759 lines
25 KiB
Python
759 lines
25 KiB
Python
# -*- coding: utf-8 -*-
|
|
# Copyright 2014 matrix.org
|
|
#
|
|
# Licensed under the Apache License, Version 2.0 (the "License");
|
|
# you may not use this file except in compliance with the License.
|
|
# You may obtain a copy of the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS,
|
|
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
# See the License for the specific language governing permissions and
|
|
# limitations under the License.
|
|
|
|
from twisted.internet import defer
|
|
|
|
from synapse.api.errors import SynapseError, AuthError
|
|
from synapse.api.constants import PresenceState
|
|
from synapse.api.streams import StreamData
|
|
|
|
from ._base import BaseHandler
|
|
|
|
import logging
|
|
|
|
|
|
logger = logging.getLogger(__name__)
|
|
|
|
|
|
# TODO(paul): Maybe there's one of these I can steal from somewhere
|
|
def partition(l, func):
|
|
"""Partition the list by the result of func applied to each element."""
|
|
ret = {}
|
|
|
|
for x in l:
|
|
key = func(x)
|
|
if key not in ret:
|
|
ret[key] = []
|
|
ret[key].append(x)
|
|
|
|
return ret
|
|
|
|
|
|
def partitionbool(l, func):
|
|
def boolfunc(x):
|
|
return bool(func(x))
|
|
|
|
ret = partition(l, boolfunc)
|
|
return ret.get(True, []), ret.get(False, [])
|
|
|
|
|
|
class PresenceHandler(BaseHandler):
|
|
|
|
def __init__(self, hs):
|
|
super(PresenceHandler, self).__init__(hs)
|
|
|
|
self.homeserver = hs
|
|
|
|
self.clock = hs.get_clock()
|
|
|
|
distributor = hs.get_distributor()
|
|
distributor.observe("registered_user", self.registered_user)
|
|
|
|
distributor.observe(
|
|
"started_user_eventstream", self.started_user_eventstream
|
|
)
|
|
distributor.observe(
|
|
"stopped_user_eventstream", self.stopped_user_eventstream
|
|
)
|
|
|
|
distributor.observe("user_joined_room",
|
|
self.user_joined_room
|
|
)
|
|
|
|
distributor.declare("collect_presencelike_data")
|
|
|
|
distributor.declare("changed_presencelike_data")
|
|
distributor.observe(
|
|
"changed_presencelike_data", self.changed_presencelike_data
|
|
)
|
|
|
|
self.distributor = distributor
|
|
|
|
self.federation = hs.get_replication_layer()
|
|
|
|
self.federation.register_edu_handler(
|
|
"m.presence", self.incoming_presence
|
|
)
|
|
self.federation.register_edu_handler(
|
|
"m.presence_invite",
|
|
lambda origin, content: self.invite_presence(
|
|
observed_user=hs.parse_userid(content["observed_user"]),
|
|
observer_user=hs.parse_userid(content["observer_user"]),
|
|
)
|
|
)
|
|
self.federation.register_edu_handler(
|
|
"m.presence_accept",
|
|
lambda origin, content: self.accept_presence(
|
|
observed_user=hs.parse_userid(content["observed_user"]),
|
|
observer_user=hs.parse_userid(content["observer_user"]),
|
|
)
|
|
)
|
|
self.federation.register_edu_handler(
|
|
"m.presence_deny",
|
|
lambda origin, content: self.deny_presence(
|
|
observed_user=hs.parse_userid(content["observed_user"]),
|
|
observer_user=hs.parse_userid(content["observer_user"]),
|
|
)
|
|
)
|
|
|
|
# IN-MEMORY store, mapping local userparts to sets of local users to
|
|
# be informed of state changes.
|
|
self._local_pushmap = {}
|
|
# map local users to sets of remote /domain names/ who are interested
|
|
# in them
|
|
self._remote_sendmap = {}
|
|
# map remote users to sets of local users who're interested in them
|
|
self._remote_recvmap = {}
|
|
|
|
# map any user to a UserPresenceCache
|
|
self._user_cachemap = {}
|
|
self._user_cachemap_latest_serial = 0
|
|
|
|
def _get_or_make_usercache(self, user):
|
|
"""If the cache entry doesn't exist, initialise a new one."""
