Report queue window in status JSON.

In order to render queue window information nicely in status pages pass
the window for each queue in the JSON status blob. Also, annotate each
change in a queue with an active flag indicating whether or not it is
currently within the window.

Change-Id: Iccba9fb307f98a4fc145402ecd0a38f3d75b3253

tests/test_scheduler.py

@@ -2781,8 +2781,13 @@ class TestScheduler(testtools.TestCase):
         status_jobs = set()
         for p in data['pipelines']:
             for q in p['change_queues']:
+                if q['dependent']:
+                    self.assertEqual(q['window'], 20)
+                else:
+                    self.assertEqual(q['window'], 0)
                 for head in q['heads']:
                     for change in head:
+                        self.assertTrue(change['active'])
                         self.assertEqual(change['id'], '1,1')
                         for job in change['jobs']:
                             status_jobs.add(job['name'])

zuul/model.py

@@ -240,6 +240,8 @@ class Pipeline(object):
             j_queue = dict(name=queue.name)
             j_queues.append(j_queue)
             j_queue['heads'] = []
+            j_queue['window'] = queue.window
+            j_queue['dependent'] = queue.dependent
 
             j_changes = []
             for e in queue.queue:
@@ -299,6 +301,7 @@ class Pipeline(object):
     def formatItemJSON(self, item):
         changeish = item.change
         ret = {}
+        ret['active'] = item.active
         if hasattr(changeish, 'url') and changeish.url is not None:
             ret['url'] = changeish.url
         else:
@@ -672,6 +675,7 @@ class QueueItem(object):
         self.enqueue_time = None
         self.dequeue_time = None
         self.reported = False
+        self.active = False
 
     def __repr__(self):
         if self.pipeline:

zuul/scheduler.py

@@ -1133,6 +1133,8 @@ class BasePipelineManager(object):
                 pass
             return (True, nnfi)
         dep_item = self.getFailingDependentItem(item)
+        actionable = change_queue.isActionable(item)
+        item.active = actionable
         if dep_item:
             failing_reasons.append('a needed change is failing')
             self.cancelJobs(item, prime=False)
@@ -1151,11 +1153,11 @@ class BasePipelineManager(object):
                 change_queue.moveItem(item, nnfi)
                 changed = True
                 self.cancelJobs(item)
-            if change_queue.isActionable(item):
+            if actionable:
                 self.prepareRef(item)
                 if item.current_build_set.unable_to_merge:
                     failing_reasons.append("it has a merge conflict")
-        if change_queue.isActionable(item) and self.launchJobs(item):
+        if actionable and self.launchJobs(item):
             changed = True
         if self.pipeline.didAnyJobFail(item):
             failing_reasons.append("at least one job failed")