330 lines
		
	
	
		
			13 KiB
		
	
	
	
		
			Python
		
	
	
			
		
		
	
	
			330 lines
		
	
	
		
			13 KiB
		
	
	
	
		
			Python
		
	
	
| # -*- coding: utf-8 -*-
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| # Copyright 2015 OpenMarket Ltd
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| #
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| # Licensed under the Apache License, Version 2.0 (the "License");
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| # you may not use this file except in compliance with the License.
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| # You may obtain a copy of the License at
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| #
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| #     http://www.apache.org/licenses/LICENSE-2.0
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| #
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| # Unless required by applicable law or agreed to in writing, software
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| # distributed under the License is distributed on an "AS IS" BASIS,
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| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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| # See the License for the specific language governing permissions and
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| # limitations under the License.
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| 
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| from ._base import SQLBaseStore
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| from twisted.internet import defer
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| from synapse.util.caches.descriptors import cachedInlineCallbacks
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| 
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| import logging
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| import ujson as json
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| 
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| logger = logging.getLogger(__name__)
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| 
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| 
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| class EventPushActionsStore(SQLBaseStore):
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|     def __init__(self, hs):
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|         self.stream_ordering_month_ago = None
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|         super(EventPushActionsStore, self).__init__(hs)
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| 
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|     def _set_push_actions_for_event_and_users_txn(self, txn, event, tuples):
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|         """
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|         Args:
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|             event: the event set actions for
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|             tuples: list of tuples of (user_id, actions)
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|         """
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|         values = []
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|         for uid, actions in tuples:
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|             values.append({
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|                 'room_id': event.room_id,
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|                 'event_id': event.event_id,
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|                 'user_id': uid,
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|                 'actions': json.dumps(actions),
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|                 'stream_ordering': event.internal_metadata.stream_ordering,
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|                 'topological_ordering': event.depth,
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|                 'notif': 1,
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|                 'highlight': 1 if _action_has_highlight(actions) else 0,
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|             })
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| 
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|         for uid, __ in tuples:
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|             txn.call_after(
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|                 self.get_unread_event_push_actions_by_room_for_user.invalidate_many,
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|                 (event.room_id, uid)
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|             )
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|         self._simple_insert_many_txn(txn, "event_push_actions", values)
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| 
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|     @cachedInlineCallbacks(num_args=3, lru=True, tree=True, max_entries=5000)
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|     def get_unread_event_push_actions_by_room_for_user(
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|             self, room_id, user_id, last_read_event_id
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|     ):
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|         def _get_unread_event_push_actions_by_room(txn):
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|             sql = (
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|                 "SELECT stream_ordering, topological_ordering"
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|                 " FROM events"
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|                 " WHERE room_id = ? AND event_id = ?"
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|             )
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|             txn.execute(
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|                 sql, (room_id, last_read_event_id)
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|             )
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|             results = txn.fetchall()
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|             if len(results) == 0:
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|                 return {"notify_count": 0, "highlight_count": 0}
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| 
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|             stream_ordering = results[0][0]
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|             topological_ordering = results[0][1]
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| 
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|             sql = (
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|                 "SELECT sum(notif), sum(highlight)"
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|                 " FROM event_push_actions ea"
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|                 " WHERE"
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|                 " user_id = ?"
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|                 " AND room_id = ?"
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|                 " AND ("
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|                 "       topological_ordering > ?"
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|                 "       OR (topological_ordering = ? AND stream_ordering > ?)"
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|                 ")"
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|             )
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|             txn.execute(sql, (
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|                 user_id, room_id,
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|                 topological_ordering, topological_ordering, stream_ordering
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|             ))
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|             row = txn.fetchone()
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|             if row:
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|                 return {
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|                     "notify_count": row[0] or 0,
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|                     "highlight_count": row[1] or 0,
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|                 }
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|             else:
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|                 return {"notify_count": 0, "highlight_count": 0}
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| 
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|         ret = yield self.runInteraction(
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|             "get_unread_event_push_actions_by_room",
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|             _get_unread_event_push_actions_by_room
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|         )
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|         defer.returnValue(ret)
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| 
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|     @defer.inlineCallbacks
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|     def get_push_action_users_in_range(self, min_stream_ordering, max_stream_ordering):
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|         def f(txn):
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|             sql = (
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|                 "SELECT DISTINCT(user_id) FROM event_push_actions WHERE"
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|                 " stream_ordering >= ? AND stream_ordering <= ?"
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|             )
