Merge "Collect and report last reconfigured timestamp"

etc/status/public_html/status-basic.json-sample

@@ -1,4 +1,5 @@
 {
+    "last_reconfigured": 1389381756000,
     "message": "Example error message",
     "pipelines": [
         {

etc/status/public_html/status-openstack.json-sample

@@ -1,4 +1,5 @@
 {
+    "last_reconfigured": 1389381756000,
     "pipelines": [
         {
             "name": "check",

zuul/scheduler.py

@@ -132,6 +132,7 @@ class Scheduler(threading.Thread):
         self.layout = model.Layout()
 
         self.zuul_version = zuul_version.version_info.version_string()
+        self.last_reconfigured = None
 
     def stop(self):
         self._stopped = True
@@ -460,6 +461,7 @@ class Scheduler(threading.Thread):
         self.log.debug("Waiting for reconfiguration")
         event.wait()
         self.log.debug("Reconfiguration complete")
+        self.last_reconfigured = int(time.time())
 
     def promote(self, pipeline_name, change_ids):
         event = PromoteEvent(pipeline_name, change_ids)
@@ -775,6 +777,9 @@ class Scheduler(threading.Thread):
             ret += ', queue length: %s' % self.trigger_event_queue.qsize()
             ret += '</p>'
 
+        if self.last_reconfigured:
+            ret += '<p>Last reconfigured: %s</p>' % self.last_reconfigured
+
         keys = self.layout.pipelines.keys()
         for key in keys:
             pipeline = self.layout.pipelines[key]
@@ -806,6 +811,9 @@ class Scheduler(threading.Thread):
         data['result_event_queue']['length'] = \
             self.result_event_queue.qsize()
 
+        if self.last_reconfigured:
+            data['last_reconfigured'] = self.last_reconfigured * 1000
+
         pipelines = []
         data['pipelines'] = pipelines
         keys = self.layout.pipelines.keys()