|
|
if user not in self._user_cachemap:
|
|
self._user_cachemap[user] = UserPresenceCache()
|
|
return self._user_cachemap[user]
|
|
|
|
def _get_or_offline_usercache(self, user):
|
|
"""If the cache entry doesn't exist, return an OFFLINE one but do not
|
|
store it into the cache."""
|
|
if user in self._user_cachemap:
|
|
return self._user_cachemap[user]
|
|
else:
|
|
statuscache = UserPresenceCache()
|
|
statuscache.update({"state": PresenceState.OFFLINE}, user)
|
|
return statuscache
|
|
|
|
def registered_user(self, user):
|
|
self.store.create_presence(user.localpart)
|
|
|
|
@defer.inlineCallbacks
|
|
def is_presence_visible(self, observer_user, observed_user):
|
|
defer.returnValue(True)
|
|
return
|
|
# FIXME (erikj): This code path absolutely kills the database.
|
|
|
|
assert(observed_user.is_mine)
|
|
|
|
if observer_user == observed_user:
|
|
defer.returnValue(True)
|
|
|
|
allowed_by_subscription = yield self.store.is_presence_visible(
|
|
observed_localpart=observed_user.localpart,
|
|
observer_userid=observer_user.to_string(),
|
|
)
|
|
|
|
if allowed_by_subscription:
|
|
defer.returnValue(True)
|
|
|
|
share_room = yield self.store.do_users_share_a_room(
|
|
[observer_user, observed_user]
|
|
)
|
|
|
|
defer.returnValue(share_room)
|
|
|
|
@defer.inlineCallbacks
|
|
def get_state(self, target_user, auth_user):
|
|
if target_user.is_mine:
|
|
visible = yield self.is_presence_visible(observer_user=auth_user,
|
|
observed_user=target_user
|
|
)
|
|
|
|
if visible:
|
|
state = yield self.store.get_presence_state(
|
|
target_user.localpart
|
|
)
|
|
else:
|
|
raise SynapseError(404, "Presence information not visible")
|
|
else:
|
|
# TODO(paul): Have remote server send us permissions set
|
|
state = self._get_or_offline_usercache(target_user).get_state()
|
|
|
|
if "mtime" in state and (state["mtime"] is not None):
|
|
state["mtime_age"] = int(
|
|
self.clock.time_msec() - state.pop("mtime")
|
|
)
|
|
defer.returnValue(state)
|
|
|
|
@defer.inlineCallbacks
|
|
def set_state(self, target_user, auth_user, state):
