Add some output

monitor.py

@@ -26,7 +26,7 @@ class Monitor:
       elif event['Action'] == 'die':
         self._remove(event['id'])
       else:
-        print('Monitor.monitor(): unexpected event %s' % event['Action'])
+        print('Monitor.monitor(): unexpected event %s' % event['Action'], flush=True)
 
 
   def _add(self, infos):

report.py

@@ -14,6 +14,8 @@ args = parser.parse_args()
 updater = Updater(args.etcd_host, args.etcd_port, args.etcd_prefix)
 monitor = Monitor(args.name, updater.add_containers, updater.remove_containers)
 
+print('Starting updater...', flush=True)
+
 updater.wipe()
 monitor.monitor()
 

updater.py

@@ -39,6 +39,7 @@ class Updater:
   def add_containers(self, new_containers):
     for container in new_containers:
       name = container['name']
+      print('Adding container %s' % name)
       self._write_obj('/containers/%s' % name, container)
       for k, v in container['labels'].items():
         self._write('/labels/%s/%s' % (k, name), v)
@@ -51,6 +52,7 @@ class Updater:
   def remove_containers(self, old_containers):
     for container in old_containers:
       name = container['name']
+      print('Removing container %s' % name)
       self._delete('/containers/%s' % name)
       for k, v in container['labels'].items():
         self._delete('/labels/%s/%s' % (k, name))
@@ -60,5 +62,6 @@ class Updater:
     self._notify_update()
 
   def _notify_update(self):
+    print('Update completed', flush=True)
     self._write('/_updated', time.time())