Add support for batch sending new events

synapse/handlers/message.py

@@ -1360,6 +1360,7 @@ class EventCreationHandler:
         ratelimit: bool = True,
         extra_users: Optional[List[UserID]] = None,
         ignore_shadow_ban: bool = False,
+        dont_notify: bool = False,
     ) -> EventBase:
         """Processes new events. Please note that if batch persisting events, an error in
         handling any one of these events will result in all of the events being dropped.
@@ -1379,6 +1380,8 @@ class EventCreationHandler:
             ignore_shadow_ban: True if shadow-banned users should be allowed to
                 send this event.
 
+            dont_notify
+
         Return:
             If the event was deduplicated, the previous, duplicate, event. Otherwise,
             `event`.
@@ -1456,6 +1459,7 @@ class EventCreationHandler:
                         events_and_context=events_and_context,
                         ratelimit=ratelimit,
                         extra_users=extra_users,
+                        dont_notify=dont_notify,
                     ),
                     run_in_background(
                         self.cache_joined_hosts_for_events, events_and_context
@@ -1473,6 +1477,7 @@ class EventCreationHandler:
         events_and_context: List[Tuple[EventBase, EventContext]],
         ratelimit: bool = True,
         extra_users: Optional[List[UserID]] = None,
+        dont_notify: bool = False,
     ) -> EventBase:
         """Actually persists new events. Should only be called by
         `handle_new_client_event`, and see its docstring for documentation of
@@ -1502,6 +1507,7 @@ class EventCreationHandler:
                         requester=requester,
                         ratelimit=ratelimit,
                         extra_users=extra_users,
+                        dont_notify=dont_notify,
                     )
                 except SynapseError as e:
                     if e.code == HTTPStatus.CONFLICT:
@@ -1531,6 +1537,7 @@ class EventCreationHandler:
                 events_and_context,
                 ratelimit=ratelimit,
                 extra_users=extra_users,
+                dont_notify=dont_notify,
             )
 
             return event
@@ -1652,6 +1659,7 @@ class EventCreationHandler:
         events_and_context: List[Tuple[EventBase, EventContext]],
         ratelimit: bool = True,
         extra_users: Optional[List[UserID]] = None,
+        dont_notify: bool = False,
     ) -> EventBase:
         """Called when we have fully built the events, have already
         calculated the push actions for the events, and checked auth.
@@ -1954,7 +1962,7 @@ class EventCreationHandler:
             pos = PersistedEventPosition(self._instance_name, stream_ordering)
             events_and_pos.append((event, pos))
 
-            if event.type == EventTypes.Message:
+            if not dont_notify and event.type == EventTypes.Message:
                 # We don't want to block sending messages on any presence code. This
                 # matters as sometimes presence code can take a while.
                 run_as_background_process(
@@ -1969,6 +1977,9 @@ class EventCreationHandler:
             except Exception:
                 logger.exception("Error notifying about new room events")
 
+        if not dont_notify:
+            # Skip notifying clients, this is used for Beeper's custom
+            # batch sending of non-historical messages.
             run_in_background(_notify)
 
         return persisted_events[-1]

synapse/handlers/room_batch.py

@@ -274,6 +274,8 @@ class RoomBatchHandler:
         inherited_depth: int,
         initial_state_event_ids: List[str],
         app_service_requester: Requester,
+        beeper_new_messages: bool,
+        beeper_initial_prev_event_ids: List[str] = None,
     ) -> List[str]:
         """Create and persists all events provided sequentially. Handles the
         complexity of creating events in chronological order so they can
@@ -293,12 +295,15 @@ class RoomBatchHandler:
                 the start of the historical batch since it's floating with no
                 prev_events to derive state from automatically.
             app_service_requester: The requester of an application service.
+            beeper_new_messages: Is this a batch of new events rather than history?
+            beeper_initial_prev_event_ids: prev_event_ids for the first event to send.
 
