How to define and use function inside Jenkins Pipeline config?

Question

I'm trying to create a task with a function inside:

def doCopyMibArtefactsHere(projectName) {     step ([         $class: 'CopyArtifact',         projectName: $projectName,         filter: '**/**.mib',         fingerprintArtifacts: true,          flatten: true     ]); }  def BuildAndCopyMibsHere(projectName, params) {     build job: $project, parameters: $params     doCopyMibArtefactsHere($projectName) }   node {      stage('Prepare Mib'){         BuildAndCopyMibsHere('project1')     } } 

But this gives me an exception:

java.lang.NoSuchMethodError: No such DSL method 'BuildAndCopyMibsHere' found among steps*

Is there any way to use embedded functions within a Pipeline script?

Answer 1

First off, you shouldn't add $ when you're outside of strings ($class in your first function being an exception), so it should be:

def doCopyMibArtefactsHere(projectName) {     step ([         $class: 'CopyArtifact',         projectName: projectName,         filter: '**/**.mib',         fingerprintArtifacts: true,          flatten: true     ]); }  def BuildAndCopyMibsHere(projectName, params) {     build job: project, parameters: params     doCopyMibArtefactsHere(projectName) } ... 

Now, as for your problem; the second function takes two arguments while you're only supplying one argument at the call. Either you have to supply two arguments at the call:

... node {      stage('Prepare Mib'){         BuildAndCopyMibsHere('project1', null)     } } 

... or you need to add a default value to the functions' second argument:

def BuildAndCopyMibsHere(projectName, params = null) {     build job: project, parameters: params     doCopyMibArtefactsHere($projectName) }