }
// CompactText writes a given protocol buffer in compact text format (one line).
func CompactText(w io.Writer, pb Message) error { return compactTextMarshaler.Marshal(w, pb) }
// CompactTextString is the same as CompactText, but returns the string directly.
func CompactTextString(pb Message) string { return compactTextMarshaler.Text(pb) }

880
vendor/github.com/golang/protobuf/proto/text_parser.go generated vendored Normal file
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@ -0,0 +1,880 @@
// Go support for Protocol Buffers - Google's data interchange format
//
// Copyright 2010 The Go Authors. All rights reserved.
// https://github.com/golang/protobuf
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
package proto
// Functions for parsing the Text protocol buffer format.
// TODO: message sets.
import (
"encoding"
"errors"
"fmt"
"reflect"
"strconv"
"strings"
"unicode/utf8"
)
// Error string emitted when deserializing Any and fields are already set
const anyRepeatedlyUnpacked = "Any message unpacked multiple times, or %q already set"
type ParseError struct {
Message string
Line int // 1-based line number
Offset int // 0-based byte offset from start of input
}
func (p *ParseError) Error() string {
if p.Line == 1 {
// show offset only for first line
return fmt.Sprintf("line 1.%d: %v", p.Offset, p.Message)
}
return fmt.Sprintf("line %d: %v", p.Line, p.Message)
}
type token struct {
value string
err *ParseError
line int // line number
offset int // byte number from start of input, not start of line
unquoted string // the unquoted version of value, if it was a quoted string
}
func (t *token) String() string {
if t.err == nil {
return fmt.Sprintf("%q (line=%d, offset=%d)", t.value, t.line, t.offset)
}
return fmt.Sprintf("parse error: %v", t.err)
}
type textParser struct {
s string // remaining input
done bool // whether the parsing is finished (success or error)
backed bool // whether back() was called
offset, line int
cur token
}
func newTextParser(s string) *textParser {
p := new(textParser)
p.s = s
p.line = 1
p.cur.line = 1
return p
}
func (p *textParser) errorf(format string, a ...interface{}) *ParseError {
pe := &ParseError{fmt.Sprintf(format, a...), p.cur.line, p.cur.offset}
p.cur.err = pe
p.done = true
return pe
}
// Numbers and identifiers are matched by [-+._A-Za-z0-9]
func isIdentOrNumberChar(c byte) bool {
switch {
case 'A' <= c && c <= 'Z', 'a' <= c && c <= 'z':
return true
case '0' <= c && c <= '9':
return true
}
switch c {
case '-', '+', '.', '_':
return true
}
return false
}
func isWhitespace(c byte) bool {
switch c {
case ' ', '\t', '\n', '\r':
return true
}
return false
}
func isQuote(c byte) bool {
switch c {
case '"', '\'':
return true
}
return false
}
func (p *textParser) skipWhitespace() {
i := 0
for i < len(p.s) && (isWhitespace(p.s[i]) || p.s[i] == '#') {
if p.s[i] == '#' {
// comment; skip to end of line or input
for i < len(p.s) && p.s[i] != '\n' {
i++
}
if i == len(p.s) {
break
}
}
if p.s[i] == '\n' {
p.line++
}
i++
}
p.offset += i
p.s = p.s[i:len(p.s)]
if len(p.s) == 0 {
p.done = true
}
}
func (p *textParser) advance() {
// Skip whitespace
p.skipWhitespace()
if p.done {
return
}
// Start of non-whitespace
p.cur.err = nil
p.cur.offset, p.cur.line = p.offset, p.line
p.cur.unquoted = ""
switch p.s[0] {
case '<', '>', '{', '}', ':', '[', ']', ';', ',', '/':
// Single symbol
p.cur.value, p.s = p.s[0:1], p.s[1:len(p.s)]
case '"', '\'':
// Quoted string
i := 1
for i < len(p.s) && p.s[i] != p.s[0] && p.s[i] != '\n' {
if p.s[i] == '\\' && i+1 < len(p.s) {
// skip escaped char
i++
}
i++
}
if i >= len(p.s) || p.s[i] != p.s[0] {
p.errorf("unmatched quote")
return
}
unq, err := unquoteC(p.s[1:i], rune(p.s[0]))
if err != nil {
p.errorf("invalid quoted string %s: %v", p.s[0:i+1], err)
return
}
p.cur.value, p.s = p.s[0:i+1], p.s[i+1:len(p.s)]
p.cur.unquoted = unq
default:
i := 0
for i < len(p.s) && isIdentOrNumberChar(p.s[i]) {
i++
}
if i == 0 {
p.errorf("unexpected byte %#x", p.s[0])
return
}
p.cur.value, p.s = p.s[0:i], p.s[i:len(p.s)]
}
p.offset += len(p.cur.value)
}
var (
errBadUTF8 = errors.New("proto: bad UTF-8")
)
func unquoteC(s string, quote rune) (string, error) {
// This is based on C++'s tokenizer.cc.
// Despite its name, this is *not* parsing C syntax.
// For instance, "\0" is an invalid quoted string.
// Avoid allocation in trivial cases.
simple := true
for _, r := range s {
if r == '\\' || r == quote {
simple = false
break
}
}
if simple {
return s, nil
}
buf := make([]byte, 0, 3*len(s)/2)
for len(s) > 0 {
r, n := utf8.DecodeRuneInString(s)
if r == utf8.RuneError && n == 1 {
return "", errBadUTF8
}
s = s[n:]
if r != '\\' {
if r < utf8.RuneSelf {
buf = append(buf, byte(r))
} else {
buf = append(buf, string(r)...)
}
continue
}
ch, tail, err := unescape(s)
if err != nil {
return "", err
}
buf = append(buf, ch...)
s = tail
}
return string(buf), nil
}
func unescape(s string) (ch string, tail string, err error) {
r, n := utf8.DecodeRuneInString(s)
if r == utf8.RuneError && n == 1 {
return "", "", errBadUTF8
}
s = s[n:]
switch r {
case 'a':
return "\a", s, nil
case 'b':
return "\b", s, nil
case 'f':
return "\f", s, nil
case 'n':
return "\n", s, nil
case 'r':
return "\r", s, nil
case 't':
return "\t", s, nil
case 'v':
return "\v", s, nil
case '?':
return "?", s, nil // trigraph workaround
case '\'', '"', '\\':
return string(r), s, nil
case '0', '1', '2', '3', '4', '5', '6', '7':
if len(s) < 2 {
return "", "", fmt.Errorf(`\%c requires 2 following digits`, r)
}
ss := string(r) + s[:2]
s = s[2:]
i, err := strconv.ParseUint(ss, 8, 8)
if err != nil {
return "", "", fmt.Errorf(`\%s contains non-octal digits`, ss)
}
return string([]byte{byte(i)}), s, nil
case 'x', 'X', 'u', 'U':
var n int
switch r {
case 'x', 'X':
n = 2
case 'u':
n = 4
case 'U':
n = 8
}
if len(s) < n {
return "", "", fmt.Errorf(`\%c requires %d following digits`, r, n)
}
ss := s[:n]
s = s[n:]
i, err := strconv.ParseUint(ss, 16, 64)
if err != nil {
return "", "", fmt.Errorf(`\%c%s contains non-hexadecimal digits`, r, ss)
}
if r == 'x' || r == 'X' {
return string([]byte{byte(i)}), s, nil
}
if i > utf8.MaxRune {
return "", "", fmt.Errorf(`\%c%s is not a valid Unicode code point`, r, ss)
}
return string(i), s, nil
}
return "", "", fmt.Errorf(`unknown escape \%c`, r)
}
// Back off the parser by one token. Can only be done between calls to next().
// It makes the next advance() a no-op.
func (p *textParser) back() { p.backed = true }
// Advances the parser and returns the new current token.
func (p *textParser) next() *token {
if p.backed || p.done {
p.backed = false
return &p.cur
}
p.advance()
if p.done {
p.cur.value = ""
} else if len(p.cur.value) > 0 && isQuote(p.cur.value[0]) {
// Look for multiple quoted strings separated by whitespace,
// and concatenate them.
cat := p.cur
for {
p.skipWhitespace()
if p.done || !isQuote(p.s[0]) {
break
}
p.advance()
if p.cur.err != nil {
return &p.cur
}
cat.value += " " + p.cur.value
cat.unquoted += p.cur.unquoted
}
p.done = false // parser may have seen EOF, but we want to return cat
p.cur = cat
}
return &p.cur
}
func (p *textParser) consumeToken(s string) error {
tok := p.next()
if tok.err != nil {
return tok.err
}
if tok.value != s {
p.back()
return p.errorf("expected %q, found %q", s, tok.value)
}
return nil
}
// Return a RequiredNotSetError indicating which required field was not set.
func (p *textParser) missingRequiredFieldError(sv reflect.Value) *RequiredNotSetError {
st := sv.Type()
sprops := GetProperties(st)
for i := 0; i < st.NumField(); i++ {
if !isNil(sv.Field(i)) {
continue
}
props := sprops.Prop[i]
if props.Required {
return &RequiredNotSetError{fmt.Sprintf("%v.%v", st, props.OrigName)}
}
}
return &RequiredNotSetError{fmt.Sprintf("%v.<unknown field name>", st)} // should not happen
}
// Returns the index in the struct for the named field, as well as the parsed tag properties.
func structFieldByName(sprops *StructProperties, name string) (int, *Properties, bool) {
i, ok := sprops.decoderOrigNames[name]
if ok {
return i, sprops.Prop[i], true
}
return -1, nil, false
}
// Consume a ':' from the input stream (if the next token is a colon),
// returning an error if a colon is needed but not present.
func (p *textParser) checkForColon(props *Properties, typ reflect.Type) *ParseError {
tok := p.next()
if tok.err != nil {
return tok.err
}
if tok.value != ":" {
// Colon is optional when the field is a group or message.
needColon := true
switch props.Wire {
case "group":
needColon = false
case "bytes":
// A "bytes" field is either a message, a string, or a repeated field;
// those three become *T, *string and []T respectively, so we can check for
// this field being a pointer to a non-string.
if typ.Kind() == reflect.Ptr {
// *T or *string
if typ.Elem().Kind() == reflect.String {
break
}
} else if typ.Kind() == reflect.Slice {
// []T or []*T
if typ.Elem().Kind() != reflect.Ptr {
break
}
} else if typ.Kind() == reflect.String {
// The proto3 exception is for a string field,
// which requires a colon.
break
}
needColon = false
}
if needColon {
return p.errorf("expected ':', found %q", tok.value)
}
p.back()
}
return nil
}
func (p *textParser) readStruct(sv reflect.Value, terminator string) error {
st := sv.Type()
sprops := GetProperties(st)
reqCount := sprops.reqCount
var reqFieldErr error
fieldSet := make(map[string]bool)
// A struct is a sequence of "name: value", terminated by one of
// '>' or '}', or the end of the input. A name may also be
// "[extension]" or "[type/url]".
//
// The whole struct can also be an expanded Any message, like:
// [type/url] < ... struct contents ... >
for {
tok := p.next()
if tok.err != nil {
return tok.err
}
if tok.value == terminator {
break
}
if tok.value == "[" {
// Looks like an extension or an Any.
//
