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Getting Started   •   API Documentation   •   Getting In Touch (Gitter)

GitHub release (latest by date including pre-releases) Codecov Status license
Build Status Beta

Contributing   •   Development Guide   •   Benchmarks   •   Examples


About this project

This is the JavaScript version of OpenTelemetry, a framework for collecting traces and metrics from applications.

Quick start

Application Owner

To get started tracing your own application, see the Getting Started Guide. For more information about automatic instrumentation see @opentelemetry/node, which provides auto-instrumentation for Node.js applications. If the automatic instrumentation does not suit your needs, or you would like to create manual traces, see @opentelemetry/tracing

Library Author

If you are a library author looking to build OpenTelemetry into your library, please see the documentation. As a library author, it is important that you only depend on properties and methods published on the public API. If you use any properties or methods from the SDK that are not officially a part of the public API, your library may break if an Application Owner uses a different SDK implementation.

Supported Runtimes

Platform Version Supported
Node.JS v14
Node.JS v12
Node.JS v10
Node.JS v8 See Node Support below
Web Browsers ✅ See Browser Support below

Node Support

Automated tests are run using the latest release of each currently active version of Node.JS. While Node.JS v8 is no longer supported by the Node.JS team, the latest version of Node.JS v8 is still included in our testing suite. Please note that versions of Node.JS v8 prior to v8.5.0 will NOT work, because OpenTelemetry Node depends on the perf_hooks module introduced in v8.5.0

Browser Support

Automated browser tests are run in the latest version of Headless Chrome. There is currently no list of officially supported browsers, but OpenTelemetry is developed using standard web technologies with wide support and should work in currently supported versions of major browsers.

Release Schedule

OpenTelemetry JS is under active development. This release isn't guaranteed to conform to a specific version of the specification, and future releases will not attempt to maintain backwards compatibility with the alpha release.

Component Initial Version Release Date
Tracing API Alpha v0.1.0 October 14 2019
Tracing SDK (Node and Web) Alpha v0.1.0 October 14 2019
Jaeger Trace Exporter Alpha v0.1.0 October 14 2019
Trace Context Propagation Alpha v0.1.0 October 14 2019
Zipkin Trace Exporter Alpha v0.1.0 October 14 2019
OpenTracing Bridge Alpha v0.1.0 October 14 2019
Metrics API Alpha v0.2.0 November 04 2019
Metrics SDK Alpha v0.2.0 November 04 2019
Prometheus Metric Exporter Alpha v0.3.0 December 13 2019
Resources Beta v0.5.0 March 16 2020
Metrics SDK (Complete) Beta v0.5.0 March 16 2020
OpenCensus Bridge Unknown Unknown
Support for Tags/Baggage Unknown Unknown

Feature Status

Last updated March 2020

Feature API Status Specification Target SDK Status
Tracing Beta v0.3 Beta
Metrics Beta v0.3 Beta
Context Beta v0.3 Beta
Propagation Beta v0.3 Beta
Correlation Context Alpha v0.3 Development
OpenTracing Bridge N/A v0.3 Beta
Resources N/A v0.3 Beta

See the project milestones for details on upcoming releases. The dates and features described here are estimates, and subject to change.

Contributing

We'd love your help!. Use tags up-for-grabs and good first issue to get started with the project. Follow CONTRIBUTING guide to report issues or submit a proposal.

We have a weekly SIG meeting! See the community page for meeting details and notes.

Approvers (@open-telemetry/js-approvers):

Find more about the approver role in community repository.

Maintainers (@open-telemetry/js-maintainers):

Find more about the maintainer role in community repository.

Thanks to all the people who already contributed

Packages

API

Package Description
@opentelemetry/api This package provides TypeScript interfaces, enums and no-op implementations for the OpenTelemetry core trace and metrics model. It is intended for use both on the server and in the browser.
@opentelemetry/core This package provides default and no-op implementations of the OpenTelemetry api for trace and metrics. It's intended for use both on the server and in the browser.

Implementation / SDKs

Package Description
@opentelemetry/tracing This module provides a full control over instrumentation and span creation. It doesn't load async_hooks or any instrumentation plugin by default. It is intended for use both on the server and in the browser.
@opentelemetry/metrics This module provides instruments and meters for reporting of time series data.
@opentelemetry/node This module provides automatic tracing for Node.js applications. It is intended for use on the server only.
@opentelemetry/web This module provides automated instrumentation and tracing for Web applications. It is intended for use in the browser only.

Compatible Exporters

OpenTelemetry is vendor-agnostic and can upload data to any backend with various exporter implementations. Even though, OpenTelemetry provides support for many backends, vendors/users can also implement their own exporters for proprietary and unofficially supported backends.

See the OpenTelemetry registry for a list of exporters available.

Plugins

OpenTelemetry can collect tracing data automatically using plugins. Vendors/Users can also create and use their own. Currently, OpenTelemetry supports automatic tracing for:

Node Plugins

Core
Contrib

These plugins are hosted at https://github.com/open-telemetry/opentelemetry-js-contrib/tree/master/plugins/node

Web Plugins

Core
Contrib

These plugins are hosted at https://github.com/open-telemetry/opentelemetry-js-contrib/tree/master/plugins/web

To request automatic tracing support for a module not on this list, please file an issue. Alternatively, you can write a plugin yourself.

Shims

Package Description
@opentelemetry/shim-opentracing OpenTracing shim allows existing OpenTracing instrumentation to report to OpenTelemetry

Useful links

License

Apache 2.0 - See LICENSE for more information.

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OpenTelemetry JavaScript API and SDK

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