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# Copyright 2016 OpenMarket Ltd
#
# 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, Any, Iterable
from synapse.replication.slave.storage._base import BaseSlavedStore
from synapse.replication.slave.storage._slaved_id_tracker import SlavedIdTracker
from synapse.replication.tcp.streams._base import DeviceListsStream, UserSignatureStream
from synapse.storage.database import DatabasePool, LoggingDatabaseConnection
from synapse.storage.databases.main.devices import DeviceWorkerStore
from synapse.storage.databases.main.end_to_end_keys import EndToEndKeyWorkerStore
from synapse.util.caches.stream_change_cache import StreamChangeCache
if TYPE_CHECKING:
from synapse.server import HomeServer
class SlavedDeviceStore(EndToEndKeyWorkerStore, DeviceWorkerStore, BaseSlavedStore):
def __init__(
self,
database: DatabasePool,
db_conn: LoggingDatabaseConnection,
hs: "HomeServer",
):
super().__init__(database, db_conn, hs)
self.hs = hs
self._device_list_id_gen = SlavedIdTracker(
db_conn,
"device_lists_stream",
"stream_id",
extra_tables=[
("user_signature_stream", "stream_id"),
("device_lists_outbound_pokes", "stream_id"),
("device_lists_changes_in_room", "stream_id"),
],
)
device_list_max = self._device_list_id_gen.get_current_token()
device_list_prefill, min_device_list_id = self.db_pool.get_cache_dict(
db_conn,
"device_lists_stream",
entity_column="user_id",
stream_column="stream_id",
max_value=device_list_max,
limit=1000,
)
self._device_list_stream_cache = StreamChangeCache(
"DeviceListStreamChangeCache",
min_device_list_id,
prefilled_cache=device_list_prefill,
)
self._user_signature_stream_cache = StreamChangeCache(
"UserSignatureStreamChangeCache", device_list_max
)
self._device_list_federation_stream_cache = StreamChangeCache(
"DeviceListFederationStreamChangeCache", device_list_max
)
def get_device_stream_token(self) -> int:
return self._device_list_id_gen.get_current_token()
def process_replication_rows(
self, stream_name: str, instance_name: str, token: int, rows: Iterable[Any]
) -> None:
if stream_name == DeviceListsStream.NAME:
self._device_list_id_gen.advance(instance_name, token)
self._invalidate_caches_for_devices(token, rows)
elif stream_name == UserSignatureStream.NAME:
self._device_list_id_gen.advance(instance_name, token)
for row in rows:
self._user_signature_stream_cache.entity_has_changed(row.user_id, token)
return super().process_replication_rows(stream_name, instance_name, token, rows)
def _invalidate_caches_for_devices(
self, token: int, rows: Iterable[DeviceListsStream.DeviceListsStreamRow]
) -> None:
for row in rows:
# The entities are either user IDs (starting with '@') whose devices
# have changed, or remote servers that we need to tell about
# changes.
if row.entity.startswith("@"):
self._device_list_stream_cache.entity_has_changed(row.entity, token)
self.get_cached_devices_for_user.invalidate((row.entity,))
self._get_cached_user_device.invalidate((row.entity,))
self.get_device_list_last_stream_id_for_remote.invalidate((row.entity,))
else:
self._device_list_federation_stream_cache.entity_has_changed(
row.entity, token
)
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