// TODO: Check whether we need to handle
// namespace rooted names (e.g. ".something.Foo").
extName, err := p.consumeExtName()
if err != nil {
return err
}
if s := strings.LastIndex(extName, "/"); s >= 0 {
// If it contains a slash, it's an Any type URL.
messageName := extName[s+1:]
mt := MessageType(messageName)
if mt == nil {
return p.errorf("unrecognized message %q in google.protobuf.Any", messageName)
}
tok = p.next()
if tok.err != nil {
return tok.err
}
// consume an optional colon
if tok.value == ":" {
tok = p.next()
if tok.err != nil {
return tok.err
}
}
var terminator string
switch tok.value {
case "<":
terminator = ">"
case "{":
terminator = "}"
default:
return p.errorf("expected '{' or '<', found %q", tok.value)
}
v := reflect.New(mt.Elem())
if pe := p.readStruct(v.Elem(), terminator); pe != nil {
return pe
}
b, err := Marshal(v.Interface().(Message))
if err != nil {
return p.errorf("failed to marshal message of type %q: %v", messageName, err)
}
if fieldSet["type_url"] {
return p.errorf(anyRepeatedlyUnpacked, "type_url")
}
if fieldSet["value"] {
return p.errorf(anyRepeatedlyUnpacked, "value")
}
sv.FieldByName("TypeUrl").SetString(extName)
sv.FieldByName("Value").SetBytes(b)
fieldSet["type_url"] = true
fieldSet["value"] = true
continue
}
var desc *ExtensionDesc
// This could be faster, but it's functional.
// TODO: Do something smarter than a linear scan.
for _, d := range RegisteredExtensions(reflect.New(st).Interface().(Message)) {
if d.Name == extName {
desc = d
break
}
}
if desc == nil {
return p.errorf("unrecognized extension %q", extName)
}
props := &Properties{}
props.Parse(desc.Tag)
typ := reflect.TypeOf(desc.ExtensionType)
if err := p.checkForColon(props, typ); err != nil {
return err
}
rep := desc.repeated()
// Read the extension structure, and set it in
// the value we're constructing.
var ext reflect.Value
if !rep {
ext = reflect.New(typ).Elem()
} else {
ext = reflect.New(typ.Elem()).Elem()
}
if err := p.readAny(ext, props); err != nil {
if _, ok := err.(*RequiredNotSetError); !ok {
return err
}
reqFieldErr = err
}
ep := sv.Addr().Interface().(Message)
if !rep {
SetExtension(ep, desc, ext.Interface())
} else {
old, err := GetExtension(ep, desc)
var sl reflect.Value
if err == nil {
sl = reflect.ValueOf(old) // existing slice
} else {
sl = reflect.MakeSlice(typ, 0, 1)
}
sl = reflect.Append(sl, ext)
SetExtension(ep, desc, sl.Interface())
}
if err := p.consumeOptionalSeparator(); err != nil {
return err
}
continue
}
// This is a normal, non-extension field.
name := tok.value
var dst reflect.Value
fi, props, ok := structFieldByName(sprops, name)
if ok {
dst = sv.Field(fi)
} else if oop, ok := sprops.OneofTypes[name]; ok {
// It is a oneof.
props = oop.Prop
nv := reflect.New(oop.Type.Elem())
dst = nv.Elem().Field(0)
field := sv.Field(oop.Field)
if !field.IsNil() {
return p.errorf("field '%s' would overwrite already parsed oneof '%s'", name, sv.Type().Field(oop.Field).Name)
}
field.Set(nv)
}
if !dst.IsValid() {
return p.errorf("unknown field name %q in %v", name, st)
}
if dst.Kind() == reflect.Map {
// Consume any colon.
if err := p.checkForColon(props, dst.Type()); err != nil {
return err
}
// Construct the map if it doesn't already exist.
if dst.IsNil() {
dst.Set(reflect.MakeMap(dst.Type()))
}
key := reflect.New(dst.Type().Key()).Elem()
val := reflect.New(dst.Type().Elem()).Elem()
// The map entry should be this sequence of tokens:
// < key : KEY value : VALUE >
// However, implementations may omit key or value, and technically
// we should support them in any order. See b/28924776 for a time
// this went wrong.
tok := p.next()
var terminator string
switch tok.value {
case "<":
terminator = ">"
case "{":
terminator = "}"
default:
return p.errorf("expected '{' or '<', found %q", tok.value)
}
for {
tok := p.next()
if tok.err != nil {
return tok.err
}
if tok.value == terminator {
break
}
switch tok.value {
case "key":
if err := p.consumeToken(":"); err != nil {
return err
}
if err := p.readAny(key, props.MapKeyProp); err != nil {
return err
}
if err := p.consumeOptionalSeparator(); err != nil {
return err
}
case "value":
if err := p.checkForColon(props.MapValProp, dst.Type().Elem()); err != nil {
return err
}
if err := p.readAny(val, props.MapValProp); err != nil {
return err
}
if err := p.consumeOptionalSeparator(); err != nil {
return err
}
default:
p.back()
return p.errorf(`expected "key", "value", or %q, found %q`, terminator, tok.value)
}
}
dst.SetMapIndex(key, val)
continue
}
// Check that it's not already set if it's not a repeated field.
if !props.Repeated && fieldSet[name] {
return p.errorf("non-repeated field %q was repeated", name)
}
if err := p.checkForColon(props, dst.Type()); err != nil {
return err
}
// Parse into the field.
fieldSet[name] = true
if err := p.readAny(dst, props); err != nil {
if _, ok := err.(*RequiredNotSetError); !ok {
return err
}
reqFieldErr = err
}
if props.Required {
reqCount--
}
if err := p.consumeOptionalSeparator(); err != nil {
return err
}
}
if reqCount > 0 {
return p.missingRequiredFieldError(sv)
}
return reqFieldErr
}
// consumeExtName consumes extension name or expanded Any type URL and the
// following ']'. It returns the name or URL consumed.
func (p *textParser) consumeExtName() (string, error) {
tok := p.next()
if tok.err != nil {
return "", tok.err
}
// If extension name or type url is quoted, it's a single token.
if len(tok.value) > 2 && isQuote(tok.value[0]) && tok.value[len(tok.value)-1] == tok.value[0] {
name, err := unquoteC(tok.value[1:len(tok.value)-1], rune(tok.value[0]))
if err != nil {
return "", err
}
return name, p.consumeToken("]")
}
// Consume everything up to "]"
var parts []string
for tok.value != "]" {
parts = append(parts, tok.value)
tok = p.next()
if tok.err != nil {
return "", p.errorf("unrecognized type_url or extension name: %s", tok.err)
}
if p.done && tok.value != "]" {
return "", p.errorf("unclosed type_url or extension name")
}
}
return strings.Join(parts, ""), nil
}
// consumeOptionalSeparator consumes an optional semicolon or comma.
// It is used in readStruct to provide backward compatibility.
func (p *textParser) consumeOptionalSeparator() error {
tok := p.next()
if tok.err != nil {
return tok.err
}
if tok.value != ";" && tok.value != "," {
p.back()
}
return nil
}
func (p *textParser) readAny(v reflect.Value, props *Properties) error {
tok := p.next()
if tok.err != nil {
return tok.err
}
if tok.value == "" {
return p.errorf("unexpected EOF")
}
switch fv := v; fv.Kind() {
case reflect.Slice:
at := v.Type()
if at.Elem().Kind() == reflect.Uint8 {
// Special case for []byte
if tok.value[0] != '"' && tok.value[0] != '\'' {
// Deliberately written out here, as the error after
// this switch statement would write "invalid []byte: ...",
// which is not as user-friendly.
return p.errorf("invalid string: %v", tok.value)
}
bytes := []byte(tok.unquoted)
fv.Set(reflect.ValueOf(bytes))
return nil
}
// Repeated field.
if tok.value == "[" {
// Repeated field with list notation, like [1,2,3].
for {
fv.Set(reflect.Append(fv, reflect.New(at.Elem()).Elem()))
err := p.readAny(fv.Index(fv.Len()-1), props)
if err != nil {
return err
}
tok := p.next()
if tok.err != nil {
return tok.err
}
if tok.value == "]" {
break
}
if tok.value != "," {
return p.errorf("Expected ']' or ',' found %q", tok.value)
}
}
return nil
}
// One value of the repeated field.
p.back()
fv.Set(reflect.Append(fv, reflect.New(at.Elem()).Elem()))
return p.readAny(fv.Index(fv.Len()-1), props)
case reflect.Bool:
// true/1/t/True or false/f/0/False.
switch tok.value {
case "true", "1", "t", "True":
fv.SetBool(true)
return nil
case "false", "0", "f", "False":
fv.SetBool(false)
return nil
}
case reflect.Float32, reflect.Float64:
v := tok.value
// Ignore 'f' for compatibility with output generated by C++, but don't
// remove 'f' when the value is "-inf" or "inf".
if strings.HasSuffix(v, "f") && tok.value != "-inf" && tok.value != "inf" {
v = v[:len(v)-1]
}
if f, err := strconv.ParseFloat(v, fv.Type().Bits()); err == nil {
fv.SetFloat(f)
return nil
}
case reflect.Int32:
if x, err := strconv.ParseInt(tok.value, 0, 32); err == nil {
fv.SetInt(x)
return nil
}
if len(props.Enum) == 0 {
break
}
m, ok := enumValueMaps[props.Enum]
if !ok {
break
}
x, ok := m[tok.value]
if !ok {
break
}
fv.SetInt(int64(x))
return nil
case reflect.Int64:
if x, err := strconv.ParseInt(tok.value, 0, 64); err == nil {
fv.SetInt(x)
return nil
}
case reflect.Ptr:
// A basic field (indirected through pointer), or a repeated message/group
p.back()
fv.Set(reflect.New(fv.Type().Elem()))
return p.readAny(fv.Elem(), props)
case reflect.String:
if tok.value[0] == '"' || tok.value[0] == '\'' {
fv.SetString(tok.unquoted)
return nil
}
case reflect.Struct:
var terminator string
switch tok.value {
case "{":
terminator = "}"
case "<":
terminator = ">"
default:
return p.errorf("expected '{' or '<', found %q", tok.value)
}
// TODO: Handle nested messages which implement encoding.TextUnmarshaler.
return p.readStruct(fv, terminator)
case reflect.Uint32:
if x, err := strconv.ParseUint(tok.value, 0, 32); err == nil {
fv.SetUint(uint64(x))
return nil
}
case reflect.Uint64:
if x, err := strconv.ParseUint(tok.value, 0, 64); err == nil {
fv.SetUint(x)
return nil
}
}
return p.errorf("invalid %v: %v", v.Type(), tok.value)
}
// UnmarshalText reads a protocol buffer in Text format. UnmarshalText resets pb
// before starting to unmarshal, so any existing data in pb is always removed.
// If a required field is not set and no other error occurs,
// UnmarshalText returns *RequiredNotSetError.
func UnmarshalText(s string, pb Message) error {
if um, ok := pb.(encoding.TextUnmarshaler); ok {
return um.UnmarshalText([]byte(s))
}
pb.Reset()
v := reflect.ValueOf(pb)
return newTextParser(s).readStruct(v.Elem(), "")
}

