Read files from workspace in multibranch pipeline scm?

[anton kropp]

I'm having some issues reading files from the local workspace. As part of my build a set of artifact files are created and I'd like to iterate over them, parse their json contents, and act on it in a pipeline step. However, I can't seem to get reading files from the workspace to work.

My stage looks like:

stage('Push docker containers') {
def slurper = new JsonSlurper()

def files = new File(env.WORKSPACE).listFiles()

for (int i = 0; i < files.size(); i++) {
def file = files[i]
println(file.name)
if (file.name.endsWith(".json")) {
def json = slurper.parse(file)

json.each { key, value ->
// do stuff
}
}
}
}

I keep getting a null pointer on files.size. I've tried to ls the workspace to see whats in it, but nothing shows up.   Whats the recommended approach here?

Thanks

-Anton

[Michael Kobit]

Your problem is the new File( piece. The pipeline code runs on a flyweight executor on the master, and the various steps can run on allocated nodes. You might be able to do something using FilePath, but I think you could use the findFiles step which would get you some information. You could then use the readFile step to get the file contents into your pipeline execution.

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[anton kropp]

I see. I was able to do it with the find files step after installing that plugin. Thanks