feat: Migrate to Central Publisher Portal

Updates the release process to use the new Central Publisher Portal for deploying artifacts to Maven Central.

- Replaces the nexus-staging-maven-plugin with the central-publishing-maven-plugin.
- Updates the distributionManagement repository URL in pom.xml.
- Modifies the publish script to use the central-publishing:publish goal.
- Updates the release workflow to use token-based authentication secrets (CENTRAL_USERNAME, CENTRAL_TOKEN).
- Adjusts settings.xml to use the new authentication tokens.

Author: lahirumaramba

.github/resources/settings.xml

@@ -7,9 +7,9 @@
 
   <servers>
     <server>
-      <id>ossrh</id>
-      <username>${env.NEXUS_OSSRH_USERNAME}</username>
-      <password>${env.NEXUS_OSSRH_PASSWORD}</password>
+      <id>central</id>
+      <username>${env.CENTRAL_USERNAME}</username>
+      <password>${env.CENTRAL_TOKEN}</password>
     </server>
   </servers>
 

.github/scripts/publish_artifacts.sh

@@ -26,7 +26,7 @@ gpg --import --no-tty --batch --yes firebase.asc
 #  1. Compiles the source (compile phase)
 #  2. Packages the artifacts - src, bin, javadocs (package phase)
 #  3. Signs the artifacts (verify phase)
-#  4. Publishes artifacts via Nexus (deploy phase)
+#  4. Publishes artifacts via Central Publisher Portal (deploy phase)
 mvn -B clean deploy \
   -Dcheckstyle.skip \
   -DskipTests \

.github/workflows/release.yml

@@ -100,8 +100,8 @@ jobs:
       env:
         GPG_PASSPHRASE: ${{ secrets.GPG_PASSPHRASE }}
         GPG_PRIVATE_KEY: ${{ secrets.GPG_PRIVATE_KEY }}
-        NEXUS_OSSRH_USERNAME: ${{ secrets.NEXUS_OSSRH_USERNAME }}
-        NEXUS_OSSRH_PASSWORD: ${{ secrets.NEXUS_OSSRH_PASSWORD }}
+        CENTRAL_USERNAME: ${{ secrets.CENTRAL_USERNAME }}
+        CENTRAL_TOKEN: ${{ secrets.CENTRAL_TOKEN }}
 
     # See: https://cli.github.com/manual/gh_release_create
     - name: Create release tag

pom.xml

@@ -71,9 +71,13 @@
 
     <distributionManagement>
         <snapshotRepository>
-            <id>ossrh</id>
-            <url>https://oss.sonatype.org/content/repositories/snapshots</url>
+            <id>central</id>
+            <url>https://s01.oss.sonatype.org/content/repositories/snapshots</url>
         </snapshotRepository>
+        <repository>
+            <id>central</id>
+            <url>https://s01.oss.sonatype.org/service/local/staging/deploy/maven2/</url>
+        </repository>
     </distributionManagement>
 
     <profiles>
@@ -351,13 +355,13 @@
             <!-- Deploy Phase -->
             <plugin>
                 <groupId>org.sonatype.plugins</groupId>
-                <artifactId>nexus-staging-maven-plugin</artifactId>
-                <version>1.7.0</version>
+                <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>
+                    <tokenAuth>true</tokenAuth>
+                    <autoPublish>true</autoPublish>
                 </configuration>
             </plugin>
         </plugins>