9
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@ -0,0 +1,9 @@
(The MIT License)
Copyright (c) 2017 marvin + konsorten GmbH (open-source@konsorten.de)
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the 'Software'), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

40
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# Windows Terminal Sequences
This library allow for enabling Windows terminal color support for Go.
See [Console Virtual Terminal Sequences](https://docs.microsoft.com/en-us/windows/console/console-virtual-terminal-sequences) for details.
## Usage
```go
import (
"syscall"
sequences "github.com/konsorten/go-windows-terminal-sequences"
)
func main() {
sequences.EnableVirtualTerminalProcessing(syscall.Stdout, true)
}
```
## Authors
The tool is sponsored by the [marvin + konsorten GmbH](http://www.konsorten.de).
We thank all the authors who provided code to this library:
* Felix Kollmann
## License
(The MIT License)
Copyright (c) 2018 marvin + konsorten GmbH (open-source@konsorten.de)
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the 'Software'), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

1
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module github.com/konsorten/go-windows-terminal-sequences

36
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// +build windows
package sequences
import (
"syscall"
"unsafe"
)
var (
kernel32Dll *syscall.LazyDLL = syscall.NewLazyDLL("Kernel32.dll")
setConsoleMode *syscall.LazyProc = kernel32Dll.NewProc("SetConsoleMode")
)
func EnableVirtualTerminalProcessing(stream syscall.Handle, enable bool) error {
const ENABLE_VIRTUAL_TERMINAL_PROCESSING uint32 = 0x4
var mode uint32
err := syscall.GetConsoleMode(syscall.Stdout, &mode)
if err != nil {
return err
}
if enable {
mode |= ENABLE_VIRTUAL_TERMINAL_PROCESSING
} else {
mode &^= ENABLE_VIRTUAL_TERMINAL_PROCESSING
}
ret, _, err := setConsoleMode.Call(uintptr(unsafe.Pointer(stream)), uintptr(mode))
if ret == 0 {
return err
}
return nil
}

2
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logrus
vendor

51
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language: go
env:
- GOMAXPROCS=4 GORACE=halt_on_error=1
matrix:
include:
- go: 1.10.x
install:
- go get github.com/stretchr/testify/assert
- go get golang.org/x/crypto/ssh/terminal
- go get golang.org/x/sys/unix
- go get golang.org/x/sys/windows
script:
- go test -race -v ./...
- go: 1.11.x
env: GO111MODULE=on
install:
- go mod download
script:
- go test -race -v ./...
- go: 1.11.x
env: GO111MODULE=off
install:
- go get github.com/stretchr/testify/assert
- go get golang.org/x/crypto/ssh/terminal
- go get golang.org/x/sys/unix
- go get golang.org/x/sys/windows
script:
- go test -race -v ./...
- go: 1.10.x
install:
- go get github.com/stretchr/testify/assert
- go get golang.org/x/crypto/ssh/terminal
- go get golang.org/x/sys/unix
- go get golang.org/x/sys/windows
script:
- go test -race -v -tags appengine ./...
- go: 1.11.x
env: GO111MODULE=on
install:
- go mod download
script:
- go test -race -v -tags appengine ./...
- go: 1.11.x
env: GO111MODULE=off
install:
- go get github.com/stretchr/testify/assert
- go get golang.org/x/crypto/ssh/terminal
- go get golang.org/x/sys/unix
- go get golang.org/x/sys/windows
script:
- go test -race -v -tags appengine ./...

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# 1.2.0
This new release introduces:
* A new method `SetReportCaller` in the `Logger` to enable the file, line and calling function from which the trace has been issued
* A new trace level named `Trace` whose level is below `Debug`
* A configurable exit function to be called upon a Fatal trace
* The `Level` object now implements `encoding.TextUnmarshaler` interface
# 1.1.1
This is a bug fix release.
* fix the build break on Solaris
* don't drop a whole trace in JSONFormatter when a field param is a function pointer which can not be serialized
# 1.1.0
This new release introduces:
* several fixes:
* a fix for a race condition on entry formatting
* proper cleanup of previously used entries before putting them back in the pool
* the extra new line at the end of message in text formatter has been removed
* a new global public API to check if a level is activated: IsLevelEnabled
* the following methods have been added to the Logger object
* IsLevelEnabled
* SetFormatter
* SetOutput
* ReplaceHooks
* introduction of go module
* an indent configuration for the json formatter
* output colour support for windows
* the field sort function is now configurable for text formatter
* the CLICOLOR and CLICOLOR\_FORCE environment variable support in text formater
# 1.0.6
This new release introduces:
* a new api WithTime which allows to easily force the time of the log entry
which is mostly useful for logger wrapper
* a fix reverting the immutability of the entry given as parameter to the hooks
a new configuration field of the json formatter in order to put all the fields
in a nested dictionnary
* a new SetOutput method in the Logger
* a new configuration of the textformatter to configure the name of the default keys
* a new configuration of the text formatter to disable the level truncation
# 1.0.5
* Fix hooks race (#707)
* Fix panic deadlock (#695)
# 1.0.4
* Fix race when adding hooks (#612)
* Fix terminal check in AppEngine (#635)
# 1.0.3
* Replace example files with testable examples
# 1.0.2
* bug: quote non-string values in text formatter (#583)
* Make (*Logger) SetLevel a public method
# 1.0.1
* bug: fix escaping in text formatter (#575)
# 1.0.0
* Officially changed name to lower-case
* bug: colors on Windows 10 (#541)
* bug: fix race in accessing level (#512)
# 0.11.5
* feature: add writer and writerlevel to entry (#372)
# 0.11.4
* bug: fix undefined variable on solaris (#493)
# 0.11.3
* formatter: configure quoting of empty values (#484)
* formatter: configure quoting character (default is `"`) (#484)
* bug: fix not importing io correctly in non-linux environments (#481)
# 0.11.2
* bug: fix windows terminal detection (#476)
# 0.11.1
* bug: fix tty detection with custom out (#471)
# 0.11.0
* performance: Use bufferpool to allocate (#370)
* terminal: terminal detection for app-engine (#343)
* feature: exit handler (#375)
# 0.10.0
* feature: Add a test hook (#180)
* feature: `ParseLevel` is now case-insensitive (#326)
* feature: `FieldLogger` interface that generalizes `Logger` and `Entry` (#308)
* performance: avoid re-allocations on `WithFields` (#335)
# 0.9.0
* logrus/text_formatter: don't emit empty msg
* logrus/hooks/airbrake: move out of main repository
* logrus/hooks/sentry: move out of main repository
* logrus/hooks/papertrail: move out of main repository
* logrus/hooks/bugsnag: move out of main repository
* logrus/core: run tests with `-race`
* logrus/core: detect TTY based on `stderr`
* logrus/core: support `WithError` on logger
* logrus/core: Solaris support
# 0.8.7
* logrus/core: fix possible race (#216)
* logrus/doc: small typo fixes and doc improvements
# 0.8.6
* hooks/raven: allow passing an initialized client
# 0.8.5
* logrus/core: revert #208
# 0.8.4
* formatter/text: fix data race (#218)
# 0.8.3
* logrus/core: fix entry log level (#208)
* logrus/core: improve performance of text formatter by 40%
* logrus/core: expose `LevelHooks` type
* logrus/core: add support for DragonflyBSD and NetBSD
* formatter/text: print structs more verbosely
# 0.8.2
* logrus: fix more Fatal family functions
# 0.8.1
* logrus: fix not exiting on `Fatalf` and `Fatalln`
# 0.8.0
* logrus: defaults to stderr instead of stdout
* hooks/sentry: add special field for `*http.Request`
* formatter/text: ignore Windows for colors
# 0.7.3
* formatter/\*: allow configuration of timestamp layout
# 0.7.2
* formatter/text: Add configuration option for time format (#158)

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The MIT License (MIT)
Copyright (c) 2014 Simon Eskildsen
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.

