Conditional environment variables in Jenkinsfile - github

Question

My Jenkinsfiles use the environment{} directive. I've been trying to set a condition where I invoke different variables depending on the GIT branch being builded.
I've tried something like e. g. :
switch(branch_name) {
case 'dev' :
Var1 = x;
case 'master' :
Var1 = y;
}
That would allow me skip using different Jenkinsfiles for each branch on a repo. But groovy syntax seems not to work inside this environment{} directive.
Is there a way tackling it? Or would you suggest another approach for handling different global variables for each branch?

Answer 1

You can use when declarative in your declarative pipeline. More info here
pipeline {
agent any
stages {
stage('Example Build') {
steps {
echo 'Hello World'
}
}
stage('Deploy to PROD') {
when {
branch 'production'
environment name: 'DEPLOY_TO', value: 'production'
}
steps {
echo 'Deploying'
}
}
stage('Deploy to DEV') {
when {
branch 'dev'
environment name: 'DEPLOY_TO', value: 'dev'
}
steps {
echo 'Deploying'
}
}
}
}