https://github.com/prometheus/client_rust

Prometheus / OpenMetrics client library in Rust
https://github.com/prometheus/client_rust

instrumentation metrics monitoring openmetrics prometheus

Last synced: about 2 months ago
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Prometheus / OpenMetrics client library in Rust

• Host: GitHub
• URL: https://github.com/prometheus/client_rust
• Owner: prometheus
• License: apache-2.0
• Created: 2020-12-21T20:17:25.000Z (over 4 years ago)
• Default Branch: master
• Last Pushed: 2025-02-27T08:57:26.000Z (3 months ago)
• Last Synced: 2025-03-09T22:50:49.333Z (2 months ago)
• Topics: instrumentation, metrics, monitoring, openmetrics, prometheus
• Language: Rust
• Homepage:
• Size: 358 KB
• Stars: 519
• Watchers: 5
• Forks: 87
• Open Issues: 63
• Metadata Files:
  • Readme: README.md
  • Changelog: CHANGELOG.md
  • Contributing: CONTRIBUTING.md
  • License: LICENSE-APACHE
  • Code of conduct: CODE_OF_CONDUCT.md
  • Security: SECURITY.md

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README

        
# Prometheus Rust client library

[![Test Status](https://github.com/prometheus/client_rust/actions/workflows/rust.yml/badge.svg?event=push)](https://github.com/prometheus/client_rust/actions)

[![Crate](https://img.shields.io/crates/v/prometheus-client.svg)](https://crates.io/crates/prometheus-client)

[![API](https://docs.rs/prometheus-client/badge.svg)](https://docs.rs/prometheus-client)

[Rust](https://github.com/rust-lang/) client library implementation of the [Open

Metrics specification](https://github.com/OpenObservability/OpenMetrics). Allows

developers to instrument applications and thus enables operators to monitor said

applications with monitoring systems like [Prometheus](https://prometheus.io/).

**Documentation**: https://docs.rs/prometheus-client/

## Goals

- No `unsafe`. Don't use unsafe Rust within the library itself.

- Type safe. Leverage Rust's type system to catch common instrumentation

  mistakes at compile time.

- Fast. Don't force users to worry about the performance impact of

  instrumentation. Instead encourage users to instrument often and extensively.

## Specification Compliance

Below is a list of properties where this client library implementation lags

behind the Open Metrics specification. Not being compliant with all requirements

(`MUST` and `MUST NOT`) of the specification is considered a bug and likely to

be fixed in the future. Contributions in all forms are most welcome.

- State set metric.

- Enforce "A Histogram MetricPoint MUST contain at least one bucket".

- Enforce "A MetricFamily MUST have a [...] UNIT metadata".

- Enforce "MetricFamily names [...] MUST be unique within a MetricSet."

- Enforce "Names SHOULD be in snake_case".

- Enforce "MetricFamily names beginning with underscores are RESERVED and MUST

  NOT be used unless specified by this standard".

- Enforce "Exposers SHOULD avoid names that could be confused with the suffixes

  that text format sample metric names use".

- Gauge histogram metric.

- Allow "A MetricPoint in a Metric with the type [Counter, Histogram] SHOULD have a Timestamp

  value called Created".

- Summary metric.

## Related Libraries

- [rust-prometheus](https://github.com/tikv/rust-prometheus/): See [tikv/rust-prometheus/#392](https://github.com/tikv/rust-prometheus/issues/392) for a high-level comparison.

## License

Licensed under either of

 * Apache License, Version 2.0 ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)

 * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)

at your option.

#### Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted

for inclusion in the work by you, as defined in the Apache-2.0 license, shall be

dual licensed as above, without any additional terms or conditions.