How to list the sub directory and the result load as an array component from groovy Jenkins script

Question

def clusterComponent = "components/"

//from below listed the sub folder in components/ directory
         stage('list components') {
            sh("ls -A1 ${clusterComponent}")
        }

I want to load the list result to clustercomponent as an array. example output should be clusterComponent = ["item1", "item2", "item3", "item4"]

maybe this is not the proper way. Still a beginner at groovy scripting.

Answer 1

If you want to save the output of the sh step to a variable, you need to use returnStdout: true. Then you want to have each line of the output as a separate entry in the array/list, so you need to .split('\n') - split the string by the newline character.

The script can be:

def clusterComponent = "components/"

//from below listed the sub folder in components/ directory
stage('list components') {
    List<String> files = sh(script: "ls -A1 ${clusterComponent}", returnStdout: true).trim().split('\n')
}

You can also avoid the sh step to do this task and use the findFiles step from pipeline-utility-steps. This returns a FileWrapper class instance, so if you need the file name only, you can use:

def clusterComponent = "components/"

//from below listed the sub folder in components/ directory
stage('list components') {
    List<String> files = findFiles(glob: "${clusterComponent}/*").collect { file -> file.name }
}