Why an each loop in a Jenkinsfile stops at first iteration

Question

Here is the content of my Jenkinsfile :

node {
    // prints only the first element \'a\'
    [ \'a\', \'b\', \'c\' ].each {
        echo it
    }
}         


        

Answer 1

A workaround for this issue is to expand all the commands to a flat text file as a groovy script. Then use load step to load the file and execute.

For example:

@NonCPS
def createScript(){
    def cmd=""
    for (i in [ 'a', 'b', 'c' ]) {
        cmd = cmd+ "echo $i"
    }
    writeFile file: 'steps.groovy', text: cmd
}

Then call the function like

createScript()
load 'steps.groovy'