mirror of
https://git.anonymousland.org/anonymousland/synapse.git
synced 2024-12-27 17:29:27 -05:00
75538813fc
* Fix background updates to handle redactions/rejections In background updates based on current state delta stream we need to handle that we may not have all the events (or at least that `get_events` may raise an exception).
334 lines
13 KiB
Python
334 lines
13 KiB
Python
# -*- coding: utf-8 -*-
|
|
# Copyright 2018 New Vector Ltd
|
|
#
|
|
# 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.
|
|
|
|
import logging
|
|
|
|
from twisted.internet import defer
|
|
|
|
from synapse.api.constants import EventTypes, JoinRules, Membership
|
|
from synapse.handlers.state_deltas import StateDeltasHandler
|
|
from synapse.metrics import event_processing_positions
|
|
from synapse.metrics.background_process_metrics import run_as_background_process
|
|
from synapse.types import UserID
|
|
from synapse.util.metrics import Measure
|
|
|
|
logger = logging.getLogger(__name__)
|
|
|
|
|
|
class StatsHandler(StateDeltasHandler):
|
|
"""Handles keeping the *_stats tables updated with a simple time-series of
|
|
information about the users, rooms and media on the server, such that admins
|
|
have some idea of who is consuming their resources.
|
|
|
|
Heavily derived from UserDirectoryHandler
|
|
"""
|
|
|
|
def __init__(self, hs):
|
|
super(StatsHandler, self).__init__(hs)
|
|
self.hs = hs
|
|
self.store = hs.get_datastore()
|
|
self.state = hs.get_state_handler()
|
|
self.server_name = hs.hostname
|
|
self.clock = hs.get_clock()
|
|
self.notifier = hs.get_notifier()
|
|
self.is_mine_id = hs.is_mine_id
|
|
self.stats_bucket_size = hs.config.stats_bucket_size
|
|
|
|
# The current position in the current_state_delta stream
|
|
self.pos = None
|
|
|
|
# Guard to ensure we only process deltas one at a time
|
|
self._is_processing = False
|
|
|
|
if hs.config.stats_enabled:
|
|
self.notifier.add_replication_callback(self.notify_new_event)
|
|
|
|
# We kick this off so that we don't have to wait for a change before
|
|
# we start populating stats
|
|
self.clock.call_later(0, self.notify_new_event)
|
|
|
|
def notify_new_event(self):
|
|
"""Called when there may be more deltas to process
|
|
"""
|
|
if not self.hs.config.stats_enabled:
|
|
return
|
|
|
|
if self._is_processing:
|
|
return
|
|
|
|
@defer.inlineCallbacks
|
|
def process():
|
|
try:
|
|
yield self._unsafe_process()
|
|
finally:
|
|
self._is_processing = False
|
|
|
|
self._is_processing = True
|
|
run_as_background_process("stats.notify_new_event", process)
|
|
|
|
@defer.inlineCallbacks
|
|
def _unsafe_process(self):
|
|
# If self.pos is None then means we haven't fetched it from DB
|
|
if self.pos is None:
|
|
self.pos = yield self.store.get_stats_stream_pos()
|
|
|
|
# If still None then the initial background update hasn't happened yet
|
|
if self.pos is None:
|
|
defer.returnValue(None)
|
|
|
|
# Loop round handling deltas until we're up to date
|
|
while True:
|
|
with Measure(self.clock, "stats_delta"):
|
|
deltas = yield self.store.get_current_state_deltas(self.pos)
|
|
if not deltas:
|
|
return
|
|
|
|
logger.info("Handling %d state deltas", len(deltas))
|
|
yield self._handle_deltas(deltas)
|
|
|
|
self.pos = deltas[-1]["stream_id"]
|
|
yield self.store.update_stats_stream_pos(self.pos)
|
|
|
|
event_processing_positions.labels("stats").set(self.pos)
|
|
|
|
@defer.inlineCallbacks
|
|
def _handle_deltas(self, deltas):
|
|
"""
|
|
Called with the state deltas to process
|
|
"""
|
|
for delta in deltas:
|
|
typ = delta["type"]
|
|
state_key = delta["state_key"]
|
|
room_id = delta["room_id"]
|
|
event_id = delta["event_id"]
|
|
stream_id = delta["stream_id"]
|
|
prev_event_id = delta["prev_event_id"]
|
|
stream_pos = delta["stream_id"]
|
|
|
|
logger.debug("Handling: %r %r, %s", typ, state_key, event_id)
|
|
|
|
token = yield self.store.get_earliest_token_for_room_stats(room_id)
