714 lines
27 KiB
Python
714 lines
27 KiB
Python
# 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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import logging
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from typing import Collection, Dict, Iterable, List, Optional, Tuple
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from synapse.appservice import ApplicationService
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from synapse.logging import issue9533_logger
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from synapse.logging.opentracing import log_kv, set_tag, trace
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from synapse.replication.tcp.streams import ToDeviceStream
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from synapse.storage._base import SQLBaseStore, db_to_json
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from synapse.storage.database import DatabasePool, make_in_list_sql_clause
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from synapse.storage.engines import PostgresEngine
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from synapse.storage.util.id_generators import MultiWriterIdGenerator, StreamIdGenerator
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from synapse.types import JsonDict
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from synapse.util import json_encoder
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from synapse.util.caches.expiringcache import ExpiringCache
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from synapse.util.caches.stream_change_cache import StreamChangeCache
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logger = logging.getLogger(__name__)
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class DeviceInboxWorkerStore(SQLBaseStore):
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def __init__(self, database: DatabasePool, db_conn, hs):
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super().__init__(database, db_conn, hs)
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self._instance_name = hs.get_instance_name()
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# Map of (user_id, device_id) to the last stream_id that has been
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# deleted up to. This is so that we can no op deletions.
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self._last_device_delete_cache = ExpiringCache(
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cache_name="last_device_delete_cache",
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clock=self._clock,
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max_len=10000,
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expiry_ms=30 * 60 * 1000,
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)
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if isinstance(database.engine, PostgresEngine):
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self._can_write_to_device = (
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self._instance_name in hs.config.worker.writers.to_device
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)
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self._device_inbox_id_gen = MultiWriterIdGenerator(
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db_conn=db_conn,
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db=database,
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stream_name="to_device",
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instance_name=self._instance_name,
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tables=[("device_inbox", "instance_name", "stream_id")],
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sequence_name="device_inbox_sequence",
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writers=hs.config.worker.writers.to_device,
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)
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else:
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self._can_write_to_device = True
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self._device_inbox_id_gen = StreamIdGenerator(
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db_conn, "device_inbox", "stream_id"
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)
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max_device_inbox_id = self._device_inbox_id_gen.get_current_token()
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device_inbox_prefill, min_device_inbox_id = self.db_pool.get_cache_dict(
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db_conn,
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"device_inbox",
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entity_column="user_id",
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stream_column="stream_id",
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max_value=max_device_inbox_id,
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limit=1000,
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)
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self._device_inbox_stream_cache = StreamChangeCache(
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"DeviceInboxStreamChangeCache",
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min_device_inbox_id,
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prefilled_cache=device_inbox_prefill,
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)
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# The federation outbox and the local device inbox uses the same
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# stream_id generator.
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device_outbox_prefill, min_device_outbox_id = self.db_pool.get_cache_dict(
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db_conn,
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"device_federation_outbox",
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entity_column="destination",
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stream_column="stream_id",
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max_value=max_device_inbox_id,
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limit=1000,
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)
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self._device_federation_outbox_stream_cache = StreamChangeCache(
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"DeviceFederationOutboxStreamChangeCache",
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min_device_outbox_id,
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prefilled_cache=device_outbox_prefill,
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)
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def process_replication_rows(self, stream_name, instance_name, token, rows):
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if stream_name == ToDeviceStream.NAME:
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self._device_inbox_id_gen.advance(instance_name, token)
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for row in rows:
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if row.entity.startswith("@"):
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self._device_inbox_stream_cache.entity_has_changed(
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row.entity, token
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)
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else:
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self._device_federation_outbox_stream_cache.entity_has_changed(
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row.entity, token
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)
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return super().process_replication_rows(stream_name, instance_name, token, rows)
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def get_to_device_stream_token(self):
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return self._device_inbox_id_gen.get_current_token()
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async def get_new_messages(
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self,
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user_ids: Collection[str],
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from_stream_token: int,
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to_stream_token: int,
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limit: int = 100,
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) -> Tuple[Dict[Tuple[str, str], List[JsonDict]], int]:
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"""
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Retrieve to-device messages for a given set of user IDs.
