groovy scripts for Jenkins

At some point, if you are working on managing Jenkins for your team, you will find yourself looking for a set of useful groovy scripts to control jenkins configuration for a large no of builds/jobs.

Following are some mostly frequently needed ones

Get all jobs that belong to a view 

 
hudson.model.Hudson.instance.getView('my-view')?.items.each() { 
    println it.fullDisplayName 
} 

Clear the build queue  

import hudson.model.*
def queue = Hudson.instance.queue
println "Queue contains ${queue.items.length} items"
queue.clear()
println "Queue cleared"

Disable jobs in a view 

hudson.model.Hudson.instance.getView('1.1.x-tests')?.items.each() { 
   println("JOB : "+it.name)
   it.disabled=true
   it.save()
} 

Get all jobs that that define a TimerTrigger with the trigger spec 

 
import hudson.model.* 
import hudson.triggers.*
  
for(item in Hudson.instance.items) {
  
  for(trigger in item.triggers.values()) { 
    
    if(trigger instanceof TimerTrigger) {    
       println("--- Timer trigger for " + item.name + " ---")    
        println(trigger.spec + '\n')   
    }  
  } 
}

Disconnect and re-connect to slaves

import hudson.model.* 

Hudson.instance.computers.each { c ->
  c.disconnect()
  c.connect(true)
}