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Release Process

This project uses the multimod releaser tool to manage releases. This document will walk you through how to perform a release using this tool for this repository.

Start a release

First, decide which module sets will have their versions changed and what those versions will be. If you are making a release to upgrade the upstream go.opentelemetry.io/otel packages, all module sets will likely need to be released.

Create a release branch

Update the versions of the module sets you have identified in versions.yaml. Commit this change to a new release branch.

Upgrade go.opentelemetry.io/otel packages

If the upstream go.opentelemetry.io/otel project has made a release, this project needs to be upgraded to use that release.

make sync-core COREPATH=<path to go.opentelemetry.io/otel repository>

This will use multimod to upgrade all go.opentelemetry.io/otel packages to the latest tag found in the local copy of the project. Be sure to have this project up to date.

Commit these changes to your release branch.

Update module set versions

Set the version for all the module sets you have identified to be released.

make prerelease MODSET=<module set>

This will use multimod to upgrade the module's versions and create a new "prerelease" branch for the changes. Verify the changes that were made.

git diff HEAD..prerelease_<module set>_<version>

Fix any issues if they exist in that prerelease branch, and when ready, merge it into your release branch.

git merge prerelease_<module set>_<version>

Update the CHANGELOG.md

Update the Changelog. Make sure only changes relevant to this release are included and the changes are communicated in language that non-contributors to the project can understand.

Double check there is no change missing by looking directly at the commits since the last release tag.

git --no-pager log --pretty=oneline "<last tag>..HEAD"

Be sure to update all the appropriate links at the bottom of the file.

Finally, commit this change to your release branch.

Make a Pull Request

Push your release branch and create a pull request for the changes. Be sure to include the curated changes your included in the changelog in the description. Especially include the change PR references, as this will help show viewers of the repository looking at these PRs that they are included in the release.

Tag a release

Once the Pull Request with all the version changes has been approved and merged it is time to tag the merged commit.

IMPORTANT: It is critical you use the same tag that you used in the Pre-Release step! Failure to do so will leave things in a broken state. As long as you do not change versions.yaml between pre-release and this step, things should be fine.

  1. For each module set that will be released, run the add-tags make target using the <commit-hash> of the commit on the main branch for the merged Pull Request.

    make add-tags MODSET=<module set> COMMIT=<commit hash>

    It should only be necessary to provide an explicit COMMIT value if the current HEAD of your working directory is not the correct commit.

  2. Push tags to the upstream remote (not your fork: github.com/open-telemetry/opentelemetry-go-contrib.git). Make sure you push all sub-modules as well.

    export VERSION="<version>"
for t in $( git tag -l | grep "$VERSION" ); do git push upstream "$t"; done

Release

Finally create a Release on GitHub. If you are release multiple versions for different module sets, be sure to use the stable release tag but be sure to include each version in the release title (i.e. Release v1.0.0/v0.25.0). The release body should include all the curated changes from the Changelog for this release.