         Returns:
             List of persisted event IDs
         """
         assert app_service_requester.app_service
 
+        if not beeper_new_messages:
             # We expect the first event in a historical batch to be an insertion event
             assert events_to_create[0]["type"] == EventTypes.MSC2716_INSERTION
             # We expect the last event in a historical batch to be an batch event
@@ -307,7 +312,7 @@ class RoomBatchHandler:
         # Make the historical event chain float off on its own by specifying no
         # prev_events for the first event in the chain which causes the HS to
         # ask for the state at the start of the batch later.
-        prev_event_ids: List[str] = []
+        prev_event_ids: List[str] = beeper_initial_prev_event_ids or []
 
         event_ids = []
         events_to_persist = []
@@ -338,14 +343,14 @@ class RoomBatchHandler:
                 # Only the first event (which is the insertion event) in the
                 # chain should be floating. The rest should hang off each other
                 # in a chain.
-                allow_no_prev_events=index == 0,
+                allow_no_prev_events=index == 0 and not beeper_new_messages,
                 prev_event_ids=event_dict.get("prev_events"),
                 # Since the first event (which is the insertion event) in the
                 # chain is floating with no `prev_events`, it can't derive state
                 # from anywhere automatically. So we need to set some state
                 # explicitly.
                 state_event_ids=initial_state_event_ids if index == 0 else None,
-                historical=True,
+                historical=not beeper_new_messages,
                 depth=inherited_depth,
             )
             context = await unpersisted_context.persist(event)
@@ -373,6 +378,18 @@ class RoomBatchHandler:
             event_ids.append(event_id)
             prev_event_ids = [event_id]
 
+        if beeper_new_messages:
+            for index, (event, context) in enumerate(events_to_persist):
+                await self.event_creation_handler.handle_new_client_event(
+                    await self.create_requester_for_user_id_from_app_service(
+                        event.sender, app_service_requester.app_service
+                    ),
+                    event=event,
+                    context=context,
+                    dont_notify=index < len(events_to_persist) - 1,
+                )
+            return event_ids
+
         # Persist events in reverse-chronological order so they have the
         # correct stream_ordering as they are backfilled (which decrements).
         # Events are sorted by (topological_ordering, stream_ordering)
@@ -397,6 +414,8 @@ class RoomBatchHandler:
         inherited_depth: int,
         initial_state_event_ids: List[str],
         app_service_requester: Requester,
+        beeper_new_messages: bool,
+        beeper_initial_prev_event_ids: List[str] = None,
     ) -> Tuple[List[str], str]:
         """
         Handles creating and persisting all of the historical events as well as
@@ -418,6 +437,8 @@ class RoomBatchHandler:
                 `/batch_send?prev_event_id=$abc` plus the outcome of
                 `persist_state_events_at_start`
             app_service_requester: The requester of an application service.
+            beeper_new_messages: Is this a batch of new events rather than history?
+            beeper_initial_prev_event_ids: prev_event_ids for the first event to send.
 
         Returns:
             Tuple containing a list of created events and the next_batch_id
@@ -438,6 +459,7 @@ class RoomBatchHandler:
             # the last event we're inserting
             "origin_server_ts": last_event_in_batch["origin_server_ts"],
         }
+        if not beeper_new_messages:
             # Add the batch event to the end of the batch (newest-in-time)
             events_to_create.append(batch_event)
 
@@ -454,6 +476,7 @@ class RoomBatchHandler:
         next_batch_id = insertion_event["content"][
             EventContentFields.MSC2716_NEXT_BATCH_ID
         ]
+        if not beeper_new_messages:
             # Prepend the insertion event to the start of the batch (oldest-in-time)
             events_to_create = [insertion_event] + events_to_create
 
@@ -464,6 +487,8 @@ class RoomBatchHandler:
             inherited_depth=inherited_depth,
             initial_state_event_ids=initial_state_event_ids,
             app_service_requester=app_service_requester,
+            beeper_new_messages=beeper_new_messages,
+            beeper_initial_prev_event_ids=beeper_initial_prev_event_ids,
         )
 
         return event_ids, next_batch_id

synapse/push/bulk_push_rule_evaluator.py

@@ -332,6 +332,7 @@ class BulkPushRuleEvaluator:
         if (
             not event.internal_metadata.is_notifiable()
             or event.internal_metadata.is_historical()
+            or event.content.get(EventContentFields.MSC2716_HISTORICAL)
         ):
             # Push rules for events that aren't notifiable can't be processed by this and
             # we want to skip push notification actions for historical messages

synapse/replication/http/send_event.py

@@ -84,6 +84,7 @@ class ReplicationSendEventRestServlet(ReplicationEndpoint):
         requester: Requester,
         ratelimit: bool,
         extra_users: List[UserID],
+        dont_notify: bool,
     ) -> JsonDict:
         """
         Args:
@@ -94,6 +95,7 @@ class ReplicationSendEventRestServlet(ReplicationEndpoint):
             context
             ratelimit
             extra_users: Any extra users to notify about event
+            dont_notify
         """
         serialized_context = await context.serialize(event, store)
 
