69 lines
3.5 KiB
Markdown
69 lines
3.5 KiB
Markdown
# Prometheus Go client library
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[](https://circleci.com/gh/prometheus/client_golang/tree/master)
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[](https://goreportcard.com/report/github.com/prometheus/client_golang)
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[](https://pkg.go.dev/github.com/prometheus/client_golang)
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This is the [Go](http://golang.org) client library for
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[Prometheus](http://prometheus.io). It has two separate parts, one for
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instrumenting application code, and one for creating clients that talk to the
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Prometheus HTTP API.
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__This library requires Go1.13 or later.__
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## Important note about releases and stability
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This repository generally follows [Semantic
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Versioning](https://semver.org/). However, the API client in
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prometheus/client_golang/api/… is still considered experimental. Breaking
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changes of the API client will _not_ trigger a new major release. The same is
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true for selected other new features explicitly marked as **EXPERIMENTAL** in
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CHANGELOG.md.
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Features that require breaking changes in the stable parts of the repository
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are being batched up and tracked in the [v2
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milestone](https://github.com/prometheus/client_golang/milestone/2). The v2
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development happens in a [separate
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branch](https://github.com/prometheus/client_golang/tree/dev-v2) for the time
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being. v2 releases off that branch will happen once sufficient stability is
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reached. In view of the widespread use of this repository, v1 and v2 will
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coexist for a while to enable a convenient transition.
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## Instrumenting applications
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[](http://gocover.io/github.com/prometheus/client_golang/prometheus) [](https://pkg.go.dev/github.com/prometheus/client_golang/prometheus)
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The
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[`prometheus` directory](https://github.com/prometheus/client_golang/tree/master/prometheus)
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contains the instrumentation library. See the
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[guide](https://prometheus.io/docs/guides/go-application/) on the Prometheus
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website to learn more about instrumenting applications.
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The
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[`examples` directory](https://github.com/prometheus/client_golang/tree/master/examples)
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contains simple examples of instrumented code.
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## Client for the Prometheus HTTP API
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[](http://gocover.io/github.com/prometheus/client_golang/api/prometheus/v1) [](https://pkg.go.dev/github.com/prometheus/client_golang/api)
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The
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[`api/prometheus` directory](https://github.com/prometheus/client_golang/tree/master/api/prometheus)
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contains the client for the
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[Prometheus HTTP API](http://prometheus.io/docs/querying/api/). It allows you
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to write Go applications that query time series data from a Prometheus
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server. It is still in alpha stage.
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## Where is `model`, `extraction`, and `text`?
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The `model` packages has been moved to
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[`prometheus/common/model`](https://github.com/prometheus/common/tree/master/model).
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The `extraction` and `text` packages are now contained in
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[`prometheus/common/expfmt`](https://github.com/prometheus/common/tree/master/expfmt).
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## Contributing and community
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See the [contributing guidelines](CONTRIBUTING.md) and the
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[Community section](http://prometheus.io/community/) of the homepage.
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