Set change url to gitweb URL.

So that status pages can easily link to gitweb urls of ref-update
triggered changes.

Change-Id: Id9b708a473d92c30727f66578a0174f18c657723
Reviewed-on: https://review.openstack.org/18602
Approved: Jeremy Stanley <fungi@yuggoth.org>
Reviewed-by: Jeremy Stanley <fungi@yuggoth.org>
Tested-by: Jenkins

zuul/model.py

@@ -247,6 +247,8 @@ class Pipeline(object):
         ret = {}
         if hasattr(changeish, 'url') and changeish.url is not None:
             ret['url'] = changeish.url
+        else:
+            ret['url'] = None
         ret['id'] = changeish._id()
         ret['project'] = changeish.project.name
         ret['jobs'] = []
@@ -607,6 +609,7 @@ class TriggerEvent(object):
             change.ref = self.ref
             change.oldrev = self.oldrev
             change.newrev = self.newrev
+            change.url = trigger.getGitwebUrl(project, sha=self.newrev)
 
         return change
 

zuul/trigger/gerrit.py

@@ -342,3 +342,9 @@ class Gerrit(object):
             port = 29418
         url = 'ssh://%s@%s:%s/%s' % (user, server, port, project.name)
         return url
+
+    def getGitwebUrl(self, project, sha=None):
+        url = '%s/gitweb?p=%s.git' % (self.baseurl, project)
+        if sha:
+            url += ';a=commitdiff;h=' + sha
+        return url