The JSON response is not shown in Jenkins log, even if it is configured to be shown

[GitHubaajat]

Problem

• Jenkins has a job, which was created with earlier version of the plugin. Before plugin updates, that job printed the json post parameters and other stuff correctly to the Jenkins job log.
• After updating to the 1.88.2, no output is seen from Jenkins job log.
• No changes are made to Jenkins job or plugin configuration
• Job still works as before. Parameters are extracted correctly. Just the output of the incoming parameters is missing.

Configuration info

• Plugin version used: 1.88.2
• Jenkins version used: Version 2.426.3
• Your configuration: Both "Print post content" and "Print post content in job log" are checked in Jenkins job.
• Build job log: No output of the plugin's Json response or other things

[tomasbjerre]

Can you provide the output of this script (you can run it from Jenkins > Manage Jenkins > Script Console):

println("Jenkins: ${Jenkins.instance.getVersion()}")
println("OS: ${System.getProperty('os.name')} - ${System.getProperty('os.version')}")
println("Java: ${System.getProperty('java.version')} - ${System.getProperty('java.vm.vendor')} (${System.getProperty('java.vm.name')})")
println "---"

Jenkins.instance.pluginManager.plugins
  .collect()
  .sort { it.getShortName() }
  .each {
    plugin -> println("${plugin.getShortName()}:${plugin.getVersion()}")
  }
return

• How do you invoke the plugin? Provide curl command from issue template.

[GitHubaajat]

Plugin is invoked from:

• Jenkins job's "Build Trigger" configuration for the Generic Webhook Trigger. Payload is received correctly from Bitbucket/Stash, since the job itself works as before.

These configurations no longer works as expected:

• Print post content (checked)
• Print contributed variables (checked)

Before the plugin update, the JSON payload was printed to the Jenkins job's build log. That no longer happens.

Environment: Jenkins: 2.426.3 OS: Linux - 4.14.219-161.340.amzn2.x86_64 Java: 11.0.11 - AdoptOpenJDK (OpenJDK 64-Bit Server VM)

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[tomasbjerre]

I started a Jenkins instance from this repository, with this script: https://github.com/jenkinsci/generic-webhook-trigger-plugin/blob/master/run.sh

Installed the pipeline plugin.

Created a pipeline like:

properties([
    pipelineTriggers([
        GenericTrigger(
            causeString: 'Generic Cause',
            genericVariables: [
                [defaultValue: '', key: 'name', regexpFilter: '', value: '$.app.name']
            ],
            printContributedVariables: true,
            printPostContent: true, 
            regexpFilterExpression: '', 
            regexpFilterText: '', 
            token: 'mypipeline', 
            tokenCredentialId: ''
        )
    ])
])

node {
    sh """
    name is '$name'
    """
}

Triggered that pipeline with:

curl -v -H "Content-Type: application/json" -X POST -d '{ "app":{ "name":"some value" }}' "http://localhost:8080/jenkins/generic-webhook-trigger/invoke?token=mypipeline"

Got response:

Note: Unnecessary use of -X or --request, POST is already inferred.
*   Trying 127.0.0.1:8080...
* Connected to localhost (127.0.0.1) port 8080 (#0)
> POST /jenkins/generic-webhook-trigger/invoke?token=mypipeline HTTP/1.1
> Host: localhost:8080
> User-Agent: curl/7.81.0
> Accept: */*
> Content-Type: application/json
> Content-Length: 32
> 
* Mark bundle as not supporting multiuse
< HTTP/1.1 200 OK
< Date: Tue, 30 Jan 2024 15:55:12 GMT
< X-Content-Type-Options: nosniff
< Stapler-Trace-001: -> evaluate(<hudson.model.Hudson@2207a214> :hudson.model.Hudson,"/generic-webhook-trigger/invoke")
< Stapler-Trace-002: -> evaluate(((StaplerProxy)<hudson.model.Hudson@2207a214>).getTarget(),"/generic-webhook-trigger/invoke")
< Stapler-Trace-003: -> evaluate(<hudson.model.Hudson@2207a214>.getDynamic("generic-webhook-trigger",...),"/invoke")
< Stapler-Trace-004: -> evaluate(<org.jenkinsci.plugins.gwt.GenericWebHookRequestReceiver@3f89ab36> :org.jenkinsci.plugins.gwt.GenericWebHookRequestReceiver,"/invoke")
< Stapler-Trace-005: -> <org.jenkinsci.plugins.gwt.GenericWebHookRequestReceiver@3f89ab36>.doInvoke(...)
< Content-Type: application/json;charset=utf-8
< Content-Length: 187
< Server: Jetty(10.0.16)
< 
* Connection #0 to host localhost left intact
{"jobs":{"pipe":{"regexpFilterExpression":"","triggered":true,"resolvedVariables":{"name":"some value"},"regexpFilterText":"","id":13,"url":"queue/item/13/"}},"message":"Triggered jobs."}

The pipeline is triggered and logs:

Generic Cause
[Pipeline] Start of Pipeline
 Received:

{ "app":{ "name":"some value" }}

Contributing variables:

    name = some value

[Pipeline] properties
[Pipeline] node
Running on [Jenkins](http://localhost:8080/jenkins/computer/(built-in)/) in /home/bjerre/workspace/generic-webhook-trigger-plugin/work/workspace/pipe
[Pipeline] {
[Pipeline] sh
+ name is some value
/home/bjerre/workspace/generic-webhook-trigger-plugin/work/workspace/pipe@tmp/durable-e2bf08cd/script.sh: 1: name: not found
[Pipeline] }
[Pipeline] // node
[Pipeline] End of Pipeline

Closing this issue as I cannot reproduce it.

[ntfc]

I thought I was suffering from the same issue, but in the end the problem was the webhook setup in GitHub. Its content type must be application/json instead of application/x-www-form-urlencoded otherwise the JSON path expression won't work (obviously 🤦 😅 )