493
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# Logrus <img src="http://i.imgur.com/hTeVwmJ.png" width="40" height="40" alt=":walrus:" class="emoji" title=":walrus:"/>&nbsp;[![Build Status](https://travis-ci.org/sirupsen/logrus.svg?branch=master)](https://travis-ci.org/sirupsen/logrus)&nbsp;[![GoDoc](https://godoc.org/github.com/sirupsen/logrus?status.svg)](https://godoc.org/github.com/sirupsen/logrus)
Logrus is a structured logger for Go (golang), completely API compatible with
the standard library logger.
**Seeing weird case-sensitive problems?** It's in the past been possible to
import Logrus as both upper- and lower-case. Due to the Go package environment,
this caused issues in the community and we needed a standard. Some environments
experienced problems with the upper-case variant, so the lower-case was decided.
Everything using `logrus` will need to use the lower-case:
`github.com/sirupsen/logrus`. Any package that isn't, should be changed.
To fix Glide, see [these
comments](https://github.com/sirupsen/logrus/issues/553#issuecomment-306591437).
For an in-depth explanation of the casing issue, see [this
comment](https://github.com/sirupsen/logrus/issues/570#issuecomment-313933276).
**Are you interested in assisting in maintaining Logrus?** Currently I have a
lot of obligations, and I am unable to provide Logrus with the maintainership it
needs. If you'd like to help, please reach out to me at `simon at author's
username dot com`.
Nicely color-coded in development (when a TTY is attached, otherwise just
plain text):
![Colored](http://i.imgur.com/PY7qMwd.png)
With `log.SetFormatter(&log.JSONFormatter{})`, for easy parsing by logstash
or Splunk:
```json
{"animal":"walrus","level":"info","msg":"A group of walrus emerges from the
ocean","size":10,"time":"2014-03-10 19:57:38.562264131 -0400 EDT"}
{"level":"warning","msg":"The group's number increased tremendously!",
"number":122,"omg":true,"time":"2014-03-10 19:57:38.562471297 -0400 EDT"}
{"animal":"walrus","level":"info","msg":"A giant walrus appears!",
"size":10,"time":"2014-03-10 19:57:38.562500591 -0400 EDT"}
{"animal":"walrus","level":"info","msg":"Tremendously sized cow enters the ocean.",
"size":9,"time":"2014-03-10 19:57:38.562527896 -0400 EDT"}
{"level":"fatal","msg":"The ice breaks!","number":100,"omg":true,
"time":"2014-03-10 19:57:38.562543128 -0400 EDT"}
```
With the default `log.SetFormatter(&log.TextFormatter{})` when a TTY is not
attached, the output is compatible with the
[logfmt](http://godoc.org/github.com/kr/logfmt) format:
```text
time="2015-03-26T01:27:38-04:00" level=debug msg="Started observing beach" animal=walrus number=8
time="2015-03-26T01:27:38-04:00" level=info msg="A group of walrus emerges from the ocean" animal=walrus size=10
time="2015-03-26T01:27:38-04:00" level=warning msg="The group's number increased tremendously!" number=122 omg=true
time="2015-03-26T01:27:38-04:00" level=debug msg="Temperature changes" temperature=-4
time="2015-03-26T01:27:38-04:00" level=panic msg="It's over 9000!" animal=orca size=9009
time="2015-03-26T01:27:38-04:00" level=fatal msg="The ice breaks!" err=&{0x2082280c0 map[animal:orca size:9009] 2015-03-26 01:27:38.441574009 -0400 EDT panic It's over 9000!} number=100 omg=true
```
To ensure this behaviour even if a TTY is attached, set your formatter as follows:
```go
log.SetFormatter(&log.TextFormatter{
DisableColors: true,
FullTimestamp: true,
})
```
#### Logging Method Name
If you wish to add the calling method as a field, instruct the logger via:
```go
log.SetReportCaller(true)
```
This adds the caller as 'method' like so:
```json
{"animal":"penguin","level":"fatal","method":"github.com/sirupsen/arcticcreatures.migrate","msg":"a penguin swims by",
"time":"2014-03-10 19:57:38.562543129 -0400 EDT"}
```
```text
time="2015-03-26T01:27:38-04:00" level=fatal method=github.com/sirupsen/arcticcreatures.migrate msg="a penguin swims by" animal=penguin
```
Note that this does add measurable overhead - the cost will depend on the version of Go, but is
between 20 and 40% in recent tests with 1.6 and 1.7. You can validate this in your
environment via benchmarks:
```
go test -bench=.*CallerTracing
```
#### Case-sensitivity
The organization's name was changed to lower-case--and this will not be changed
back. If you are getting import conflicts due to case sensitivity, please use
the lower-case import: `github.com/sirupsen/logrus`.
#### Example
The simplest way to use Logrus is simply the package-level exported logger:
```go
package main
import (
log "github.com/sirupsen/logrus"
)
func main() {
log.WithFields(log.Fields{
"animal": "walrus",
}).Info("A walrus appears")
}
```
Note that it's completely api-compatible with the stdlib logger, so you can
replace your `log` imports everywhere with `log "github.com/sirupsen/logrus"`
and you'll now have the flexibility of Logrus. You can customize it all you
want:
```go
package main
import (
"os"
log "github.com/sirupsen/logrus"
)
func init() {
// Log as JSON instead of the default ASCII formatter.
log.SetFormatter(&log.JSONFormatter{})
// Output to stdout instead of the default stderr
// Can be any io.Writer, see below for File example
log.SetOutput(os.Stdout)
// Only log the warning severity or above.
log.SetLevel(log.WarnLevel)
}
func main() {
log.WithFields(log.Fields{
"animal": "walrus",
"size": 10,
}).Info("A group of walrus emerges from the ocean")
log.WithFields(log.Fields{
"omg": true,
"number": 122,
}).Warn("The group's number increased tremendously!")
log.WithFields(log.Fields{
"omg": true,
"number": 100,
}).Fatal("The ice breaks!")
// A common pattern is to re-use fields between logging statements by re-using
// the logrus.Entry returned from WithFields()
contextLogger := log.WithFields(log.Fields{
"common": "this is a common field",
"other": "I also should be logged always",
})
contextLogger.Info("I'll be logged with common and other field")
contextLogger.Info("Me too")
}
```
For more advanced usage such as logging to multiple locations from the same
application, you can also create an instance of the `logrus` Logger:
```go
package main
import (
"os"
"github.com/sirupsen/logrus"
)
// Create a new instance of the logger. You can have any number of instances.
var log = logrus.New()
func main() {
// The API for setting attributes is a little different than the package level
// exported logger. See Godoc.
log.Out = os.Stdout
// You could set this to any `io.Writer` such as a file
// file, err := os.OpenFile("logrus.log", os.O_CREATE|os.O_WRONLY, 0666)
// if err == nil {
// log.Out = file
// } else {
// log.Info("Failed to log to file, using default stderr")
// }
log.WithFields(logrus.Fields{
"animal": "walrus",
"size": 10,
}).Info("A group of walrus emerges from the ocean")
}
```
#### Fields
Logrus encourages careful, structured logging through logging fields instead of
long, unparseable error messages. For example, instead of: `log.Fatalf("Failed
to send event %s to topic %s with key %d")`, you should log the much more
discoverable:
```go
log.WithFields(log.Fields{
"event": event,
"topic": topic,
"key": key,
}).Fatal("Failed to send event")
```
We've found this API forces you to think about logging in a way that produces
much more useful logging messages. We've been in countless situations where just
a single added field to a log statement that was already there would've saved us
hours. The `WithFields` call is optional.
In general, with Logrus using any of the `printf`-family functions should be
seen as a hint you should add a field, however, you can still use the
`printf`-family functions with Logrus.
#### Default Fields
Often it's helpful to have fields _always_ attached to log statements in an
application or parts of one. For example, you may want to always log the
`request_id` and `user_ip` in the context of a request. Instead of writing
`log.WithFields(log.Fields{"request_id": request_id, "user_ip": user_ip})` on
every line, you can create a `logrus.Entry` to pass around instead:
```go
requestLogger := log.WithFields(log.Fields{"request_id": request_id, "user_ip": user_ip})
requestLogger.Info("something happened on that request") # will log request_id and user_ip
requestLogger.Warn("something not great happened")
```
#### Hooks
You can add hooks for logging levels. For example to send errors to an exception
tracking service on `Error`, `Fatal` and `Panic`, info to StatsD or log to
multiple places simultaneously, e.g. syslog.
Logrus comes with [built-in hooks](hooks/). Add those, or your custom hook, in
`init`:
```go
import (
log "github.com/sirupsen/logrus"
"gopkg.in/gemnasium/logrus-airbrake-hook.v2" // the package is named "airbrake"
logrus_syslog "github.com/sirupsen/logrus/hooks/syslog"
"log/syslog"
)
func init() {
// Use the Airbrake hook to report errors that have Error severity or above to
// an exception tracker. You can create custom hooks, see the Hooks section.
log.AddHook(airbrake.NewHook(123, "xyz", "production"))
hook, err := logrus_syslog.NewSyslogHook("udp", "localhost:514", syslog.LOG_INFO, "")
if err != nil {
log.Error("Unable to connect to local syslog daemon")
} else {
log.AddHook(hook)
}
}
```
Note: Syslog hook also support connecting to local syslog (Ex. "/dev/log" or "/var/run/syslog" or "/var/run/log"). For the detail, please check the [syslog hook README](hooks/syslog/README.md).
A list of currently known of service hook can be found in this wiki [page](https://github.com/sirupsen/logrus/wiki/Hooks)
#### Level logging
Logrus has seven logging levels: Trace, Debug, Info, Warning, Error, Fatal and Panic.
```go
log.Trace("Something very low level.")
log.Debug("Useful debugging information.")
log.Info("Something noteworthy happened!")
log.Warn("You should probably take a look at this.")
log.Error("Something failed but I'm not quitting.")
// Calls os.Exit(1) after logging
log.Fatal("Bye.")
// Calls panic() after logging
log.Panic("I'm bailing.")
```
You can set the logging level on a `Logger`, then it will only log entries with
that severity or anything above it:
```go
// Will log anything that is info or above (warn, error, fatal, panic). Default.
log.SetLevel(log.InfoLevel)
```
It may be useful to set `log.Level = logrus.DebugLevel` in a debug or verbose
environment if your application has that.
#### Entries
Besides the fields added with `WithField` or `WithFields` some fields are
automatically added to all logging events:
1. `time`. The timestamp when the entry was created.
2. `msg`. The logging message passed to `{Info,Warn,Error,Fatal,Panic}` after
the `AddFields` call. E.g. `Failed to send event.`
3. `level`. The logging level. E.g. `info`.
#### Environments
Logrus has no notion of environment.
If you wish for hooks and formatters to only be used in specific environments,
you should handle that yourself. For example, if your application has a global
variable `Environment`, which is a string representation of the environment you
could do:
```go
import (
log "github.com/sirupsen/logrus"
)
init() {
// do something here to set environment depending on an environment variable
// or command-line flag
if Environment == "production" {
log.SetFormatter(&log.JSONFormatter{})
} else {
// The TextFormatter is default, you don't actually have to do this.
log.SetFormatter(&log.TextFormatter{})
}
}
```
This configuration is how `logrus` was intended to be used, but JSON in
production is mostly only useful if you do log aggregation with tools like
Splunk or Logstash.
#### Formatters
The built-in logging formatters are:
* `logrus.TextFormatter`. Logs the event in colors if stdout is a tty, otherwise
without colors.
* *Note:* to force colored output when there is no TTY, set the `ForceColors`
field to `true`. To force no colored output even if there is a TTY set the
`DisableColors` field to `true`. For Windows, see
[github.com/mattn/go-colorable](https://github.com/mattn/go-colorable).
* When colors are enabled, levels are truncated to 4 characters by default. To disable
truncation set the `DisableLevelTruncation` field to `true`.
* All options are listed in the [generated docs](https://godoc.org/github.com/sirupsen/logrus#TextFormatter).
* `logrus.JSONFormatter`. Logs fields as JSON.
* All options are listed in the [generated docs](https://godoc.org/github.com/sirupsen/logrus#JSONFormatter).
Third party logging formatters:
* [`FluentdFormatter`](https://github.com/joonix/log). Formats entries that can be parsed by Kubernetes and Google Container Engine.
* [`logstash`](https://github.com/bshuster-repo/logrus-logstash-hook). Logs fields as [Logstash](http://logstash.net) Events.
* [`prefixed`](https://github.com/x-cray/logrus-prefixed-formatter). Displays log entry source along with alternative layout.
* [`zalgo`](https://github.com/aybabtme/logzalgo). Invoking the P͉̫o̳̼̊w̖͈̰͎e̬͔̭͂r͚̼̹̲ ̫͓͉̳͈ō̠͕͖̚f̝͍̠ ͕̲̞͖͑Z̖̫̤̫ͪa͉̬͈̗l͖͎g̳̥o̰̥̅!̣͔̲̻͊̄ ̙̘̦̹̦.
You can define your formatter by implementing the `Formatter` interface,
requiring a `Format` method. `Format` takes an `*Entry`. `entry.Data` is a
`Fields` type (`map[string]interface{}`) with all your fields as well as the
default ones (see Entries section above):
```go
type MyJSONFormatter struct {
}
log.SetFormatter(new(MyJSONFormatter))
func (f *MyJSONFormatter) Format(entry *Entry) ([]byte, error) {
// Note this doesn't include Time, Level and Message which are available on
// the Entry. Consult `godoc` on information about those fields or read the
// source of the official loggers.
serialized, err := json.Marshal(entry.Data)
if err != nil {
return nil, fmt.Errorf("Failed to marshal fields to JSON, %v", err)
}
return append(serialized, '\n'), nil
}
```
#### Logger as an `io.Writer`
Logrus can be transformed into an `io.Writer`. That writer is the end of an `io.Pipe` and it is your responsibility to close it.
```go
w := logger.Writer()
defer w.Close()
srv := http.Server{
// create a stdlib log.Logger that writes to
// logrus.Logger.
ErrorLog: log.New(w, "", 0),
}
```
Each line written to that writer will be printed the usual way, using formatters
and hooks. The level for those entries is `info`.
This means that we can override the standard library logger easily:
```go
logger := logrus.New()
logger.Formatter = &logrus.JSONFormatter{}
// Use logrus for standard log output
// Note that `log` here references stdlib's log
// Not logrus imported under the name `log`.
log.SetOutput(logger.Writer())
```
#### Rotation
Log rotation is not provided with Logrus. Log rotation should be done by an
external program (like `logrotate(8)`) that can compress and delete old log
entries. It should not be a feature of the application-level logger.
#### Tools
| Tool | Description |
| ---- | ----------- |
|[Logrus Mate](https://github.com/gogap/logrus_mate)|Logrus mate is a tool for Logrus to manage loggers, you can initial logger's level, hook and formatter by config file, the logger will generated with different config at different environment.|
|[Logrus Viper Helper](https://github.com/heirko/go-contrib/tree/master/logrusHelper)|An Helper around Logrus to wrap with spf13/Viper to load configuration with fangs! And to simplify Logrus configuration use some behavior of [Logrus Mate](https://github.com/gogap/logrus_mate). [sample](https://github.com/heirko/iris-contrib/blob/master/middleware/logrus-logger/example) |
#### Testing
Logrus has a built in facility for asserting the presence of log messages. This is implemented through the `test` hook and provides:
* decorators for existing logger (`test.NewLocal` and `test.NewGlobal`) which basically just add the `test` hook
* a test logger (`test.NewNullLogger`) that just records log messages (and does not output any):
```go
import(
"github.com/sirupsen/logrus"
"github.com/sirupsen/logrus/hooks/test"
"github.com/stretchr/testify/assert"
"testing"
)
func TestSomething(t*testing.T){
logger, hook := test.NewNullLogger()
logger.Error("Helloerror")
assert.Equal(t, 1, len(hook.Entries))
assert.Equal(t, logrus.ErrorLevel, hook.LastEntry().Level)
assert.Equal(t, "Helloerror", hook.LastEntry().Message)
hook.Reset()
assert.Nil(t, hook.LastEntry())
}
```
#### Fatal handlers
Logrus can register one or more functions that will be called when any `fatal`
level message is logged. The registered handlers will be executed before
logrus performs a `os.Exit(1)`. This behavior may be helpful if callers need
to gracefully shutdown. Unlike a `panic("Something went wrong...")` call which can be intercepted with a deferred `recover` a call to `os.Exit(1)` can not be intercepted.
```
...
handler := func() {
// gracefully shutdown something...
}
logrus.RegisterExitHandler(handler)
...
```
#### Thread safety
By default, Logger is protected by a mutex for concurrent writes. The mutex is held when calling hooks and writing logs.
If you are sure such locking is not needed, you can call logger.SetNoLock() to disable the locking.
Situation when locking is not needed includes:
* You have no hooks registered, or hooks calling is already thread-safe.
* Writing to logger.Out is already thread-safe, for example:
1) logger.Out is protected by locks.
2) logger.Out is a os.File handler opened with `O_APPEND` flag, and every write is smaller than 4k. (This allow multi-thread/multi-process writing)
(Refer to http://www.notthewizard.com/2014/06/17/are-files-appends-really-atomic/)

