Add jreleaser to enable publishing (snapshots) to maven central

Signed-off-by: Wei-Qiang Zhou <wei-qiang.zhou@alliander.com>

Author: wei-qiang

.github/workflows/java-gradle-ci.yml

@@ -51,3 +51,53 @@ jobs:
   reuse-compliance:
     name: REUSE Compliance
     uses: ./.github/workflows/reuse-compliance.yml
+
+  push-and-deploy:
+    name: Push Deployment Updates
+    needs: [build-and-test]
+    if: always() && github.ref_type == 'tag'
+    runs-on: ubuntu-latest
+    permissions:
+      id-token: write
+      contents: read
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # 7.0.1
+        with:
+          fetch-depth: 1
+          persist-credentials: false
+
+      - name: Setup runtime
+        uses: ./.github/actions/setup-runtime
+
+      - name: Cache Gradle
+        uses: actions/cache@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 #v6.1.0
+        with:
+          path: |
+            ~/.gradle/caches
+            ~/.gradle/wrapper
+          key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle*', '**/settings.gradle*') }}
+
+      - name: Optimize Gradle
+        shell: bash
+        run: |
+          mkdir -p ~/.gradle
+          echo "org.gradle.caching=true" >> ~/.gradle/gradle.properties
+          echo "org.gradle.configuration-cache=true" >> ~/.gradle/gradle.properties
+
+      - name: Gradle Release Build
+        env:
+          JRELEASER_GPG_PASSPHRASE: ${{ secrets.GPG_PASSPHRASE }}
+          JRELEASER_GPG_PUBLIC_KEY: ${{ secrets.GPG_PUBLIC_KEY }}
+          JRELEASER_GPG_SECRET_KEY: ${{ secrets.GPG_PRIVATE_KEY }}
+          SANITIZED_TAG: ${{ github.ref_name }}
+          JRELEASER_MAVENCENTRAL_USERNAME: ${{ secrets.MAVEN_USERNAME }}
+          JRELEASER_MAVENCENTRAL_PASSWORD: ${{ secrets.MAVEN_PASSWORD }}
+          JRELEASER_NEXUS2_USERNAME: ${{ secrets.MAVEN_USERNAME }}
+          JRELEASER_NEXUS2_PASSWORD: ${{ secrets.MAVEN_PASSWORD }}
+        run: |
+          echo "Performing release Gradle publish for tag: $SANITIZED_TAG"
+          
+          ./gradlew clean build \
+          jreleaserDeploy --dryrun -jreleaser.project.version=$SANITIZED_TAG

build.gradle

@@ -2,11 +2,15 @@
 //
 // SPDX-License-Identifier: MPL-2.0
 
+
+import org.jreleaser.model.Active
+
 import javax.inject.Inject
 
 plugins {
     id 'java'
     id 'maven-publish'
+    id 'org.jreleaser' version '1.26.0'
 }
 
 interface InjectedExecOps {
@@ -268,6 +272,20 @@ sourceSets {
     }
 }
 
+tasks.register('sourcesJar', Jar) {
+    dependsOn(tasks.named('generatePGMBindings'))
+    from sourceSets.main.java
+    archiveClassifier.set('sources')
+}
+
+artifacts {
+    archives sourcesJar
+}
+
+java {
+    withJavadocJar()
+}
+
 tasks.named('compileJava') {
     dependsOn(tasks.named('generatePGMBindings'))
 }
@@ -280,7 +298,60 @@ publishing {
     publications {
         mavenJava(MavenPublication) {
             from components.java
+            groupId = 'org.lfenergy.pgm'
             artifactId = 'lib-power-grid-model'
+
+            pom {
+                name = 'lib-power-grid-model'
+                description = ''
+                url = 'https://github.com/PowerGridModel/libpower-grid-model-java'
+                organization {
+                    name = 'LF Energy'
+                    url = 'https://lfenergy.org'
+                }
+                licenses {
+                    license {
+                        name = 'Mozilla Public License, Version 2.0"'
+                        url = 'https://www.mozilla.org/en-US/MPL/2.0/'
+                    }
+                }
+                developers {
+                    developer {
+                        email = 'powergridmodel@lfenergy.org'
+                    }
+                }
+                scm {
+                    url = 'https://github.com/PowerGridModel/libpower-grid-model-java'
+                    connection = 'scm:git:git://github.com/PowerGridModel/libpower-grid-model-java.git'
+                    developerConnection = 'scm:git:ssh://git@github.com/PowerGridModel/libpower-grid-model-java.git'
+                }
+            }
+
+        }
+    }
+}
+
+jreleaser {
+    signing {
+        active = 'ALWAYS'
+        armored = true
+    }
+    deploy {
+        maven {
+//            mavenCentral {
+//                'release-deploy' {
+//                    active = 'RELEASE'
+//                    url = 'https://central.sonatype.com/api/v1/publisher'
+//                }
+//            }
+            nexus2 {
+                'snapshot-deploy' {
+                    active = 'SNAPSHOT'
+                    snapshotUrl = 'https://central.sonatype.com/repository/maven-snapshots/'
+                    applyMavenCentralRules = true
+                    snapshotSupported = true
+                }
+            }
         }
     }
 }