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Only to-device messages with stream tokens between the given boundaries
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(from < X <= to) are returned.
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Note that multiple messages can have the same stream token. Stream tokens are
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unique to *messages*, but there might be multiple recipients of a message, and
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thus multiple entries in the device_inbox table with the same stream token.
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Args:
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user_ids: The users to retrieve to-device messages for.
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from_stream_token: The lower boundary of stream token to filter with (exclusive).
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to_stream_token: The upper boundary of stream token to filter with (inclusive).
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limit: The maximum number of to-device messages to return.
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Returns:
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A tuple containing the following:
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* A list of to-device messages
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"""
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# Bail out if none of these users have any messages
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for user_id in user_ids:
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if self._device_inbox_stream_cache.has_entity_changed(
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user_id, from_stream_token
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):
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break
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else:
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logger.info("*** Bailing out")
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return {}, to_stream_token
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def get_new_messages_txn(txn):
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# Build a query to select messages from any of the given users that are between
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# the given stream token bounds
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sql = "SELECT stream_id, user_id, device_id, message_json FROM device_inbox"
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# Scope to only the given users. We need to use this method as doing so is
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# different across database engines.
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many_clause_sql, many_clause_args = make_in_list_sql_clause(
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self.database_engine, "user_id", user_ids
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)
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sql += (
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" WHERE %s"
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" AND ? < stream_id AND stream_id <= ?"
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" ORDER BY stream_id ASC"
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" LIMIT ?"
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) % many_clause_sql
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logger.info("*** %s\n\n%s", many_clause_sql, many_clause_args)
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logger.info("*** %s", sql)
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txn.execute(
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sql, (*many_clause_args, from_stream_token, to_stream_token, limit)
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)
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# Create a dictionary of (user ID, device ID) -> list of messages that
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# that device is meant to receive.
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recipient_user_id_device_id_to_messages = {}
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stream_pos = to_stream_token
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total_messages_processed = 0
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for row in txn:
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# Record the last-processed stream position, to return later.
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# Note that we process messages here in order of ascending stream token.
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stream_pos = row[0]
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recipient_user_id = row[1]
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recipient_device_id = row[2]
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message_dict = db_to_json(row[3])
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recipient_user_id_device_id_to_messages.setdefault(
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(recipient_user_id, recipient_device_id), []
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).append(message_dict)
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total_messages_processed += 1
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# This is needed (REVIEW: I think) as you can have multiple rows for a
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# single to-device message (due to multiple recipients).
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if total_messages_processed < limit:
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stream_pos = to_stream_token
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return recipient_user_id_device_id_to_messages, stream_pos
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return await self.db_pool.runInteraction(
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"get_new_messages", get_new_messages_txn
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)
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async def get_new_messages_for_device(
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self,
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user_id: str,
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device_id: Optional[str],
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last_stream_token: int,
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current_stream_token: int,
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limit: int = 100,
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) -> Tuple[List[dict], int]:
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"""
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Args:
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user_id: The recipient user_id.
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device_id: The recipient device_id.
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last_stream_token: The last stream ID checked.
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current_stream_token: The current position of the to device
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message stream.
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limit: The maximum number of messages to retrieve.
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Returns:
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A tuple containing:
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* A list of messages for the device
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* The max stream token of these messages. There may be more to retrieve
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if the given limit was reached.
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"""
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has_changed = self._device_inbox_stream_cache.has_entity_changed(
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user_id, last_stream_token
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)
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if not has_changed:
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return [], current_stream_token
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def get_new_messages_for_device_txn(txn):
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sql = (
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"SELECT stream_id, message_json FROM device_inbox"
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" WHERE user_id = ? AND device_id = ?"
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" AND ? < stream_id AND stream_id <= ?"
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" ORDER BY stream_id ASC"
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" LIMIT ?"
