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-rw-r--r--synapse/handlers/_base.py10
-rw-r--r--synapse/handlers/events.py11
-rw-r--r--synapse/handlers/federation.py50
-rw-r--r--synapse/handlers/presence.py20
-rw-r--r--synapse/handlers/register.py2
-rw-r--r--synapse/handlers/room.py11
-rw-r--r--synapse/handlers/sync.py40
7 files changed, 57 insertions, 87 deletions
diff --git a/synapse/handlers/_base.py b/synapse/handlers/_base.py
index 1423df6cf3..fa83d3e464 100644
--- a/synapse/handlers/_base.py
+++ b/synapse/handlers/_base.py
@@ -293,19 +293,11 @@ class BaseHandler(object):
 
         with PreserveLoggingContext():
             # Don't block waiting on waking up all the listeners.
-            notify_d = self.notifier.on_new_room_event(
+            self.notifier.on_new_room_event(
                 event, event_stream_id, max_stream_id,
                 extra_users=extra_users
             )
 
-        def log_failure(f):
-            logger.warn(
-                "Failed to notify about %s: %s",
-                event.event_id, f.value
-            )
-
-        notify_d.addErrback(log_failure)
-
         # If invite, remove room_state from unsigned before sending.
         event.unsigned.pop("invite_room_state", None)
 
diff --git a/synapse/handlers/events.py b/synapse/handlers/events.py
index 5ad8f3779a..4933c31c19 100644
--- a/synapse/handlers/events.py
+++ b/synapse/handlers/events.py
@@ -18,6 +18,7 @@ from twisted.internet import defer
 from synapse.util.logutils import log_function
 from synapse.types import UserID
 from synapse.events.utils import serialize_event
+from synapse.util.logcontext import preserve_context_over_fn
 
 from ._base import BaseHandler
 
@@ -29,11 +30,17 @@ logger = logging.getLogger(__name__)
 
 
 def started_user_eventstream(distributor, user):
-    return distributor.fire("started_user_eventstream", user)
+    return preserve_context_over_fn(
+        distributor.fire,
+        "started_user_eventstream", user
+    )
 
 
 def stopped_user_eventstream(distributor, user):
-    return distributor.fire("stopped_user_eventstream", user)
+    return preserve_context_over_fn(
+        distributor.fire,
+        "stopped_user_eventstream", user
+    )
 
 
 class EventStreamHandler(BaseHandler):
diff --git a/synapse/handlers/federation.py b/synapse/handlers/federation.py
index 2ce1e9d6c7..b78b0502d9 100644
--- a/synapse/handlers/federation.py
+++ b/synapse/handlers/federation.py
@@ -221,19 +221,11 @@ class FederationHandler(BaseHandler):
                 extra_users.append(target_user)
 
             with PreserveLoggingContext():
-                d = self.notifier.on_new_room_event(
+                self.notifier.on_new_room_event(
                     event, event_stream_id, max_stream_id,
                     extra_users=extra_users
                 )
 
-            def log_failure(f):
-                logger.warn(
-                    "Failed to notify about %s: %s",
-                    event.event_id, f.value
-                )
-
-            d.addErrback(log_failure)
-
         if event.type == EventTypes.Member:
             if event.membership == Membership.JOIN:
                 prev_state = context.current_state.get((event.type, event.state_key))
@@ -643,19 +635,11 @@ class FederationHandler(BaseHandler):
             )
 
             with PreserveLoggingContext():
-                d = self.notifier.on_new_room_event(
+                self.notifier.on_new_room_event(
                     event, event_stream_id, max_stream_id,
                     extra_users=[joinee]
                 )
 
-            def log_failure(f):
-                logger.warn(
-                    "Failed to notify about %s: %s",
-                    event.event_id, f.value
-                )
-
-            d.addErrback(log_failure)
-
             logger.debug("Finished joining %s to %s", joinee, room_id)
         finally:
             room_queue = self.room_queues[room_id]
@@ -730,18 +714,10 @@ class FederationHandler(BaseHandler):
             extra_users.append(target_user)
 
         with PreserveLoggingContext():
-            d = self.notifier.on_new_room_event(
+            self.notifier.on_new_room_event(
                 event, event_stream_id, max_stream_id, extra_users=extra_users
             )
 
-        def log_failure(f):
-            logger.warn(
-                "Failed to notify about %s: %s",
-                event.event_id, f.value
-            )
-
-        d.addErrback(log_failure)
-
         if event.type == EventTypes.Member:
             if event.content["membership"] == Membership.JOIN:
                 user = UserID.from_string(event.state_key)
@@ -811,19 +787,11 @@ class FederationHandler(BaseHandler):
 
         target_user = UserID.from_string(event.state_key)
         with PreserveLoggingContext():
-            d = self.notifier.on_new_room_event(
+            self.notifier.on_new_room_event(
                 event, event_stream_id, max_stream_id,
                 extra_users=[target_user],
             )
 
-        def log_failure(f):
-            logger.warn(
-                "Failed to notify about %s: %s",
-                event.event_id, f.value
-            )
-
-        d.addErrback(log_failure)
-
         defer.returnValue(event)
 
     @defer.inlineCallbacks
@@ -948,18 +916,10 @@ class FederationHandler(BaseHandler):
             extra_users.append(target_user)
 
         with PreserveLoggingContext():
-            d = self.notifier.on_new_room_event(
+            self.notifier.on_new_room_event(
                 event, event_stream_id, max_stream_id, extra_users=extra_users
             )
 
