deploy.yml

name: Deploy Snapshots and Publish Releases to the Maven Central Repository

on:
  # Snapshots
  push:
    branches: [main]
  # Releases
  release:
    types: [created]

jobs:
  deploy:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v2
    - uses: actions/setup-java@v2
      with:
        distribution: 'adopt'
        java-version: '11'
    - name: Cache Local Maven Repository
      uses: actions/cache@v2
      with:
        path: ~/.m2/repository
        key: ${{ runner.os }}-maven-${{ hashFiles('**/pom.xml') }}
        restore-keys: |
          ${{ runner.os }}-maven-
    - name: Verify and Update Version in pom.xml
      run: |
        VERSION=$(mvn -B -Dexec.executable='echo' -Dexec.args='${project.version}' --non-recursive exec:exec -q)
        echo "Found version: ${VERSION}"

        if [[ "${{ github.event_name }}" == "release" ]]; then
          VERSION=$(echo "${{ github.event.release.tag_name }}" | sed -e 's/^v//gi')
          echo "Release: updating version to ${VERSION}"
          mvn -B versions:set -DnewVersion=${VERSION} -DgenerateBackupPoms=false
        elif [[ ! "${VERSION}" =~ -SNAPSHOT$ ]]; then
          echo "Missing SNAPSHOT in version: ${VERSION}"
          exit 1
        fi
    - name: Release Maven Package
      uses: samuelmeuli/action-maven-publish@v1
      with:
        maven_args: -Ddeploy
        gpg_private_key: ${{ secrets.GPG_PRIVATE_KEY }}
        gpg_passphrase: ${{ secrets.GPG_PASSPHRASE }}
        nexus_username: ${{ secrets.OSSRH_USERNAME }}
        nexus_password: ${{ secrets.OSSRH_TOKEN }}