|
|
|
|
# If the earliest token to begin from is larger than our current
|
|
# stream ID, skip processing this delta.
|
|
if token is not None and token >= stream_id:
|
|
logger.debug(
|
|
"Ignoring: %s as earlier than this room's initial ingestion event",
|
|
event_id,
|
|
)
|
|
continue
|
|
|
|
if event_id is None and prev_event_id is None:
|
|
# Errr...
|
|
continue
|
|
|
|
event_content = {}
|
|
|
|
if event_id is not None:
|
|
event = yield self.store.get_event(event_id, allow_none=True)
|
|
if event:
|
|
event_content = event.content or {}
|
|
|
|
# We use stream_pos here rather than fetch by event_id as event_id
|
|
# may be None
|
|
now = yield self.store.get_received_ts_by_stream_pos(stream_pos)
|
|
|
|
# quantise time to the nearest bucket
|
|
now = (now // 1000 // self.stats_bucket_size) * self.stats_bucket_size
|
|
|
|
if typ == EventTypes.Member:
|
|
# we could use _get_key_change here but it's a bit inefficient
|
|
# given we're not testing for a specific result; might as well
|
|
# just grab the prev_membership and membership strings and
|
|
# compare them.
|
|
prev_event_content = {}
|
|
if prev_event_id is not None:
|
|
prev_event = yield self.store.get_event(
|
|
prev_event_id, allow_none=True,
|
|
)
|
|
if prev_event:
|
|
prev_event_content = prev_event.content
|
|
|
|
membership = event_content.get("membership", Membership.LEAVE)
|
|
prev_membership = prev_event_content.get("membership", Membership.LEAVE)
|
|
|
|
if prev_membership == membership:
|
|
continue
|
|
|
|
if prev_membership == Membership.JOIN:
|
|
yield self.store.update_stats_delta(
|
|
now, "room", room_id, "joined_members", -1
|
|
)
|
|
elif prev_membership == Membership.INVITE:
|
|
yield self.store.update_stats_delta(
|
|
now, "room", room_id, "invited_members", -1
|
|
)
|
|
elif prev_membership == Membership.LEAVE:
|
|
yield self.store.update_stats_delta(
|
|
now, "room", room_id, "left_members", -1
|
|
)
|
|
elif prev_membership == Membership.BAN:
|
|
yield self.store.update_stats_delta(
|
|
now, "room", room_id, "banned_members", -1
|
|
)
|
|
else:
|
|
err = "%s is not a valid prev_membership" % (repr(prev_membership),)
|
|
logger.error(err)
|
|
raise ValueError(err)
|
|
|
|
if membership == Membership.JOIN:
|
|
yield self.store.update_stats_delta(
|
|
now, "room", room_id, "joined_members", +1
|
|
)
|
|
elif membership == Membership.INVITE:
|
|
yield self.store.update_stats_delta(
|
|
now, "room", room_id, "invited_members", +1
|
|
)
|
|
elif membership == Membership.LEAVE:
|
|
yield self.store.update_stats_delta(
|
|
now, "room", room_id, "left_members", +1
|
|
)
|
|
elif membership == Membership.BAN:
|
|
yield self.store.update_stats_delta(
|
|
now, "room", room_id, "banned_members", +1
|
|
)
|
|
else:
|
|
err = "%s is not a valid membership" % (repr(membership),)
|
|
logger.error(err)
|
|
raise ValueError(err)
|
|
|
|
user_id = state_key
|
|
if self.is_mine_id(user_id):
|
|
# update user_stats as it's one of our users
|
|
public = yield self._is_public_room(room_id)
|
|
|
|
if membership == Membership.LEAVE:
|
|
yield self.store.update_stats_delta(
|
|
now,
|
|
"user",
|
|
user_id,
|
|
"public_rooms" if public else "private_rooms",
|
|
-1,
|
|
)
|
|
elif membership == Membership.JOIN:
|
|
yield self.store.update_stats_delta(
|
|
now,
|
|
"user",
|
|
user_id,
|
|
"public_rooms" if public else "private_rooms",
|
|
+1,
|
|
)
|
|
|
|
elif typ == EventTypes.Create:
|
|
# Newly created room. Add it with all blank portions.
|
|
yield self.store.update_room_state(
|
|
room_id,
|
|
{
|
|
"join_rules": None,
|
|
"history_visibility": None,
|
|
"encryption": None,
|
|
"name": None,
|
|
"topic": None,
|
|
"avatar": None,
|
|
"canonical_alias": None,
|
|
},
|
|
)
|
|
|
|
elif typ == EventTypes.JoinRules:
|
|
yield self.store.update_room_state(
|
|
room_id, {"join_rules": event_content.get("join_rule")}
|
|
)
|
|
|
|
is_public = yield self._get_key_change(
|
|
prev_event_id, event_id, "join_rule", JoinRules.PUBLIC
|
|
)
|
|
if is_public is not None:
|
|
yield self.update_public_room_stats(now, room_id, is_public)
|
|
|
|
elif typ == EventTypes.RoomHistoryVisibility:
|
|
yield self.store.update_room_state(
|
|
room_id,
|
|
{"history_visibility": event_content.get("history_visibility")},
|
|
)
|
|
|
|
is_public = yield self._get_key_change(
|
|
prev_event_id, event_id, "history_visibility", "world_readable"
|
|
)
|
|
if is_public is not None:
|
|
yield self.update_public_room_stats(now, room_id, is_public)
|
|
|
|
elif typ == EventTypes.Encryption:
|
|
yield self.store.update_room_state(
|
|
room_id, {"encryption": event_content.get("algorithm")}
|
|
)
|
|
elif typ == EventTypes.Name:
|
|
yield self.store.update_room_state(
|
|
room_id, {"name": event_content.get("name")}
|
|
)
|
|
elif typ == EventTypes.Topic:
|
|
yield self.store.update_room_state(
|
|
room_id, {"topic": event_content.get("topic")}
|
|
)
|
|
elif typ == EventTypes.RoomAvatar:
|
|
yield self.store.update_room_state(
|
|
room_id, {"avatar": event_content.get("url")}
|
|
)
|
|
elif typ == EventTypes.CanonicalAlias:
|
|
yield self.store.update_room_state(
|
|
room_id, {"canonical_alias": event_content.get("alias")}
|
|
)
|
|
|
|
@defer.inlineCallbacks
|
|
def update_public_room_stats(self, ts, room_id, is_public):
|
|
"""
|
|
Increment/decrement a user's number of public rooms when a room they are
|
|
in changes to/from public visibility.
|
|
|
|
Args:
|
|
ts (int): Timestamp in seconds
|
|
room_id (str)
|
|
is_public (bool)
|
|
"""
|
|
# For now, blindly iterate over all local users in the room so that
|
|
# we can handle the whole problem of copying buckets over as needed
|
|
user_ids = yield self.store.get_users_in_room(room_id)
|
|
|
|
for user_id in user_ids:
|
|
if self.hs.is_mine(UserID.from_string(user_id)):
|
|
yield self.store.update_stats_delta(
|
|
ts, "user", user_id, "public_rooms", +1 if is_public else -1
|
|
)
|
|
yield self.store.update_stats_delta(
|
|
ts, "user", user_id, "private_rooms", -1 if is_public else +1
|
|
)
|
|
|
|
@defer.inlineCallbacks
|
|
def _is_public_room(self, room_id):
|
|
join_rules = yield self.state.get_current_state(room_id, EventTypes.JoinRules)
|
|
history_visibility = yield self.state.get_current_state(
|
|
room_id, EventTypes.RoomHistoryVisibility
|
|
)
|
|
|
|
if (join_rules and join_rules.content.get("join_rule") == JoinRules.PUBLIC) or (
|
|
(
|
|
history_visibility
|
|
and history_visibility.content.get("history_visibility")
|
|
== "world_readable"
|
|
)
|
|
):
|
|
defer.returnValue(True)
|
|
else:
|
|
defer.returnValue(False)
|