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RELEASING.md

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Release process

We release protobuf-gradle-plugin to both Maven Central and Gradle Plugin Portal.

Prerequisites

  1. If you haven't deployed artifacts to Maven Central or Gradle Plugin Portal before, you need to set up your OSSRH (OSS Repository Hosting) account and Gradle Plugin Portal account.

  2. Make sure your account is added to the project on Sonatype and Gradle Plugin Portal.

  • Sonatype: create a support ticket on issues.sonatype.org to acquire access to com.google.protobuf:protobuf-gradle-plugin project.

  • Gradle Plugin Portal: follow instructions on this page to acquire permission for publishing new versions.

  1. Generate and publish GnuPG key:
  • Run gpg --full-generate-key to generate the key.
  • Run gpg -keyring secring.gpg --export-secretkeys > ~/.gnupg/secring.gpg to export your key.
  • Run gpg --keyserver certserver.pgp.com --send-keys <keyId> to publish your key, where keyId is the last 8 characters of the long hex from gpg --list=keys. You may need to prefix keyId with 0x notation.
  1. Edit your Gradle user properties file (default location is $USER_HOME/.gradle/gradle.properties):
  • Make sure ossrhUsername and ossrhPassword are added according to your Sonatype user credentials.
  • Make sure gradle.publish.key and gradle.publish.secret are added according to your API key under the "API Keys" tab in your profile page of Gradle Plugin Portal.
  • Add your key information:
signing.keyId=<last 8 characters of the long hex from gpg --list-keys>
signing.password=<your password for signing your GPG key>
signing.secretKeyRingFile=</path/to/.gnupg/secring.gpg>

Releasing

  1. Make release commit:
  • Edit build.gradle:
    • remove “-SNAPSHOT” from version. Assuming the version is $RELEASE_VERSION.
  • Edit README.md:
    • The “latest version” shown should be a version prior to $RELEASE_VERSION. Will refer it as $PREV_VERSION.
    • Replace all $PREV_VERSION to $RELEASE_VERSION.
    • Update Gradle and/or Java version requirement if necessary
  • Run ./gradlew clean build.
  • Run git commit -a -m “$RELEASE_VERSION release”.
  • Run git tag -a v$RELEASE_VERSION -m “The $RELEASE_VERSION release”.
  1. Make commit for next version:
  • Refer to the next version as $NEXT_VERSION
  • Edit build.gradle: change version from $RELEASE_VERSION to $NEXT_VERSION-SNAPSHOT.
  • Edit README.md: replace $RELEASE_VERSION-SNAPSHOT with $NEXT_VERSION-SNAPSHOT.
  • Run git commit -a -m “Start $NEXT_VERSION development cycle”
  1. Publish artifacts:
  • Run git checkout v$RELEASE_VERSION.
  • Release on Maven Central:
    • Run ./gradlew publish.
    • Go to the OSSRH site, under “Staging Repositories”, close and release the artifact.
  • Release on Gradle Plugin Portal:
    • Run ./gradlew publishPlugins.
  • Verify that artifacts are available on Maven Central (may take a few minutes up to hours) and Gradle Plugin Portal (should be available immediately).
  1. Push commits:
  • Run git push upstream master.
  • Run git push --tags upstream.
  1. Create release notes.