TMSS-190: payload is now formatted as parsable json string

SAS/TMSS/services/tmss_postgres_listener/lib/tmss_postgres_listener.py

@@ -107,7 +107,7 @@ class TMSSPGListener(PostgresListener):
         self.executeQuery(makePostgresNotificationQueries('', 'tmssapp_schedulingunitdraft', 'delete'))
         self.subscribe('tmssapp_schedulingunitdraft_delete', self.onSchedulingUnitDraftDeleted)
 
-        self.executeQuery(makePostgresNotificationQueries('', 'tmssapp_schedulingunitdraft', 'update', 'scheduling_constraints_doc'))
+        self.executeQuery(makePostgresNotificationQueries('', 'tmssapp_schedulingunitdraft', 'update', column_name='scheduling_constraints_doc', quote_column_value=False))
         self.subscribe('tmssapp_schedulingunitdraft_update_column_scheduling_constraints_doc'[:63], self.onSchedulingUnitDraftConstraintsUpdated)
 
         # Settings
@@ -200,8 +200,6 @@ class TMSSPGListener(PostgresListener):
 
     def onSchedulingUnitDraftConstraintsUpdated(self, payload = None):
         # convert payload string to nested json doc
-        payload = json.loads(payload)
-        payload['scheduling_constraints_doc'] = json.loads(payload['scheduling_constraints_doc'])
         self._sendNotification(TMSS_SCHEDULINGUNITDRAFT_OBJECT_EVENT_PREFIX+'.Constraints.Updated', payload)
 
     def onSettingUpdated(self, payload = None):