How do you debug Jenkins pipelines?

[Yeikel]

Besides running the pipeline in a Jenkins instance, is there any other way to validate Jenkins pipelines? I  sometimes see myself running a long pipeline after a refactor to see a runtime exception (like invalid methods)

I imagine that setting breakpoints is wishful thinking, but is it possible?

Thanks!

[ch.fetzer]

In jenkinsfile editor of eclipse I noticed some function to give a jenkinsfile to Jenkins for validation but I did not get this working up to now. 

My method to make it work is tracing currently. 

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Von: Yeikel <yeik...@gmail.com>

Datum: 09.04.20 20:21 (GMT+01:00)

An: jenkins...@googlegroups.com

Betreff: How do you debug Jenkins pipelines?

Besides running the pipeline in a Jenkins instance, is there any other way to validate Jenkins pipelines? I  sometimes see myself running a long pipeline after a refactor to see a runtime exception (like invalid methods)

I imagine that setting breakpoints is wishful thinking, but is it possible?

Thanks!

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[Yeikel]

What do you mean with "tracing" ? Running it on an instance?

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[Christoph Fetzer]

Sorry for the delay, I've been on vacation.

With tracing I understood adding output to the code that helps you understanding what happens e.g. variable content,....

For sure that's not the most efficient way and in case your pipeline runs for a time it might get boring....

Am Donnerstag, 9. April 2020 20:55:10 UTC+2 schrieb Yeikel:

What do you mean with "tracing" ? Running it on an instance?

On Thu, Apr 9, 2020, 2:48 PM ch.fetzer <ch.f...@gmx.net> wrote:

In jenkinsfile editor of eclipse I noticed some function to give a jenkinsfile to Jenkins for validation but I did not get this working up to now. 

My method to make it work is tracing currently. 

-------- Ursprüngliche Nachricht --------

Von: Yeikel <yeik...@gmail.com>

Datum: 09.04.20 20:21 (GMT+01:00)

An: jenkins...@googlegroups.com

Betreff: How do you debug Jenkins pipelines?

Besides running the pipeline in a Jenkins instance, is there any other way to validate Jenkins pipelines? I  sometimes see myself running a long pipeline after a refactor to see a runtime exception (like invalid methods)

I imagine that setting breakpoints is wishful thinking, but is it possible?

Thanks!

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[Jérôme Godbout]

I have a test project pipeline where I copy my code and test it there, only the part I want to test, avoid the long checkout, I copy the source into the workspace directly. The painfull part is testing with interaction with external server (that actually deploy, AppCenter, Azure, Amazone Cloud, Artifactory…). I need to up a dummy server and test on it while testing my script code.

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[Nick Stolwijk]

You can validate your Jenkinsfile by sending it to your Jenkinsserver[1]. There is also a VSCode plugin to send it. [2].

[1] https://jenkins.io/doc/book/pipeline/development/

[2] https://jenkins.io/blog/2018/11/07/Validate-Jenkinsfile/

Hth,

Nick Stolwijk

~~~ Try to leave this world a little better than you found it and, when your turn comes to die, you can die happy in feeling that at any rate you have not wasted your time but have done your best ~~~

Lord Baden-Powell

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[Jan Monterrubio]

You want to be able to do something like this?

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[Lee Meador]

Here's some links to stuff I found useful. It isn't easy to debug them. 

The addition of println statements here and there is old fashioned but does work however slowly. 

Using the way Jenkins lets you put a part of a script in a test job with the inline editor (when you have a pipeline job without a Jenkinsfile) can help you see how things work with a shorter turnaround. But it only helps sometimes.

https://jenkins.io/doc/book/pipeline/development/ 

https://dzone.com/articles/10-tips-to-debug-jenkins-pipelines 

https://github.com/jenkinsci/JenkinsPipelineUnit 

 

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-- Lee Meador
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[doug liu]

Exactly! Any guide on this? thanks!