diff --git a/synapse/storage/data_stores/main/__init__.py b/synapse/storage/data_stores/main/__init__.py
index 60ae01d972..10c940df1e 100644
--- a/synapse/storage/data_stores/main/__init__.py
+++ b/synapse/storage/data_stores/main/__init__.py
@@ -139,7 +139,10 @@ class DataStore(
db_conn, "public_room_list_stream", "stream_id"
)
self._device_list_id_gen = StreamIdGenerator(
- db_conn, "device_lists_stream", "stream_id"
+ db_conn,
+ "device_lists_stream",
+ "stream_id",
+ extra_tables=[("user_signature_stream", "stream_id")],
)
self._cross_signing_id_gen = StreamIdGenerator(
db_conn, "e2e_cross_signing_keys", "stream_id"
diff --git a/synapse/storage/data_stores/main/end_to_end_keys.py b/synapse/storage/data_stores/main/end_to_end_keys.py
index a0bc6f2d18..073412a78d 100644
--- a/synapse/storage/data_stores/main/end_to_end_keys.py
+++ b/synapse/storage/data_stores/main/end_to_end_keys.py
@@ -315,6 +315,30 @@ class EndToEndKeyWorkerStore(SQLBaseStore):
from_user_id,
)
+ def get_all_user_signature_changes_for_remotes(self, from_key, to_key):
+ """Return a list of changes from the user signature stream to notify remotes.
+ Note that the user signature stream represents when a user signs their
+ device with their user-signing key, which is not published to other
+ users or servers, so no `destination` is needed in the returned
+ list. However, this is needed to poke workers.
+
+ Args:
+ from_key (int): the stream ID to start at (exclusive)
+ to_key (int): the stream ID to end at (inclusive)
+
+ Returns:
+ Deferred[list[(int,str)]] a list of `(stream_id, user_id)`
+ """
+ sql = """
+ SELECT MAX(stream_id) AS stream_id, from_user_id AS user_id
+ FROM user_signature_stream
+ WHERE ? < stream_id AND stream_id <= ?
+ GROUP BY user_id
+ """
+ return self._execute(
+ "get_all_user_signature_changes_for_remotes", None, sql, from_key, to_key
+ )
+
class EndToEndKeyStore(EndToEndKeyWorkerStore, SQLBaseStore):
def set_e2e_device_keys(self, user_id, device_id, time_now, device_keys):
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