Very first cut of calculating actions for events as they come in. Doesn't store them yet. Not very efficient.

synapse/handlers/_base.py

@@ -19,9 +19,12 @@ from synapse.api.errors import LimitExceededError, SynapseError, AuthError
 from synapse.crypto.event_signing import add_hashes_and_signatures
 from synapse.api.constants import Membership, EventTypes
 from synapse.types import UserID, RoomAlias
+from synapse.push.action_generator import ActionGenerator
 
 from synapse.util.logcontext import PreserveLoggingContext
 
+from synapse.events.utils import serialize_event
+
 import logging
 
 
@@ -264,6 +267,11 @@ class BaseHandler(object):
             event, context=context
         )
 
+        action_generator = ActionGenerator(self.store)
+        yield action_generator.handle_event(serialize_event(
+            event, self.clock.time_msec()
+        ))
+
         destinations = set(extra_destinations)
         for k, s in context.current_state.items():
             try: