How do I dynamically trigger downstream builds in jenkins?

Question

We want to dynamically trigger integration tests in different downstream builds in jenkins. We have a parametrized integration test project that takes a test name as a param

Answer 1

This worked for me using "Execute system groovy script"

import hudson.model.*

def currentBuild = Thread.currentThread().executable

def job = hudson.model.Hudson.instance.getJob("jobname")
def params = new StringParameterValue('paramname', "somestring")  
def paramsAction = new ParametersAction(params) 
def cause = new hudson.model.Cause.UpstreamCause(currentBuild)
def causeAction = new hudson.model.CauseAction(cause) 
hudson.model.Hudson.instance.queue.schedule(job, 0, causeAction, paramsAction)