changelog.gradle

allprojects {

    def env = System.getenv()
    def jenkinsUrl = env.JENKINS_URL
    def jenkinsJob = env.JOB_NAME
    def buildNumber = env.BUILD_NUMBER

    if (jenkinsUrl != null && jenkinsJob != null && buildNumber != null) {

        def changelog = ""

        def data = new URL("$jenkinsUrl/job/$jenkinsJob/$buildNumber/api/xml?depth=20").text
        def xml = new XmlSlurper().parseText(data)

        xml.changeSet.item.each { change ->
            changelog += "$change.author.fullName: $change.msg" + '\n'
        }

        project.ext.changelog = changelog
    }
}