237 lines
		
	
	
		
			8.6 KiB
		
	
	
	
		
			Python
		
	
	
			
		
		
	
	
			237 lines
		
	
	
		
			8.6 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 ._base import SQLBaseStore
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from synapse.api.constants import PresenceState
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from synapse.util.caches.descriptors import cached, cachedInlineCallbacks
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from collections import namedtuple
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from twisted.internet import defer
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class UserPresenceState(namedtuple("UserPresenceState",
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                        ("user_id", "state", "last_active_ts",
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                            "last_federation_update_ts", "last_user_sync_ts",
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                            "status_msg", "currently_active"))):
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    """Represents the current presence state of the user.
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    user_id (str)
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    last_active (int): Time in msec that the user last interacted with server.
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    last_federation_update (int): Time in msec since either a) we sent a presence
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        update to other servers or b) we received a presence update, depending
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        on if is a local user or not.
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    last_user_sync (int): Time in msec that the user last *completed* a sync
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        (or event stream).
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    status_msg (str): User set status message.
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    """
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    def copy_and_replace(self, **kwargs):
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        return self._replace(**kwargs)
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    @classmethod
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    def default(cls, user_id):
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        """Returns a default presence state.
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        """
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        return cls(
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            user_id=user_id,
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            state=PresenceState.OFFLINE,
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            last_active_ts=0,
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            last_federation_update_ts=0,
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            last_user_sync_ts=0,
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            status_msg=None,
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            currently_active=False,
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        )
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class PresenceStore(SQLBaseStore):
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    @defer.inlineCallbacks
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    def update_presence(self, presence_states):
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        stream_id_manager = yield self._presence_id_gen.get_next(self)
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        with stream_id_manager as stream_id:
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            yield self.runInteraction(
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                "update_presence",
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                self._update_presence_txn, stream_id, presence_states,
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            )
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        defer.returnValue((stream_id, self._presence_id_gen.get_max_token()))
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    def _update_presence_txn(self, txn, stream_id, presence_states):
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        for state in presence_states:
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            txn.call_after(
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                self.presence_stream_cache.entity_has_changed,
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                state.user_id, stream_id,
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            )
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        # Actually insert new rows
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        self._simple_insert_many_txn(
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            txn,
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            table="presence_stream",
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            values=[
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                {
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                    "stream_id": stream_id,
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                    "user_id": state.user_id,
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                    "state": state.state,
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                    "last_active_ts": state.last_active_ts,
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                    "last_federation_update_ts": state.last_federation_update_ts,
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                    "last_user_sync_ts": state.last_user_sync_ts,
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                    "status_msg": state.status_msg,
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                    "currently_active": state.currently_active,
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                }
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                for state in presence_states
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            ],
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        )
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        # Delete old rows to stop database from getting really big
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        sql = (
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            "DELETE FROM presence_stream WHERE"
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            " stream_id < ?"
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            " AND user_id IN (%s)"
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        )
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        batches = (
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            presence_states[i:i + 50]
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            for i in xrange(0, len(presence_states), 50)
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        )
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        for states in batches:
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            args = [stream_id]
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            args.extend(s.user_id for s in states)
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            txn.execute(
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                sql % (",".join("?" for _ in states),),
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                args
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            )
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    @defer.inlineCallbacks
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    def get_presence_for_users(self, user_ids):
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        rows = yield self._simple_select_many_batch(
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            table="presence_stream",
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            column="user_id",
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            iterable=user_ids,
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            keyvalues={},
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            retcols=(
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                "user_id",
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                "state",
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                "last_active_ts",
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                "last_federation_update_ts",
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                "last_user_sync_ts",
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                "status_msg",
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                "currently_active",
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            ),
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        )
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        for row in rows:
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            row["currently_active"] = bool(row["currently_active"])
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        defer.returnValue([UserPresenceState(**row) for row in rows])
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    def get_current_presence_token(self):
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        return self._presence_id_gen.get_max_token()
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    def allow_presence_visible(self, observed_localpart, observer_userid):
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        return self._simple_insert(
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            table="presence_allow_inbound",
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            values={"observed_user_id": observed_localpart,
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                    "observer_user_id": observer_userid},
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            desc="allow_presence_visible",
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            or_ignore=True,
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        )
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    def disallow_presence_visible(self, observed_localpart, observer_userid):
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        return self._simple_delete_one(
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            table="presence_allow_inbound",
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            keyvalues={"observed_user_id": observed_localpart,
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                       "observer_user_id": observer_userid},
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            desc="disallow_presence_visible",
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        )
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    def is_presence_visible(self, observed_localpart, observer_userid):
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        return self._simple_select_one(
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            table="presence_allow_inbound",
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            keyvalues={"observed_user_id": observed_localpart,
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                       "observer_user_id": observer_userid},
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            retcols=["observed_user_id"],
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            allow_none=True,
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            desc="is_presence_visible",
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        )
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    def add_presence_list_pending(self, observer_localpart, observed_userid):
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        return self._simple_insert(
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            table="presence_list",
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            values={"user_id": observer_localpart,
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                    "observed_user_id": observed_userid,
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                    "accepted": False},
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            desc="add_presence_list_pending",
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        )
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    @defer.inlineCallbacks
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    def set_presence_list_accepted(self, observer_localpart, observed_userid):
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        result = yield self._simple_update_one(
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            table="presence_list",
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            keyvalues={"user_id": observer_localpart,
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                       "observed_user_id": observed_userid},
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            updatevalues={"accepted": True},
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            desc="set_presence_list_accepted",
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        )
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        self.get_presence_list_accepted.invalidate((observer_localpart,))
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        self.get_presence_list_observers_accepted.invalidate((observed_userid,))
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        defer.returnValue(result)
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    def get_presence_list(self, observer_localpart, accepted=None):
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        if accepted:
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            return self.get_presence_list_accepted(observer_localpart)
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        else:
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            keyvalues = {"user_id": observer_localpart}
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            if accepted is not None:
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                keyvalues["accepted"] = accepted
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            return self._simple_select_list(
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                table="presence_list",
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                keyvalues=keyvalues,
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                retcols=["observed_user_id", "accepted"],
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                desc="get_presence_list",
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            )
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    @cached()
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    def get_presence_list_accepted(self, observer_localpart):
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        return self._simple_select_list(
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            table="presence_list",
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            keyvalues={"user_id": observer_localpart, "accepted": True},
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            retcols=["observed_user_id", "accepted"],
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            desc="get_presence_list_accepted",
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        )
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    @cachedInlineCallbacks()
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    def get_presence_list_observers_accepted(self, observed_userid):
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        user_localparts = yield self._simple_select_onecol(
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            table="presence_list",
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            keyvalues={"observed_user_id": observed_userid, "accepted": True},
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            retcol="user_id",
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            desc="get_presence_list_accepted",
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        )
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        defer.returnValue([
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            "@%s:%s" % (u, self.hs.hostname,) for u in user_localparts
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        ])
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    @defer.inlineCallbacks
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    def del_presence_list(self, observer_localpart, observed_userid):
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        yield self._simple_delete_one(
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            table="presence_list",
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            keyvalues={"user_id": observer_localpart,
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                       "observed_user_id": observed_userid},
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            desc="del_presence_list",
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        )
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        self.get_presence_list_accepted.invalidate((observer_localpart,))
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        self.get_presence_list_observers_accepted.invalidate((observed_userid,))
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