Groovy script to skip build if other job is failed

isjobfailed

/**
 Checks the last build status of a sentinel job and if worse than expected,
 aborts the job running this script.
 
 Example usage. Use this script in a pre-scm build step (using pre-scm plugin) for
 qa.eupathdb.org . Configure the qa.eupathdb.org job to use the integrate.eupathdb.org
 job as a sentinel_job. If the last build of integrate.eupathdb.org is worse than 
 expected when a qa.eupathdb.org build is started then abort the qa.eupathdb.org
 build so it doesn't pick up the bad code that failed the sentinel job.
 
 Requires a variable binding for sentinel_job in the pluging
 configuration for Groovy script file. e.g.
  sentinel_job=integrate.somedb.org
**/

import hudson.model.*

def expected = Result.UNSTABLE

def thisThread = Thread.currentThread()
def thisBuild = thisThread.executable

try {
  sentinel_job
} catch (MissingPropertyException e) {
    println("\n\n")
    println("Binding variable 'sentinel_job' is missing.")
    println("Add this in the job's configuration for Groovy script file (under Advanced). e.g.")
    println("sentinel_job=integrate.job.org")
    println("\n\n")
    thisThread.interrupt()
    return
}

def sentinelJobName = sentinel_job
def sentinelJob = hudson.model.Hudson.instance.getJob(sentinelJobName)
def sentinelResult = sentinelJob.getLastBuild().result

println("\n")

if (sentinelResult.isWorseThan(expected)) {
  println("Last build of sentinel job " + sentinelJobName + " was " + sentinelResult + ". Aborting this build.\n")
  thisThread.interrupt()
  return
}

println("Last build of " + sentinelJobName + " was " + sentinelResult + ". Continuing with this build.\n")

return true