Scriptrunner - Retrieve sprint changelog

You get a changeLog with an issueUpdated event because that changelog was needed to generate the Change History data.

There is no change history for sprints. That data simply doesn't exist anywhere.

But it does seem like the event itself contains both the current and previous version of the sprint entity.

So you need to examine if the sprint start date changed, you could try this:

if(event.previousValue.startDate != event.sprint.startDate){
   //do something becuase the sprint start date is changed.
}

FYI, since the greenhopper javadoc has not been updated since version 6.x, the best way to find this sort of thing is just with the scriptrunner's script editor:

Downloaded the source and browsed the .jar file. Found my answer in case it helps others:

log.error "### current " + event.sprint.endDate
log.error "### previous " + event.previousValue.endDate