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package logrus
// The following code was sourced and modified from the
// https://github.com/tebeka/atexit package governed by the following license:
//
// Copyright (c) 2012 Miki Tebeka <miki.tebeka@gmail.com>.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy of
// this software and associated documentation files (the "Software"), to deal in
// the Software without restriction, including without limitation the rights to
// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
// the Software, and to permit persons to whom the Software is furnished to do so,
// subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
import (
"fmt"
"os"
)
var handlers = []func(){}
func runHandler(handler func()) {
defer func() {
if err := recover(); err != nil {
fmt.Fprintln(os.Stderr, "Error: Logrus exit handler error:", err)
}
}()
handler()
}
func runHandlers() {
for _, handler := range handlers {
runHandler(handler)
}
}
// Exit runs all the Logrus atexit handlers and then terminates the program using os.Exit(code)
func Exit(code int) {
runHandlers()
os.Exit(code)
}
// RegisterExitHandler adds a Logrus Exit handler, call logrus.Exit to invoke
// all handlers. The handlers will also be invoked when any Fatal log entry is
// made.
//
// This method is useful when a caller wishes to use logrus to log a fatal
// message but also needs to gracefully shutdown. An example usecase could be
// closing database connections, or sending a alert that the application is
// closing.
func RegisterExitHandler(handler func()) {
handlers = append(handlers, handler)
}

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version: "{build}"
platform: x64
clone_folder: c:\gopath\src\github.com\sirupsen\logrus
environment:
GOPATH: c:\gopath
branches:
only:
- master
install:
- set PATH=%GOPATH%\bin;c:\go\bin;%PATH%
- go version
build_script:
- go get -t
- go test

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@ -0,0 +1,26 @@
/*
Package logrus is a structured logger for Go, completely API compatible with the standard library logger.
The simplest way to use Logrus is simply the package-level exported logger:
package main
import (
log "github.com/sirupsen/logrus"
)
func main() {
log.WithFields(log.Fields{
"animal": "walrus",
"number": 1,
"size": 10,
}).Info("A walrus appears")
}
Output:
time="2015-09-07T08:48:33Z" level=info msg="A walrus appears" animal=walrus number=1 size=10
For a full guide visit https://github.com/sirupsen/logrus
*/
package logrus

408
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@ -0,0 +1,408 @@
package logrus
import (
"bytes"
"fmt"
"os"
"reflect"
"runtime"
"strings"
"sync"
"time"
)
var (
bufferPool *sync.Pool
// qualified package name, cached at first use
logrusPackage string
// Positions in the call stack when tracing to report the calling method
minimumCallerDepth int
// Used for caller information initialisation
callerInitOnce sync.Once
)
const (
maximumCallerDepth int = 25
knownLogrusFrames int = 4
)
func init() {
bufferPool = &sync.Pool{
New: func() interface{} {
return new(bytes.Buffer)
},
}
// start at the bottom of the stack before the package-name cache is primed
minimumCallerDepth = 1
}
// Defines the key when adding errors using WithError.
var ErrorKey = "error"
// An entry is the final or intermediate Logrus logging entry. It contains all
// the fields passed with WithField{,s}. It's finally logged when Trace, Debug,
// Info, Warn, Error, Fatal or Panic is called on it. These objects can be
// reused and passed around as much as you wish to avoid field duplication.
type Entry struct {
Logger *Logger
// Contains all the fields set by the user.
Data Fields
// Time at which the log entry was created
Time time.Time
// Level the log entry was logged at: Trace, Debug, Info, Warn, Error, Fatal or Panic
// This field will be set on entry firing and the value will be equal to the one in Logger struct field.
Level Level
// Calling method, with package name
Caller *runtime.Frame
// Message passed to Trace, Debug, Info, Warn, Error, Fatal or Panic
Message string
// When formatter is called in entry.log(), a Buffer may be set to entry
Buffer *bytes.Buffer
// err may contain a field formatting error
err string
}
func NewEntry(logger *Logger) *Entry {
return &Entry{
Logger: logger,
// Default is three fields, plus one optional. Give a little extra room.
Data: make(Fields, 6),
}
}
// Returns the string representation from the reader and ultimately the
// formatter.
func (entry *Entry) String() (string, error) {
serialized, err := entry.Logger.Formatter.Format(entry)
if err != nil {
return "", err
}
str := string(serialized)
return str, nil
}
// Add an error as single field (using the key defined in ErrorKey) to the Entry.
func (entry *Entry) WithError(err error) *Entry {
return entry.WithField(ErrorKey, err)
}
// Add a single field to the Entry.
func (entry *Entry) WithField(key string, value interface{}) *Entry {
return entry.WithFields(Fields{key: value})
}
// Add a map of fields to the Entry.
func (entry *Entry) WithFields(fields Fields) *Entry {
data := make(Fields, len(entry.Data)+len(fields))
for k, v := range entry.Data {
data[k] = v
}
var field_err string
for k, v := range fields {
if t := reflect.TypeOf(v); t != nil && t.Kind() == reflect.Func {
field_err = fmt.Sprintf("can not add field %q", k)
if entry.err != "" {
field_err = entry.err + ", " + field_err
}
} else {
data[k] = v
}
}
return &Entry{Logger: entry.Logger, Data: data, Time: entry.Time, err: field_err}
}
// Overrides the time of the Entry.
func (entry *Entry) WithTime(t time.Time) *Entry {
return &Entry{Logger: entry.Logger, Data: entry.Data, Time: t}
}
// getPackageName reduces a fully qualified function name to the package name
// There really ought to be to be a better way...
func getPackageName(f string) string {
for {
lastPeriod := strings.LastIndex(f, ".")
lastSlash := strings.LastIndex(f, "/")
if lastPeriod > lastSlash {
f = f[:lastPeriod]
} else {
break
}
}
return f
}
// getCaller retrieves the name of the first non-logrus calling function
func getCaller() *runtime.Frame {
// Restrict the lookback frames to avoid runaway lookups
pcs := make([]uintptr, maximumCallerDepth)
depth := runtime.Callers(minimumCallerDepth, pcs)
frames := runtime.CallersFrames(pcs[:depth])
// cache this package's fully-qualified name
callerInitOnce.Do(func() {
logrusPackage = getPackageName(runtime.FuncForPC(pcs[0]).Name())
// now that we have the cache, we can skip a minimum count of known-logrus functions
// XXX this is dubious, the number of frames may vary store an entry in a logger interface
minimumCallerDepth = knownLogrusFrames
})
for f, again := frames.Next(); again; f, again = frames.Next() {
pkg := getPackageName(f.Function)
// If the caller isn't part of this package, we're done
if pkg != logrusPackage {
return &f
}
}
// if we got here, we failed to find the caller's context
return nil
}
func (entry Entry) HasCaller() (has bool) {
return entry.Logger != nil &&
entry.Logger.ReportCaller &&
entry.Caller != nil
}
// This function is not declared with a pointer value because otherwise
// race conditions will occur when using multiple goroutines
func (entry Entry) log(level Level, msg string) {
var buffer *bytes.Buffer
// Default to now, but allow users to override if they want.
//
// We don't have to worry about polluting future calls to Entry#log()
// with this assignment because this function is declared with a
// non-pointer receiver.
if entry.Time.IsZero() {
entry.Time = time.Now()
}
entry.Level = level
entry.Message = msg
if entry.Logger.ReportCaller {
entry.Caller = getCaller()
}
entry.fireHooks()
buffer = bufferPool.Get().(*bytes.Buffer)
buffer.Reset()
defer bufferPool.Put(buffer)
entry.Buffer = buffer
entry.write()
entry.Buffer = nil
// To avoid Entry#log() returning a value that only would make sense for
// panic() to use in Entry#Panic(), we avoid the allocation by checking
// directly here.
if level <= PanicLevel {
panic(&entry)
}
}
func (entry *Entry) fireHooks() {
entry.Logger.mu.Lock()
defer entry.Logger.mu.Unlock()
err := entry.Logger.Hooks.Fire(entry.Level, entry)
if err != nil {
fmt.Fprintf(os.Stderr, "Failed to fire hook: %v\n", err)
}
}
func (entry *Entry) write() {
entry.Logger.mu.Lock()
defer entry.Logger.mu.Unlock()
serialized, err := entry.Logger.Formatter.Format(entry)
if err != nil {
fmt.Fprintf(os.Stderr, "Failed to obtain reader, %v\n", err)
} else {
_, err = entry.Logger.Out.Write(serialized)
if err != nil {
fmt.Fprintf(os.Stderr, "Failed to write to log, %v\n", err)
}
}
}
func (entry *Entry) Trace(args ...interface{}) {
if entry.Logger.IsLevelEnabled(TraceLevel) {
entry.log(TraceLevel, fmt.Sprint(args...))
}
}
func (entry *Entry) Debug(args ...interface{}) {
if entry.Logger.IsLevelEnabled(DebugLevel) {
entry.log(DebugLevel, fmt.Sprint(args...))
}
}
func (entry *Entry) Print(args ...interface{}) {
entry.Info(args...)
}
func (entry *Entry) Info(args ...interface{}) {
if entry.Logger.IsLevelEnabled(InfoLevel) {
entry.log(InfoLevel, fmt.Sprint(args...))
}
}
func (entry *Entry) Warn(args ...interface{}) {
if entry.Logger.IsLevelEnabled(WarnLevel) {
entry.log(WarnLevel, fmt.Sprint(args...))
}
}
func (entry *Entry) Warning(args ...interface{}) {
entry.Warn(args...)
}
func (entry *Entry) Error(args ...interface{}) {
if entry.Logger.IsLevelEnabled(ErrorLevel) {
entry.log(ErrorLevel, fmt.Sprint(args...))
}
}
func (entry *Entry) Fatal(args ...interface{}) {
if entry.Logger.IsLevelEnabled(FatalLevel) {
entry.log(FatalLevel, fmt.Sprint(args...))
}
entry.Logger.Exit(1)
}
func (entry *Entry) Panic(args ...interface{}) {
if entry.Logger.IsLevelEnabled(PanicLevel) {
entry.log(PanicLevel, fmt.Sprint(args...))
}
panic(fmt.Sprint(args...))
}
// Entry Printf family functions
func (entry *Entry) Tracef(format string, args ...interface{}) {
if entry.Logger.IsLevelEnabled(TraceLevel) {
entry.Trace(fmt.Sprintf(format, args...))
}
}
func (entry *Entry) Debugf(format string, args ...interface{}) {
if entry.Logger.IsLevelEnabled(DebugLevel) {
entry.Debug(fmt.Sprintf(format, args...))
}
}
func (entry *Entry) Infof(format string, args ...interface{}) {
if entry.Logger.IsLevelEnabled(InfoLevel) {
entry.Info(fmt.Sprintf(format, args...))
}
}
func (entry *Entry) Printf(format string, args ...interface{}) {
entry.Infof(format, args...)
}
func (entry *Entry) Warnf(format string, args ...interface{}) {
if entry.Logger.IsLevelEnabled(WarnLevel) {
entry.Warn(fmt.Sprintf(format, args...))
}
}
func (entry *Entry) Warningf(format string, args ...interface{}) {
entry.Warnf(format, args...)
}
func (entry *Entry) Errorf(format string, args ...interface{}) {
if entry.Logger.IsLevelEnabled(ErrorLevel) {
entry.Error(fmt.Sprintf(format, args...))
}
}
func (entry *Entry) Fatalf(format string, args ...interface{}) {
if entry.Logger.IsLevelEnabled(FatalLevel) {
entry.Fatal(fmt.Sprintf(format, args...))
}
entry.Logger.Exit(1)
}
func (entry *Entry) Panicf(format string, args ...interface{}) {
if entry.Logger.IsLevelEnabled(PanicLevel) {
entry.Panic(fmt.Sprintf(format, args...))
}
}
// Entry Println family functions
func (entry *Entry) Traceln(args ...interface{}) {
if entry.Logger.IsLevelEnabled(TraceLevel) {
entry.Trace(entry.sprintlnn(args...))
}
}
func (entry *Entry) Debugln(args ...interface{}) {
if entry.Logger.IsLevelEnabled(DebugLevel) {
entry.Debug(entry.sprintlnn(args...))
}
}
func (entry *Entry) Infoln(args ...interface{}) {
if entry.Logger.IsLevelEnabled(InfoLevel) {
entry.Info(entry.sprintlnn(args...))
}
}
func (entry *Entry) Println(args ...interface{}) {
entry.Infoln(args...)
}
func (entry *Entry) Warnln(args ...interface{}) {
if entry.Logger.IsLevelEnabled(WarnLevel) {
entry.Warn(entry.sprintlnn(args...))
}
}
func (entry *Entry) Warningln(args ...interface{}) {
entry.Warnln(args...)
}
func (entry *Entry) Errorln(args ...interface{}) {
if entry.Logger.IsLevelEnabled(ErrorLevel) {
entry.Error(entry.sprintlnn(args...))
}
}
func (entry *Entry) Fatalln(args ...interface{}) {
if entry.Logger.IsLevelEnabled(FatalLevel) {
entry.Fatal(entry.sprintlnn(args...))
}
entry.Logger.Exit(1)
}
func (entry *Entry) Panicln(args ...interface{}) {
if entry.Logger.IsLevelEnabled(PanicLevel) {
entry.Panic(entry.sprintlnn(args...))
}
}
// Sprintlnn => Sprint no newline. This is to get the behavior of how
// fmt.Sprintln where spaces are always added between operands, regardless of
// their type. Instead of vendoring the Sprintln implementation to spare a
// string allocation, we do the simplest thing.
func (entry *Entry) sprintlnn(args ...interface{}) string {
msg := fmt.Sprintln(args...)
return msg[:len(msg)-1]
}

