Openshift retrieve branch name in jenkinsfile - openshift

Question

I have configured webhook on bitbucket server which points to Openshift.
I want to get GIT repo url , git branch etc from webhook payload in my inline jenkinsfile but I dont know how to retrieve them. (Webhook triggers build though).
Is it possible ?
Here is my BuildConfig
apiVersion: build.openshift.io/v1
kind: BuildConfig
metadata:
labels:
application: spring-demo
template: openjdk18-web-basic-s2i
name: spring-demo
spec:
output:
to:
kind: ImageStreamTag
name: 'spring--demo:latest'
runPolicy: Serial
source:
type: None
strategy:
jenkinsPipelineStrategy:
jenkinsfile: |-
pipeline {
agent {
label 'maven'
}
stages {
stage('Build') {
steps{
sh "echo ${env.BRANCH_NAME}" <<<<------------- this is null
}
}
}
}
type: JenkinsPipeline
triggers:
- bitbucket:
secretReference:
name: yoyo
type: Bitbucket
--Thanks.

Answer 1

According to this stack overflow question and some Jenkins documentation, you need to install the git plugin on your Jenkins instance. Then you will have the variable GIT_BRANCH and GIT_URL available to you via ${env.GIT_BRANCH} and ${env.GIT_URL}. Make sure your branch names do not have slashes in them, (ex release/1.2.3) as this confuses a lot of key tools in Jenkins.
Alternatively as a last resort, in a Jenkins scripted pipeline you can set your own environment variables via parameter or defaults (like "master") if you know you won't change your branches often.