-        def log_failure(f):
-            logger.warn(
-                "Failed to notify about %s: %s",
-                event.event_id, f.value
-            )
-
-        d.addErrback(log_failure)
-
         new_pdu = event
 
         destinations = set()
diff --git a/synapse/handlers/presence.py b/synapse/handlers/presence.py
index d0c21ff5c9..b61394f2b5 100644
--- a/synapse/handlers/presence.py
+++ b/synapse/handlers/presence.py
@@ -378,9 +378,9 @@ class PresenceHandler(BaseHandler):
         was_polling = target_user in self._user_cachemap
 
         if now_online and not was_polling:
-            self.start_polling_presence(target_user, state=state)
+            yield self.start_polling_presence(target_user, state=state)
         elif not now_online and was_polling:
-            self.stop_polling_presence(target_user)
+            yield self.stop_polling_presence(target_user)
 
         # TODO(paul): perform a presence push as part of start/stop poll so
         #   we don't have to do this all the time
@@ -394,7 +394,8 @@ class PresenceHandler(BaseHandler):
         if now - prev_state.state.get("last_active", 0) < LAST_ACTIVE_GRANULARITY:
             return
 
-        self.changed_presencelike_data(user, {"last_active": now})
+        with PreserveLoggingContext():
+            self.changed_presencelike_data(user, {"last_active": now})
 
     def get_joined_rooms_for_user(self, user):
         """Get the list of rooms a user is joined to.
@@ -466,11 +467,12 @@ class PresenceHandler(BaseHandler):
                 local_user, room_ids=[room_id], add_to_cache=False
             )
 
-            self.push_update_to_local_and_remote(
-                observed_user=local_user,
-                users_to_push=[user],
-                statuscache=statuscache,
-            )
+            with PreserveLoggingContext():
+                self.push_update_to_local_and_remote(
+                    observed_user=local_user,
+                    users_to_push=[user],
+                    statuscache=statuscache,
+                )
 
     @defer.inlineCallbacks
     def send_presence_invite(self, observer_user, observed_user):
@@ -556,7 +558,7 @@ class PresenceHandler(BaseHandler):
             observer_user.localpart, observed_user.to_string()
         )
 
-        self.start_polling_presence(
+        yield self.start_polling_presence(
             observer_user, target_user=observed_user
         )
 
diff --git a/synapse/handlers/register.py b/synapse/handlers/register.py
index 2660fd21a2..24c850ae9b 100644
--- a/synapse/handlers/register.py
+++ b/synapse/handlers/register.py
@@ -186,7 +186,7 @@ class RegistrationHandler(BaseHandler):
             token=token,
             password_hash=""
         )
-        registered_user(self.distributor, user)
+        yield registered_user(self.distributor, user)
         defer.returnValue((user_id, token))
 
     @defer.inlineCallbacks
diff --git a/synapse/handlers/room.py b/synapse/handlers/room.py
index bfd7e44e9f..a8e3a9029c 100644
--- a/synapse/handlers/room.py
+++ b/synapse/handlers/room.py
@@ -25,6 +25,7 @@ from synapse.api.constants import (
 from synapse.api.errors import AuthError, StoreError, SynapseError, Codes
 from synapse.util import stringutils, unwrapFirstError
 from synapse.util.async import run_on_reactor
+from synapse.util.logcontext import preserve_context_over_fn
 
 from signedjson.sign import verify_signed_json
 from signedjson.key import decode_verify_key_bytes
@@ -46,11 +47,17 @@ def collect_presencelike_data(distributor, user, content):
 
 
 def user_left_room(distributor, user, room_id):
-    return distributor.fire("user_left_room", user=user, room_id=room_id)
+    return preserve_context_over_fn(
+        distributor.fire,
+        "user_left_room", user=user, room_id=room_id
+    )
 
 
 def user_joined_room(distributor, user, room_id):
-    return distributor.fire("user_joined_room", user=user, room_id=room_id)
+    return preserve_context_over_fn(
+        distributor.fire,
+        "user_joined_room", user=user, room_id=room_id
+    )
 
 
 class RoomCreationHandler(BaseHandler):
diff --git a/synapse/handlers/sync.py b/synapse/handlers/sync.py
index 72271f2626..3f1cda5b0b 100644
--- a/synapse/handlers/sync.py
+++ b/synapse/handlers/sync.py
@@ -18,7 +18,7 @@ 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
+from synapse.util.logcontext import LoggingContext, PreserveLoggingContext
 
 from twisted.internet import defer
 
@@ -241,15 +241,16 @@ class SyncHandler(BaseHandler):
         deferreds = []
         for event in room_list:
             if event.membership == Membership.JOIN:
-                room_sync_deferred = 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,
-                )
+                with PreserveLoggingContext(LoggingContext.current_context()):
+                    room_sync_deferred = 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:
@@ -262,15 +263,16 @@ class SyncHandler(BaseHandler):
                 leave_token = now_token.copy_and_replace(
                     "room_key", "s%d" % (event.stream_ordering,)
                 )
-                room_sync_deferred = 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,
-                )
+                with PreserveLoggingContext(LoggingContext.current_context()):
+                    room_sync_deferred = 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)