mirror of
https://git.anonymousland.org/anonymousland/synapse-product.git
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131 lines
3.7 KiB
Python
131 lines
3.7 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright 2014 matrix.org
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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 ._base import SQLBaseStore
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from synapse.api.constants import Membership
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import json
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import logging
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logger = logging.getLogger(__name__)
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MAX_STREAM_SIZE = 1000
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class StreamStore(SQLBaseStore):
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@defer.inlineCallbacks
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def get_room_events_stream(self, user_id, from_key, to_key, room_id,
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limit=0, with_feedback=False):
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# TODO (erikj): Handle compressed feedback
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current_room_membership_sql = (
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"SELECT m.room_id FROM room_memberships as m "
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"INNER JOIN current_state_events as c ON m.event_id = c.event_id "
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"WHERE m.user_id = ?"
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)
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invites_sql = (
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"SELECT m.event_id FROM room_memberships as m "
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"INNER JOIN current_state_events as c ON m.event_id = c.event_id "
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"WHERE m.user_id = ? AND m.membership = ?"
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)
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if limit:
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limit = max(limit, MAX_STREAM_SIZE)
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else:
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limit = MAX_STREAM_SIZE
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# From and to keys should be integers from ordering.
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from_key = int(from_key)
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to_key = int(to_key)
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if from_key == to_key:
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defer.returnValue(([], to_key))
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return
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sql = (
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"SELECT * FROM events as e WHERE "
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"((room_id IN (%(current)s)) OR "
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"(event_id IN (%(invites)s))) "
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) % {
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"current": current_room_membership_sql,
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"invites": invites_sql,
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}
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# Constraints and ordering depend on direction.
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if from_key < to_key:
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sql += (
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"AND e.ordering > ? AND e.ordering < ? "
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"ORDER BY ordering ASC LIMIT %(limit)d "
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) % {"limit": limit}
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else:
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sql += (
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"AND e.ordering < ? AND e.ordering > ? "
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"ORDER BY ordering DESC LIMIT %(limit)d "
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) % {"limit": int(limit)}
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rows = yield self._execute_and_decode(
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sql,
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user_id, user_id, Membership.INVITE, from_key, to_key
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)
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ret = [self._parse_event_from_row(r) for r in rows]
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if rows:
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if from_key < to_key:
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key = max([r["ordering"] for r in rows])
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else:
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key = min([r["ordering"] for r in rows])
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else:
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key = to_key
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defer.returnValue((ret, key))
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@defer.inlineCallbacks
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def get_recent_events_for_room(self, room_id, limit, with_feedback=False):
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# TODO (erikj): Handle compressed feedback
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sql = (
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"SELECT * FROM events WHERE room_id = ? "
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"ORDER BY ordering DESC LIMIT ? "
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)
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rows = yield self._execute_and_decode(
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sql,
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room_id, limit
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)
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rows.reverse() # As we selected with reverse ordering
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defer.returnValue([self._parse_event_from_row(r) for r in rows])
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@defer.inlineCallbacks
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def get_room_events_max_id(self):
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res = yield self._execute_and_decode(
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"SELECT MAX(ordering) as m FROM events"
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)
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if not res:
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defer.returnValue(0)
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return
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defer.returnValue(res[0]["m"])
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