1 files changed, 48 insertions, 0 deletions
diff --git a/synapse/replication/tcp/streams/partial_state.py b/synapse/replication/tcp/streams/partial_state.py
new file mode 100644
index 0000000000..18f087ffa2
--- /dev/null
+++ b/synapse/replication/tcp/streams/partial_state.py
@@ -0,0 +1,48 @@
+# Copyright 2022 The Matrix.org Foundation C.I.C.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+from typing import TYPE_CHECKING
+
+import attr
+
+from synapse.replication.tcp.streams import Stream
+from synapse.replication.tcp.streams._base import current_token_without_instance
+
+if TYPE_CHECKING:
+ from synapse.server import HomeServer
+
+
+@attr.s(slots=True, frozen=True, auto_attribs=True)
+class UnPartialStatedRoomStreamRow:
+ # ID of the room that has been un-partial-stated.
+ room_id: str
+
+
+class UnPartialStatedRoomStream(Stream):
+ """
+ Stream to notify about rooms becoming un-partial-stated;
+ that is, when the background sync finishes such that we now have full state for
+ the room.
+ """
+
+ NAME = "un_partial_stated_room"
+ ROW_TYPE = UnPartialStatedRoomStreamRow
+
+ def __init__(self, hs: "HomeServer"):
+ store = hs.get_datastores().main
+ super().__init__(
+ hs.get_instance_name(),
+ # TODO(faster_joins, multiple writers): we need to account for instance names
+ current_token_without_instance(store.get_un_partial_stated_rooms_token),
+ store.get_un_partial_stated_rooms_from_stream,
+ )
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