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-rw-r--r--synapse/api/filtering.py5
-rw-r--r--synapse/handlers/sync.py64
-rw-r--r--synapse/rest/client/v2_alpha/sync.py75
3 files changed, 54 insertions, 90 deletions
diff --git a/synapse/api/filtering.py b/synapse/api/filtering.py
index 4d570b74f8..c066ce89ef 100644
--- a/synapse/api/filtering.py
+++ b/synapse/api/filtering.py
@@ -54,7 +54,7 @@ class Filtering(object):
         ]
 
         room_level_definitions = [
-            "state", "events", "ephemeral"
+            "state", "timeline", "ephemeral"
         ]
 
         for key in top_level_definitions:
@@ -135,6 +135,9 @@ class Filter(object):
     def __init__(self, filter_json):
         self.filter_json = filter_json
 
+    def timeline_limit(self):
+        return self.filter_json.get("room", {}).get("timeline", {}).get(limit, 10)
+
     def filter_public_user_data(self, events):
         return self._filter_on_key(events, ["public_user_data"])
 
diff --git a/synapse/handlers/sync.py b/synapse/handlers/sync.py
index 9914ff6f9c..2a0e045430 100644
--- a/synapse/handlers/sync.py
+++ b/synapse/handlers/sync.py
@@ -28,21 +28,26 @@ logger = logging.getLogger(__name__)
 
 SyncConfig = collections.namedtuple("SyncConfig", [
     "user",
-    "limit",
-    "gap",
-    "sort",
-    "backfill",
     "filter",
 ])
 
+class TimelineBatch(collections.namedtuple("TimelineBatch", [
+    "prev_batch",
+    "events",
+    "limited",
+])):
+    __slots__ = []
+
+    def __nonzero__(self):
+        """Make the result appear empty if there are no updates. This is used
+        to tell if room needs to be part of the sync result.
+        """
+        return bool(self.events)
 
 class RoomSyncResult(collections.namedtuple("RoomSyncResult", [
     "room_id",
-    "limited",
-    "published",
-    "events",
+    "timeline",
     "state",
-    "prev_batch",
     "ephemeral",
 ])):
     __slots__ = []
@@ -51,13 +56,12 @@ class RoomSyncResult(collections.namedtuple("RoomSyncResult", [
         """Make the result appear empty if there are no updates. This is used
         to tell if room needs to be part of the sync result.
         """
-        return bool(self.events or self.state or self.ephemeral)
+        return bool(self.timeline or self.state or self.ephemeral)
 
 
 class SyncResult(collections.namedtuple("SyncResult", [
     "next_batch",  # Token for the next sync
-    "private_user_data",  # List of private events for the user.
-    "public_user_data",  # List of public events for all users.
+    "presence",  # List of presence events for the user.
     "rooms",  # RoomSyncResult for each room.
 ])):
     __slots__ = []
@@ -133,12 +137,6 @@ class SyncHandler(BaseHandler):
         Returns:
             A Deferred SyncResult.
         """
-        if sync_config.sort == "timeline,desc":
-            # TODO(mjark): Handle going through events in reverse order?.
-            # What does "most recent events" mean when applying the limits mean
-            # in this case?
-            raise NotImplementedError()
-
         now_token = yield self.event_sources.get_current_token()
 
         presence_stream = self.event_sources.sources["presence"]
@@ -155,20 +153,15 @@ class SyncHandler(BaseHandler):
             membership_list=[Membership.INVITE, Membership.JOIN]
         )
 
-        # TODO (mjark): Does public mean "published"?
-        published_rooms = yield self.store.get_rooms(is_public=True)
-        published_room_ids = set(r["room_id"] for r in published_rooms)
-
         rooms = []
         for event in room_list:
             room_sync = yield self.initial_sync_for_room(
-                event.room_id, sync_config, now_token, published_room_ids
+                event.room_id, sync_config, now_token,
             )
             rooms.append(room_sync)
 
         defer.returnValue(SyncResult(
-            public_user_data=presence,
-            private_user_data=[],
+            presence=presence,
             rooms=rooms,
             next_batch=now_token,
         ))
@@ -192,7 +185,6 @@ class SyncHandler(BaseHandler):
 
         defer.returnValue(RoomSyncResult(
             room_id=room_id,
-            published=room_id in published_room_ids,
             events=recents,
             prev_batch=prev_batch_token,
             state=current_state_events,
@@ -219,7 +211,6 @@ class SyncHandler(BaseHandler):
         presence, presence_key = yield presence_source.get_new_events_for_user(
             user=sync_config.user,
             from_key=since_token.presence_key,
-            limit=sync_config.limit,
         )
         now_token = now_token.copy_and_replace("presence_key", presence_key)
 
