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Contributing to opentelemetry-python

The Python special interest group (SIG) meets regularly. See the OpenTelemetry community repo for information on this and other language SIGs.

See the public meeting notes for a summary description of past meetings. To request edit access, join the meeting or get in touch on Gitter.

See to the community membership document on how to become a Member, Approver and Maintainer.

Find your right repo

This is the main repo for OpenTelemetry Python. Nevertheless, there are other repos that are related to this project. Please take a look at this list first, your contributions may belong in one of these repos better:

  1. OpenTelemetry Contrib: Instrumentations for third-party libraries and frameworks. There is an ongoing effort to migrate into the Opentelemetry Contrib repo some of the existing programmatic instrumentations that are now in the ext directory in the main OpenTelemetry repo. Please ask in the Gitter channel (see below) for guidance if you want to contribute with these instrumentations.

Find a Buddy and get Started Quickly!

If you are looking for someone to help you find a starting point and be a resource for your first contribution, join our Gitter and find a buddy!

  1. Join Gitter.im and join our chat room.
  2. Post in the room with an introduction to yourself, what area you are interested in (check issues marked "Help Wanted"), and say you are looking for a buddy. We will match you with someone who has experience in that area.

Your OpenTelemetry buddy is your resource to talk to directly on all aspects of contributing to OpenTelemetry: providing context, reviewing PRs, and helping those get merged. Buddies will not be available 24/7, but is committed to responding during their normal contribution hours.

Development

To quickly get up and running, you can use the scripts/eachdist.py tool that ships with this project. First create a virtualenv and activate it. Then run python scripts/eachdist.py develop to install all required packages as well as the project's packages themselves (in --editable mode). You can then run scripts/eachdist.py test to test everything or scripts/eachdist.py lint to lint everything (fixing anything that is auto-fixable).

Additionally, this project uses tox to automate some aspects of development, including testing against multiple Python versions.

You can run:

  • tox to run all existing tox commands, including unit tests for all packages under multiple Python versions
  • tox -e docs to regenerate the API docs
  • tox -e test-api and tox -e test-sdk to run the API and SDK unit tests
  • tox -e py37-test-api to e.g. run the API unit tests under a specific Python version
  • tox -e lint to run lint checks on all code

See tox.ini for more detail on available tox commands.

Pull Requests

How to Send Pull Requests

Everyone is welcome to contribute code to opentelemetry-python via GitHub pull requests (PRs).

To create a new PR, fork the project in GitHub and clone the upstream repo:

$ git clone https://github.com/open-telemetry/opentelemetry-python.git

Add your fork as an origin:

$ git remote add fork https://github.com/YOUR_GITHUB_USERNAME/opentelemetry-python.git

Run tests:

# make sure you have all supported versions of Python installed
$ pip install tox  # only first time.
$ tox  # execute in the root of the repository

Check out a new branch, make modifications and push the branch to your fork:

$ git checkout -b feature
# edit files
$ git commit
$ git push fork feature

Open a pull request against the main opentelemetry-python repo.

How to Receive Comments

  • If the PR is not ready for review, please put [WIP] in the title, tag it as work-in-progress, or mark it as draft.
  • Make sure CLA is signed and CI is clear.

How to Get PRs Merged

A PR is considered to be ready to merge when:

  • It has received two approvals from Approvers / Maintainers (at different companies).
  • Major feedbacks are resolved.
  • It has been open for review for at least one working day. This gives people reasonable time to review.
  • Trivial change (typo, cosmetic, doc, etc.) doesn't have to wait for one day.
  • Urgent fix can take exception as long as it has been actively communicated.

Any Approver / Maintainer can merge the PR once it is ready to merge.

Design Choices

As with other OpenTelemetry clients, opentelemetry-python follows the opentelemetry-specification.

It's especially valuable to read through the library guidelines.

Focus on Capabilities, Not Structure Compliance

OpenTelemetry is an evolving specification, one where the desires and use cases are clear, but the method to satisfy those uses cases are not.

As such, contributions should provide functionality and behavior that conforms to the specification, but the interface and structure is flexible.

It is preferable to have contributions follow the idioms of the language rather than conform to specific API names or argument patterns in the spec.

For a deeper discussion, see: open-telemetry/opentelemetry-specification#165

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