mirror of
https://mau.dev/maunium/synapse.git
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748d8fdc7b
Some streams will occaisonally advance their positions without actually having any new rows to send over federation. Currently this means that the token will not advance on the workers, leading to them repeatedly sending a slightly out of date token. This in turns requires the master to hit the DB to check if there are any new rows, rather than hitting the no op logic where we check if the given token matches the current token. This commit changes the API to always return an entry if the position for a stream has changed, allowing workers to advance their tokens correctly.
329 lines
11 KiB
Python
329 lines
11 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright 2014-2016 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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from twisted.internet import defer
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from synapse.api.errors import StoreError
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from ._base import SQLBaseStore
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from .engines import PostgresEngine, Sqlite3Engine
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import collections
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import logging
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import ujson as json
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logger = logging.getLogger(__name__)
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OpsLevel = collections.namedtuple(
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"OpsLevel",
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("ban_level", "kick_level", "redact_level",)
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)
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class RoomStore(SQLBaseStore):
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@defer.inlineCallbacks
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def store_room(self, room_id, room_creator_user_id, is_public):
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"""Stores a room.
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Args:
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room_id (str): The desired room ID, can be None.
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room_creator_user_id (str): The user ID of the room creator.
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is_public (bool): True to indicate that this room should appear in
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public room lists.
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Raises:
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StoreError if the room could not be stored.
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"""
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try:
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def store_room_txn(txn, next_id):
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self._simple_insert_txn(
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txn,
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"rooms",
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{
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"room_id": room_id,
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"creator": room_creator_user_id,
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"is_public": is_public,
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},
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)
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if is_public:
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self._simple_insert_txn(
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txn,
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table="public_room_list_stream",
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values={
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"stream_id": next_id,
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"room_id": room_id,
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"visibility": is_public,
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}
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)
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with self._public_room_id_gen.get_next() as next_id:
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yield self.runInteraction(
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"store_room_txn",
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store_room_txn, next_id,
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)
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except Exception as e:
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logger.error("store_room with room_id=%s failed: %s", room_id, e)
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raise StoreError(500, "Problem creating room.")
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def get_room(self, room_id):
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"""Retrieve a room.
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Args:
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room_id (str): The ID of the room to retrieve.
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Returns:
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A namedtuple containing the room information, or an empty list.
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"""
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return self._simple_select_one(
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table="rooms",
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keyvalues={"room_id": room_id},
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retcols=("room_id", "is_public", "creator"),
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desc="get_room",
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allow_none=True,
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)
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@defer.inlineCallbacks
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def set_room_is_public(self, room_id, is_public):
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def set_room_is_public_txn(txn, next_id):
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self._simple_update_one_txn(
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txn,
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table="rooms",
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keyvalues={"room_id": room_id},
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updatevalues={"is_public": is_public},
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)
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entries = self._simple_select_list_txn(
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txn,
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table="public_room_list_stream",
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keyvalues={"room_id": room_id},
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retcols=("stream_id", "visibility"),
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)
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entries.sort(key=lambda r: r["stream_id"])
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add_to_stream = True
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if entries:
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add_to_stream = bool(entries[-1]["visibility"]) != is_public
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if add_to_stream:
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self._simple_insert_txn(
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txn,
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table="public_room_list_stream",
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values={
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"stream_id": next_id,
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"room_id": room_id,
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"visibility": is_public,
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}
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)
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with self._public_room_id_gen.get_next() as next_id:
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yield self.runInteraction(
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"set_room_is_public",
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set_room_is_public_txn, next_id,
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)
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def get_public_room_ids(self):
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return self._simple_select_onecol(
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table="rooms",
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keyvalues={
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"is_public": True,
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},
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retcol="room_id",
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desc="get_public_room_ids",
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)
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def get_room_count(self):
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"""Retrieve a list of all rooms
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"""
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def f(txn):
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sql = "SELECT count(*) FROM rooms"
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txn.execute(sql)
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row = txn.fetchone()
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return row[0] or 0
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return self.runInteraction(
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"get_rooms", f
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)
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def _store_room_topic_txn(self, txn, event):
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if hasattr(event, "content") and "topic" in event.content:
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self._simple_insert_txn(
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txn,
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"topics",
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{
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"event_id": event.event_id,
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"room_id": event.room_id,
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"topic": event.content["topic"],
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},
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)
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self._store_event_search_txn(
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txn, event, "content.topic", event.content["topic"]
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)
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def _store_room_name_txn(self, txn, event):
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if hasattr(event, "content") and "name" in event.content:
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self._simple_insert_txn(
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txn,
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"room_names",
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{
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"event_id": event.event_id,
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"room_id": event.room_id,
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"name": event.content["name"],
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}
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)
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self._store_event_search_txn(
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txn, event, "content.name", event.content["name"]
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)
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def _store_room_message_txn(self, txn, event):
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if hasattr(event, "content") and "body" in event.content:
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self._store_event_search_txn(
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txn, event, "content.body", event.content["body"]
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)
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def _store_history_visibility_txn(self, txn, event):
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self._store_content_index_txn(txn, event, "history_visibility")
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def _store_guest_access_txn(self, txn, event):
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self._store_content_index_txn(txn, event, "guest_access")
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def _store_content_index_txn(self, txn, event, key):
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if hasattr(event, "content") and key in event.content:
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sql = (
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"INSERT INTO %(key)s"
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" (event_id, room_id, %(key)s)"
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" VALUES (?, ?, ?)" % {"key": key}
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)
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txn.execute(sql, (
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event.event_id,
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event.room_id,
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event.content[key]
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))
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def _store_event_search_txn(self, txn, event, key, value):
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if isinstance(self.database_engine, PostgresEngine):
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sql = (
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"INSERT INTO event_search"
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" (event_id, room_id, key, vector, stream_ordering, origin_server_ts)"
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" VALUES (?,?,?,to_tsvector('english', ?),?,?)"
