Publish to Maven Central with JReleaser

.github/workflows/release.yml

@@ -0,0 +1,39 @@
+name: Release
+
+on:
+  push:
+    tags:
+      - 'v[0-9]+.[0-9]+.[0-9]+'
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+    steps:
+      - uses: actions/checkout@v5
+        with:
+          fetch-depth: 0
+      - uses: actions/setup-java@v5
+        with:
+          distribution: temurin
+          java-version: '17'
+      - uses: gradle/actions/setup-gradle@v5
+      - name: Check that the tag matches the project version
+        run: |
+          version=$(./gradlew -q properties --property version | sed -n 's/^version: //p')
+          if [ "v$version" != "$GITHUB_REF_NAME" ]; then
+            echo "Tag $GITHUB_REF_NAME does not match project version $version" >&2
+            exit 1
+          fi
+      - name: Build and test
+        run: ./gradlew build
+      - name: Publish with JReleaser
+        run: ./gradlew publishAllPublicationsToStagingRepository jreleaserFullRelease
+        env:
+          JRELEASER_GPG_SECRET_KEY: ${{ secrets.MAVEN_CENTRAL_GPG_SECRET_KEY }}
+          JRELEASER_GPG_PUBLIC_KEY: ${{ secrets.MAVEN_CENTRAL_GPG_PUBLIC_KEY }}
+          JRELEASER_GPG_PASSPHRASE: ${{ secrets.MAVEN_CENTRAL_GPG_PASSPHRASE }}
+          JRELEASER_MAVENCENTRAL_SONATYPE_USERNAME: ${{ secrets.MAVEN_CENTRAL_USERNAME }}
+          JRELEASER_MAVENCENTRAL_SONATYPE_PASSWORD: ${{ secrets.MAVEN_CENTRAL_PASSWORD }}
+          JRELEASER_GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

build.gradle.kts

@@ -1,7 +1,10 @@
+import org.jreleaser.model.Active
+
 plugins {
     id("java-library")
     id("checkstyle")
-    alias(libs.plugins.maven.publish)
+    id("maven-publish")
+    alias(libs.plugins.jreleaser)
 }
 
 group = "org.komamitsu"
@@ -12,6 +15,8 @@ java {
     toolchain {
         languageVersion = JavaLanguageVersion.of(17)
     }
+    withJavadocJar()
+    withSourcesJar()
 }
 
 repositories {
@@ -31,7 +36,7 @@ dependencies {
 // PackageVersion.java carries the coordinates and version Jackson reports via Versioned.
 // Generate it from the Gradle project so it cannot drift from the published POM.
 val packageDir = "org/komamitsu/jackson/dataformat/msgpack"
-val generatePackageVersion by tasks.registering {
+val generatePackageVersion = tasks.register("generatePackageVersion") {
     val outputDir = layout.buildDirectory.dir("generated/sources/packageVersion/java/main")
     val projectVersion = project.version.toString()
     val projectGroup = project.group.toString()
@@ -128,32 +133,63 @@ checkstyle {
     maxWarnings = 0
 }
 
-mavenPublishing {
-    publishToMavenCentral()
-    signAllPublications()
-
-    pom {
-        name = project.name
-        description = project.description
-        url = "https://github.com/komamitsu/jackson-dataformat-msgpack"
-        licenses {
-            license {
-                name = "Apache-2.0"
-                url = "https://www.apache.org/licenses/LICENSE-2.0.txt"
+// Publications are staged locally; JReleaser signs them and uploads them to the Central Portal.
+val stagingDir = layout.buildDirectory.dir("staging-deploy")
+
+publishing {
+    publications {
+        create<MavenPublication>("maven") {
+            from(components["java"])
+
+            pom {
+                name = project.name
+                description = project.description
+                url = "https://github.com/komamitsu/jackson-dataformat-msgpack"
+                licenses {
+                    license {
+                        name = "Apache-2.0"
+                        url = "https://www.apache.org/licenses/LICENSE-2.0.txt"
+                    }
+                }
+                developers {
+                    developer {
+                        id = "komamitsu"
+                        name = "Mitsunori Komatsu"
+                        email = "komamitsu@gmail.com"
+                        url = "https://github.com/komamitsu"
+                    }
+                }
+                scm {
+                    url = "https://github.com/komamitsu/jackson-dataformat-msgpack"
+                    connection = "scm:git:git://github.com/komamitsu/jackson-dataformat-msgpack.git"
+                    developerConnection = "scm:git:ssh://git@github.com/komamitsu/jackson-dataformat-msgpack.git"
+                }
             }
         }
-        developers {
-            developer {
-                id = "komamitsu"
-                name = "Mitsunori Komatsu"
-                email = "komamitsu@gmail.com"
-                url = "https://github.com/komamitsu"
-            }
+    }
+    repositories {
+        maven {
+            name = "staging"
+            url = uri(stagingDir)
         }
-        scm {
-            url = "https://github.com/komamitsu/jackson-dataformat-msgpack"
-            connection = "scm:git:git://github.com/komamitsu/jackson-dataformat-msgpack.git"
-            developerConnection = "scm:git:ssh://git@github.com/komamitsu/jackson-dataformat-msgpack.git"
+    }
+}
+
+jreleaser {
+    signing {
+        pgp {
+            active = Active.ALWAYS
+            armored = true
+        }
+    }
+    deploy {
+        maven {
+            mavenCentral.create("sonatype") {
+                active = Active.ALWAYS
+                url = "https://central.sonatype.com/api/v1/publisher"
+                applyMavenCentralRules = true
+                stagingRepository(stagingDir.get().asFile.path)
+            }
         }
     }
 }

gradle/libs.versions.toml

@@ -6,7 +6,7 @@ hamcrest = "3.0"
 commons-math3 = "3.6.1"
 jmh = "1.37"
 jmh-plugin = "0.7.3"
-maven-publish-plugin = "0.34.0"
+jreleaser = "1.26.0"
 
 [libraries]
 jackson-databind = { module = "tools.jackson.core:jackson-databind", version.ref = "jackson" }
@@ -18,4 +18,4 @@ commons-math3 = { module = "org.apache.commons:commons-math3", version.ref = "co
 
 [plugins]
 jmh = { id = "me.champeau.jmh", version.ref = "jmh-plugin" }
-maven-publish = { id = "com.vanniktech.maven.publish", version.ref = "maven-publish-plugin" }
+jreleaser = { id = "org.jreleaser", version.ref = "jreleaser" }