How to pass dynamic params to jenkins resource method in python? - jenkins

Question

I am trying to extend Jenkins shared library with some python functions which I have in my resources directory. I can call the function in my jenkins pipeline but I am struggling to pass params.
In my jenkinsfile I tried the following
script{
getLabelsPerPullRequest.runMyPython(git_url="${env.GIT_URL}", github_token="${env.GITHUB_CREDENTIALS_ID}", prNbr_name="${BRANCH_NAME}")
}
where getLabelsPerPullRequest.runMyPython in vars folder looks like this:
def runMyPython(String git_url, String github_token, String prNbr_name) {
final pythonContent = libraryResource('com/sophia/sharedlib/getLabelsPerPullRequest.py')
sh('echo ${git_url} ${github_token} ${prNbr_name}')
writeFile(file: 'getLabelsPerPullRequest.py', text: pythonContent)
sh('chmod +x getLabelsPerPullRequest.py && ./getLabelsPerPullRequest.py -u ${git_url} -t ${github_token} -p ${prNbr_name}')
}
echo not returning anything. How can I pass the params from pipeline to the function?
The goal is to be able to use the passed params to substitute the flags in the last sh command. I can run a python script with no params using the same method, but these can only do so much.

Answer 1

You shared library function runMyPython is fine, just use double quotes "" instead of single quotes '' to enable the string interpolation and the substitution of variables:
("echo ${git_url} ${github_token} ${prNbr_name}")
Another thing is that as far is i know groovy does not support named arguments like you used it, it supports named arguments as map, so you will need to update you call to the shared library method to:
getLabelsPerPullRequest.runMyPython(env.GIT_URL, env.GITHUB_CREDENTIALS_ID, BRANCH_NAME)
or alternatively change your runMyPython function to receive a map, and then use the param:value notation to call it.