|
|
return
|
|
# TODO (erikj): Turn this back on. Why did we end up sending EDUs
|
|
# everywhere?
|
|
|
|
if not target_user.is_mine:
|
|
raise SynapseError(400, "User is not hosted on this Home Server")
|
|
|
|
if target_user != auth_user:
|
|
raise AuthError(400, "Cannot set another user's displayname")
|
|
|
|
# TODO(paul): Sanity-check 'state'
|
|
if "status_msg" not in state:
|
|
state["status_msg"] = None
|
|
|
|
for k in state.keys():
|
|
if k not in ("state", "status_msg"):
|
|
raise SynapseError(
|
|
400, "Unexpected presence state key '%s'" % (k,)
|
|
)
|
|
|
|
logger.debug("Updating presence state of %s to %s",
|
|
target_user.localpart, state["state"])
|
|
|
|
state_to_store = dict(state)
|
|
|
|
yield defer.DeferredList([
|
|
self.store.set_presence_state(
|
|
target_user.localpart, state_to_store
|
|
),
|
|
self.distributor.fire(
|
|
"collect_presencelike_data", target_user, state
|
|
),
|
|
])
|
|
|
|
state["mtime"] = self.clock.time_msec()
|
|
|
|
now_online = state["state"] != PresenceState.OFFLINE
|
|
was_polling = target_user in self._user_cachemap
|
|
|
|
if now_online and not was_polling:
|
|
self.start_polling_presence(target_user, state=state)
|
|
elif not now_online and was_polling:
|
|
self.stop_polling_presence(target_user)
|
|
|
|
# TODO(paul): perform a presence push as part of start/stop poll so
|
|
# we don't have to do this all the time
|
|
self.changed_presencelike_data(target_user, state)
|
|
|
|
def changed_presencelike_data(self, user, state):
|
|
statuscache = self._get_or_make_usercache(user)
|
|
|
|
self._user_cachemap_latest_serial += 1
|
|
statuscache.update(state, serial=self._user_cachemap_latest_serial)
|
|
|
|
self.push_presence(user, statuscache=statuscache)
|
|
|
|
def started_user_eventstream(self, user):
|
|
# TODO(paul): Use "last online" state
|
|
self.set_state(user, user, {"state": PresenceState.ONLINE})
|
|
|
|
def stopped_user_eventstream(self, user):
|
|
# TODO(paul): Save current state as "last online" state
|
|
self.set_state(user, user, {"state": PresenceState.OFFLINE})
|
|
|
|
@defer.inlineCallbacks
|
|
def user_joined_room(self, user, room_id):
|
|
localusers = set()
|
|
remotedomains = set()
|
|
|
|
rm_handler = self.homeserver.get_handlers().room_member_handler
|
|
yield rm_handler.fetch_room_distributions_into(room_id,
|
|
localusers=localusers, remotedomains=remotedomains,
|
|
ignore_user=user)
|
|
|
|
if user.is_mine:
|
|
yield self._send_presence_to_distribution(srcuser=user,
|
|
localusers=localusers, remotedomains=remotedomains,
|
|
statuscache=self._get_or_offline_usercache(user),
|
|
)
|
|
|
|
for srcuser in localusers:
|
|
yield self._send_presence(srcuser=srcuser, destuser=user,
|
|
statuscache=self._get_or_offline_usercache(srcuser),
|
|
)
|
|
|
|
@defer.inlineCallbacks
|
|
def send_invite(self, observer_user, observed_user):
|
|
if not observer_user.is_mine:
|
|
raise SynapseError(400, "User is not hosted on this Home Server")
|
|
|
|
yield self.store.add_presence_list_pending(
|
|
observer_user.localpart, observed_user.to_string()
|
|
)
|
|
|
|
if observed_user.is_mine:
|
|
yield self.invite_presence(observed_user, observer_user)
|
|
else:
|
|
yield self.federation.send_edu(
|
|
destination=observed_user.domain,
|
|
edu_type="m.presence_invite",
|
|
content={
|
|
"observed_user": observed_user.to_string(),
|
|
"observer_user": observer_user.to_string(),
|
|
}
|
|
)
|
|
|
|
@defer.inlineCallbacks
|
|
def _should_accept_invite(self, observed_user, observer_user):
|
|
if not observed_user.is_mine:
|
|
defer.returnValue(False)
|
|
|
|
row = yield self.store.has_presence_state(observed_user.localpart)
|
|
if not row:
|
|
defer.returnValue(False)
|
|
|
|
# TODO(paul): Eventually we'll ask the user's permission for this
|
|
# before accepting. For now just accept any invite request
|
|
defer.returnValue(True)
|
|
|
|
@defer.inlineCallbacks
|
|
def invite_presence(self, observed_user, observer_user):
|
|
accept = yield self._should_accept_invite(observed_user, observer_user)
|
|
|
|
if accept:
|
|
yield self.store.allow_presence_visible(
|
|
observed_user.localpart, observer_user.to_string()
|
|
)
|
|
|
|
if observer_user.is_mine:
|
|
if accept:
|
|
yield self.accept_presence(observed_user, observer_user)
|
|
else:
|
|
yield self.deny_presence(observed_user, observer_user)
|
|
else:
|
|
edu_type = "m.presence_accept" if accept else "m.presence_deny"
|
|
|
|
yield self.federation.send_edu(
|
|
destination=observer_user.domain,
|
|
edu_type=edu_type,
|
|
content={
|
|
"observed_user": observed_user.to_string(),
|
|
"observer_user": observer_user.to_string(),
|
|
}
|
|
)
|
|
|
|
@defer.inlineCallbacks
|
|
def accept_presence(self, observed_user, observer_user):
|
|
yield self.store.set_presence_list_accepted(
|
|
observer_user.localpart, observed_user.to_string()
|
|
)
|
|
|
|
self.start_polling_presence(observer_user, target_user=observed_user)
|
|
|
|
@defer.inlineCallbacks
|
|
def deny_presence(self, observed_user, observer_user):
|
|
yield self.store.del_presence_list(
|
|
observer_user.localpart, observed_user.to_string()
|
|
)
