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-rw-r--r--synapse/federation/federation_client.py20
1 files changed, 6 insertions, 14 deletions
diff --git a/synapse/federation/federation_client.py b/synapse/federation/federation_client.py
index 71809893c5..be3bb59431 100644
--- a/synapse/federation/federation_client.py
+++ b/synapse/federation/federation_client.py
@@ -37,8 +37,7 @@ from synapse.api.errors import (
     HttpResponseException,
     SynapseError,
 )
-from synapse.crypto.event_signing import add_hashes_and_signatures
-from synapse.events import room_version_to_event_format
+from synapse.events import builder, room_version_to_event_format
 from synapse.federation.federation_base import FederationBase, event_from_pdu_json
 from synapse.util import logcontext, unwrapFirstError
 from synapse.util.caches.expiringcache import ExpiringCache
@@ -72,7 +71,8 @@ class FederationClient(FederationBase):
         self.state = hs.get_state_handler()
         self.transport_layer = hs.get_federation_transport_client()
 
-        self.event_builder_factory = hs.get_event_builder_factory()
+        self.hostname = hs.hostname
+        self.signing_key = hs.config.signing_key[0]
 
         self._get_pdu_cache = ExpiringCache(
             cache_name="get_pdu_cache",
@@ -608,18 +608,10 @@ class FederationClient(FederationBase):
             if "prev_state" not in pdu_dict:
                 pdu_dict["prev_state"] = []
 
-            # Strip off the fields that we want to clobber.
-            pdu_dict.pop("origin", None)
-            pdu_dict.pop("origin_server_ts", None)
-            pdu_dict.pop("unsigned", None)
-
-            builder = self.event_builder_factory.new(room_version, pdu_dict)
-            add_hashes_and_signatures(
-                builder,
-                self.hs.hostname,
-                self.hs.config.signing_key[0]
+            ev = builder.create_local_event_from_event_dict(
+                self._clock, self.hostname, self.signing_key,
+                format_version=event_format, event_dict=pdu_dict,
             )
-            ev = builder.build()
 
             defer.returnValue(
                 (destination, ev, event_format)