@@ -227,7 +218,6 @@ class SyncHandler(BaseHandler):
         typing, typing_key = yield typing_source.get_new_events_for_user(
             user=sync_config.user,
             from_key=since_token.typing_key,
-            limit=sync_config.limit,
         )
         now_token = now_token.copy_and_replace("typing_key", typing_key)
 
@@ -252,16 +242,18 @@ class SyncHandler(BaseHandler):
         published_rooms = yield self.store.get_rooms(is_public=True)
         published_room_ids = set(r["room_id"] for r in published_rooms)
 
+        timeline_limit = sync_config.filter.timeline_limit()
+
         room_events, _ = yield self.store.get_room_events_stream(
             sync_config.user.to_string(),
             from_key=since_token.room_key,
             to_key=now_token.room_key,
             room_id=None,
-            limit=sync_config.limit + 1,
+            limit=timeline_limit + 1,
         )
 
         rooms = []
-        if len(room_events) <= sync_config.limit:
+        if len(room_events) <= timeline_limit:
             # There is no gap in any of the rooms. Therefore we can just
             # partition the new events by room and return them.
             events_by_room_id = {}
@@ -365,8 +357,9 @@ class SyncHandler(BaseHandler):
         max_repeat = 3  # Only try a few times per room, otherwise
         room_key = now_token.room_key
         end_key = room_key
+        timeline_limit = sync_config.filter.timeline_limit()
 
-        while limited and len(recents) < sync_config.limit and max_repeat:
+        while limited and len(recents) < timeline_limit and max_repeat:
             events, keys = yield self.store.get_recent_events_for_room(
                 room_id,
                 limit=load_limit + 1,
@@ -393,7 +386,9 @@ class SyncHandler(BaseHandler):
             "room_key", room_key
         )
 
-        defer.returnValue((recents, prev_batch_token, limited))
+        defer.returnValue(TimelineBatch(
+            events=recents, prev_batch=prev_batch_token, limited=limited
+        ))
 
     @defer.inlineCallbacks
     def incremental_sync_with_gap_for_room(self, room_id, sync_config,
@@ -408,7 +403,7 @@ class SyncHandler(BaseHandler):
 
         # TODO(mjark): Check for redactions we might have missed.
 
-        recents, prev_batch_token, limited = yield self.load_filtered_recents(
+        batch = yield self.load_filtered_recents(
             room_id, sync_config, now_token, since_token,
         )
 
@@ -437,11 +432,8 @@ class SyncHandler(BaseHandler):
 
         room_sync = RoomSyncResult(
             room_id=room_id,
-            published=room_id in published_room_ids,
-            events=recents,
-            prev_batch=prev_batch_token,
+            timeline=batch,
             state=state_events_delta,
-            limited=limited,
             ephemeral=typing_by_room.get(room_id, [])
         )
 
diff --git a/synapse/rest/client/v2_alpha/sync.py b/synapse/rest/client/v2_alpha/sync.py
index cac28b47b6..ea6600b1d5 100644
--- a/synapse/rest/client/v2_alpha/sync.py
+++ b/synapse/rest/client/v2_alpha/sync.py
@@ -36,47 +36,35 @@ class SyncRestServlet(RestServlet):
 
     GET parameters::
         timeout(int): How long to wait for new events in milliseconds.
-        limit(int): Maxiumum number of events per room to return.
-        gap(bool): Create gaps the message history if limit is exceeded to
-            ensure that the client has the most recent messages. Defaults to
-            "true".
-        sort(str,str): tuple of sort key (e.g. "timeline") and direction
-            (e.g. "asc", "desc"). Defaults to "timeline,asc".
         since(batch_token): Batch token when asking for incremental deltas.
         set_presence(str): What state the device presence should be set to.
             default is "online".
-        backfill(bool): Should the HS request message history from other
-            servers. This may take a long time making it unsuitable for clients
-            expecting a prompt response. Defaults to "true".
         filter(filter_id): A filter to apply to the events returned.
-        filter_*: Filter override parameters.
 
