Task #10898: also always call plain onObservationStatusChanged

SAS/OTDB_Services/OTDBBusListener.py

@@ -100,6 +100,14 @@ class OTDBBusListener(AbstractBusListener):
         else:
             logger.info("OTDBBusListener.handleMessage - handled unknown state: %s", msg.content['state'])
 
+        # apart from calling the above methods for known predefined states,
+        # also always call plain onObservationStatusChanged
+        # so subclasses can act on any status in this generic method.
+        self.onObservationStatusChanged(treeId, msg.content['state'], modificationTime)
+
+    def onObservationStatusChanged(self, treeId, new_status, modificationTime):
+        pass
+
     def onObservationDescribed(self, treeId, modificationTime):
         pass