88 lines
		
	
	
		
			3.9 KiB
		
	
	
	
		
			Python
		
	
	
			
		
		
	
	
			88 lines
		
	
	
		
			3.9 KiB
		
	
	
	
		
			Python
		
	
	
| # -*- coding: utf-8 -*-
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| # Copyright 2016 OpenMarket Ltd
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| #
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| # Licensed under the Apache License, Version 2.0 (the "License");
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| # you may not use this file except in compliance with the License.
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| # You may obtain a copy of the License at
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| #
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| #     http://www.apache.org/licenses/LICENSE-2.0
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| #
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| # Unless required by applicable law or agreed to in writing, software
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| # distributed under the License is distributed on an "AS IS" BASIS,
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| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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| # See the License for the specific language governing permissions and
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| # limitations under the License.
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| 
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| from synapse.replication.slave.storage._base import BaseSlavedStore
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| from synapse.replication.slave.storage._slaved_id_tracker import SlavedIdTracker
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| from synapse.replication.tcp.streams._base import DeviceListsStream, UserSignatureStream
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| from synapse.storage.data_stores.main.devices import DeviceWorkerStore
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| from synapse.storage.data_stores.main.end_to_end_keys import EndToEndKeyWorkerStore
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| from synapse.storage.database import Database
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| from synapse.util.caches.stream_change_cache import StreamChangeCache
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| 
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| 
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| class SlavedDeviceStore(EndToEndKeyWorkerStore, DeviceWorkerStore, BaseSlavedStore):
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|     def __init__(self, database: Database, db_conn, hs):
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|         super(SlavedDeviceStore, self).__init__(database, db_conn, hs)
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| 
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|         self.hs = hs
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| 
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|         self._device_list_id_gen = SlavedIdTracker(
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|             db_conn,
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|             "device_lists_stream",
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|             "stream_id",
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|             extra_tables=[
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|                 ("user_signature_stream", "stream_id"),
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|                 ("device_lists_outbound_pokes", "stream_id"),
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|             ],
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|         )
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|         device_list_max = self._device_list_id_gen.get_current_token()
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|         self._device_list_stream_cache = StreamChangeCache(
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|             "DeviceListStreamChangeCache", device_list_max
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|         )
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|         self._user_signature_stream_cache = StreamChangeCache(
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|             "UserSignatureStreamChangeCache", device_list_max
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|         )
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|         self._device_list_federation_stream_cache = StreamChangeCache(
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|             "DeviceListFederationStreamChangeCache", device_list_max
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|         )
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| 
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|     def stream_positions(self):
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|         result = super(SlavedDeviceStore, self).stream_positions()
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|         # The user signature stream uses the same stream ID generator as the
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|         # device list stream, so set them both to the device list ID
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|         # generator's current token.
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|         current_token = self._device_list_id_gen.get_current_token()
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|         result[DeviceListsStream.NAME] = current_token
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|         result[UserSignatureStream.NAME] = current_token
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|         return result
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| 
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|     def process_replication_rows(self, stream_name, token, rows):
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|         if stream_name == DeviceListsStream.NAME:
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|             self._device_list_id_gen.advance(token)
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|             self._invalidate_caches_for_devices(token, rows)
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|         elif stream_name == UserSignatureStream.NAME:
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|             self._device_list_id_gen.advance(token)
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|             for row in rows:
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|                 self._user_signature_stream_cache.entity_has_changed(row.user_id, token)
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|         return super(SlavedDeviceStore, self).process_replication_rows(
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|             stream_name, token, rows
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|         )
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| 
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|     def _invalidate_caches_for_devices(self, token, rows):
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|         for row in rows:
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|             # The entities are either user IDs (starting with '@') whose devices
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|             # have changed, or remote servers that we need to tell about
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|             # changes.
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|             if row.entity.startswith("@"):
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|                 self._device_list_stream_cache.entity_has_changed(row.entity, token)
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|                 self.get_cached_devices_for_user.invalidate((row.entity,))
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|                 self._get_cached_user_device.invalidate_many((row.entity,))
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|                 self.get_device_list_last_stream_id_for_remote.invalidate((row.entity,))
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| 
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|             else:
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|                 self._device_list_federation_stream_cache.entity_has_changed(
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|                     row.entity, token
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|                 )
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