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)
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txn.execute(
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sql,
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(user_id, device_id, last_stream_token, current_stream_token, limit),
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)
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messages = []
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stream_pos = current_stream_token
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for row in txn:
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stream_pos = row[0]
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messages.append(db_to_json(row[1]))
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if len(messages) < limit:
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stream_pos = current_stream_token
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return messages, stream_pos
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return await self.db_pool.runInteraction(
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"get_new_messages_for_device", get_new_messages_for_device_txn
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)
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# TODO: OpenTracing support
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async def delete_messages_for_appservice_users(
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self, service: ApplicationService, users: Iterable[str], up_to_stream_id: int
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) -> int:
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"""
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Delete to-device messages that have been delivered to an application service.
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Only messages
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that are intended for users that the given application service has registered an exclusive
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namespace for will be deleted. If a message is intended for a user, but that user is not
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part of an exclusive namespace registered by the given application service, then that
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message will remain in-tact.
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Args:
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service: The application service to inspect user namespaces of.
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users: The to-device message recipient users to scope to.
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up_to_stream_id: The maximum message stream token to consider, inclusive.
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Returns:
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The number of messages deleted.
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# TODO: Useful now that we skip stream tokens?
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"""
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# TODO: Check cache
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# Filter users based on exclusive namespace
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# Only delete messages for those users up to the stream ID
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# So potentially just a delete_messages_for_users method?
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@trace
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async def delete_messages_for_device(
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self, user_id: str, device_id: Optional[str], up_to_stream_id: int
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) -> int:
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"""
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Args:
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user_id: The recipient user_id.
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device_id: The recipient device_id.
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up_to_stream_id: Where to delete messages up to, inclusive.
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Returns:
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The number of messages deleted.
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"""
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# If we have cached the last stream id we've deleted up to, we can
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# check if there is likely to be anything that needs deleting
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last_deleted_stream_id = self._last_device_delete_cache.get(
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(user_id, device_id), None
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)
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set_tag("last_deleted_stream_id", last_deleted_stream_id)
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if last_deleted_stream_id:
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has_changed = self._device_inbox_stream_cache.has_entity_changed(
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user_id, last_deleted_stream_id
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)
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if not has_changed:
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log_kv({"message": "No changes in cache since last check"})
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return 0
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def delete_messages_for_device_txn(txn):
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sql = (
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"DELETE FROM device_inbox"
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" WHERE user_id = ? AND device_id = ?"
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" AND stream_id <= ?"
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)
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txn.execute(sql, (user_id, device_id, up_to_stream_id))
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return txn.rowcount
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count = await self.db_pool.runInteraction(
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"delete_messages_for_device", delete_messages_for_device_txn
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)
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log_kv({"message": f"deleted {count} messages for device", "count": count})
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# Update the cache, ensuring that we only ever increase the value
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last_deleted_stream_id = self._last_device_delete_cache.get(
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(user_id, device_id), 0
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)
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self._last_device_delete_cache[(user_id, device_id)] = max(
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last_deleted_stream_id, up_to_stream_id
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)
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return count
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@trace
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async def get_new_device_msgs_for_remote(
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self, destination, last_stream_id, current_stream_id, limit
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) -> Tuple[List[dict], int]:
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"""
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Args:
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destination(str): The name of the remote server.
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last_stream_id(int|long): The last position of the device message stream
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that the server sent up to.
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current_stream_id(int|long): The current position of the device
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message stream.
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Returns:
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A list of messages for the device and where in the stream the messages got to.
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"""
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set_tag("destination", destination)
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set_tag("last_stream_id", last_stream_id)
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set_tag("current_stream_id", current_stream_id)
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set_tag("limit", limit)
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has_changed = self._device_federation_outbox_stream_cache.has_entity_changed(
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destination, last_stream_id
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)
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if not has_changed or last_stream_id == current_stream_id:
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log_kv({"message": "No new messages in stream"})
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return [], current_stream_id
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if limit <= 0:
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# This can happen if we run out of room for EDUs in the transaction.
