Can I check if Environment variable exist or not in Jenkinsfile
You may check it before use it:
if (env.CHANGE_ID) { ...From the doc
Environment variables accessible from Scripted Pipeline, for example:
env.PATHorenv.BUILD_ID. Consult the built-in Global Variable Reference for a complete, and up to date, list of environment variables available in Pipeline.
This is how it would look like for a declarative pipeline:
pipeline { // ... stages { // ... stage('Build') { when { allOf { expression { env.CHANGE_ID != null } expression { env.CHANGE_TARGET != null } } } steps { echo "Building PR #${env.CHANGE_ID}" } } }}To run a stage only when not building a PR:
when { expression { env.CHANGE_ID == null } }
You can also use the changeRequest() function in the when clause to check for PR:
when { anyOf { changeRequest() // if pull request branch 'master' branch 'release/*' }}