How to process a github webhook payload in Jenkins?

Question

I\'m currently triggering my Jenkins builds through a GitHub webhook. How would I parse the JSON payload? If I try to parameterize my build and use the $payload variable, th

Answer 1

There is a Generic Webhook Trigger plugin that can contribute values from the post content to the build.

If the post content is:

{
   "app":{
      "name":"GitHub API",
      "url":"http://developer.github.com/v3/oauth/#oauth-authorizations-api"
   }
}

You can configure it like this:

And when triggering with some post content:

curl -v -H "Content-Type: application/json" -X POST -d '{ "app":{ "name":"GitHub API", "url":"http://developer.github.com/v3/oauth/" }}' http://localhost:8080/jenkins/generic-webhook-trigger/invoke?token=sometoken

It will resolv variables and make them available in the build job.

{  
   "status":"ok",
   "data":{  
      "triggerResults":{  
         "free":{  
            "id":2,
            "regexpFilterExpression":"",
            "regexpFilterText":"",
            "resolvedVariables":{  
               "app_name":"GitHub API",
               "everything_app_url":"http://developer.github.com/v3/oauth/",
               "everything":"{\"app\":{\"name\":\"GitHub API\",\"url\":\"http://developer.github.com/v3/oauth/\"}}",
               "everything_app_name":"GitHub API"
            },
            "searchName":"",
            "searchUrl":"",
            "triggered":true,
            "url":"queue/item/2/"
         }
      }
   }
}