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RELEASING.md

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Versioning and releasing

OpenTelemetry Auto-Instrumentation for Java uses SemVer standard for versioning of its artifacts.

The version is specified in version.gradle.kts.

Snapshot builds

Every successful CI build of the main branch automatically executes ./gradlew publishToSonatype as the last step, which publishes a snapshot build to Sonatype OSS snapshots repository.

Release cadence

This repository roughly targets monthly minor releases from the main branch on the Wednesday after the second Monday of the month (roughly a few of days after the monthly minor release of opentelemetry-java).

Preparing a new major or minor release

  • Check that renovate has run sometime in the past day (this link is only accessible if you have write access to the repository), and check that all renovate PRs have been merged.
  • Close the release milestone if there is one.
  • Merge a pull request to main updating the CHANGELOG.md.
    • The heading for the unreleased entries should be ## Unreleased.
    • Use .github/scripts/draft-change-log-entries.sh as a starting point for writing the change log.
  • Run the Prepare release branch workflow.
    • Press the "Run workflow" button, and leave the default branch main selected.
    • Review and merge the two pull requests that it creates (one is targeted to the release branch and one is targeted to main).

Preparing a new patch release

All patch releases should include only bug-fixes, and must avoid adding/modifying the public APIs.

In general, patch releases are only made for regressions, security vulnerabilities, memory leaks and deadlocks.

  • Backport pull request(s) to the release branch.
    • Run the Backport workflow.
    • Press the "Run workflow" button, then select the release branch from the dropdown list, e.g. release/v1.9.x, then enter the pull request number that you want to backport, then click the "Run workflow" button below that.
    • Review and merge the backport pull request that it generates.
    • Note: if the PR contains any changes to workflow files, it will have to be manually backported, because the default GITHUB_TOKEN does not have permission to update workflow files (and the opentelemetrybot token doesn't have write permission to this repository at all, so while it can be used to open a PR, it can't be used to push to a local branch).
  • Merge a pull request to the release branch updating the CHANGELOG.md.
    • The heading for the unreleased entries should be ## Unreleased.
  • Run the Prepare patch release workflow.
    • Press the "Run workflow" button, then select the release branch from the dropdown list, e.g. release/v1.9.x, and click the "Run workflow" button below that.
    • Review and merge the pull request that it creates for updating the version.

Making the release

  • Run the Release workflow.
    • Press the "Run workflow" button, then select the release branch from the dropdown list, e.g. release/v1.9.x, and click the "Run workflow" button below that.
    • This workflow will publish the artifacts to maven central and will publish a GitHub release with release notes based on the change log and with the javaagent jar attached.
    • Review and merge the pull request that it creates for updating the apidiff baseline version to the newly released version (note that this pull request won't be made until after the release is available in maven central).
    • Review and merge the pull request that it creates for updating the change log in main (note that if this is not a patch release then the change log on main may already be up-to-date, in which case no pull request will be created).

Credentials

Same as the core repo, see opentelemetry-java/RELEASING.md#credentials.