WIP: Completely change how event streaming and pagination work. This reflects the change in the underlying storage model.

synapse/handlers/presence.py

@@ -17,7 +17,6 @@ from twisted.internet import defer
 
 from synapse.api.errors import SynapseError, AuthError
 from synapse.api.constants import PresenceState
-from synapse.api.streams import StreamData
 
 from ._base import BaseHandler
 
@@ -682,41 +681,10 @@ class PresenceHandler(BaseHandler):
                 user=observed_user,
                 clock=self.clock
             ),
-            stream_type=PresenceStreamData,
             store_id=statuscache.serial
         )
 
 
-class PresenceStreamData(StreamData):
-    def __init__(self, hs):
-        super(PresenceStreamData, self).__init__(hs)
-        self.presence = hs.get_handlers().presence_handler
-
-    def get_rows(self, user_id, from_key, to_key, limit, direction):
-        from_key = int(from_key)
-        to_key = int(to_key)
-
-        cachemap = self.presence._user_cachemap
-
-        # TODO(paul): limit, and filter by visibility
-        updates = [(k, cachemap[k]) for k in cachemap
-                   if from_key < cachemap[k].serial <= to_key]
-
-        if updates:
-            clock = self.presence.clock
-
-            latest_serial = max([x[1].serial for x in updates])
-            data = [x[1].make_event(user=x[0], clock=clock) for x in updates]
-            return ((data, latest_serial))
-        else:
-            return (([], self.presence._user_cachemap_latest_serial))
-
-    def max_token(self):
-        return self.presence._user_cachemap_latest_serial
-
-PresenceStreamData.EVENT_TYPE = PresenceStreamData
-
-
 class UserPresenceCache(object):
     """Store an observed user's state and status message.