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)
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txn.execute(
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sql,
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(
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event.event_id, event.room_id, key, value,
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event.internal_metadata.stream_ordering,
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event.origin_server_ts,
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)
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)
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elif isinstance(self.database_engine, Sqlite3Engine):
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sql = (
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"INSERT INTO event_search (event_id, room_id, key, value)"
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" VALUES (?,?,?,?)"
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)
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txn.execute(sql, (event.event_id, event.room_id, key, value,))
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else:
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# This should be unreachable.
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raise Exception("Unrecognized database engine")
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def add_event_report(self, room_id, event_id, user_id, reason, content,
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received_ts):
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next_id = self._event_reports_id_gen.get_next()
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return self._simple_insert(
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table="event_reports",
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values={
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"id": next_id,
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"received_ts": received_ts,
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"room_id": room_id,
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"event_id": event_id,
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"user_id": user_id,
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"reason": reason,
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"content": json.dumps(content),
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},
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desc="add_event_report"
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)
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def get_current_public_room_stream_id(self):
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return self._public_room_id_gen.get_current_token()
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def get_public_room_ids_at_stream_id(self, stream_id):
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return self.runInteraction(
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"get_public_room_ids_at_stream_id",
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self.get_public_room_ids_at_stream_id_txn, stream_id
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)
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def get_public_room_ids_at_stream_id_txn(self, txn, stream_id):
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return {
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rm
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for rm, vis in self.get_published_at_stream_id_txn(txn, stream_id).items()
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if vis
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}
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def get_published_at_stream_id_txn(self, txn, stream_id):
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sql = ("""
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SELECT room_id, visibility FROM public_room_list_stream
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INNER JOIN (
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SELECT room_id, max(stream_id) AS stream_id
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FROM public_room_list_stream
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WHERE stream_id <= ?
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GROUP BY room_id
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) grouped USING (room_id, stream_id)
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""")
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txn.execute(sql, (stream_id,))
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return dict(txn.fetchall())
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def get_public_room_changes(self, prev_stream_id, new_stream_id):
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def get_public_room_changes_txn(txn):
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then_rooms = self.get_public_room_ids_at_stream_id_txn(txn, prev_stream_id)
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now_rooms_dict = self.get_published_at_stream_id_txn(txn, new_stream_id)
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now_rooms_visible = set(
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rm for rm, vis in now_rooms_dict.items() if vis
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)
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now_rooms_not_visible = set(
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rm for rm, vis in now_rooms_dict.items() if not vis
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)
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newly_visible = now_rooms_visible - then_rooms
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newly_unpublished = now_rooms_not_visible & then_rooms
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return newly_visible, newly_unpublished
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return self.runInteraction(
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"get_public_room_changes", get_public_room_changes_txn
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)
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def get_all_new_public_rooms(self, prev_id, current_id, limit):
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def get_all_new_public_rooms(txn):
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sql = ("""
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SELECT stream_id, room_id, visibility FROM public_room_list_stream
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WHERE 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, (prev_id, current_id, limit,))
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return txn.fetchall()
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if prev_id == current_id:
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return defer.succeed([])
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return self.runInteraction(
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"get_all_new_public_rooms", get_all_new_public_rooms
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)
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