Add m.room.deletion. If an event is deleted it will be returned to clients 'pruned', i.e. all client specified keys will be removed.

synapse/api/events/__init__.py

@@ -22,7 +22,7 @@ def serialize_event(hs, e):
     if not isinstance(e, SynapseEvent):
         return e
 
-    d = e.get_dict()
+    d = {k: v for k, v in e.get_dict().items() if v is not None or v is not False}
     if "age_ts" in d:
         d["age"] = int(hs.get_clock().time_msec()) - d["age_ts"]
         del d["age_ts"]
@@ -58,17 +58,19 @@ class SynapseEvent(JsonEncodedObject):
         "required_power_level",
         "age_ts",
         "prev_content",
+        "prev_state",
+        "pruned",
     ]
 
     internal_keys = [
         "is_state",
         "prev_events",
-        "prev_state",
         "depth",
         "destinations",
         "origin",
         "outlier",
         "power_level",
+        "deleted",
     ]
 
     required_keys = [

synapse/api/events/factory.py

@@ -17,7 +17,8 @@ from synapse.api.events.room import (
     RoomTopicEvent, MessageEvent, RoomMemberEvent, FeedbackEvent,
     InviteJoinEvent, RoomConfigEvent, RoomNameEvent, GenericEvent,
     RoomPowerLevelsEvent, RoomJoinRulesEvent, RoomOpsPowerLevelsEvent,
-    RoomCreateEvent, RoomAddStateLevelEvent, RoomSendEventLevelEvent
+    RoomCreateEvent, RoomAddStateLevelEvent, RoomSendEventLevelEvent,
+    RoomDeletionEvent,
 )
 
 from synapse.util.stringutils import random_string
@@ -39,6 +40,7 @@ class EventFactory(object):
         RoomAddStateLevelEvent,
         RoomSendEventLevelEvent,
         RoomOpsPowerLevelsEvent,
+        RoomDeletionEvent,
     ]
 
     def __init__(self, hs):

synapse/api/events/room.py

@@ -180,3 +180,12 @@ class RoomAliasesEvent(SynapseStateEvent):
 
     def get_content_template(self):
         return {}
+
+
+class RoomDeletionEvent(SynapseEvent):
+    TYPE = "m.room.deletion"
+
+    valid_keys = SynapseEvent.valid_keys + ["deletes"]
+
+    def get_content_template(self):
+        return {}