import hudson.model.Node
import hudson.model.Slave
import jenkins.model.Jenkins
import hudson.FilePath;

pipeline {
	triggers {
		cron('H 1 * * *')
	}
	agent {
		node {
		    label 'master'
		}
	}
	stages {
	   stage ('Wipe Out Slave Workspaces') {
	       steps {
        	   script {
					Jenkins jenkins = Jenkins.instance
					def jenkinsNodes = jenkins.nodes

					for (Node node in jenkinsNodes) 
					{
						if (!node.getComputer().isOffline()) 
						{           
							if(node.getComputer().countBusy()==0)
							{
								FilePath fp = node.getRootPath().child("workspace");
								println("Processing: " + node.getDisplayName())
								println ("Wiping out: " + fp)
								println("------------------")
								fp.deleteRecursive(); 
							}
						}
					}            		
				}
	       }
	   }
	}
}