diff --git a/synapse/replication/slave/storage/deviceinbox.py b/synapse/replication/slave/storage/deviceinbox.py
index 62b68dd6e9..1260f6d141 100644
--- a/synapse/replication/slave/storage/deviceinbox.py
+++ b/synapse/replication/slave/storage/deviceinbox.py
@@ -14,38 +14,8 @@
# limitations under the License.
from synapse.replication.slave.storage._base import BaseSlavedStore
-from synapse.replication.slave.storage._slaved_id_tracker import SlavedIdTracker
-from synapse.replication.tcp.streams import ToDeviceStream
-from synapse.storage.database import DatabasePool
from synapse.storage.databases.main.deviceinbox import DeviceInboxWorkerStore
-from synapse.util.caches.stream_change_cache import StreamChangeCache
class SlavedDeviceInboxStore(DeviceInboxWorkerStore, BaseSlavedStore):
- def __init__(self, database: DatabasePool, db_conn, hs):
- super().__init__(database, db_conn, hs)
- self._device_inbox_id_gen = SlavedIdTracker(
- db_conn, "device_inbox", "stream_id"
- )
- self._device_inbox_stream_cache = StreamChangeCache(
- "DeviceInboxStreamChangeCache",
- self._device_inbox_id_gen.get_current_token(),
- )
- self._device_federation_outbox_stream_cache = StreamChangeCache(
- "DeviceFederationOutboxStreamChangeCache",
- self._device_inbox_id_gen.get_current_token(),
- )
-
- def process_replication_rows(self, stream_name, instance_name, token, rows):
- if stream_name == ToDeviceStream.NAME:
- self._device_inbox_id_gen.advance(instance_name, token)
- for row in rows:
- if row.entity.startswith("@"):
- self._device_inbox_stream_cache.entity_has_changed(
- row.entity, token
- )
- else:
- self._device_federation_outbox_stream_cache.entity_has_changed(
- row.entity, token
- )
- return super().process_replication_rows(stream_name, instance_name, token, rows)
+ pass
diff --git a/synapse/replication/tcp/handler.py b/synapse/replication/tcp/handler.py
index 95e5502bf2..1f89249475 100644
--- a/synapse/replication/tcp/handler.py
+++ b/synapse/replication/tcp/handler.py
@@ -56,6 +56,7 @@ from synapse.replication.tcp.streams import (
EventsStream,
FederationStream,
Stream,
+ ToDeviceStream,
TypingStream,
)
@@ -115,6 +116,14 @@ class ReplicationCommandHandler:
continue
+ if isinstance(stream, ToDeviceStream):
+ # Only add ToDeviceStream as a source on instances in charge of
+ # sending to device messages.
+ if hs.get_instance_name() in hs.config.worker.writers.to_device:
+ self._streams_to_replicate.append(stream)
+
+ continue
+
if isinstance(stream, TypingStream):
# Only add TypingStream as a source on the instance in charge of
# typing.
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