Assigning to one of the Perforce plugin maintainers to ask a question.

Perforce already has a trigger mechanism, all that needs to be done is add support for that on Jenkins, similar to that in the Subversion and Git plugins: https://wiki.jenkins-ci.org/display/JENKINS/Subversion+Plugin

Something like this I imagine would be executed in the perforce trigger script:
/usr/bin/wget \
--header "Content-Type:text/plain;charset=UTF-8" \
--post-data "$CHANGELIST $P4_PATH`" \
-output-document "" \
--timeout=2 \
http://server/perforce/notifyCommit?rev=$REV

Is there any other way of doing this already?

(Polling the repository seems like a suboptimal solution. Can miss changelists, and has to be done quite frequently)

You can create a polling script that will trigger the correct builds by examining the changes. There is not yet a 'notifyCommit' interface to simplify this process, hence the need for this ticket.

Thanks.

Do you mean something like what is described in the last post in http://stackoverflow.com/questions/16435315/jenkins-perforce-plugin-multiple-changelists-in-a-single-poll ?

Or do you perhaps have an example polling script that does what you suggest?

Sorry, I meant to type trigger script, not polling script. They are two different things entirely.

It depends on what you intend. That stack overflow question is specifically about running a build per change list, not necessarily about a post commit trigger as this ticket describes.

In the case of this ticket, you would need to write a post commit trigger in perforce that analyzes each change, and kicks off the associated builds using the Jenkins REST api or CLI. As I mentioned, the script will need to do the heavy lifting, since there's no "notifyCommit" interface yet, which is what this ticket is for.