How to create Array for branches in Jenkins Groovy - jenkins

Question

How to create an Array after git branch -r.
my goal is I want to delete/clean up all branches, which are older than 2 months.
so my Jenkisn Script looks like this:
pipeline {
agent { label "base" }
stages {
stage('Get All Branches') {
steps{
withCredentials([usernamePassword(credentialsId: "${config.git.credentialsId}", usernameVariable: 'GITUSER', passwordVariable: 'GITPASSWD')]) {
// test -d "./.git" && git fetch || git clone -n http://$GITUSER:$GITPASSWD#${srcurl} .
sh """
test -d "./.git" && git fetch || git clone -n gitRepo .
git branch -r --sort=-committerdate > .git/branchesList
"""
}
}
}
stage('show branches'){
steps{
branchesList = readFile(".git/branchesList").trim()
echo branchesList // this line I want to get all branches
// the Question is How to create an Array from branchesList
}
}
}
}
Any solutions?

Answer 1

You can readfile in Jenkins using : readFile(file: '<Filepath>').
stage('show branches'){
steps{
// Define Array containing branches
def BRANCHES = []
// Give your path of file. Please change the path according to your requirements
def branchesList = readFile(file: 'C:\\Data\\.git\\branchesList.txt')
// I assumed your file contains one branch per line, that is why i split with "\n".
// You can change this line as per your condition
BRANCHES = branchesList.split("\n")
for (branch in BRANCHES){
println ("Branch is : ${branch}")
}
}