|
|
|
|
# TODO(paul): Inform the user somehow?
|
|
|
|
@defer.inlineCallbacks
|
|
def drop(self, observed_user, observer_user):
|
|
if not observer_user.is_mine:
|
|
raise SynapseError(400, "User is not hosted on this Home Server")
|
|
|
|
yield self.store.del_presence_list(
|
|
observer_user.localpart, observed_user.to_string()
|
|
)
|
|
|
|
self.stop_polling_presence(observer_user, target_user=observed_user)
|
|
|
|
@defer.inlineCallbacks
|
|
def get_presence_list(self, observer_user, accepted=None):
|
|
if not observer_user.is_mine:
|
|
raise SynapseError(400, "User is not hosted on this Home Server")
|
|
|
|
presence = yield self.store.get_presence_list(
|
|
observer_user.localpart, accepted=accepted
|
|
)
|
|
|
|
for p in presence:
|
|
observed_user = self.hs.parse_userid(p.pop("observed_user_id"))
|
|
p["observed_user"] = observed_user
|
|
p.update(self._get_or_offline_usercache(observed_user).get_state())
|
|
if "mtime" in p:
|
|
p["mtime_age"] = int(
|
|
self.clock.time_msec() - p.pop("mtime")
|
|
)
|
|
|
|
defer.returnValue(presence)
|
|
|
|
@defer.inlineCallbacks
|
|
def start_polling_presence(self, user, target_user=None, state=None):
|
|
logger.debug("Start polling for presence from %s", user)
|
|
|
|
if target_user:
|
|
target_users = set([target_user])
|
|
else:
|
|
presence = yield self.store.get_presence_list(
|
|
user.localpart, accepted=True
|
|
)
|
|
target_users = set([
|
|
self.hs.parse_userid(x["observed_user_id"]) for x in presence
|
|
])
|
|
|
|
# Also include people in all my rooms
|
|
|
|
rm_handler = self.homeserver.get_handlers().room_member_handler
|
|
room_ids = yield rm_handler.get_rooms_for_user(user)
|
|
|
|
for room_id in room_ids:
|
|
for member in (yield rm_handler.get_room_members(room_id)):
|
|
target_users.add(member)
|
|
|
|
if state is None:
|
|
state = yield self.store.get_presence_state(user.localpart)
|
|
|
|
localusers, remoteusers = partitionbool(
|
|
target_users,
|
|
lambda u: u.is_mine
|
|
)
|
|
|
|
for target_user in localusers:
|
|
self._start_polling_local(user, target_user)
|
|
|
|
deferreds = []
|
|
remoteusers_by_domain = partition(remoteusers, lambda u: u.domain)
|
|
for domain in remoteusers_by_domain:
|
|
remoteusers = remoteusers_by_domain[domain]
|
|
|
|
deferreds.append(self._start_polling_remote(
|
|
user, domain, remoteusers
|
|
))
|
|
|
|
yield defer.DeferredList(deferreds)
|
|
|
|
def _start_polling_local(self, user, target_user):
|
|
target_localpart = target_user.localpart
|
|
|
|
if not self.is_presence_visible(observer_user=user,
|
|
observed_user=target_user):
|
|
return
|
|
|
|
if target_localpart not in self._local_pushmap:
|
|
self._local_pushmap[target_localpart] = set()
|
|
|
|
self._local_pushmap[target_localpart].add(user)
|
|
|
|
self.push_update_to_clients(
|
|
observer_user=user,
|
|
observed_user=target_user,
|
|
statuscache=self._get_or_offline_usercache(target_user),
|
|
