groovy - Get Jenkins upstream jobs

Question

I would like to get all the upstream jobs, just like in the console output:

Started by upstream project "allocate" build number 31
originally caused by: 
Started by upstream project "start" build number 12
originally caused by: 

I've tried groovy postbuild with the following:

def build = Thread.currentThread().executable
def causes= manager.build.getCauses()
for (cause in causes)
{
manager.listener.logger.println "upstream build: " + cause.getShortDescription()

}

but then I only get "allocate", not the "start" job.

I've also tried

def build = Thread.currentThread().executable
def test = build.getUpstreamBuilds()
for (up in test)
{
manager.listener.logger.println "test build project: " + up
}

but this is empty...

Any ideas?

Answer 1

You were close with your first solution.

Actually, what you need to do is iterate over the ancestor of this Cause depending on it's type.

Here is a sample snippet of code that could get you started :

def printCausesRecursively(cause) {
     if (cause.class.toString().contains("UpstreamCause")) {
         println "This job was caused by " + cause.toString()
         for (upCause in cause.upstreamCauses) {
             printCausesRecursively(upCause)
         }
     } else {
         println "Root cause : " + cause.toString()
     }
}

for (cause in manager.build.causes)
{
    printCausesRecursively(cause)
}

You may want to refer to the documentation to handle all Cause types : http://javadoc.jenkins-ci.org/hudson/model/Cause.html

Hope it helps,

Best