View changes to job configuration

[Jakub Bocheński]

Hi,
we have seed jobs that manage 80+ jobs and it's time consuming to review actual changes after each run.

As a quick solution I'm trying to use the Job Config History plugin and some groovy magic.

1. Get a list of affected jobs via

 build.getActions(javaposse.jobdsl.plugin.actions.GeneratedJobsBuildAction)
    .collectMany{ action -> action.modifiedObjects.collect{ it.jobName } }

2. Use Job Config History plugin to get a diff of configuration for each job (still working on this part)
3. Show the aggregated diff

I wanted to share this in case people have better solutions to this issue.

Also it would be awesome to have support for this built into job-dsl.
If job-dsl could at least mark which jobs had their config actually changed (as opposed to just touched) that would also be very helpful.

Our end goal here is to have the ability to preview the changes *before* they are applied.

[Jakub Bocheński]

as 2. this is how you can get a diff output (formatted for HTML)

def action = project.getActions(hudson.plugins.jobConfigHistory.JobConfigHistoryProjectAction)[0]

action.metaClass.getLines = { String timestamp1, String timestamp2 ->
 
      final XmlFile configXml1 = getOldConfigXml(timestamp1);
        final String[] configXml1Lines = configXml1.asString().split("\\n");
        final XmlFile configXml2 = getOldConfigXml(timestamp2);
        final String[] configXml2Lines = configXml2.asString().split("\\n");

        final String diffAsString = getDiffAsString(configXml1.getFile(),
                configXml2.getFile(), configXml1Lines, configXml2Lines);

        final List<String> diffLines = Arrays.asList(diffAsString.split("\n"));
        return getDiffLines(diffLines);
}



action.getLines('2017-11-20_12-51-06','2017-11-20_19-35-59')

[Jakub Bocheński]

Here is a complete script that will print a diff for each job changed by the current build

def since = build.startTimeInMillis

println 'Since : '+new Date(since)

def jobs = build
    .getActions(javaposse.jobdsl.plugin.actions.GeneratedJobsBuildAction)

    .collectMany{ action -> action.modifiedObjects.collect{ it.jobName } }

    .collect{ Jenkins.instance.itemMap[it] }


println 'Count : '+jobs.size()

def filtered = jobs
.collect { it.getAction(hudson.plugins.jobConfigHistory.JobConfigHistoryProjectAction) }
.findAll { action ->
  since <= action.jobConfigs[0].parsedDate().time
}

println 'Filtered : '+filtered.size()


filtered.each { action ->
 
  action.metaClass.getDiff = { String timestamp1, String timestamp2 ->

   
          final XmlFile configXml1 = getOldConfigXml(timestamp1);
          final String[] configXml1Lines = configXml1.asString().split("\\n");
          final XmlFile configXml2 = getOldConfigXml(timestamp2);
          final String[] configXml2Lines = configXml2.asString().split("\\n");

 
          getDiffAsString(configXml1.getFile(),
                  configXml2.getFile(), configXml1Lines, configXml2Lines);
  }

  println action.getDiff(action.jobConfigs[1].date, action.jobConfigs[0].date)

}

println ''

[Jakub Bocheński]

You can find a version adapted to a Groovy Post Build Step here: https://gist.github.com/jakub-bochenski/66bff585a330e19a7bd5a33694059a0d