build: update central-publishing-maven-plugin to version 0.9.0 and add autoPublish configuration; add release workflow for GitHub Actions

Author: ChildrenGreens

.github/workflows/release.yml

@@ -0,0 +1,80 @@
+name: Release
+
+on:
+  push:
+    tags:
+      - "v*"
+  workflow_dispatch:
+
+permissions:
+  contents: write
+
+concurrency:
+  group: release-${{ github.ref }}
+  cancel-in-progress: false
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    environment: release
+    if: >
+      github.repository == 'ChildrenGreens/multi-source-spring-boot-starter' &&
+      startsWith(github.ref, 'refs/tags/v')
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Set release version
+        id: version
+        shell: bash
+        run: |
+          set -euo pipefail
+          TAG="${GITHUB_REF_NAME}"
+          VERSION="${TAG#v}"
+          if [[ "${VERSION}" == *SNAPSHOT* ]]; then
+            echo "Refusing to publish SNAPSHOT version from tag: ${TAG}" >&2
+            exit 1
+          fi
+          echo "tag=${TAG}" >> "$GITHUB_OUTPUT"
+          echo "version=${VERSION}" >> "$GITHUB_OUTPUT"
+
+      - name: Set up JDK 17 + Maven settings
+        uses: actions/setup-java@v4
+        with:
+          distribution: temurin
+          java-version: "17"
+          cache: maven
+          server-id: ossrh
+          server-username: MAVEN_USERNAME
+          server-password: MAVEN_PASSWORD
+          gpg-private-key: ${{ secrets.GPG_PRIVATE_KEY }}
+          gpg-passphrase: GPG_PASSPHRASE
+        env:
+          GPG_PASSPHRASE: ${{ secrets.GPG_PASSPHRASE }}
+
+      - name: Publish to Maven Central
+        env:
+          MAVEN_USERNAME: ${{ secrets.OSSRH_USERNAME }}
+          MAVEN_PASSWORD: ${{ secrets.OSSRH_PASSWORD }}
+          MAVEN_GPG_PASSPHRASE: ${{ secrets.GPG_PASSPHRASE }}
+        run: >
+          mvn -B -ntp
+          -Drevision=${{ steps.version.outputs.version }}
+          -Prelease
+          clean deploy
+
+      - name: Create GitHub Release
+        env:
+          GH_TOKEN: ${{ github.token }}
+        shell: bash
+        run: |
+          set -euo pipefail
+          TAG="${{ steps.version.outputs.tag }}"
+          if gh release view "${TAG}" >/dev/null 2>&1; then
+            echo "GitHub Release already exists for ${TAG}, skipping."
+            exit 0
+          fi
+          gh release create "${TAG}" --title "${TAG}" --generate-notes

pom.xml

@@ -241,10 +241,11 @@
                     <plugin>
                         <groupId>org.sonatype.central</groupId>
                         <artifactId>central-publishing-maven-plugin</artifactId>
-                        <version>0.6.0</version>
+                        <version>0.9.0</version>
                         <extensions>true</extensions>
                         <configuration>
                             <publishingServerId>ossrh</publishingServerId>
+                            <autoPublish>true</autoPublish>
                         </configuration>
                     </plugin>
                     <plugin>