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Cache set of users whose presence the other user should see

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This commit is contained in:
Erik Johnston 2017-03-15 15:29:19 +00:00
parent e892457a03
commit f83ac78201
1 changed files with 27 additions and 13 deletions
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40
synapse/handlers/presence.py
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@ -29,6 +29,7 @@ from synapse.api.errors import SynapseError
from synapse.api.constants import PresenceState
from synapse.storage.presence import UserPresenceState
from synapse.util.caches.descriptors import cachedInlineCallbacks
from synapse.util.logcontext import preserve_fn
from synapse.util.logutils import log_function
from synapse.util.metrics import Measure
@ -1031,7 +1032,6 @@ class PresenceEventSource(object):
# sending down the rare duplicate is not a concern.
with Measure(self.clock, "presence.get_new_events"):
user_id = user.to_string()
if from_key is not None:
from_key = int(from_key)
@ -1040,18 +1040,7 @@ class PresenceEventSource(object):
max_token = self.store.get_current_presence_token()
plist = yield self.store.get_presence_list_accepted(user.localpart)
users_interested_in = set(row["observed_user_id"] for row in plist)
users_interested_in.add(user_id) # So that we receive our own presence
users_who_share_room = yield self.store.get_users_who_share_room_with_user(
user_id
)
users_interested_in.update(users_who_share_room)
if explicit_room_id:
user_ids = yield self.store.get_users_in_room(explicit_room_id)
users_interested_in.update(user_ids)
users_interested_in = yield self._get_interested_in(user, explicit_room_id)
user_ids_changed = set()
changed = None
@ -1093,6 +1082,31 @@ class PresenceEventSource(object):
def get_pagination_rows(self, user, pagination_config, key):
return self.get_new_events(user, from_key=None, include_offline=False)
@cachedInlineCallbacks(num_args=2, cache_context=True)
def _get_interested_in(self, user, explicit_room_id, cache_context):
"""Returns the set of users that the given user should see presence
updates for
"""
user_id = user.to_string()
plist = yield self.store.get_presence_list_accepted(
user.localpart, on_invalidate=cache_context.invalidate,
)
users_interested_in = set(row["observed_user_id"] for row in plist)
users_interested_in.add(user_id) # So that we receive our own presence
users_who_share_room = yield self.store.get_users_who_share_room_with_user(
user_id, on_invalidate=cache_context.invalidate,
)
users_interested_in.update(users_who_share_room)
if explicit_room_id:
user_ids = yield self.store.get_users_in_room(
explicit_room_id, on_invalidate=cache_context.invalidate,
)
users_interested_in.update(user_ids)
defer.returnValue(users_interested_in)
def handle_timeouts(user_states, is_mine_fn, syncing_user_ids, now):
"""Checks the presence of users that have timed out and updates as