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return [], last_stream_id
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@trace
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def get_new_messages_for_remote_destination_txn(txn):
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sql = (
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"SELECT stream_id, messages_json FROM device_federation_outbox"
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" WHERE destination = ?"
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" AND ? < stream_id AND stream_id <= ?"
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" ORDER BY stream_id ASC"
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" LIMIT ?"
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)
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txn.execute(sql, (destination, last_stream_id, current_stream_id, limit))
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messages = []
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for row in txn:
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stream_pos = row[0]
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messages.append(db_to_json(row[1]))
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if len(messages) < limit:
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log_kv({"message": "Set stream position to current position"})
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stream_pos = current_stream_id
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return messages, stream_pos
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return await self.db_pool.runInteraction(
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"get_new_device_msgs_for_remote",
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get_new_messages_for_remote_destination_txn,
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)
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@trace
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async def delete_device_msgs_for_remote(
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self, destination: str, up_to_stream_id: int
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) -> None:
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"""Used to delete messages when the remote destination acknowledges
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their receipt.
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Args:
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destination: The destination server_name
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up_to_stream_id: Where to delete messages up to.
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"""
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def delete_messages_for_remote_destination_txn(txn):
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sql = (
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"DELETE FROM device_federation_outbox"
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" WHERE destination = ?"
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" AND stream_id <= ?"
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)
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txn.execute(sql, (destination, up_to_stream_id))
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await self.db_pool.runInteraction(
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"delete_device_msgs_for_remote", delete_messages_for_remote_destination_txn
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)
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async def get_all_new_device_messages(
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self, instance_name: str, last_id: int, current_id: int, limit: int
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) -> Tuple[List[Tuple[int, tuple]], int, bool]:
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"""Get updates for to device replication stream.
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Args:
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instance_name: The writer we want to fetch updates from. Unused
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here since there is only ever one writer.
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last_id: The token to fetch updates from. Exclusive.
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current_id: The token to fetch updates up to. Inclusive.
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limit: The requested limit for the number of rows to return. The
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function may return more or fewer rows.
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Returns:
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A tuple consisting of: the updates, a token to use to fetch
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subsequent updates, and whether we returned fewer rows than exists
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between the requested tokens due to the limit.
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The token returned can be used in a subsequent call to this
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function to get further updatees.
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The updates are a list of 2-tuples of stream ID and the row data
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"""
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if last_id == current_id:
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return [], current_id, False
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def get_all_new_device_messages_txn(txn):
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# We limit like this as we might have multiple rows per stream_id, and
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# we want to make sure we always get all entries for any stream_id
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# we return.
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upper_pos = min(current_id, last_id + limit)
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sql = (
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"SELECT max(stream_id), user_id"
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" FROM device_inbox"
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" WHERE ? < stream_id AND stream_id <= ?"
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" GROUP BY user_id"
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)
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txn.execute(sql, (last_id, upper_pos))
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updates = [(row[0], row[1:]) for row in txn]
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sql = (
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"SELECT max(stream_id), destination"
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" FROM device_federation_outbox"
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" WHERE ? < stream_id AND stream_id <= ?"
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" GROUP BY destination"
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)
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txn.execute(sql, (last_id, upper_pos))
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updates.extend((row[0], row[1:]) for row in txn)
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# Order by ascending stream ordering
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updates.sort()
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limited = False
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upto_token = current_id
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if len(updates) >= limit:
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upto_token = updates[-1][0]
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limited = True
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return updates, upto_token, limited
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return await self.db_pool.runInteraction(
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"get_all_new_device_messages", get_all_new_device_messages_txn
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)
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@trace
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async def add_messages_to_device_inbox(
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self,
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local_messages_by_user_then_device: dict,
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remote_messages_by_destination: dict,
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) -> int:
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"""Used to send messages from this server.
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Args:
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local_messages_by_user_and_device:
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Dictionary of recipient user_id to recipient device_id to message.
