339 lines
11 KiB
Python
339 lines
11 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 synapse.api.events.room import (
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RoomMemberEvent, RoomTopicEvent, FeedbackEvent,
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# RoomConfigEvent,
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RoomNameEvent,
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RoomJoinRulesEvent,
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RoomPowerLevelsEvent,
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RoomAddStateLevelEvent,
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RoomSendEventLevelEvent,
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)
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from synapse.util.logutils import log_function
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from .directory import DirectoryStore
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from .feedback import FeedbackStore
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from .presence import PresenceStore
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from .profile import ProfileStore
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from .registration import RegistrationStore
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from .room import RoomStore
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from .roommember import RoomMemberStore
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from .stream import StreamStore
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from .pdu import StatePduStore, PduStore
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from .transactions import TransactionStore
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from .keys import KeyStore
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import json
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import logging
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import os
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logger = logging.getLogger(__name__)
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class DataStore(RoomMemberStore, RoomStore,
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RegistrationStore, StreamStore, ProfileStore, FeedbackStore,
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PresenceStore, PduStore, StatePduStore, TransactionStore,
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DirectoryStore, KeyStore):
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def __init__(self, hs):
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super(DataStore, self).__init__(hs)
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self.event_factory = hs.get_event_factory()
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self.hs = hs
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self.min_token_deferred = self._get_min_token()
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self.min_token = None
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@defer.inlineCallbacks
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@log_function
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def persist_event(self, event=None, backfilled=False, pdu=None):
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stream_ordering = None
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if backfilled:
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if not self.min_token_deferred.called:
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yield self.min_token_deferred
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self.min_token -= 1
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stream_ordering = self.min_token
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latest = yield self._db_pool.runInteraction(
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self._persist_pdu_event_txn,
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pdu=pdu,
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event=event,
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backfilled=backfilled,
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stream_ordering=stream_ordering,
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)
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defer.returnValue(latest)
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@defer.inlineCallbacks
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def get_event(self, event_id):
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events_dict = yield self._simple_select_one(
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"events",
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{"event_id": event_id},
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[
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"event_id",
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"type",
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"room_id",
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"content",
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"unrecognized_keys"
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],
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)
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event = self._parse_event_from_row(events_dict)
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defer.returnValue(event)
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def _persist_pdu_event_txn(self, txn, pdu=None, event=None,
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backfilled=False, stream_ordering=None):
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if pdu is not None:
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self._persist_event_pdu_txn(txn, pdu)
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if event is not None:
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return self._persist_event_txn(
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txn, event, backfilled, stream_ordering
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)
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def _persist_event_pdu_txn(self, txn, pdu):
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cols = dict(pdu.__dict__)
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unrec_keys = dict(pdu.unrecognized_keys)
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del cols["content"]
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del cols["prev_pdus"]
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cols["content_json"] = json.dumps(pdu.content)
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cols["unrecognized_keys"] = json.dumps(unrec_keys)
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logger.debug("Persisting: %s", repr(cols))
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if pdu.is_state:
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self._persist_state_txn(txn, pdu.prev_pdus, cols)
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else:
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self._persist_pdu_txn(txn, pdu.prev_pdus, cols)
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self._update_min_depth_for_context_txn(txn, pdu.context, pdu.depth)
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@log_function
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def _persist_event_txn(self, txn, event, backfilled, stream_ordering=None):
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if event.type == RoomMemberEvent.TYPE:
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self._store_room_member_txn(txn, event)
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elif event.type == FeedbackEvent.TYPE:
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self._store_feedback_txn(txn, event)
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elif event.type == RoomNameEvent.TYPE:
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self._store_room_name_txn(txn, event)
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elif event.type == RoomTopicEvent.TYPE:
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self._store_room_topic_txn(txn, event)
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elif event.type == RoomJoinRulesEvent.TYPE:
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self._store_join_rule(txn, event)
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elif event.type == RoomPowerLevelsEvent.TYPE:
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self._store_power_levels(txn, event)
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elif event.type == RoomAddStateLevelEvent.TYPE:
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self._store_add_state_level(txn, event)
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elif event.type == RoomSendEventLevelEvent.TYPE:
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self._store_send_event_level(txn, event)
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vals = {
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"topological_ordering": event.depth,
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"event_id": event.event_id,
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"type": event.type,
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"room_id": event.room_id,
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"content": json.dumps(event.content),
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"processed": True,
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}
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if stream_ordering is not None:
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vals["stream_ordering"] = stream_ordering
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if hasattr(event, "outlier"):
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vals["outlier"] = event.outlier
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else:
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vals["outlier"] = False
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unrec = {
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k: v
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for k, v in event.get_full_dict().items()
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if k not in vals.keys()
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}
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vals["unrecognized_keys"] = json.dumps(unrec)
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try:
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self._simple_insert_txn(txn, "events", vals)
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except:
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logger.exception(
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"Failed to persist, probably duplicate: %s",
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event.event_id
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)
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return
