How to read GitHub payload in groovy Jenkinsfile? - jenkins

Question

I have a web hook configured in my GitHub org that triggers a Jenkins pipeline every time a new repo is created. What I am trying to do is get some of the values from the payload which triggers the job and use them in a script within the pipeline.
One such example would be the repo name, for instance the payload looks something like this:
{
"action": "created",
"repository": {
"name": "my-new-repo"
[...]
}
[...]
}
I tried assigning the repository["name"] value to a variable in the Jenkinsfile but that did not seem to work:
pipeline{
environment {
REPO_NAME = $.repository.name
}
[...]
}
Also tried it with quotes and some other ways in formatting but still could not get it to be assigned to the REPO_NAME variable.

Answer 1

Here is an example of how to Read different attributes from the Webhook request.
pipeline {
agent any
triggers {
GenericTrigger(
genericVariables: [
[key: 'REPO_NAME', value: '$.repository.name', defaultValue: 'null'],
[key: 'PR_TYPE', value: '$.pullrequest.type', defaultValue: 'null']
],
causeString: 'Triggered By Github',
token: '12345678',
tokenCredentialId: '',
printContributedVariables: true,
printPostContent: true,
silentResponse: false
)
}
stages {
stage('ProcessWebHook') {
steps {
script {
echo "Received a Webhook Request from Guthub."
echo "RepoName: $REPO_NAME"
}
}
}
}
}