Add maven release workflow (OpenAPITools#21779)

* add maven release workflow

* minor updates

Author: wing328

.github/workflows/maven-release.yml

@@ -0,0 +1,61 @@
+name: Release to Maven Central (snapshot, stable)
+
+on:
+  push:
+    branches:
+      - master
+jobs:
+  build:
+    name: Build
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+      - name: Set up JDK 11
+        uses: actions/setup-java@v3
+        with:
+          java-version: 11
+          distribution: 'zulu'
+      - name: Cache Maven packages
+        uses: actions/cache@v3
+        with:
+          path: ~/.m2
+          key: ${{ runner.os }}-m2-${{ hashFiles('**/pom.xml') }}
+          restore-keys: ${{ runner.os }}-m2
+      - name: Build
+        run: ./mvnw clean install -DskipTests=true
+        #run: ./mvnw clean install
+
+  publish:
+    runs-on: ubuntu-latest
+    name: Publish to Maven Central
+    needs: build
+    permissions:
+      contents: read
+      packages: write
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+ 
+      - id: install-secret-key
+        name: Install gpg secret key
+        run: |
+          cat <(echo -e "${{ secrets.GPG_PRIVATE_KEY }}") | gpg --batch --import
+          gpg --list-secret-keys --keyid-format LONG
+
+      - name: Set up Maven Central Repository
+        uses: actions/setup-java@v3
+        with:
+          java-version: 11
+          distribution: 'zulu'
+          server-id: central
+          server-username: MAVEN_USERNAME
+          server-password: MAVEN_PASSWORD
+
+      - name: Publish package
+        run: ./mvnw -DskipTests=true --batch-mode -P release -Dgpg.passphrase=${{ secrets.GPG_PASSPHRASE }} deploy
+        env:
+          MAVEN_USERNAME: ${{ secrets.OSS_USERNAME }}
+          MAVEN_PASSWORD: ${{ secrets.OSS_PASSWORD }}

pom.xml

@@ -60,16 +60,6 @@
         <system>github</system>
         <url>https://github.com/openapitools/openapi-generator/issues</url>
     </issueManagement>
-    <distributionManagement>
-        <snapshotRepository>
-            <id>ossrh</id>
-            <url>https://oss.sonatype.org/content/repositories/snapshots</url>
-        </snapshotRepository>
-        <repository>
-            <id>ossrh</id>
-            <url>https://oss.sonatype.org/service/local/staging/deploy/maven2/</url>
-        </repository>
-    </distributionManagement>
     <licenses>
         <license>
             <name>Apache License 2.0</name>
@@ -436,12 +426,33 @@
     <profiles>
         <profile>
             <id>release</id>
+            <distributionManagement>
+                <repository>
+                    <id>central</id>
+                    <name>Central Repository OSSRH</name>
+                    <url>https://central.sonatype.com/</url>
+                </repository>
+                <snapshotRepository>
+                    <id>central</id>
+                    <name>Central Repository OSSRG Snapshots</name>
+                    <url>https://central.sonatype.com/repository/maven-snapshots/</url>
+                    <snapshots>
+                        <enabled>true</enabled>
+                    </snapshots>
+                </snapshotRepository>
+            </distributionManagement>
             <build>
                 <plugins>
                     <plugin>
                         <groupId>org.apache.maven.plugins</groupId>
                         <artifactId>maven-gpg-plugin</artifactId>
                         <version>1.6</version>
+                        <configuration>
+                            <gpgArguments>
+                                <arg>--pinentry-mode</arg>
+                                <arg>loopback</arg>
+                            </gpgArguments>
+                        </configuration>
                         <executions>
                             <execution>
                                 <id>sign-artifacts</id>
@@ -453,14 +464,14 @@
                         </executions>
                     </plugin>
                     <plugin>
-                        <groupId>org.sonatype.plugins</groupId>
-                        <artifactId>nexus-staging-maven-plugin</artifactId>
-                        <version>1.6.8</version>
+                        <groupId>org.sonatype.central</groupId>
+                        <artifactId>central-publishing-maven-plugin</artifactId>
+                        <version>0.8.0</version>
                         <extensions>true</extensions>
                         <configuration>
-                            <serverId>ossrh</serverId>
-                            <nexusUrl>https://oss.sonatype.org/</nexusUrl>
-                            <autoReleaseAfterClose>true</autoReleaseAfterClose>
+                            <publishingServerId>central</publishingServerId>
+                            <autoPublish>true</autoPublish>
+                            <checksums>required</checksums>
                         </configuration>
                     </plugin>
                 </plugins>