Workflow8

def pom = readFile 'pom.xml'
def project = new XmlSlurper().parseText(pom)
String version = project.version.toString()
String tarName = "volcano-${version}-release-pack.tar.gz"

stage('Release'){

@NonCPS
def newVersion = {
   def doesFileExist = fileExists 'releases.txt'
   if (doesFileExist) {
       echo "file releases.txt exists"
       def file = readFile 'releases.txt'
       String fileContents = file.toString()
       Integer newTarVersion = fileContents.toInteger() + 1
       writeFile file: 'releases.txt', text: newTarVersion.toString()
       echo "new tar version is: " + newTarVersion
   } else {
       echo "file releases.txt does not exist"
       writeFile file: 'releases.txt', text: "1"
   }
   readFile 'releases.txt'
}

if (branch.startsWith("release") || branch.startsWith("hotfix")) {
   String tarRCVersion = newVersion()
   newTarName = "volcano${version}-RC-${tarRCVersion}-release-pack.tar.gz"
   sh "mv ./volcano/target/${tarName} ./viper/target/${newTarName}"
   tarName = newTarName
}

step('Commit and push releases file') {
   sh "git remote set-url origin git@bitbucket.org:fullgc/volcano.git"
   sh "git add -A"
   sh "git commit -m 'update volcano version to '${tarRCVersion}"
   sh "git push"
}