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remote_messages_by_destination:
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|
Dictionary of destination server_name to the EDU JSON to send.
|
|
|
|
Returns:
|
|
The new stream_id.
|
|
"""
|
|
|
|
assert self._can_write_to_device
|
|
|
|
def add_messages_txn(txn, now_ms, stream_id):
|
|
# Add the local messages directly to the local inbox.
|
|
self._add_messages_to_local_device_inbox_txn(
|
|
txn, stream_id, local_messages_by_user_then_device
|
|
)
|
|
|
|
# Add the remote messages to the federation outbox.
|
|
# We'll send them to a remote server when we next send a
|
|
# federation transaction to that destination.
|
|
self.db_pool.simple_insert_many_txn(
|
|
txn,
|
|
table="device_federation_outbox",
|
|
values=[
|
|
{
|
|
"destination": destination,
|
|
"stream_id": stream_id,
|
|
"queued_ts": now_ms,
|
|
"messages_json": json_encoder.encode(edu),
|
|
"instance_name": self._instance_name,
|
|
}
|
|
for destination, edu in remote_messages_by_destination.items()
|
|
],
|
|
)
|
|
|
|
if remote_messages_by_destination:
|
|
issue9533_logger.debug(
|
|
"Queued outgoing to-device messages with stream_id %i for %s",
|
|
stream_id,
|
|
list(remote_messages_by_destination.keys()),
|
|
)
|
|
|
|
async with self._device_inbox_id_gen.get_next() as stream_id:
|
|
now_ms = self.clock.time_msec()
|
|
await self.db_pool.runInteraction(
|
|
"add_messages_to_device_inbox", add_messages_txn, now_ms, stream_id
|
|
)
|
|
for user_id in local_messages_by_user_then_device.keys():
|
|
self._device_inbox_stream_cache.entity_has_changed(user_id, stream_id)
|
|
for destination in remote_messages_by_destination.keys():
|
|
self._device_federation_outbox_stream_cache.entity_has_changed(
|
|
destination, stream_id
|
|
)
|
|
|
|
return self._device_inbox_id_gen.get_current_token()
|
|
|
|
async def add_messages_from_remote_to_device_inbox(
|
|
self, origin: str, message_id: str, local_messages_by_user_then_device: dict
|
|
) -> int:
|
|
assert self._can_write_to_device
|
|
|
|
def add_messages_txn(txn, now_ms, stream_id):
|
|
# Check if we've already inserted a matching message_id for that
|
|
# origin. This can happen if the origin doesn't receive our
|
|
# acknowledgement from the first time we received the message.
|
|
already_inserted = self.db_pool.simple_select_one_txn(
|
|
txn,
|
|
table="device_federation_inbox",
|
|
keyvalues={"origin": origin, "message_id": message_id},
|
|
retcols=("message_id",),
|
|
allow_none=True,
|
|
)
|
|
if already_inserted is not None:
|
|
return
|
|
|
|
# Add an entry for this message_id so that we know we've processed
|
|
# it.
|
|
self.db_pool.simple_insert_txn(
|
|
txn,
|
|
table="device_federation_inbox",
|
|
values={
|
|
"origin": origin,
|
|
"message_id": message_id,
|
|
"received_ts": now_ms,
|
|
},
|
|
)
|
|
|
|
# Add the messages to the appropriate local device inboxes so that
|
|
# they'll be sent to the devices when they next sync.
|
|
self._add_messages_to_local_device_inbox_txn(
|
|
txn, stream_id, local_messages_by_user_then_device
|
|
)
|
|
|
|
async with self._device_inbox_id_gen.get_next() as stream_id:
|
|
now_ms = self.clock.time_msec()
|
|
await self.db_pool.runInteraction(
|
|
"add_messages_from_remote_to_device_inbox",
|
|
add_messages_txn,
|
|
now_ms,
|
|
stream_id,
|
|
)
|
|
for user_id in local_messages_by_user_then_device.keys():
|
|
self._device_inbox_stream_cache.entity_has_changed(user_id, stream_id)
|
|
|
|
return stream_id
|
|
|
|
def _add_messages_to_local_device_inbox_txn(
|
|
self, txn, stream_id, messages_by_user_then_device
|
|
):
|
|
assert self._can_write_to_device
|
|
|
|
local_by_user_then_device = {}
|
|
for user_id, messages_by_device in messages_by_user_then_device.items():
|
|
messages_json_for_user = {}
|
|
devices = list(messages_by_device.keys())
|
|
if len(devices) == 1 and devices[0] == "*":
