Task #8531: Event message requires a context field during construction. E.g. otdb.treestatusupdate.

LCS/Messaging/python/messaging/messages.py

@@ -241,9 +241,10 @@ class EventMessage(LofarMessage):
     will be stored in a persistent queue for later delivery.
     """
 
-    def __init__(self, content=None):
+    def __init__(self, context, content=None):
         super(EventMessage, self).__init__(content)
         self.durable = True
+        self.subject = context
 
 
 class MonitoringMessage(LofarMessage):

SAS/OTDB_Services/TreeStatusEvents.py

@@ -137,7 +137,7 @@ if __name__ == "__main__":
                 else:
                     for (treeid, state, modtime, creation) in record_list:
                         content = { "treeID" : treeid, "state" : state, "time_of_change" : modtime }
-                        msg = EventMessage(content)
+                        msg = EventMessage("otdb.treestatus", content)
                         print treeid, state, modtime, creation
                         send_bus.send(msg)
                         open('time_save.txt', 'wb').write(creation)