Close and release artifact on maven central using gradle - gradle

Question

I have this gradle script:
def configureUploadArtifacts(groupId, repoUrl, _packaging) {
def gpgKeyId = System.getenv('GPG_KEY_ID')
def gpgPassword = System.getenv('GPG_KEY_PASSWORD')
def gpgFile = System.getenv('PATH_TO_GPG_FILE')
project.group = groupId;
project.archivesBaseName = name
project.version = getVersionNameFromFile()
ext."signing.keyId" = gpgKeyId
ext."signing.password" = gpgPassword
ext."signing.secretKeyRingFile" = gpgFile
uploadArchives {
apply plugin: 'maven'
apply plugin: 'signing'
signing {
sign configurations.archives
}
def userName = System.getenv('OSSRH_USER_NAME');
def password = System.getenv('OSSRH_PASSWORD');
repositories {
mavenDeployer {
beforeDeployment { MavenDeployment deployment -> signing.signPom(deployment) }
repository(url: "https://oss.sonatype.org/service/local/staging/deploy/maven2/") {
authentication(userName: userName, password: password)
}
snapshotRepository(url: "https://oss.sonatype.org/content/repositories/snapshots/") {
authentication(userName: userName, password: password)
}
pom.project {
name "${project.name}"
packaging "${_packaging}"
// optionally artifactId can be defined here
description 'A collection of core tools I use'
url "http://github.com/${repoUrl}"
scm {
connection "scm:git:git://github.com/${repoUrl}.git"
developerConnection "scm:git:ssh://github.com/${repoUrl}.git"
url "http://github.com/${repoUrl}/tree/master"
}
licenses {
license {
name 'The Apache License, Version 2.0'
url 'http://www.apache.org/licenses/LICENSE-2.0.txt'
}
}
developers {
developer {
id 'TacB0sS'
name 'My Name'
email 'My Email'
}
}
}
}
}
}
}
I use it on my Jenkins server and it works wonderfully.
I would like it also to close and release the artifacts...
How do I do that?

Answer 1

Solution was to add the following to the root build.gradle file:
ext."oss-releases.username" = System.getenv('OSSRH_USER_NAME')
ext."oss-releases.password" = System.getenv('OSSRH_PASSWORD')
ext."oss-releases.url" = "https://oss.sonatype.org/index.html#stagingRepositories"
apply plugin: 'nexus-workflow'
And run the following from the command line:
bash gradlew nexusStagingRelease
DONE!

Answer 2

You can use gradle-release on your script. It works similar as maven-release-plugin (removes SNAPSHOT from version, builds, create tags, deploys artifacts and updates to the next development version):
apply plugin: 'net.researchgate.release'
In Jenkins, using release plugin, you will need to configure the unattended release:
gradle release -Prelease.useAutomaticVersion=true \
-Prelease.releaseVersion=$VERSION \
-Prelease.newVersion=$NEXT_VERSION