)
|
|
|
|
def _start_polling_remote(self, user, domain, remoteusers):
|
|
for u in remoteusers:
|
|
if u not in self._remote_recvmap:
|
|
self._remote_recvmap[u] = set()
|
|
|
|
self._remote_recvmap[u].add(user)
|
|
|
|
return self.federation.send_edu(
|
|
destination=domain,
|
|
edu_type="m.presence",
|
|
content={"poll": [u.to_string() for u in remoteusers]}
|
|
)
|
|
|
|
def stop_polling_presence(self, user, target_user=None):
|
|
logger.debug("Stop polling for presence from %s", user)
|
|
|
|
if not target_user or target_user.is_mine:
|
|
self._stop_polling_local(user, target_user=target_user)
|
|
|
|
deferreds = []
|
|
|
|
if target_user:
|
|
if target_user not in self._remote_recvmap:
|
|
return
|
|
target_users = set([target_user])
|
|
else:
|
|
target_users = self._remote_recvmap.keys()
|
|
|
|
remoteusers = [u for u in target_users
|
|
if user in self._remote_recvmap[u]]
|
|
remoteusers_by_domain = partition(remoteusers, lambda u: u.domain)
|
|
|
|
for domain in remoteusers_by_domain:
|
|
remoteusers = remoteusers_by_domain[domain]
|
|
|
|
deferreds.append(
|
|
self._stop_polling_remote(user, domain, remoteusers)
|
|
)
|
|
|
|
return defer.DeferredList(deferreds)
|
|
|
|
def _stop_polling_local(self, user, target_user):
|
|
for localpart in self._local_pushmap.keys():
|
|
if target_user and localpart != target_user.localpart:
|
|
continue
|
|
|
|
if user in self._local_pushmap[localpart]:
|
|
self._local_pushmap[localpart].remove(user)
|
|
|
|
if not self._local_pushmap[localpart]:
|
|
del self._local_pushmap[localpart]
|
|
|
|
def _stop_polling_remote(self, user, domain, remoteusers):
|
|
for u in remoteusers:
|
|
self._remote_recvmap[u].remove(user)
|
|
|
|
if not self._remote_recvmap[u]:
|
|
del self._remote_recvmap[u]
|
|
|
|
return self.federation.send_edu(
|
|
destination=domain,
|
|
edu_type="m.presence",
|
|
content={"unpoll": [u.to_string() for u in remoteusers]}
|
|
)
|
|
|
|
@defer.inlineCallbacks
|
|
def push_presence(self, user, statuscache):
|
|
assert(user.is_mine)
|
|
|
|
logger.debug("Pushing presence update from %s", user)
|
|
|
|
localusers = set(self._local_pushmap.get(user.localpart, set()))
|
|
remotedomains = set(self._remote_sendmap.get(user.localpart, set()))
|
|
|
|
# Reflect users' status changes back to themselves, so UIs look nice
|
|
# and also user is informed of server-forced pushes
|
|
localusers.add(user)
|
|
|
|
rm_handler = self.homeserver.get_handlers().room_member_handler
|
|
room_ids = yield rm_handler.get_rooms_for_user(user)
|
|
|
|
for room_id in room_ids:
|
|
yield rm_handler.fetch_room_distributions_into(
|
|
room_id, localusers=localusers, remotedomains=remotedomains,
|
|
ignore_user=user,
|
|
)
|
|
|
|
if not localusers and not remotedomains:
|
|
defer.returnValue(None)
|
|
|
|
yield self._send_presence_to_distribution(user,
|
|
localusers=localusers, remotedomains=remotedomains,
|
|
statuscache=statuscache
