client_golang

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Published: Nov 28, 2019 License: Apache-2.0

README

Prometheus Go client library

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This is the Go client library for Prometheus. It has two separate parts, one for instrumenting application code, and one for creating clients that talk to the Prometheus HTTP API.

This library requires Go1.9 or later. The mimimum required patch releases for older Go versions are Go1.9.7 and Go1.10.3.

Important note about releases and stability

This repository generally follows Semantic Versioning. However, the API client in prometheus/client_golang/api/… is still considered experimental. Breaking changes of the API client will not trigger a new major release. The same is true for selected other new features explicitly marked as EXPERIMENTAL in CHANGELOG.md.

Features that require breaking changes in the stable parts of the repository are being batched up and tracked in the v2 milestone. The v2 development happens in a separate branch for the time being. v2 releases off that branch will happen once sufficient stability is reached. In view of the widespread use of this repository, v1 and v2 will coexist for a while to enable a convenient transition.

Instrumenting applications

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The prometheus directory contains the instrumentation library. See the guide on the Prometheus website to learn more about instrumenting applications.

The examples directory contains simple examples of instrumented code.

Client for the Prometheus HTTP API

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The api/prometheus directory contains the client for the Prometheus HTTP API. It allows you to write Go applications that query time series data from a Prometheus server. It is still in alpha stage.

Where is model, extraction, and text?

The model packages has been moved to prometheus/common/model.

The extraction and text packages are now contained in prometheus/common/expfmt.

Contributing and community

See the contributing guidelines and the Community section of the homepage.

Directories

Path Synopsis
api
Package api provides clients for the HTTP APIs.
Package api provides clients for the HTTP APIs.
prometheus/v1
Package v1 provides bindings to the Prometheus HTTP API v1: http://prometheus.io/docs/querying/api/
Package v1 provides bindings to the Prometheus HTTP API v1: http://prometheus.io/docs/querying/api/
examples
random
A simple example exposing fictional RPC latencies with different types of random distributions (uniform, normal, and exponential) as Prometheus metrics.
A simple example exposing fictional RPC latencies with different types of random distributions (uniform, normal, and exponential) as Prometheus metrics.
simple
A minimal example of how to include Prometheus instrumentation.
A minimal example of how to include Prometheus instrumentation.
Package prometheus is the core instrumentation package.
Package prometheus is the core instrumentation package.
graphite
Package graphite provides a bridge to push Prometheus metrics to a Graphite server.
Package graphite provides a bridge to push Prometheus metrics to a Graphite server.
promauto
Package promauto provides constructors for the usual Prometheus metrics that return them already registered with the global registry (prometheus.DefaultRegisterer).
Package promauto provides constructors for the usual Prometheus metrics that return them already registered with the global registry (prometheus.DefaultRegisterer).
promhttp
Package promhttp provides tooling around HTTP servers and clients.
Package promhttp provides tooling around HTTP servers and clients.
push
Package push provides functions to push metrics to a Pushgateway.
Package push provides functions to push metrics to a Pushgateway.
testutil
Package testutil provides helpers to test code using the prometheus package of client_golang.
Package testutil provides helpers to test code using the prometheus package of client_golang.

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