Use consumeErrors=True on all DeferredLists.

This is so that the DeferredLists actually consume the error instead of
propogating down the non-existent errback chain. This should reduce the
number of unhandled errors we are seeing.

synapse/federation/federation_server.py

@@ -124,7 +124,7 @@ class FederationServer(FederationBase):
                         edu.content
                     )
 
-            results = yield defer.DeferredList(dl)
+            results = yield defer.DeferredList(dl, consumeErrors=True)
 
         ret = []
         for r in results:

synapse/federation/transaction_queue.py

@@ -98,7 +98,7 @@ class TransactionQueue(object):
 
             deferreds.append(deferred)
 
-        yield defer.DeferredList(deferreds)
+        yield defer.DeferredList(deferreds, consumeErrors=True)
 
     # NO inlineCallbacks
     def enqueue_edu(self, edu):

synapse/handlers/presence.py

@@ -492,7 +492,7 @@ class PresenceHandler(BaseHandler):
                 user, domain, remoteusers
             ))
 
-        yield defer.DeferredList(deferreds)
+        yield defer.DeferredList(deferreds, consumeErrors=True)
 
     def _start_polling_local(self, user, target_user):
         target_localpart = target_user.localpart
@@ -548,7 +548,7 @@ class PresenceHandler(BaseHandler):
                 self._stop_polling_remote(user, domain, remoteusers)
             )
 
-        return defer.DeferredList(deferreds)
+        return defer.DeferredList(deferreds, consumeErrors=True)
 
     def _stop_polling_local(self, user, target_user):
         for localpart in self._local_pushmap.keys():
@@ -729,7 +729,7 @@ class PresenceHandler(BaseHandler):
                     del self._remote_sendmap[user]
 
         with PreserveLoggingContext():
-            yield defer.DeferredList(deferreds)
+            yield defer.DeferredList(deferreds, consumeErrors=True)
 
     @defer.inlineCallbacks
     def push_update_to_local_and_remote(self, observed_user, statuscache,
@@ -768,7 +768,7 @@ class PresenceHandler(BaseHandler):
                 )
             )
 
-        yield defer.DeferredList(deferreds)
+        yield defer.DeferredList(deferreds, consumeErrors=True)
 
         defer.returnValue((localusers, remote_domains))
 

synapse/notifier.py

@@ -135,7 +135,8 @@ class Notifier(object):
 
         with PreserveLoggingContext():
             yield defer.DeferredList(
-                [notify(l).addErrback(eb) for l in listeners]
+                [notify(l).addErrback(eb) for l in listeners],
+                consumeErrors=True,
             )
 
     @defer.inlineCallbacks
@@ -203,7 +204,8 @@ class Notifier(object):
 
         with PreserveLoggingContext():
             yield defer.DeferredList(
-                [notify(l).addErrback(eb) for l in listeners]
+                [notify(l).addErrback(eb) for l in listeners],
+                consumeErrors=True,
             )
 
     @defer.inlineCallbacks

synapse/storage/roommember.py

@@ -288,7 +288,7 @@ class RoomMemberStore(SQLBaseStore):
 
         deferreds = [self.get_rooms_for_user(u) for u in user_id_list]
 
-        results = yield defer.DeferredList(deferreds)
+        results = yield defer.DeferredList(deferreds, consumeErrors=True)
 
         # A list of sets of strings giving room IDs for each user
         room_id_lists = [set([r.room_id for r in result[1]]) for result in results]