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|             txn.execute(sql, (min_stream_ordering, max_stream_ordering))
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|             return [r[0] for r in txn.fetchall()]
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|         ret = yield self.runInteraction("get_push_action_users_in_range", f)
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|         defer.returnValue(ret)
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| 
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|     @defer.inlineCallbacks
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|     def get_unread_push_actions_for_user_in_range(self, user_id,
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|                                                   min_stream_ordering,
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|                                                   max_stream_ordering=None,
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|                                                   limit=20):
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|         def get_after_receipt(txn):
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|             sql = (
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|                 "SELECT ep.event_id, ep.room_id, ep.stream_ordering, ep.actions, "
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|                 "e.received_ts "
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|                 "FROM ("
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|                 "   SELECT room_id, user_id, "
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|                 "       max(topological_ordering) as topological_ordering, "
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|                 "       max(stream_ordering) as stream_ordering "
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|                 "       FROM events"
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|                 "   NATURAL JOIN receipts_linearized WHERE receipt_type = 'm.read'"
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|                 "   GROUP BY room_id, user_id"
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|                 ") AS rl,"
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|                 " event_push_actions AS ep"
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|                 " INNER JOIN events AS e USING (room_id, event_id)"
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|                 " WHERE"
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|                 "   ep.room_id = rl.room_id"
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|                 "   AND ("
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|                 "       ep.topological_ordering > rl.topological_ordering"
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|                 "       OR ("
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|                 "           ep.topological_ordering = rl.topological_ordering"
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|                 "           AND ep.stream_ordering > rl.stream_ordering"
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|                 "       )"
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|                 "   )"
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|                 "   AND ep.stream_ordering > ?"
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|                 "   AND ep.user_id = ?"
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|                 "   AND ep.user_id = rl.user_id"
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|             )
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|             args = [min_stream_ordering, user_id]
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|             if max_stream_ordering is not None:
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|                 sql += " AND ep.stream_ordering <= ?"
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|                 args.append(max_stream_ordering)
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|             sql += " ORDER BY ep.stream_ordering ASC LIMIT ?"
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|             args.append(limit)
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|             txn.execute(sql, args)
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|             return txn.fetchall()
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|         after_read_receipt = yield self.runInteraction(
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|             "get_unread_push_actions_for_user_in_range", get_after_receipt
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|         )
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| 
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|         def get_no_receipt(txn):
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|             sql = (
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|                 "SELECT ep.event_id, ep.room_id, ep.stream_ordering, ep.actions,"
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|                 " e.received_ts"
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|                 " FROM event_push_actions AS ep"
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|                 " JOIN events e ON ep.room_id = e.room_id AND ep.event_id = e.event_id"
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|                 " WHERE ep.room_id not in ("
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|                 "   SELECT room_id FROM events NATURAL JOIN receipts_linearized"
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|                 "   WHERE receipt_type = 'm.read' AND user_id = ?"
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|                 "   GROUP BY room_id"
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|                 ") AND ep.user_id = ? AND ep.stream_ordering > ?"
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|             )
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|             args = [user_id, user_id, min_stream_ordering]
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|             if max_stream_ordering is not None:
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|                 sql += " AND ep.stream_ordering <= ?"
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|                 args.append(max_stream_ordering)
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|             sql += " ORDER BY ep.stream_ordering ASC"
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|             txn.execute(sql, args)
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|             return txn.fetchall()
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|         no_read_receipt = yield self.runInteraction(
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|             "get_unread_push_actions_for_user_in_range", get_no_receipt
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|         )
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| 
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|         defer.returnValue([
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|             {
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|                 "event_id": row[0],
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|                 "room_id": row[1],
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|                 "stream_ordering": row[2],
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|                 "actions": json.loads(row[3]),
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|                 "received_ts": row[4],
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|             } for row in after_read_receipt + no_read_receipt
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|         ])
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| 
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|     @defer.inlineCallbacks
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|     def get_time_of_last_push_action_before(self, stream_ordering):
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|         def f(txn):
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|             sql = (
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|                 "SELECT e.received_ts"
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|                 " FROM event_push_actions AS ep"
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|                 " JOIN events e ON ep.room_id = e.room_id AND ep.event_id = e.event_id"
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|                 " WHERE ep.stream_ordering > ?"
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|                 " ORDER BY ep.stream_ordering ASC"
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|                 " LIMIT 1"
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|             )
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|             txn.execute(sql, (stream_ordering,))
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|             return txn.fetchone()
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|         result = yield self.runInteraction("get_time_of_last_push_action_before", f)
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|         defer.returnValue(result[0] if result else None)
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| 
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|     @defer.inlineCallbacks
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|     def get_latest_push_action_stream_ordering(self):
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|         def f(txn):
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|             txn.execute("SELECT MAX(stream_ordering) FROM event_push_actions")
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|             return txn.fetchone()
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|         result = yield self.runInteraction(