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if not backfilled and hasattr(event, "state_key"):
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vals = {
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"event_id": event.event_id,
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"room_id": event.room_id,
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"type": event.type,
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"state_key": event.state_key,
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}
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if hasattr(event, "prev_state"):
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vals["prev_state"] = event.prev_state
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self._simple_insert_txn(txn, "state_events", vals)
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self._simple_insert_txn(
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txn,
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"current_state_events",
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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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"type": event.type,
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"state_key": event.state_key,
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}
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)
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return self._get_room_events_max_id_txn(txn)
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@defer.inlineCallbacks
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def get_current_state(self, room_id, event_type=None, state_key=""):
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sql = (
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"SELECT e.* FROM events as e "
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"INNER JOIN current_state_events as c ON e.event_id = c.event_id "
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"INNER JOIN state_events as s ON e.event_id = s.event_id "
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"WHERE c.room_id = ? "
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)
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if event_type:
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sql += " AND s.type = ? AND s.state_key = ? "
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args = (room_id, event_type, state_key)
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else:
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args = (room_id, )
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results = yield self._execute_and_decode(sql, *args)
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defer.returnValue([self._parse_event_from_row(r) for r in results])
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@defer.inlineCallbacks
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def _get_min_token(self):
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row = yield self._execute(
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None,
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"SELECT MIN(stream_ordering) FROM events"
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)
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self.min_token = row[0][0] if row and row[0] and row[0][0] else -1
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self.min_token = min(self.min_token, -1)
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logger.debug("min_token is: %s", self.min_token)
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defer.returnValue(self.min_token)
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def snapshot_room(self, room_id, user_id, state_type=None, state_key=None):
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"""Snapshot the room for an update by a user
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Args:
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room_id (synapse.types.RoomId): The room to snapshot.
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user_id (synapse.types.UserId): The user to snapshot the room for.
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state_type (str): Optional state type to snapshot.
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state_key (str): Optional state key to snapshot.
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Returns:
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synapse.storage.Snapshot: A snapshot of the state of the room.
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"""
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def _snapshot(txn):
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membership_state = self._get_room_member(txn, user_id, room_id)
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prev_pdus = self._get_latest_pdus_in_context(
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txn, room_id
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)
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if state_type is not None and state_key is not None:
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prev_state_pdu = self._get_current_state_pdu(
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txn, room_id, state_type, state_key
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)
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else:
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prev_state_pdu = None
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return Snapshot(
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store=self,
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room_id=room_id,
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user_id=user_id,
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prev_pdus=prev_pdus,
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membership_state=membership_state,
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state_type=state_type,
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state_key=state_key,
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prev_state_pdu=prev_state_pdu,
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)
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return self._db_pool.runInteraction(_snapshot)
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class Snapshot(object):
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"""Snapshot of the state of a room
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Args:
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store (DataStore): The datastore.
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room_id (RoomId): The room of the snapshot.
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user_id (UserId): The user this snapshot is for.
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prev_pdus (list): The list of PDU ids this snapshot is after.
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membership_state (RoomMemberEvent): The current state of the user in
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the room.
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state_type (str, optional): State type captured by the snapshot
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state_key (str, optional): State key captured by the snapshot
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prev_state_pdu (PduEntry, optional): pdu id of
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the previous value of the state type and key in the room.
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"""
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def __init__(self, store, room_id, user_id, prev_pdus,
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membership_state, state_type=None, state_key=None,
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prev_state_pdu=None):
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self.store = store
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self.room_id = room_id
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self.user_id = user_id
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self.prev_pdus = prev_pdus
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self.membership_state = membership_state
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self.state_type = state_type
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self.state_key = state_key
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self.prev_state_pdu = prev_state_pdu
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def fill_out_prev_events(self, event):
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if hasattr(event, "prev_events"):
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return
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es = [
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"%s@%s" % (p_id, origin) for p_id, origin, _ in self.prev_pdus
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]
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event.prev_events = [e for e in es if e != event.event_id]
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if self.prev_pdus:
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event.depth = max([int(v) for _, _, v in self.prev_pdus]) + 1
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else:
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event.depth = 0
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def schema_path(schema):
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""" Get a filesystem path for the named database schema
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Args:
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schema: Name of the database schema.
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Returns:
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A filesystem path pointing at a ".sql" file.
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"""
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dir_path = os.path.dirname(__file__)
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schemaPath = os.path.join(dir_path, "schema", schema + ".sql")
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return schemaPath
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def read_schema(schema):
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""" Read the named database schema.
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Args:
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schema: Name of the datbase schema.
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Returns:
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A string containing the database schema.
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"""
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with open(schema_path(schema)) as schema_file:
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return schema_file.read()
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