mirror of
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176 lines
5.9 KiB
Python
176 lines
5.9 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.types import UserID
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from synapse.api.constants import Membership
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from synapse.api.events.room import RoomMemberEvent
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from ._base import SQLBaseStore, Table
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import collections
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import json
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import logging
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logger = logging.getLogger(__name__)
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class RoomMemberStore(SQLBaseStore):
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def get_room_member(self, user_id, room_id):
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"""Retrieve the current state of a room member.
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Args:
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user_id (str): The member's user ID.
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room_id (str): The room the member is in.
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Returns:
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namedtuple: The room member from the database, or None if this
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member does not exist.
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"""
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query = RoomMemberTable.select_statement(
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"room_id = ? AND user_id = ? ORDER BY id DESC LIMIT 1")
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return self._execute(
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RoomMemberTable.decode_single_result,
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query, room_id, user_id,
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)
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def store_room_member(self, user_id, sender, room_id, membership, content):
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"""Store a room member in the database.
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Args:
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user_id (str): The member's user ID.
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room_id (str): The room in relation to the member.
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membership (synapse.api.constants.Membership): The new membership
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state.
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content (dict): The content of the membership (JSON).
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"""
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content_json = json.dumps(content)
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return self._simple_insert(RoomMemberTable.table_name, dict(
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user_id=user_id,
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sender=sender,
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room_id=room_id,
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membership=membership,
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content=content_json,
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))
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@defer.inlineCallbacks
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def get_room_members(self, room_id, membership=None):
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"""Retrieve the current room member list for a room.
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Args:
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room_id (str): The room to get the list of members.
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membership (synapse.api.constants.Membership): The filter to apply
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to this list, or None to return all members with some state
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associated with this room.
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Returns:
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list of namedtuples representing the members in this room.
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"""
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query = RoomMemberTable.select_statement(
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"id IN (SELECT MAX(id) FROM " + RoomMemberTable.table_name
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+ " WHERE room_id = ? GROUP BY user_id)"
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)
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res = yield self._execute(
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RoomMemberTable.decode_results, query, room_id,
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)
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# strip memberships which don't match
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if membership:
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res = [entry for entry in res if entry.membership == membership]
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defer.returnValue(res)
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def get_rooms_for_user_where_membership_is(self, user_id, membership_list):
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""" Get all the rooms for this user where the membership for this user
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matches one in the membership list.
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Args:
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user_id (str): The user ID.
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membership_list (list): A list of synapse.api.constants.Membership
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values which the user must be in.
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Returns:
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A list of dicts with "room_id" and "membership" keys.
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"""
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if not membership_list:
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return defer.succeed(None)
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args = [user_id]
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membership_placeholder = ["membership=?"] * len(membership_list)
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where_membership = "(" + " OR ".join(membership_placeholder) + ")"
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for membership in membership_list:
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args.append(membership)
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# sub-select finds the row ID for the most recent (i.e. current)
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# state change of this user per room, then the outer select finds those
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query = ("SELECT room_id, membership FROM room_memberships"
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+ " WHERE id IN (SELECT MAX(id) FROM room_memberships"
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+ " WHERE user_id=? GROUP BY room_id)"
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+ " AND " + where_membership)
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return self._execute(
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self.cursor_to_dict, query, *args
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)
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@defer.inlineCallbacks
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def get_joined_hosts_for_room(self, room_id):
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query = RoomMemberTable.select_statement(
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"id IN (SELECT MAX(id) FROM " + RoomMemberTable.table_name
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+ " WHERE room_id = ? GROUP BY user_id)"
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)
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res = yield self._execute(
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RoomMemberTable.decode_results, query, room_id,
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)
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def host_from_user_id_string(user_id):
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domain = UserID.from_string(entry.user_id, self.hs).domain
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return domain
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# strip memberships which don't match
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hosts = [
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host_from_user_id_string(entry.user_id)
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for entry in res
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if entry.membership == Membership.JOIN
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]
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logger.debug("Returning hosts: %s from results: %s", hosts, res)
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defer.returnValue(hosts)
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def get_max_room_member_id(self):
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return self._simple_max_id(RoomMemberTable.table_name)
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class RoomMemberTable(Table):
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table_name = "room_memberships"
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fields = [
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"id",
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"user_id",
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"sender",
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"room_id",
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"membership",
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"content"
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]
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class EntryType(collections.namedtuple("RoomMemberEntry", fields)):
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def as_event(self, event_factory):
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return event_factory.create_event(
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etype=RoomMemberEvent.TYPE,
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room_id=self.room_id,
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target_user_id=self.user_id,
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user_id=self.sender,
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content=json.loads(self.content),
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)
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