219
vendor/github.com/sirupsen/logrus/exported.go generated vendored Normal file
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package logrus
import (
"io"
"time"
)
var (
// std is the name of the standard logger in stdlib `log`
std = New()
)
func StandardLogger() *Logger {
return std
}
// SetOutput sets the standard logger output.
func SetOutput(out io.Writer) {
std.SetOutput(out)
}
// SetFormatter sets the standard logger formatter.
func SetFormatter(formatter Formatter) {
std.SetFormatter(formatter)
}
// SetReportCaller sets whether the standard logger will include the calling
// method as a field.
func SetReportCaller(include bool) {
std.SetReportCaller(include)
}
// SetLevel sets the standard logger level.
func SetLevel(level Level) {
std.SetLevel(level)
}
// GetLevel returns the standard logger level.
func GetLevel() Level {
return std.GetLevel()
}
// IsLevelEnabled checks if the log level of the standard logger is greater than the level param
func IsLevelEnabled(level Level) bool {
return std.IsLevelEnabled(level)
}
// AddHook adds a hook to the standard logger hooks.
func AddHook(hook Hook) {
std.AddHook(hook)
}
// WithError creates an entry from the standard logger and adds an error to it, using the value defined in ErrorKey as key.
func WithError(err error) *Entry {
return std.WithField(ErrorKey, err)
}
// WithField creates an entry from the standard logger and adds a field to
// it. If you want multiple fields, use `WithFields`.
//
// Note that it doesn't log until you call Debug, Print, Info, Warn, Fatal
// or Panic on the Entry it returns.
func WithField(key string, value interface{}) *Entry {
return std.WithField(key, value)
}
// WithFields creates an entry from the standard logger and adds multiple
// fields to it. This is simply a helper for `WithField`, invoking it
// once for each field.
//
// Note that it doesn't log until you call Debug, Print, Info, Warn, Fatal
// or Panic on the Entry it returns.
func WithFields(fields Fields) *Entry {
return std.WithFields(fields)
}
// WithTime creats an entry from the standard logger and overrides the time of
// logs generated with it.
//
// Note that it doesn't log until you call Debug, Print, Info, Warn, Fatal
// or Panic on the Entry it returns.
func WithTime(t time.Time) *Entry {
return std.WithTime(t)
}
// Trace logs a message at level Trace on the standard logger.
func Trace(args ...interface{}) {
std.Trace(args...)
}
// Debug logs a message at level Debug on the standard logger.
func Debug(args ...interface{}) {
std.Debug(args...)
}
// Print logs a message at level Info on the standard logger.
func Print(args ...interface{}) {
std.Print(args...)
}
// Info logs a message at level Info on the standard logger.
func Info(args ...interface{}) {
std.Info(args...)
}
// Warn logs a message at level Warn on the standard logger.
func Warn(args ...interface{}) {
std.Warn(args...)
}
// Warning logs a message at level Warn on the standard logger.
func Warning(args ...interface{}) {
std.Warning(args...)
}
// Error logs a message at level Error on the standard logger.
func Error(args ...interface{}) {
std.Error(args...)
}
// Panic logs a message at level Panic on the standard logger.
func Panic(args ...interface{}) {
std.Panic(args...)
}
// Fatal logs a message at level Fatal on the standard logger then the process will exit with status set to 1.
func Fatal(args ...interface{}) {
std.Fatal(args...)
}
// Tracef logs a message at level Trace on the standard logger.
func Tracef(format string, args ...interface{}) {
std.Tracef(format, args...)
}
// Debugf logs a message at level Debug on the standard logger.
func Debugf(format string, args ...interface{}) {
std.Debugf(format, args...)
}
// Printf logs a message at level Info on the standard logger.
func Printf(format string, args ...interface{}) {
std.Printf(format, args...)
}
// Infof logs a message at level Info on the standard logger.
func Infof(format string, args ...interface{}) {
std.Infof(format, args...)
}
// Warnf logs a message at level Warn on the standard logger.
func Warnf(format string, args ...interface{}) {
std.Warnf(format, args...)
}
// Warningf logs a message at level Warn on the standard logger.
func Warningf(format string, args ...interface{}) {
std.Warningf(format, args...)
}
// Errorf logs a message at level Error on the standard logger.
func Errorf(format string, args ...interface{}) {
std.Errorf(format, args...)
}
// Panicf logs a message at level Panic on the standard logger.
func Panicf(format string, args ...interface{}) {
std.Panicf(format, args...)
}
// Fatalf logs a message at level Fatal on the standard logger then the process will exit with status set to 1.
func Fatalf(format string, args ...interface{}) {
std.Fatalf(format, args...)
}
// Traceln logs a message at level Trace on the standard logger.
func Traceln(args ...interface{}) {
std.Traceln(args...)
}
// Debugln logs a message at level Debug on the standard logger.
func Debugln(args ...interface{}) {
std.Debugln(args...)
}
// Println logs a message at level Info on the standard logger.
func Println(args ...interface{}) {
std.Println(args...)
}
// Infoln logs a message at level Info on the standard logger.
func Infoln(args ...interface{}) {
std.Infoln(args...)
}
// Warnln logs a message at level Warn on the standard logger.
func Warnln(args ...interface{}) {
std.Warnln(args...)
}
// Warningln logs a message at level Warn on the standard logger.
func Warningln(args ...interface{}) {
std.Warningln(args...)
}
// Errorln logs a message at level Error on the standard logger.
func Errorln(args ...interface{}) {
std.Errorln(args...)
}
// Panicln logs a message at level Panic on the standard logger.
func Panicln(args ...interface{}) {
std.Panicln(args...)
}
// Fatalln logs a message at level Fatal on the standard logger then the process will exit with status set to 1.
func Fatalln(args ...interface{}) {
std.Fatalln(args...)
}

78
vendor/github.com/sirupsen/logrus/formatter.go generated vendored Normal file
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package logrus
import "time"
// Default key names for the default fields
const (
defaultTimestampFormat = time.RFC3339
FieldKeyMsg = "msg"
FieldKeyLevel = "level"
FieldKeyTime = "time"
FieldKeyLogrusError = "logrus_error"
FieldKeyFunc = "func"
FieldKeyFile = "file"
)
// The Formatter interface is used to implement a custom Formatter. It takes an
// `Entry`. It exposes all the fields, including the default ones:
//
// * `entry.Data["msg"]`. The message passed from Info, Warn, Error ..
// * `entry.Data["time"]`. The timestamp.
// * `entry.Data["level"]. The level the entry was logged at.
//
// Any additional fields added with `WithField` or `WithFields` are also in
// `entry.Data`. Format is expected to return an array of bytes which are then
// logged to `logger.Out`.
type Formatter interface {
Format(*Entry) ([]byte, error)
}
// This is to not silently overwrite `time`, `msg`, `func` and `level` fields when
// dumping it. If this code wasn't there doing:
//
// logrus.WithField("level", 1).Info("hello")
//
// Would just silently drop the user provided level. Instead with this code
// it'll logged as:
//
// {"level": "info", "fields.level": 1, "msg": "hello", "time": "..."}
//
// It's not exported because it's still using Data in an opinionated way. It's to
// avoid code duplication between the two default formatters.
func prefixFieldClashes(data Fields, fieldMap FieldMap, reportCaller bool) {
timeKey := fieldMap.resolve(FieldKeyTime)
if t, ok := data[timeKey]; ok {
data["fields."+timeKey] = t
delete(data, timeKey)
}
msgKey := fieldMap.resolve(FieldKeyMsg)
if m, ok := data[msgKey]; ok {
data["fields."+msgKey] = m
delete(data, msgKey)
}
levelKey := fieldMap.resolve(FieldKeyLevel)
if l, ok := data[levelKey]; ok {
data["fields."+levelKey] = l
delete(data, levelKey)
}
logrusErrKey := fieldMap.resolve(FieldKeyLogrusError)
if l, ok := data[logrusErrKey]; ok {
data["fields."+logrusErrKey] = l
delete(data, logrusErrKey)
}
// If reportCaller is not set, 'func' will not conflict.
if reportCaller {
funcKey := fieldMap.resolve(FieldKeyFunc)
if l, ok := data[funcKey]; ok {
data["fields."+funcKey] = l
}
fileKey := fieldMap.resolve(FieldKeyFile)
if l, ok := data[fileKey]; ok {
data["fields."+fileKey] = l
}
}
}

11
vendor/github.com/sirupsen/logrus/go.mod generated vendored Normal file
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module github.com/sirupsen/logrus
require (
github.com/davecgh/go-spew v1.1.1 // indirect
github.com/konsorten/go-windows-terminal-sequences v1.0.1
github.com/pmezard/go-difflib v1.0.0 // indirect
github.com/stretchr/objx v0.1.1 // indirect
github.com/stretchr/testify v1.2.2
golang.org/x/crypto v0.0.0-20180904163835-0709b304e793
golang.org/x/sys v0.0.0-20180905080454-ebe1bf3edb33
)