     Response JSON::
         {
-            "next_batch": // batch token for the next /sync
-            "private_user_data": // private events for this user.
-            "public_user_data": // public events for all users including the
-                                // public events for this user.
-            "rooms": [{ // List of rooms with updates.
-                "room_id": // Id of the room being updated
-                "limited": // Was the per-room event limit exceeded?
-                "published": // Is the room published by our HS?
-                "event_map": // Map of EventID -> event JSON.
-                "events": { // The recent events in the room if gap is "true"
-                            // otherwise the next events in the room.
-                    "batch": [] // list of EventIDs in the "event_map".
-                    "prev_batch": // back token for getting previous events.
-                }
-                "state": [] // list of EventIDs updating the current state to
-                            // be what it should be at the end of the batch.
-                "ephemeral": []
+          "next_batch": // batch token for the next /sync
+          "presence": // presence data for the user.
+          "rooms": {
+            "roomlist": [{ // List of rooms with updates.
+              "room_id": // Id of the room being updated
+              "event_map": // Map of EventID -> event JSON.
+              "timeline": { // The recent events in the room if gap is "true"
+                  "limited": // Was the per-room event limit exceeded?
+                          // otherwise the next events in the room.
+                  "batch": [] // list of EventIDs in the "event_map".
+                  "prev_batch": // back token for getting previous events.
+              }
+              "state": [] // list of EventIDs updating the current state to
+                          // be what it should be at the end of the batch.
+              "ephemeral": []
             }]
+          }
         }
     """
 
     PATTERN = client_v2_pattern("/sync$")
-    ALLOWED_SORT = set(["timeline,asc", "timeline,desc"])
-    ALLOWED_PRESENCE = set(["online", "offline", "idle"])
+    ALLOWED_PRESENCE = set(["online", "offline"])
 
     def __init__(self, hs):
         super(SyncRestServlet, self).__init__()
@@ -90,45 +78,29 @@ class SyncRestServlet(RestServlet):
         user, token_id = yield self.auth.get_user_by_req(request)
 
         timeout = parse_integer(request, "timeout", default=0)
-        limit = parse_integer(request, "limit", required=True)
-        gap = parse_boolean(request, "gap", default=True)
-        sort = parse_string(
-            request, "sort", default="timeline,asc",
-            allowed_values=self.ALLOWED_SORT
-        )
         since = parse_string(request, "since")
         set_presence = parse_string(
             request, "set_presence", default="online",
             allowed_values=self.ALLOWED_PRESENCE
         )
-        backfill = parse_boolean(request, "backfill", default=False)
         filter_id = parse_string(request, "filter", default=None)
 
         logger.info(
-            "/sync: user=%r, timeout=%r, limit=%r, gap=%r, sort=%r, since=%r,"
-            " set_presence=%r, backfill=%r, filter_id=%r" % (
-                user, timeout, limit, gap, sort, since, set_presence,
-                backfill, filter_id
+            "/sync: user=%r, timeout=%r, since=%r,"
+            " set_presence=%r, filter_id=%r" % (
+                user, timeout, since, set_presence, filter_id
             )
         )
 
-        # TODO(mjark): Load filter and apply overrides.
         try:
             filter = yield self.filtering.get_user_filter(
                 user.localpart, filter_id
             )
         except:
             filter = Filter({})
-        # filter = filter.apply_overrides(http_request)
-        # if filter.matches(event):
-        #   # stuff
 
         sync_config = SyncConfig(
             user=user,
-            gap=gap,
-            limit=limit,
-            sort=sort,
-            backfill=backfill,
             filter=filter,
         )
 
@@ -144,11 +116,8 @@ class SyncRestServlet(RestServlet):
         time_now = self.clock.time_msec()
 
         response_content = {
-            "public_user_data": self.encode_user_data(
-                sync_result.public_user_data, filter, time_now
-            ),
-            "private_user_data": self.encode_user_data(
-                sync_result.private_user_data, filter, time_now
+            "presence": self.encode_user_data(
+                sync_result.presence, filter, time_now
             ),
             "rooms": self.encode_rooms(
                 sync_result.rooms, filter, time_now, token_id