127 lines
3.8 KiB
Go
127 lines
3.8 KiB
Go
// Copyright The OpenTelemetry Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package basic // import "go.opentelemetry.io/otel/sdk/metric/controller/basic"
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import (
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"time"
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"go.opentelemetry.io/otel"
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export "go.opentelemetry.io/otel/sdk/export/metric"
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"go.opentelemetry.io/otel/sdk/resource"
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)
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// config contains configuration for a basic Controller.
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type config struct {
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// Resource is the OpenTelemetry resource associated with all Meters
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// created by the Controller.
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Resource *resource.Resource
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// CollectPeriod is the interval between calls to Collect a
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// checkpoint.
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//
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// When pulling metrics and not exporting, this is the minimum
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// time between calls to Collect. In a pull-only
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// configuration, collection is performed on demand; set
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// CollectPeriod to 0 always recompute the export record set.
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//
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// When exporting metrics, this must be > 0.
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//
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// Default value is 10s.
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CollectPeriod time.Duration
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// CollectTimeout is the timeout of the Context passed to
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// Collect() and subsequently to Observer instrument callbacks.
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//
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// Default value is 10s. If zero, no Collect timeout is applied.
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CollectTimeout time.Duration
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// Exporter is used for exporting metric data.
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//
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// Note: Exporters such as Prometheus that pull data do not implement
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// export.Exporter. These will directly call Collect() and ForEach().
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Exporter export.Exporter
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// PushTimeout is the timeout of the Context when a exporter is configured.
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//
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// Default value is 10s. If zero, no Export timeout is applied.
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PushTimeout time.Duration
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}
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// Option is the interface that applies the value to a configuration option.
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type Option interface {
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// apply sets the Option value of a Config.
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apply(*config)
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}
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// WithResource sets the Resource configuration option of a Config by merging it
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// with the Resource configuration in the environment.
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func WithResource(r *resource.Resource) Option {
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return resourceOption{r}
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}
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type resourceOption struct{ *resource.Resource }
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func (o resourceOption) apply(cfg *config) {
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res, err := resource.Merge(cfg.Resource, o.Resource)
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if err != nil {
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otel.Handle(err)
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}
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cfg.Resource = res
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}
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// WithCollectPeriod sets the CollectPeriod configuration option of a Config.
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func WithCollectPeriod(period time.Duration) Option {
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return collectPeriodOption(period)
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}
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type collectPeriodOption time.Duration
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func (o collectPeriodOption) apply(cfg *config) {
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cfg.CollectPeriod = time.Duration(o)
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}
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// WithCollectTimeout sets the CollectTimeout configuration option of a Config.
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func WithCollectTimeout(timeout time.Duration) Option {
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return collectTimeoutOption(timeout)
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}
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type collectTimeoutOption time.Duration
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func (o collectTimeoutOption) apply(cfg *config) {
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cfg.CollectTimeout = time.Duration(o)
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}
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// WithExporter sets the exporter configuration option of a Config.
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func WithExporter(exporter export.Exporter) Option {
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return exporterOption{exporter}
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}
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type exporterOption struct{ exporter export.Exporter }
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func (o exporterOption) apply(cfg *config) {
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cfg.Exporter = o.exporter
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}
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// WithPushTimeout sets the PushTimeout configuration option of a Config.
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func WithPushTimeout(timeout time.Duration) Option {
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return pushTimeoutOption(timeout)
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}
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type pushTimeoutOption time.Duration
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func (o pushTimeoutOption) apply(cfg *config) {
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cfg.PushTimeout = time.Duration(o)
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}
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