|
|
)
|
|
|
|
def _send_presence(self, srcuser, destuser, statuscache):
|
|
if destuser.is_mine:
|
|
self.push_update_to_clients(
|
|
observer_user=destuser,
|
|
observed_user=srcuser,
|
|
statuscache=statuscache)
|
|
return defer.succeed(None)
|
|
else:
|
|
return self._push_presence_remote(srcuser, destuser.domain,
|
|
state=statuscache.get_state()
|
|
)
|
|
|
|
@defer.inlineCallbacks
|
|
def _send_presence_to_distribution(self, srcuser, localusers=set(),
|
|
remotedomains=set(), statuscache=None):
|
|
|
|
for u in localusers:
|
|
logger.debug(" | push to local user %s", u)
|
|
self.push_update_to_clients(
|
|
observer_user=u,
|
|
observed_user=srcuser,
|
|
statuscache=statuscache,
|
|
)
|
|
|
|
deferreds = []
|
|
for domain in remotedomains:
|
|
logger.debug(" | push to remote domain %s", domain)
|
|
deferreds.append(self._push_presence_remote(srcuser, domain,
|
|
state=statuscache.get_state())
|
|
)
|
|
|
|
yield defer.DeferredList(deferreds)
|
|
|
|
@defer.inlineCallbacks
|
|
def _push_presence_remote(self, user, destination, state=None):
|
|
if state is None:
|
|
state = yield self.store.get_presence_state(user.localpart)
|
|
|
|
yield self.distributor.fire(
|
|
"collect_presencelike_data", user, state
|
|
)
|
|
|
|
if "mtime" in state:
|
|
state = dict(state)
|
|
state["mtime_age"] = int(
|
|
self.clock.time_msec() - state.pop("mtime")
|
|
)
|
|
|
|
yield self.federation.send_edu(
|
|
destination=destination,
|
|
edu_type="m.presence",
|
|
content={
|
|
"push": [
|
|
dict(user_id=user.to_string(), **state),
|
|
],
|
|
}
|
|
)
|
|
|
|
@defer.inlineCallbacks
|
|
def incoming_presence(self, origin, content):
|
|
deferreds = []
|
|
|
|
for push in content.get("push", []):
|
|
user = self.hs.parse_userid(push["user_id"])
|
|
|
|
logger.debug("Incoming presence update from %s", user)
|
|
|
|
observers = set(self._remote_recvmap.get(user, set()))
|
|
|
|
rm_handler = self.homeserver.get_handlers().room_member_handler
|
|
room_ids = yield rm_handler.get_rooms_for_user(user)
|
|
|
|
for room_id in room_ids:
|
|
yield rm_handler.fetch_room_distributions_into(
|
|
room_id, localusers=observers, ignore_user=user
|
|
)
|
|
|
|
if not observers:
|
|
break
|
|
|
|
state = dict(push)
|
|
del state["user_id"]
|
|
|
|
if "mtime_age" in state:
|
|
state["mtime"] = int(
|
|
self.clock.time_msec() - state.pop("mtime_age")
|
|
)
|
|
|
|
statuscache = self._get_or_make_usercache(user)
|
|
|
|
self._user_cachemap_latest_serial += 1
|
|
statuscache.update(state, serial=self._user_cachemap_latest_serial)
|
|
|
|
for observer_user in observers:
|
|
self.push_update_to_clients(
|
|
observer_user=observer_user,
|
|
observed_user=user,
|
|
statuscache=statuscache,
|
|
)
|
|
|
|
if state["state"] == PresenceState.OFFLINE:
|
|
del self._user_cachemap[user]
|
|
|
|
for poll in content.get("poll", []):
|
|
user = self.hs.parse_userid(poll)
|
|
|
|
if not user.is_mine:
|
