Workspaces cleanup Jenkinsfile

Jenkinsfile.cleanup

import hudson.model.*;
import hudson.util.*;
import jenkins.model.*;
import hudson.FilePath.FileCallable;
import hudson.slaves.OfflineCause;
import hudson.node_monitors.*;


node('master'){
    stage('Cleanup nodes'){
        clean()
    }
}

@NonCPS
def cleanup(node){
    computer = node.toComputer()
    if (computer.getChannel() == null) return

    rootPath = node.getRootPath()
    size = DiskSpaceMonitor.DESCRIPTOR.get(computer).size
    roundedSize = size / (1024 * 1024 * 1024) as int

    println("node: " + node.getDisplayName() + ", free space: " + roundedSize + "GB")
    if (roundedSize < 10) {
        def wasOffline = computer.isOffline()
        computer.setTemporarilyOffline(true, new hudson.slaves.OfflineCause.ByCLI("disk cleanup"))
        for (item in Jenkins.instance.getAllItems(Job.class)) {
                      jobName = item.getFullDisplayName()
          try{


            if (item.isBuilding()) {
                println(".. job " + jobName + " is currently running, skipped")
                continue
            }

            println(".. wiping out workspaces of job " + jobName)

            workspacePath = node.getWorkspaceFor(item)
            if (workspacePath == null) {
                println(".... could not get workspace path")
                continue
            }

            println(".... workspace = " + workspacePath)

            customWorkspace = item.getCustomWorkspace()
            if (customWorkspace != null) {
                workspacePath = node.getRootPath().child(customWorkspace)
                println(".... custom workspace = " + workspacePath)
            }

            pathAsString = workspacePath.getRemote()
            if (workspacePath.exists()) {
                workspacePath.deleteRecursive()
                println(".... deleted from location " + pathAsString)
            } else {
                println(".... nothing to delete at " + pathAsString)
            }
          }catch(e){
            println("Unable to clean up job ${jobName}")
            e.printStackTrace()
          }
        }
        computer.setTemporarilyOffline(wasOffline, null) //respect offline status
    }
}

@NonCPS
def clean(){
    cleanup(Jenkins.getInstance())
    
    for (node in Jenkins.instance.nodes) {
      cleanup(node)
    }
}