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-rw-r--r--synapse/handlers/sync.py98
1 files changed, 45 insertions, 53 deletions
diff --git a/synapse/handlers/sync.py b/synapse/handlers/sync.py
index 48ab5707e1..e38fe1ef9c 100644
--- a/synapse/handlers/sync.py
+++ b/synapse/handlers/sync.py
@@ -17,8 +17,8 @@ from ._base import BaseHandler
 
 from synapse.streams.config import PaginationConfig
 from synapse.api.constants import Membership, EventTypes
-from synapse.util import unwrapFirstError
-from synapse.util.logcontext import LoggingContext, preserve_fn
+from synapse.util.async import concurrently_execute
+from synapse.util.logcontext import LoggingContext
 from synapse.util.metrics import Measure
 from synapse.util.caches.response_cache import ResponseCache
 from synapse.push.clientformat import format_push_rules_for_user
@@ -250,58 +250,50 @@ class SyncHandler(BaseHandler):
         joined = []
         invited = []
         archived = []
-        deferreds = []
-
-        room_list_chunks = [room_list[i:i + 10] for i in xrange(0, len(room_list), 10)]
-        for room_list_chunk in room_list_chunks:
-            for event in room_list_chunk:
-                if event.membership == Membership.JOIN:
-                    room_sync_deferred = preserve_fn(
-                        self.full_state_sync_for_joined_room
-                    )(
-                        room_id=event.room_id,
-                        sync_config=sync_config,
-                        now_token=now_token,
-                        timeline_since_token=timeline_since_token,
-                        ephemeral_by_room=ephemeral_by_room,
-                        tags_by_room=tags_by_room,
-                        account_data_by_room=account_data_by_room,
-                    )
-                    room_sync_deferred.addCallback(joined.append)
-                    deferreds.append(room_sync_deferred)
-                elif event.membership == Membership.INVITE:
-                    invite = yield self.store.get_event(event.event_id)
-                    invited.append(InvitedSyncResult(
-                        room_id=event.room_id,
-                        invite=invite,
-                    ))
-                elif event.membership in (Membership.LEAVE, Membership.BAN):
-                    # Always send down rooms we were banned or kicked from.
-                    if not sync_config.filter_collection.include_leave:
-                        if event.membership == Membership.LEAVE:
-                            if sync_config.user.to_string() == event.sender:
-                                continue
-
-                    leave_token = now_token.copy_and_replace(
-                        "room_key", "s%d" % (event.stream_ordering,)
-                    )
-                    room_sync_deferred = preserve_fn(
-                        self.full_state_sync_for_archived_room
-                    )(
-                        sync_config=sync_config,
-                        room_id=event.room_id,
-                        leave_event_id=event.event_id,
-                        leave_token=leave_token,
-                        timeline_since_token=timeline_since_token,
-                        tags_by_room=tags_by_room,
-                        account_data_by_room=account_data_by_room,
-                    )
-                    room_sync_deferred.addCallback(archived.append)
-                    deferreds.append(room_sync_deferred)
 
-            yield defer.gatherResults(
-                deferreds, consumeErrors=True
-            ).addErrback(unwrapFirstError)
+        user_id = sync_config.user.to_string()
+
+        @defer.inlineCallbacks
+        def _generate_room_entry(event):
+            if event.membership == Membership.JOIN:
+                room_result = yield self.full_state_sync_for_joined_room(
+                    room_id=event.room_id,
+                    sync_config=sync_config,
+                    now_token=now_token,
+                    timeline_since_token=timeline_since_token,
+                    ephemeral_by_room=ephemeral_by_room,
+                    tags_by_room=tags_by_room,
+                    account_data_by_room=account_data_by_room,
+                )
+                joined.append(room_result)
+            elif event.membership == Membership.INVITE:
+                invite = yield self.store.get_event(event.event_id)
+                invited.append(InvitedSyncResult(
+                    room_id=event.room_id,
+                    invite=invite,
+                ))
+            elif event.membership in (Membership.LEAVE, Membership.BAN):
+                # Always send down rooms we were banned or kicked from.
+                if not sync_config.filter_collection.include_leave:
+                    if event.membership == Membership.LEAVE:
+                        if user_id == event.sender:
+                            return
+
+                leave_token = now_token.copy_and_replace(
+                    "room_key", "s%d" % (event.stream_ordering,)
+                )
+                room_result = yield self.full_state_sync_for_archived_room(
+                    sync_config=sync_config,
+                    room_id=event.room_id,
+                    leave_event_id=event.event_id,
+                    leave_token=leave_token,
+                    timeline_since_token=timeline_since_token,
+                    tags_by_room=tags_by_room,
+                    account_data_by_room=account_data_by_room,
+                )
+                archived.append(room_result)
+
+        yield concurrently_execute(_generate_room_entry, room_list, 10)
 
         account_data_for_user = sync_config.filter_collection.filter_account_data(
             self.account_data_for_user(account_data)