15
vendor/github.com/sirupsen/logrus/go.sum generated vendored Normal file
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@ -0,0 +1,15 @@
github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/konsorten/go-windows-terminal-sequences v0.0.0-20180402223658-b729f2633dfe h1:CHRGQ8V7OlCYtwaKPJi3iA7J+YdNKdo8j7nG5IgDhjs=
github.com/konsorten/go-windows-terminal-sequences v0.0.0-20180402223658-b729f2633dfe/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
github.com/konsorten/go-windows-terminal-sequences v1.0.1/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
github.com/stretchr/objx v0.1.1 h1:2vfRuCMp5sSVIDSqO8oNnWJq7mPa6KVP3iPIwFBuy8A=
github.com/stretchr/objx v0.1.1/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
github.com/stretchr/testify v1.2.2 h1:bSDNvY7ZPG5RlJ8otE/7V6gMiyenm9RtJ7IUVIAoJ1w=
github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
golang.org/x/crypto v0.0.0-20180904163835-0709b304e793 h1:u+LnwYTOOW7Ukr/fppxEb1Nwz0AtPflrblfvUudpo+I=
golang.org/x/crypto v0.0.0-20180904163835-0709b304e793/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
golang.org/x/sys v0.0.0-20180905080454-ebe1bf3edb33 h1:I6FyU15t786LL7oL/hn43zqTuEGr4PN7F4XJ1p4E3Y8=
golang.org/x/sys v0.0.0-20180905080454-ebe1bf3edb33/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=

34
vendor/github.com/sirupsen/logrus/hooks.go generated vendored Normal file
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package logrus
// A hook to be fired when logging on the logging levels returned from
// `Levels()` on your implementation of the interface. Note that this is not
// fired in a goroutine or a channel with workers, you should handle such
// functionality yourself if your call is non-blocking and you don't wish for
// the logging calls for levels returned from `Levels()` to block.
type Hook interface {
Levels() []Level
Fire(*Entry) error
}
// Internal type for storing the hooks on a logger instance.
type LevelHooks map[Level][]Hook
// Add a hook to an instance of logger. This is called with
// `log.Hooks.Add(new(MyHook))` where `MyHook` implements the `Hook` interface.
func (hooks LevelHooks) Add(hook Hook) {
for _, level := range hook.Levels() {
hooks[level] = append(hooks[level], hook)
}
}
// Fire all the hooks for the passed level. Used by `entry.log` to fire
// appropriate hooks for a log entry.
func (hooks LevelHooks) Fire(level Level, entry *Entry) error {
for _, hook := range hooks[level] {
if err := hook.Fire(entry); err != nil {
return err
}
}
return nil
}

105
vendor/github.com/sirupsen/logrus/json_formatter.go generated vendored Normal file
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package logrus
import (
"bytes"
"encoding/json"
"fmt"
)
type fieldKey string
// FieldMap allows customization of the key names for default fields.
type FieldMap map[fieldKey]string
func (f FieldMap) resolve(key fieldKey) string {
if k, ok := f[key]; ok {
return k
}
return string(key)
}
// JSONFormatter formats logs into parsable json
type JSONFormatter struct {
// TimestampFormat sets the format used for marshaling timestamps.
TimestampFormat string
// DisableTimestamp allows disabling automatic timestamps in output
DisableTimestamp bool
// DataKey allows users to put all the log entry parameters into a nested dictionary at a given key.
DataKey string
// FieldMap allows users to customize the names of keys for default fields.
// As an example:
// formatter := &JSONFormatter{
// FieldMap: FieldMap{
// FieldKeyTime: "@timestamp",
// FieldKeyLevel: "@level",
// FieldKeyMsg: "@message",
// FieldKeyFunc: "@caller",
// },
// }
FieldMap FieldMap
// PrettyPrint will indent all json logs
PrettyPrint bool
}
// Format renders a single log entry
func (f *JSONFormatter) Format(entry *Entry) ([]byte, error) {
data := make(Fields, len(entry.Data)+4)
for k, v := range entry.Data {
switch v := v.(type) {
case error:
// Otherwise errors are ignored by `encoding/json`
// https://github.com/sirupsen/logrus/issues/137
data[k] = v.Error()
default:
data[k] = v
}
}
if f.DataKey != "" {
newData := make(Fields, 4)
newData[f.DataKey] = data
data = newData
}
prefixFieldClashes(data, f.FieldMap, entry.HasCaller())
timestampFormat := f.TimestampFormat
if timestampFormat == "" {
timestampFormat = defaultTimestampFormat
}
if entry.err != "" {
data[f.FieldMap.resolve(FieldKeyLogrusError)] = entry.err
}
if !f.DisableTimestamp {
data[f.FieldMap.resolve(FieldKeyTime)] = entry.Time.Format(timestampFormat)
}
data[f.FieldMap.resolve(FieldKeyMsg)] = entry.Message
data[f.FieldMap.resolve(FieldKeyLevel)] = entry.Level.String()
if entry.HasCaller() {
data[f.FieldMap.resolve(FieldKeyFunc)] = entry.Caller.Function
data[f.FieldMap.resolve(FieldKeyFile)] = fmt.Sprintf("%s:%d", entry.Caller.File, entry.Caller.Line)
}
var b *bytes.Buffer
if entry.Buffer != nil {
b = entry.Buffer
} else {
b = &bytes.Buffer{}
}
encoder := json.NewEncoder(b)
if f.PrettyPrint {
encoder.SetIndent("", " ")
}
if err := encoder.Encode(data); err != nil {
return nil, fmt.Errorf("Failed to marshal fields to JSON, %v", err)
}
return b.Bytes(), nil
}

415
vendor/github.com/sirupsen/logrus/logger.go generated vendored Normal file
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package logrus
import (
"io"
"os"
"sync"
"sync/atomic"
"time"
)
type Logger struct {
// The logs are `io.Copy`'d to this in a mutex. It's common to set this to a
// file, or leave it default which is `os.Stderr`. You can also set this to
// something more adventurous, such as logging to Kafka.
Out io.Writer
// Hooks for the logger instance. These allow firing events based on logging
// levels and log entries. For example, to send errors to an error tracking
// service, log to StatsD or dump the core on fatal errors.
Hooks LevelHooks
// All log entries pass through the formatter before logged to Out. The
// included formatters are `TextFormatter` and `JSONFormatter` for which
// TextFormatter is the default. In development (when a TTY is attached) it
// logs with colors, but to a file it wouldn't. You can easily implement your
// own that implements the `Formatter` interface, see the `README` or included
// formatters for examples.
Formatter Formatter
// Flag for whether to log caller info (off by default)
ReportCaller bool
// The logging level the logger should log at. This is typically (and defaults
// to) `logrus.Info`, which allows Info(), Warn(), Error() and Fatal() to be
// logged.
Level Level
// Used to sync writing to the log. Locking is enabled by Default
mu MutexWrap
// Reusable empty entry
entryPool sync.Pool
// Function to exit the application, defaults to `os.Exit()`
ExitFunc exitFunc
}
type exitFunc func(int)
type MutexWrap struct {
lock sync.Mutex
disabled bool
}
func (mw *MutexWrap) Lock() {
if !mw.disabled {
mw.lock.Lock()
}
}
func (mw *MutexWrap) Unlock() {
if !mw.disabled {
mw.lock.Unlock()
}
}
func (mw *MutexWrap) Disable() {
mw.disabled = true
}
// Creates a new logger. Configuration should be set by changing `Formatter`,
// `Out` and `Hooks` directly on the default logger instance. You can also just
// instantiate your own:
//
// var log = &Logger{
// Out: os.Stderr,
// Formatter: new(JSONFormatter),
// Hooks: make(LevelHooks),
// Level: logrus.DebugLevel,
// }
//
// It's recommended to make this a global instance called `log`.
func New() *Logger {
return &Logger{
Out: os.Stderr,
Formatter: new(TextFormatter),
Hooks: make(LevelHooks),
Level: InfoLevel,
ExitFunc: os.Exit,
ReportCaller: false,
}
}
func (logger *Logger) newEntry() *Entry {
entry, ok := logger.entryPool.Get().(*Entry)
if ok {
return entry
}
return NewEntry(logger)
}
func (logger *Logger) releaseEntry(entry *Entry) {
entry.Data = map[string]interface{}{}
logger.entryPool.Put(entry)
}
// Adds a field to the log entry, note that it doesn't log until you call
// Debug, Print, Info, Warn, Error, Fatal or Panic. It only creates a log entry.
// If you want multiple fields, use `WithFields`.
func (logger *Logger) WithField(key string, value interface{}) *Entry {
entry := logger.newEntry()
defer logger.releaseEntry(entry)
return entry.WithField(key, value)
}
// Adds a struct of fields to the log entry. All it does is call `WithField` for
// each `Field`.
func (logger *Logger) WithFields(fields Fields) *Entry {
entry := logger.newEntry()
defer logger.releaseEntry(entry)
return entry.WithFields(fields)
}
// Add an error as single field to the log entry. All it does is call
// `WithError` for the given `error`.
func (logger *Logger) WithError(err error) *Entry {
entry := logger.newEntry()
defer logger.releaseEntry(entry)
return entry.WithError(err)
}
// Overrides the time of the log entry.
func (logger *Logger) WithTime(t time.Time) *Entry {
entry := logger.newEntry()
defer logger.releaseEntry(entry)
return entry.WithTime(t)
}
func (logger *Logger) Tracef(format string, args ...interface{}) {
if logger.IsLevelEnabled(TraceLevel) {
entry := logger.newEntry()
entry.Tracef(format, args...)
logger.releaseEntry(entry)
}
}
func (logger *Logger) Debugf(format string, args ...interface{}) {
if logger.IsLevelEnabled(DebugLevel) {
entry := logger.newEntry()
entry.Debugf(format, args...)
logger.releaseEntry(entry)
}
}
func (logger *Logger) Infof(format string, args ...interface{}) {
if logger.IsLevelEnabled(InfoLevel) {
entry := logger.newEntry()
entry.Infof(format, args...)
logger.releaseEntry(entry)
}
}
func (logger *Logger) Printf(format string, args ...interface{}) {
entry := logger.newEntry()
entry.Printf(format, args...)
logger.releaseEntry(entry)
}
func (logger *Logger) Warnf(format string, args ...interface{}) {
if logger.IsLevelEnabled(WarnLevel) {
entry := logger.newEntry()
entry.Warnf(format, args...)
logger.releaseEntry(entry)
}
}
func (logger *Logger) Warningf(format string, args ...interface{}) {
if logger.IsLevelEnabled(WarnLevel) {
entry := logger.newEntry()
entry.Warnf(format, args...)
logger.releaseEntry(entry)
}
}
func (logger *Logger) Errorf(format string, args ...interface{}) {
if logger.IsLevelEnabled(ErrorLevel) {
entry := logger.newEntry()
entry.Errorf(format, args...)
logger.releaseEntry(entry)
}
}
func (logger *Logger) Fatalf(format string, args ...interface{}) {
if logger.IsLevelEnabled(FatalLevel) {
entry := logger.newEntry()
entry.Fatalf(format, args...)
logger.releaseEntry(entry)
}
logger.Exit(1)
}
func (logger *Logger) Panicf(format string, args ...interface{}) {
if logger.IsLevelEnabled(PanicLevel) {
entry := logger.newEntry()
entry.Panicf(format, args...)
logger.releaseEntry(entry)
}
}
func (logger *Logger) Trace(args ...interface{}) {
if logger.IsLevelEnabled(TraceLevel) {
entry := logger.newEntry()
entry.Trace(args...)
logger.releaseEntry(entry)
}
}
func (logger *Logger) Debug(args ...interface{}) {
if logger.IsLevelEnabled(DebugLevel) {
entry := logger.newEntry()
entry.Debug(args...)
logger.releaseEntry(entry)
}
}
func (logger *Logger) Info(args ...interface{}) {
if logger.IsLevelEnabled(InfoLevel) {
entry := logger.newEntry()
entry.Info(args...)
logger.releaseEntry(entry)
}
}
func (logger *Logger) Print(args ...interface{}) {
entry := logger.newEntry()
entry.Info(args...)
logger.releaseEntry(entry)
}
func (logger *Logger) Warn(args ...interface{}) {
if logger.IsLevelEnabled(WarnLevel) {
entry := logger.newEntry()
entry.Warn(args...)
logger.releaseEntry(entry)
}
}
func (logger *Logger) Warning(args ...interface{}) {
if logger.IsLevelEnabled(WarnLevel) {
entry := logger.newEntry()
entry.Warn(args...)
logger.releaseEntry(entry)
}
}
func (logger *Logger) Error(args ...interface{}) {
if logger.IsLevelEnabled(ErrorLevel) {
entry := logger.newEntry()
entry.Error(args...)
logger.releaseEntry(entry)
}
}
func (logger *Logger) Fatal(args ...interface{}) {
if logger.IsLevelEnabled(FatalLevel) {
entry := logger.newEntry()
entry.Fatal(args...)
logger.releaseEntry(entry)
}
logger.Exit(1)
}
func (logger *Logger) Panic(args ...interface{}) {
if logger.IsLevelEnabled(PanicLevel) {
entry := logger.newEntry()
entry.Panic(args...)
logger.releaseEntry(entry)
}
}
func (logger *Logger) Traceln(args ...interface{}) {
if logger.IsLevelEnabled(TraceLevel) {
entry := logger.newEntry()
entry.Traceln(args...)
logger.releaseEntry(entry)
}
}
func (logger *Logger) Debugln(args ...interface{}) {
if logger.IsLevelEnabled(DebugLevel) {
entry := logger.newEntry()
entry.Debugln(args...)
logger.releaseEntry(entry)
}
}
func (logger *Logger) Infoln(args ...interface{}) {
if logger.IsLevelEnabled(InfoLevel) {
entry := logger.newEntry()
entry.Infoln(args...)
logger.releaseEntry(entry)
}
}
func (logger *Logger) Println(args ...interface{}) {
entry := logger.newEntry()
entry.Println(args...)
logger.releaseEntry(entry)
}
func (logger *Logger) Warnln(args ...interface{}) {
if logger.IsLevelEnabled(WarnLevel) {
entry := logger.newEntry()
entry.Warnln(args...)
logger.releaseEntry(entry)
}
}
func (logger *Logger) Warningln(args ...interface{}) {
if logger.IsLevelEnabled(WarnLevel) {
entry := logger.newEntry()
entry.Warnln(args...)
logger.releaseEntry(entry)
}
}
func (logger *Logger) Errorln(args ...interface{}) {
if logger.IsLevelEnabled(ErrorLevel) {
entry := logger.newEntry()
entry.Errorln(args...)
logger.releaseEntry(entry)
}
}
func (logger *Logger) Fatalln(args ...interface{}) {
if logger.IsLevelEnabled(FatalLevel) {
entry := logger.newEntry()
entry.Fatalln(args...)
logger.releaseEntry(entry)
}
logger.Exit(1)
}
func (logger *Logger) Panicln(args ...interface{}) {
if logger.IsLevelEnabled(PanicLevel) {
entry := logger.newEntry()
entry.Panicln(args...)
logger.releaseEntry(entry)
}
}
func (logger *Logger) Exit(code int) {
runHandlers()
if logger.ExitFunc == nil {
logger.ExitFunc = os.Exit
}
logger.ExitFunc(code)
}
//When file is opened with appending mode, it's safe to
//write concurrently to a file (within 4k message on Linux).
//In these cases user can choose to disable the lock.
func (logger *Logger) SetNoLock() {
logger.mu.Disable()
}
func (logger *Logger) level() Level {
return Level(atomic.LoadUint32((*uint32)(&logger.Level)))
}
// SetLevel sets the logger level.
func (logger *Logger) SetLevel(level Level) {
atomic.StoreUint32((*uint32)(&logger.Level), uint32(level))
}
// GetLevel returns the logger level.
func (logger *Logger) GetLevel() Level {
return logger.level()
}
// AddHook adds a hook to the logger hooks.
func (logger *Logger) AddHook(hook Hook) {
logger.mu.Lock()
defer logger.mu.Unlock()
logger.Hooks.Add(hook)
}
// IsLevelEnabled checks if the log level of the logger is greater than the level param
func (logger *Logger) IsLevelEnabled(level Level) bool {
return logger.level() >= level
}
// SetFormatter sets the logger formatter.
func (logger *Logger) SetFormatter(formatter Formatter) {
logger.mu.Lock()
defer logger.mu.Unlock()
logger.Formatter = formatter
}
// SetOutput sets the logger output.
func (logger *Logger) SetOutput(output io.Writer) {
logger.mu.Lock()
defer logger.mu.Unlock()
logger.Out = output
}
func (logger *Logger) SetReportCaller(reportCaller bool) {
logger.mu.Lock()
defer logger.mu.Unlock()
logger.ReportCaller = reportCaller
}
// ReplaceHooks replaces the logger hooks and returns the old ones
func (logger *Logger) ReplaceHooks(hooks LevelHooks) LevelHooks {
logger.mu.Lock()
oldHooks := logger.Hooks
logger.Hooks = hooks
logger.mu.Unlock()
return oldHooks
}

