Add Gradle task to complete MavenCentral deployment automatically

Author: tsjensen

build.gradle

@@ -18,7 +18,6 @@ repositories {
     mavenCentral()
 }
 
-
 import org.gradle.internal.jvm.Jvm
 
 /*
@@ -44,6 +43,7 @@ ext {
     publishedName = 'standard-bom'
     website = 'https://sbom.siemens.io/'
     codeRepo = 'https://github.com/siemens/standard-bom-java'
+    mavenCentralNamespace = 'com.siemens.sbom'
 
     // The version of the spec we are currently implementing.
     // Must correspond to an existing tag, without the leading 'v', or validation may fail later!
@@ -331,3 +331,42 @@ if (!Boolean.parseBoolean(System.getenv('CI')) || project.hasProperty('signingKe
         sign publishing.publications.mavenJava
     }
 }
+
+tasks.register('completeMavenCentralDeployment') {
+    group = PublishingPlugin.PUBLISH_TASK_GROUP
+    description = 'Completes the MavenCentral deployment after running normal publishing'
+
+    String bearerToken = 'NOT_SET'
+    if (project.hasProperty('SB_SONATYPE_USER') && project.hasProperty('SB_SONATYPE_PASSWORD')) {
+        bearerToken = project.getProperty('SB_SONATYPE_USER') + ':' + project.getProperty('SB_SONATYPE_PASSWORD')
+        bearerToken = Base64.encoder.encodeToString(bearerToken.getBytes('UTF-8'))
+    } else {
+        throw new GradleException('Sonatype credentials not set, missing SB_SONATYPE_USER and/or SB_SONATYPE_PASSWORD')
+    }
+
+    doLast {
+        def connection = new URL('https://ossrh-staging-api.central.sonatype.com/manual/upload/defaultRepository/'
+            + project.ext.mavenCentralNamespace + '?publishing_type=automatic').openConnection() as HttpURLConnection
+        try {
+            connection.with {
+                requestMethod = 'POST'
+                doOutput = false
+                setRequestProperty('Authorization', "Bearer ${bearerToken}")
+
+                int responseCode = getResponseCode()
+                if (responseCode == 200) {
+                    logger.lifecycle('MavenCentral deployment completed. '
+                        + 'Details at https://central.sonatype.com/publishing/deployments')
+                } else {
+                    throw new GradleException("Request failed with status ${responseCode}")
+                }
+            }
+        } finally {
+            connection.disconnect()
+        }
+    }
+}
+
+tasks.named('publishAllPublicationsToMavenCentralStagingRepository').configure {
+    it.finalizedBy(tasks.named('completeMavenCentralDeployment'))
+}