Add and use get_domian_from_id

1 files changed, 4 insertions, 8 deletions

diff --git a/synapse/handlers/federation.py b/synapse/handlers/federation.py

index d95e0b23b1..f38c6a8713 100644
--- a/synapse/handlers/federation.py
+++ b/synapse/handlers/federation.py
@@ -33,7 +33,7 @@ from synapse.util.frozenutils import unfreeze
 from synapse.crypto.event_signing import (
     compute_event_signature, add_hashes_and_signatures,
 )
-from synapse.types import UserID
+from synapse.types import UserID, get_domian_from_id
 
 from synapse.events.utils import prune_event
 
@@ -453,7 +453,7 @@ class FederationHandler(BaseHandler):
             joined_domains = {}
             for u, d in joined_users:
                 try:
-                    dom = UserID.from_string(u).domain
+                    dom = get_domian_from_id(u)
                     old_d = joined_domains.get(dom)
                     if old_d:
                         joined_domains[dom] = min(d, old_d)
@@ -743,9 +743,7 @@ class FederationHandler(BaseHandler):
             try:
                 if k[0] == EventTypes.Member:
                     if s.content["membership"] == Membership.JOIN:
-                        destinations.add(
-                            UserID.from_string(s.state_key).domain
-                        )
+                        destinations.add(get_domian_from_id(s.state_key))
             except:
                 logger.warn(
                     "Failed to get destination from event %s", s.event_id
@@ -970,9 +968,7 @@ class FederationHandler(BaseHandler):
             try:
                 if k[0] == EventTypes.Member:
                     if s.content["membership"] == Membership.LEAVE:
-                        destinations.add(
-                            UserID.from_string(s.state_key).domain
-                        )
+                        destinations.add(get_domian_from_id(s.state_key))
             except:
                 logger.warn(
                     "Failed to get destination from event %s", s.event_id