64 lines
1.8 KiB
Go
64 lines
1.8 KiB
Go
package main
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import (
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"flag"
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"github.com/cyrilix/robocar-base/cli"
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"github.com/cyrilix/robocar-base/mqttdevice"
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"github.com/cyrilix/robocar-throttle/part"
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"log"
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"os"
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)
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const (
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DefaultClientId = "robocar-throttle"
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DefaultThrottleMin = 0.3
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)
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func main() {
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var mqttBroker, username, password, clientId string
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var throttleTopic string
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var minThrottle, maxThrottle float64
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err := cli.SetFloat64DefaultValueFromEnv(&minThrottle, "THROTTLE_MIN", DefaultThrottleMin)
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if err != nil {
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log.Printf("unable to parse min throttle value arg: %v", err)
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}
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err = cli.SetFloat64DefaultValueFromEnv(&maxThrottle, "THROTTLE_MAX", minThrottle)
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if err != nil {
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log.Printf("unable to parse max throttle value arg: %v", err)
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}
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mqttQos := cli.InitIntFlag("MQTT_QOS", 0)
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_, mqttRetain := os.LookupEnv("MQTT_RETAIN")
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cli.InitMqttFlags(DefaultClientId, &mqttBroker, &username, &password, &clientId, &mqttQos, &mqttRetain)
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flag.StringVar(&throttleTopic, "mqtt-topic-throttle", os.Getenv("MQTT_TOPIC_THROTTLE"), "Mqtt topic to publish throttle result, use MQTT_TOPIC_THROTTLE if args not set")
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flag.Float64Var(&minThrottle, "throttle-min", minThrottle, "Minimum throttle value, use THROTTLE_MIN if args not set")
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flag.Float64Var(&maxThrottle, "throttle-max", maxThrottle, "Minimum throttle value, use THROTTLE_MAX if args not set")
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flag.Parse()
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if len(os.Args) <= 1 {
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flag.PrintDefaults()
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os.Exit(1)
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}
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client, err := cli.Connect(mqttBroker, username, password, clientId)
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if err != nil {
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log.Fatalf("unable to connect to mqtt bus: %v", err)
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}
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defer client.Disconnect(50)
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pub := mqttdevice.NewPahoMqttPubSub(mqttBroker, username, password,clientId,mqttQos, mqttRetain)
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p := part.NewPart(pub, throttleTopic, minThrottle, maxThrottle)
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defer p.Stop()
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cli.HandleExit(p)
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err = p.Start()
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if err != nil {
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log.Fatalf("unable to start service: %v", err)
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}
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}
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