tree 6886c9ac425b3a5d6db95848869f408502b44e44
parent c0dedf8b3ff39ab90ce5c44acc03ed027851e584
author James E. Blair <jeblair@hp.com> 1407342232 -0700
committer James E. Blair <jeblair@openstack.org> 1408124296 -0700

Add a Zuul trigger

This adds the ability for a pipelite to have multiple triggers.

This also adds a "Zuul" trigger which is used to generate trigger
events based on internal actions Zuul has taken.

It supports two event types:

 * parent-change-enqueued: This can be used so that other pipelines
   can enqueue children of parents that are enqueued in a different
   pipeline.  Specifically, this lets OpenStack enqueue changes in
   check when their parents are enqueued in gate (which may be
   necessary because of our clean check rules).

   This could be used to replace the internal logic that enqueues
   children in dependent pipelines (moving that into explicit
   configuration instead).

   One can also imagine a future 'change-enqueued' event so that a
   pipeline could react directly to a change in another.

 * project-change-merged:  This can be used to trigger changes on all
   open changes for a project when a change is merged to that project.

   Specifically, this lets us perform light-weight merge checks on all
   open changes whenever a change is merged.

Change-Id: I2a67699dbed92a6b9c143a77795cb126f1f4dd57