|
|
# Handle wildcard device_ids.
|
|
devices = self.db_pool.simple_select_onecol_txn(
|
|
txn,
|
|
table="devices",
|
|
keyvalues={"user_id": user_id},
|
|
retcol="device_id",
|
|
)
|
|
|
|
message_json = json_encoder.encode(messages_by_device["*"])
|
|
for device_id in devices:
|
|
# Add the message for all devices for this user on this
|
|
# server.
|
|
messages_json_for_user[device_id] = message_json
|
|
else:
|
|
if not devices:
|
|
continue
|
|
|
|
rows = self.db_pool.simple_select_many_txn(
|
|
txn,
|
|
table="devices",
|
|
keyvalues={"user_id": user_id},
|
|
column="device_id",
|
|
iterable=devices,
|
|
retcols=("device_id",),
|
|
)
|
|
|
|
for row in rows:
|
|
# Only insert into the local inbox if the device exists on
|
|
# this server
|
|
device_id = row["device_id"]
|
|
message_json = json_encoder.encode(messages_by_device[device_id])
|
|
messages_json_for_user[device_id] = message_json
|
|
|
|
if messages_json_for_user:
|
|
local_by_user_then_device[user_id] = messages_json_for_user
|
|
|
|
if not local_by_user_then_device:
|
|
return
|
|
|
|
self.db_pool.simple_insert_many_txn(
|
|
txn,
|
|
table="device_inbox",
|
|
values=[
|
|
{
|
|
"user_id": user_id,
|
|
"device_id": device_id,
|
|
"stream_id": stream_id,
|
|
"message_json": message_json,
|
|
"instance_name": self._instance_name,
|
|
}
|
|
for user_id, messages_by_device in local_by_user_then_device.items()
|
|
for device_id, message_json in messages_by_device.items()
|
|
],
|
|
)
|
|
|
|
issue9533_logger.debug(
|
|
"Stored to-device messages with stream_id %i for %s",
|
|
stream_id,
|
|
[
|
|
(user_id, device_id)
|
|
for (user_id, messages_by_device) in local_by_user_then_device.items()
|
|
for device_id in messages_by_device.keys()
|
|
],
|
|
)
|
|
|
|
|
|
class DeviceInboxBackgroundUpdateStore(SQLBaseStore):
|
|
DEVICE_INBOX_STREAM_ID = "device_inbox_stream_drop"
|
|
|
|
def __init__(self, database: DatabasePool, db_conn, hs):
|
|
super().__init__(database, db_conn, hs)
|
|
|
|
self.db_pool.updates.register_background_index_update(
|
|
"device_inbox_stream_index",
|
|
index_name="device_inbox_stream_id_user_id",
|
|
table="device_inbox",
|
|
columns=["stream_id", "user_id"],
|
|
)
|
|
|
|
self.db_pool.updates.register_background_update_handler(
|
|
self.DEVICE_INBOX_STREAM_ID, self._background_drop_index_device_inbox
|
|
)
|
|
|
|
async def _background_drop_index_device_inbox(self, progress, batch_size):
|
|
def reindex_txn(conn):
|
|
txn = conn.cursor()
|
|
txn.execute("DROP INDEX IF EXISTS device_inbox_stream_id")
|
|
txn.close()
|
|
|
|
await self.db_pool.runWithConnection(reindex_txn)
|
|
|
|
await self.db_pool.updates._end_background_update(self.DEVICE_INBOX_STREAM_ID)
|
|
|
|
return 1
|
|
|
|
|
|
class DeviceInboxStore(DeviceInboxWorkerStore, DeviceInboxBackgroundUpdateStore):
|
|
pass
|