178
vendor/github.com/sirupsen/logrus/logrus.go generated vendored Normal file
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@ -0,0 +1,178 @@
package logrus
import (
"fmt"
"log"
"strings"
)
// Fields type, used to pass to `WithFields`.
type Fields map[string]interface{}
// Level type
type Level uint32
// Convert the Level to a string. E.g. PanicLevel becomes "panic".
func (level Level) String() string {
switch level {
case TraceLevel:
return "trace"
case DebugLevel:
return "debug"
case InfoLevel:
return "info"
case WarnLevel:
return "warning"
case ErrorLevel:
return "error"
case FatalLevel:
return "fatal"
case PanicLevel:
return "panic"
}
return "unknown"
}
// ParseLevel takes a string level and returns the Logrus log level constant.
func ParseLevel(lvl string) (Level, error) {
switch strings.ToLower(lvl) {
case "panic":
return PanicLevel, nil
case "fatal":
return FatalLevel, nil
case "error":
return ErrorLevel, nil
case "warn", "warning":
return WarnLevel, nil
case "info":
return InfoLevel, nil
case "debug":
return DebugLevel, nil
case "trace":
return TraceLevel, nil
}
var l Level
return l, fmt.Errorf("not a valid logrus Level: %q", lvl)
}
// UnmarshalText implements encoding.TextUnmarshaler.
func (level *Level) UnmarshalText(text []byte) error {
l, err := ParseLevel(string(text))
if err != nil {
return err
}
*level = Level(l)
return nil
}
// A constant exposing all logging levels
var AllLevels = []Level{
PanicLevel,
FatalLevel,
ErrorLevel,
WarnLevel,
InfoLevel,
DebugLevel,
TraceLevel,
}
// These are the different logging levels. You can set the logging level to log
// on your instance of logger, obtained with `logrus.New()`.
const (
// PanicLevel level, highest level of severity. Logs and then calls panic with the
// message passed to Debug, Info, ...
PanicLevel Level = iota
// FatalLevel level. Logs and then calls `logger.Exit(1)`. It will exit even if the
// logging level is set to Panic.
FatalLevel
// ErrorLevel level. Logs. Used for errors that should definitely be noted.
// Commonly used for hooks to send errors to an error tracking service.
ErrorLevel
// WarnLevel level. Non-critical entries that deserve eyes.
WarnLevel
// InfoLevel level. General operational entries about what's going on inside the
// application.
InfoLevel
// DebugLevel level. Usually only enabled when debugging. Very verbose logging.
DebugLevel
// TraceLevel level. Designates finer-grained informational events than the Debug.
TraceLevel
)
// Won't compile if StdLogger can't be realized by a log.Logger
var (
_ StdLogger = &log.Logger{}
_ StdLogger = &Entry{}
_ StdLogger = &Logger{}
)
// StdLogger is what your logrus-enabled library should take, that way
// it'll accept a stdlib logger and a logrus logger. There's no standard
// interface, this is the closest we get, unfortunately.
type StdLogger interface {
Print(...interface{})
Printf(string, ...interface{})
Println(...interface{})
Fatal(...interface{})
Fatalf(string, ...interface{})
Fatalln(...interface{})
Panic(...interface{})
Panicf(string, ...interface{})
Panicln(...interface{})
}
// The FieldLogger interface generalizes the Entry and Logger types
type FieldLogger interface {
WithField(key string, value interface{}) *Entry
WithFields(fields Fields) *Entry
WithError(err error) *Entry
Debugf(format string, args ...interface{})
Infof(format string, args ...interface{})
Printf(format string, args ...interface{})
Warnf(format string, args ...interface{})
Warningf(format string, args ...interface{})
Errorf(format string, args ...interface{})
Fatalf(format string, args ...interface{})
Panicf(format string, args ...interface{})
Debug(args ...interface{})
Info(args ...interface{})
Print(args ...interface{})
Warn(args ...interface{})
Warning(args ...interface{})
Error(args ...interface{})
Fatal(args ...interface{})
Panic(args ...interface{})
Debugln(args ...interface{})
Infoln(args ...interface{})
Println(args ...interface{})
Warnln(args ...interface{})
Warningln(args ...interface{})
Errorln(args ...interface{})
Fatalln(args ...interface{})
Panicln(args ...interface{})
// IsDebugEnabled() bool
// IsInfoEnabled() bool
// IsWarnEnabled() bool
// IsErrorEnabled() bool
// IsFatalEnabled() bool
// IsPanicEnabled() bool
}
// Ext1FieldLogger (the first extension to FieldLogger) is superfluous, it is
// here for consistancy. Do not use. Use Logger or Entry instead.
type Ext1FieldLogger interface {
FieldLogger
Tracef(format string, args ...interface{})
Trace(args ...interface{})
Traceln(args ...interface{})
}

11
vendor/github.com/sirupsen/logrus/terminal_check_appengine.go generated vendored Normal file
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@ -0,0 +1,11 @@
// +build appengine
package logrus
import (
"io"
)
func checkIfTerminal(w io.Writer) bool {
return true
}

11
vendor/github.com/sirupsen/logrus/terminal_check_js.go generated vendored Normal file
View File

@ -0,0 +1,11 @@
// +build js
package logrus
import (
"io"
)
func checkIfTerminal(w io.Writer) bool {
return false
}

19
vendor/github.com/sirupsen/logrus/terminal_check_notappengine.go generated vendored Normal file
View File

@ -0,0 +1,19 @@
// +build !appengine,!js,!windows
package logrus
import (
"io"
"os"
"golang.org/x/crypto/ssh/terminal"
)
func checkIfTerminal(w io.Writer) bool {
switch v := w.(type) {
case *os.File:
return terminal.IsTerminal(int(v.Fd()))
default:
return false
}
}

20
vendor/github.com/sirupsen/logrus/terminal_check_windows.go generated vendored Normal file
View File

@ -0,0 +1,20 @@
// +build !appengine,!js,windows
package logrus
import (
"io"
"os"
"syscall"
)
func checkIfTerminal(w io.Writer) bool {
switch v := w.(type) {
case *os.File:
var mode uint32
err := syscall.GetConsoleMode(syscall.Handle(v.Fd()), &mode)
return err == nil
default:
return false
}
}

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