@@ -108,6 +110,7 @@ class ReplicationSendEventRestServlet(ReplicationEndpoint):
             "requester": requester.serialize(),
             "ratelimit": ratelimit,
             "extra_users": [u.to_string() for u in extra_users],
+            "dont_notify": dont_notify,
         }
 
         return payload
@@ -133,13 +136,18 @@ class ReplicationSendEventRestServlet(ReplicationEndpoint):
 
             ratelimit = content["ratelimit"]
             extra_users = [UserID.from_string(u) for u in content["extra_users"]]
+            dont_notify = content["dont_notify"]
 
         logger.info(
             "Got event to send with ID: %s into room: %s", event.event_id, event.room_id
         )
 
         event = await self.event_creation_handler.persist_and_notify_client_events(
-            requester, [(event, context)], ratelimit=ratelimit, extra_users=extra_users
+            requester,
+            [(event, context)],
+            ratelimit=ratelimit,
+            extra_users=extra_users,
+            dont_notify=dont_notify,
         )
 
         return (

synapse/replication/http/send_events.py

@@ -82,6 +82,7 @@ class ReplicationSendEventsRestServlet(ReplicationEndpoint):
         requester: Requester,
         ratelimit: bool,
         extra_users: List[UserID],
+        dont_notify: bool,
     ) -> JsonDict:
         """
         Args:
@@ -108,7 +109,7 @@ class ReplicationSendEventsRestServlet(ReplicationEndpoint):
             }
             serialized_events.append(serialized_event)
 
-        payload = {"events": serialized_events}
+        payload = {"events": serialized_events, "dont_notify": dont_notify}
 
         return payload
 
@@ -118,6 +119,7 @@ class ReplicationSendEventsRestServlet(ReplicationEndpoint):
         with Measure(self.clock, "repl_send_events_parse"):
             events_and_context = []
             events = payload["events"]
+            dont_notify = payload["dont_notify"]
 
             for event_payload in events:
                 event_dict = event_payload["event"]
@@ -152,7 +154,11 @@ class ReplicationSendEventsRestServlet(ReplicationEndpoint):
 
             last_event = (
                 await self.event_creation_handler.persist_and_notify_client_events(
-                    requester, events_and_context, ratelimit, extra_users
+                    requester,
+                    events_and_context,
+                    ratelimit,
+                    extra_users,
+                    dont_notify=dont_notify,
                 )
             )
 

synapse/rest/client/room_batch.py

@@ -26,6 +26,7 @@ from synapse.http.servlet import (
     parse_json_object_from_request,
     parse_string,
     parse_strings_from_args,
+    parse_boolean_from_args,
 )
 from synapse.http.site import SynapseRequest
 from synapse.types import JsonDict
@@ -96,6 +97,9 @@ class RoomBatchSendEventRestServlet(RestServlet):
             request.args, "prev_event_id"
         )
         batch_id_from_query = parse_string(request, "batch_id")
+        beeper_new_messages = parse_boolean_from_args(
+            request.args, "com.beeper.new_messages"
+        )
 
         if prev_event_ids_from_query is None:
             raise SynapseError(
@@ -151,7 +155,7 @@ class RoomBatchSendEventRestServlet(RestServlet):
         # Create and persist all of the state events that float off on their own
         # before the batch. These will most likely be all of the invite/member
         # state events used to auth the upcoming historical messages.
-        if body["state_events_at_start"]:
+        if body["state_events_at_start"] and not beeper_new_messages:
             state_event_ids_at_start = (
                 await self.room_batch_handler.persist_state_events_at_start(
                     state_events_at_start=body["state_events_at_start"],
@@ -177,6 +181,8 @@ class RoomBatchSendEventRestServlet(RestServlet):
         base_insertion_event = None
         if batch_id_from_query:
             batch_id_to_connect_to = batch_id_from_query
+        elif beeper_new_messages:
+            batch_id_to_connect_to = None
         # Otherwise, create an insertion event to act as a starting point.
         #
         # We don't always have an insertion event to start hanging more history
@@ -227,8 +233,17 @@ class RoomBatchSendEventRestServlet(RestServlet):
             inherited_depth=inherited_depth,
             initial_state_event_ids=state_event_ids,
             app_service_requester=requester,
+            beeper_new_messages=beeper_new_messages,
+            beeper_initial_prev_event_ids=prev_event_ids_from_query
+            if beeper_new_messages
+            else None,
         )
 
+        if beeper_new_messages:
+            insertion_event_id = batch_event_id = None
+            historical_event_ids = event_ids
+            next_batch_id = None
+        else:
             insertion_event_id = event_ids[0]
             batch_event_id = event_ids[-1]
             historical_event_ids = event_ids[1:-1]