|
continue
|
|
|
|
# TODO(paul) permissions checks
|
|
|
|
if not user in self._remote_sendmap:
|
|
self._remote_sendmap[user] = set()
|
|
|
|
self._remote_sendmap[user].add(origin)
|
|
|
|
deferreds.append(self._push_presence_remote(user, origin))
|
|
|
|
for unpoll in content.get("unpoll", []):
|
|
user = self.hs.parse_userid(unpoll)
|
|
|
|
if not user.is_mine:
|
|
continue
|
|
|
|
if user in self._remote_sendmap:
|
|
self._remote_sendmap[user].remove(origin)
|
|
|
|
if not self._remote_sendmap[user]:
|
|
del self._remote_sendmap[user]
|
|
|
|
yield defer.DeferredList(deferreds)
|
|
|
|
def push_update_to_clients(self, observer_user, observed_user,
|
|
statuscache):
|
|
statuscache.make_event(user=observed_user, clock=self.clock)
|
|
|
|
self.notifier.on_new_user_event(
|
|
observer_user.to_string(),
|
|
event_data=statuscache.make_event(
|
|
user=observed_user,
|
|
clock=self.clock
|
|
),
|
|
stream_type=PresenceStreamData,
|
|
store_id=statuscache.serial
|
|
)
|
|
|
|
|
|
class PresenceStreamData(StreamData):
|
|
def __init__(self, hs):
|
|
super(PresenceStreamData, self).__init__(hs)
|
|
self.presence = hs.get_handlers().presence_handler
|
|
|
|
def get_rows(self, user_id, from_key, to_key, limit, direction):
|
|
from_key = int(from_key)
|
|
to_key = int(to_key)
|
|
|
|
cachemap = self.presence._user_cachemap
|
|
|
|
# TODO(paul): limit, and filter by visibility
|
|
updates = [(k, cachemap[k]) for k in cachemap
|
|
if from_key < cachemap[k].serial <= to_key]
|
|
|
|
if updates:
|
|
clock = self.presence.clock
|
|
|
|
latest_serial = max([x[1].serial for x in updates])
|
|
data = [x[1].make_event(user=x[0], clock=clock) for x in updates]
|
|
return ((data, latest_serial))
|
|
else:
|
|
return (([], self.presence._user_cachemap_latest_serial))
|
|
|
|
def max_token(self):
|
|
return self.presence._user_cachemap_latest_serial
|
|
|
|
PresenceStreamData.EVENT_TYPE = PresenceStreamData
|
|
|
|
|
|
class UserPresenceCache(object):
|
|
"""Store an observed user's state and status message.
|
|
|
|
Includes the update timestamp.
|
|
"""
|
|
def __init__(self):
|
|
self.state = {}
|
|
self.serial = None
|
|
|
|
def update(self, state, serial):
|
|
assert("mtime_age" not in state)
|
|
|
|
self.state.update(state)
|
|
# Delete keys that are now 'None'
|
|
for k in self.state.keys():
|
|
if self.state[k] is None:
|
|
del self.state[k]
|
|
|
|
self.serial = serial
|
|
|
|
if "status_msg" in state:
|
|
self.status_msg = state["status_msg"]
|
|
else:
|
|
self.status_msg = None
|
|
|
|
def get_state(self):
|
|
# clone it so caller can't break our cache
|
|
return dict(self.state)
|
|
|
|
def make_event(self, user, clock):
|
|
content = self.get_state()
|
|
content["user_id"] = user.to_string()
|
|
|
|
if "mtime" in content:
|
|
content["mtime_age"] = int(
|
|
clock.time_msec() - content.pop("mtime")
|
|
)
|
|
|
|
return {"type": "m.presence", "content": content}
|