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RELEASE.md

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OpenZipkin Release Process

This repo uses semantic versions. Please keep this in mind when choosing version numbers.

  1. Alert others you are releasing

    There should be no commits made to master while the release is in progress (about 10 minutes). Before you start a release, alert others on gitter so that they don't accidentally merge anything. If they do, and the build fails because of that, you'll have to recreate the release tag described below.

  2. Push a git tag

    The trigger format is release-MAJOR.MINOR.PATCH, ex git tag release-1.18.1 && git push origin release-1.18.1.

  3. Wait for CI

    The release-MAJOR.MINOR.PATCH tag triggers build-bin/maven/maven_release, which creates commits, MAJOR.MINOR.PATCH tag, and increments the version (maven-release-plugin).

    The MAJOR.MINOR.PATCH tag triggers build-bin/deploy, which does the following:

    Notes:

Credentials

The release process uses various credentials. If you notice something failing due to unauthorized, look at the notes in [.github/workflows/deploy.yml] and check the org secrets.

Troubleshooting invalid credentials

If you receive a '401 unauthorized' failure from OSSRH, it is likely SONATYPE_USER or SONATYPE_PASSWORD entries are invalid, or possibly the user associated with them does not have rights to upload.

The least destructive test is to try to publish a snapshot manually. By passing the values CI would use, you can kick off a snapshot from your laptop. This is a good way to validate that your unencrypted credentials are authorized.

Here's an example of a snapshot deploy with specified credentials.

$ export GPG_TTY=$(tty) && GPG_PASSPHRASE=whackamole SONATYPE_USER=adrianmole SONATYPE_PASSWORD=ed6f20bde9123bbb2312b221 build-bin/build-bin/maven/maven_deploy

First release of the year

The license plugin verifies license headers of files include a copyright notice indicating the years a file was affected. This information is taken from git history. There's a once-a-year problem with files that include version numbers (pom.xml). When a release tag is made, it increments version numbers, then commits them to git. On the first release of the year, further commands will fail due to the version increments invalidating the copyright statement. The way to sort this out is the following:

Before you do the first release of the year, move the SNAPSHOT version back and forth from whatever the current is. In-between, re-apply the licenses.

$ ./mvnw versions:set -DnewVersion=1.3.3-SNAPSHOT -DgenerateBackupPoms=false
$ ./mvnw com.mycila:license-maven-plugin:format
$ ./mvnw versions:set -DnewVersion=1.3.2-SNAPSHOT -DgenerateBackupPoms=false
$ git commit -am"Adjusts copyright headers for this year"

Manually releasing

If for some reason, you lost access to CI or otherwise cannot get automation to work, bear in mind this is a normal maven project, and can be released accordingly.

Note: If Sonatype is down, the below will not work.

# First, set variable according to your personal credentials. These would normally be assigned as
# org secrets: https://github.com/organizations/openzipkin/settings/secrets/actions
export GPG_TTY=$(tty)
export GPG_PASSPHRASE=your_gpg_passphrase
export SONATYPE_USER=your_sonatype_account
export SONATYPE_PASSWORD=your_sonatype_password
release_version=xx-version-to-release-xx

# now from latest master, create the release. This creates and pushes the MAJOR.MINOR.PATCH tag
./build-bin/maven/maven_release release-${release_version}

# once this works, deploy the release
git checkout ${release_version}
./build-bin/deploy

# Finally, clean up
./mvnw release:clean
git checkout master
git reset HEAD --hard