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|             "get_latest_push_action_stream_ordering", f
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|         )
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|         defer.returnValue(result[0] or 0)
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| 
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|     def _remove_push_actions_for_event_id_txn(self, txn, room_id, event_id):
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|         # Sad that we have to blow away the cache for the whole room here
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|         txn.call_after(
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|             self.get_unread_event_push_actions_by_room_for_user.invalidate_many,
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|             (room_id,)
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|         )
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|         txn.execute(
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|             "DELETE FROM event_push_actions WHERE room_id = ? AND event_id = ?",
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|             (room_id, event_id)
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|         )
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| 
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|     def _remove_old_push_actions_before_txn(self, txn, room_id, user_id,
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|                                             topological_ordering):
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|         """
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|         Purges old, stale push actions for a user and room before a given
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|         topological_ordering
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|         Args:
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|             txn: The transcation
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|             room_id: Room ID to delete from
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|             user_id: user ID to delete for
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|             topological_ordering: The lowest topological ordering which will
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|                                   not be deleted.
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|         """
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|         txn.call_after(
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|             self.get_unread_event_push_actions_by_room_for_user.invalidate_many,
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|             (room_id, user_id, )
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|         )
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| 
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|         # We need to join on the events table to get the received_ts for
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|         # event_push_actions and sqlite won't let us use a join in a delete so
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|         # we can't just delete where received_ts < x. Furthermore we can
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|         # only identify event_push_actions by a tuple of room_id, event_id
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|         # we we can't use a subquery.
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|         # Instead, we look up the stream ordering for the last event in that
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|         # room received before the threshold time and delete event_push_actions
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|         # in the room with a stream_odering before that.
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|         txn.execute(
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|             "DELETE FROM event_push_actions "
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|             " WHERE user_id = ? AND room_id = ? AND "
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|             " topological_ordering < ? AND stream_ordering < ?",
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|             (user_id, room_id, topological_ordering, self.stream_ordering_month_ago)
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|         )
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| 
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|     @defer.inlineCallbacks
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|     def _find_stream_orderings_for_times(self):
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|         yield self.runInteraction(
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|             "_find_stream_orderings_for_times",
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|             self._find_stream_orderings_for_times_txn
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|         )
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| 
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|     def _find_stream_orderings_for_times_txn(self, txn):
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|         logger.info("Searching for stream ordering 1 month ago")
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|         self.stream_ordering_month_ago = self._find_first_stream_ordering_after_ts_txn(
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|             txn, self._clock.time_msec() - 30 * 24 * 60 * 60 * 1000
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|         )
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|         logger.info(
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|             "Found stream ordering 1 month ago: it's %d",
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|             self.stream_ordering_month_ago
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|         )
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| 
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|     def _find_first_stream_ordering_after_ts_txn(self, txn, ts):
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|         """
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|         Find the stream_ordering of the first event that was received after
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|         a given timestamp. This is relatively slow as there is no index on
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|         received_ts but we can then use this to delete push actions before
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|         this.
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| 
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|         received_ts must necessarily be in the same order as stream_ordering
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|         and stream_ordering is indexed, so we manually binary search using
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|         stream_ordering
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|         """
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|         txn.execute("SELECT MAX(stream_ordering) FROM events")
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|         max_stream_ordering = txn.fetchone()[0]
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| 
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|         if max_stream_ordering is None:
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|             return 0
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| 
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|         range_start = 0
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|         range_end = max_stream_ordering
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| 
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|         sql = (
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|             "SELECT received_ts FROM events"
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|             " WHERE stream_ordering > ?"
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|             " ORDER BY stream_ordering"
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|             " LIMIT 1"
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|         )
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| 
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|         while range_end - range_start > 1:
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|             middle = int((range_end + range_start) / 2)
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|             txn.execute(sql, (middle,))
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|             middle_ts = txn.fetchone()[0]
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|             if ts > middle_ts:
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|                 range_start = middle
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|             else:
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|                 range_end = middle
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| 
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|         return range_end
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| 
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| 
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| def _action_has_highlight(actions):
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|     for action in actions:
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|         try:
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|             if action.get("set_tweak", None) == "highlight":
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|                 return action.get("value", True)
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|         except AttributeError:
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|             pass
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| 
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|     return False
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