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Prometheus instrumentation library for Go applications
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Add exemplar support for const histogram and const metric (#986) 
* Add support for exemplars on constHistogram

Co-authored-by: William Perron <william.perron@shopify.com>
Signed-off-by: William Perron <william.perron@shopify.com>

* remove GetExemplars function

Signed-off-by: William Perron <william.perron@shopify.com>

* fixed linting warnings

reduce repetition in constHistogram w/ exemplar

Signed-off-by: William Perron <william.perron@shopify.com>

* Add values to correct bucket

Signed-off-by: William Perron <william.perron@shopify.com>

* Misc fixes

Co-authored-by: Francis Bogsanyi <francis.bogsanyi@shopify.com>

Signed-off-by: William Perron <william.perron@shopify.com>

* avoid panic when there are fewer buckets than exemplars

Co-authored-by: Arun Mahendra <arun.mahendra@shopify.com>

Signed-off-by: William Perron <william.perron@shopify.com>

* Added MustNewMetricWithExemplars that wraps metrics with exemplar (#3)

Changes:
* Make sure to not "leak" dto.Metric
* Reused upper bounds we already have for histogram
* Common code for all types.

Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com>

Co-authored-by: Arun Mahendra <arun.mahendra@shopify.com>
Co-authored-by: Bartlomiej Plotka <bwplotka@gmail.com>
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api API client: make http reads more efficient (#976) 2022-01-25 11:16:10 +01:00
examples Fix deprecated `NewBuildInfoCollector` API 2022-03-16 17:46:48 +08:00
prometheus Add exemplar support for const histogram and const metric (#986) 2022-03-17 11:30:41 +00:00
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VERSION Cut v1.12.1 (#978) 2022-01-29 15:48:34 +01:00
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README.md

Prometheus Go client library

CircleCI Go Report Card Go Reference

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 Go1.15 or later.

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

code-coverage Go Reference

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

code-coverage Go Reference

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.