mirror of
https://github.com/open-telemetry/opentelemetry-go.git
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109 lines
3.9 KiB
Markdown
109 lines
3.9 KiB
Markdown
# OpenTelemetry-Go
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[](https://circleci.com/gh/open-telemetry/opentelemetry-go)
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[](https://godoc.org/go.opentelemetry.io/otel)
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[](https://goreportcard.com/report/go.opentelemetry.io/otel)
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[](https://gitter.im/open-telemetry/opentelemetry-go?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge)
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The Go [OpenTelemetry](https://opentelemetry.io/) client.
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## Installation
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This repository includes multiple packages. The `api`
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package contains core data types, interfaces and no-op implementations that comprise the OpenTelemetry API following
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[the
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specification](https://github.com/open-telemetry/opentelemetry-specification).
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The `sdk` package is the reference implementation of the API.
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Libraries that produce telemetry data should only depend on `api`
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and defer the choice of the SDK to the application developer. Applications may
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depend on `sdk` or another package that implements the API.
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To install the API and SDK packages,
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```
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$ go get -u go.opentelemetry.io/otel
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```
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## Quick Start
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```go
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package main
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import (
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"context"
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"log"
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"go.opentelemetry.io/otel/api/global"
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"go.opentelemetry.io/otel/exporter/trace/stdout"
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sdktrace "go.opentelemetry.io/otel/sdk/trace"
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)
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func initTracer() {
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exporter, err := stdout.NewExporter(stdout.Options{PrettyPrint: true})
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if err != nil {
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log.Fatal(err)
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}
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tp, err := sdktrace.NewProvider(sdktrace.WithConfig(sdktrace.Config{DefaultSampler: sdktrace.AlwaysSample()}),
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sdktrace.WithSyncer(exporter))
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if err != nil {
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log.Fatal(err)
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}
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global.SetTraceProvider(tp)
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}
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func main() {
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initTracer()
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tracer := global.TraceProvider().Tracer("ex.com/basic")
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tracer.WithSpan(context.Background(), "foo",
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func(ctx context.Context) error {
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tracer.WithSpan(ctx, "bar",
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func(ctx context.Context) error {
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tracer.WithSpan(ctx, "baz",
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func(ctx context.Context) error {
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return nil
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},
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)
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return nil
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},
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)
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return nil
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},
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)
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}
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```
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See the [API
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documentation](https://godoc.org/go.opentelemetry.io/otel) for more
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detail, and the
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[opentelemetry-example-app](./example/README.md)
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for a complete example.
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## Contributing
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See the [contributing file](CONTRIBUTING.md).
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## Release Schedule
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OpenTelemetry Go is under active development. Below is the release schedule
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for the Go library. The first version of the release isn't guaranteed to conform
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to a specific version of the specification, and future releases will not
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attempt to maintain backward compatibility with the alpha release.
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| Component | Version | Target Date | Release Date |
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| -------------------------------- | ------------ | ---------------- | ---------------- |
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| Tracing API | Alpha v0.1.0 | October 28 2019 | November 05 2019 |
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| Tracing SDK | Alpha v0.1.0 | October 28 2019 | November 05 2019 |
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| Jaeger Trace Exporter | Alpha v0.1.0 | October 28 2019 | November 05 2019 |
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| Trace Context Propagation | Alpha v0.1.0 | Unknown | November 05 2019 |
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| OpenTracing Bridge | Alpha v0.1.0 | October | November 05 2019 |
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| Metrics API | Alpha v0.2.0 | October 28 2019 | December 03 2019 |
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| Metrics SDK | Alpha v0.2.0 | October 28 2019 | December 03 2019 |
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| Prometheus Metrics Exporter | Alpha v0.2.0 | October 28 2019 | December 03 2019 |
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| Context Prop. rename/Baggage | Alpha v0.3.0 | December 23 2019 | - |
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| OpenTelemetry Collector Exporter | Alpha v0.4.0 | January 15 2020 | - |
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| Zipkin Trace Exporter | Alpha | Unknown | - |
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| OpenCensus Bridge | Alpha | Unknown | - |
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