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Allow background tasks to be run on a separate worker. (#8369)

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Patrick Cloke 2020-10-02 08:23:15 -04:00 committed by GitHub
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1
changelog.d/8369.feature Normal file
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@ -0,0 +1 @@
Allow running background tasks in a separate worker process.

5
docs/sample_config.yaml
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@ -2504,6 +2504,11 @@ opentracing:
# events: worker1
# typing: worker1
# The worker that is used to run background tasks (e.g. cleaning up expired
# data). If not provided this defaults to the main process.
#
#run_background_tasks_on: worker1
# Configuration for Redis when using workers. This *must* be enabled when
# using workers (unless using old style direct TCP configuration).

17
docs/workers.md
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@ -319,6 +319,23 @@ stream_writers:
events: event_persister1
```
#### Background tasks
There is also *experimental* support for moving background tasks to a separate
worker. Background tasks are run periodically or started via replication. Exactly
which tasks are configured to run depends on your Synapse configuration (e.g. if
stats is enabled).
To enable this, the worker must have a `worker_name` and can be configured to run
background tasks. For example, to move background tasks to a dedicated worker,
the shared configuration would include:
```yaml
run_background_tasks_on: background_worker
```
You might also wish to investigate the `update_user_directory` and
`media_instance_running_background_jobs` settings.
### `synapse.app.pusher`

6
synapse/app/_base.py
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@ -28,6 +28,7 @@ from twisted.protocols.tls import TLSMemoryBIOFactory
import synapse
from synapse.app import check_bind_error
from synapse.app.phone_stats_home import start_phone_stats_home
from synapse.config.server import ListenerConfig
from synapse.crypto import context_factory
from synapse.logging.context import PreserveLoggingContext
@ -274,6 +275,11 @@ def start(hs: "synapse.server.HomeServer", listeners: Iterable[ListenerConfig]):
setup_sentry(hs)
setup_sdnotify(hs)
# If background tasks are running on the main process, start collecting the
# phone home stats.
if hs.config.run_background_tasks:
start_phone_stats_home(hs)
# We now freeze all allocated objects in the hopes that (almost)
# everything currently allocated are things that will be used for the
# rest of time. Doing so means less work each GC (hopefully).

1
synapse/app/admin_cmd.py
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@ -208,6 +208,7 @@ def start(config_options):
# Explicitly disable background processes
config.update_user_directory = False
config.run_background_tasks = False
config.start_pushers = False
config.send_federation = False

4
synapse/app/generic_worker.py
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@ -128,11 +128,13 @@ from synapse.rest.key.v2 import KeyApiV2Resource
from synapse.server import HomeServer, cache_in_self
from synapse.storage.databases.main.censor_events import CensorEventsStore
from synapse.storage.databases.main.media_repository import MediaRepositoryStore
from synapse.storage.databases.main.metrics import ServerMetricsStore
from synapse.storage.databases.main.monthly_active_users import (
MonthlyActiveUsersWorkerStore,
)
from synapse.storage.databases.main.presence import UserPresenceState
from synapse.storage.databases.main.search import SearchWorkerStore
from synapse.storage.databases.main.stats import StatsStore
from synapse.storage.databases.main.ui_auth import UIAuthWorkerStore
from synapse.storage.databases.main.user_directory import UserDirectoryStore
from synapse.types import ReadReceipt
@ -454,6 +456,7 @@ class GenericWorkerSlavedStore(
# FIXME(#3714): We need to add UserDirectoryStore as we write directly
# rather than going via the correct worker.
UserDirectoryStore,
StatsStore,
UIAuthWorkerStore,
SlavedDeviceInboxStore,
SlavedDeviceStore,
@ -476,6 +479,7 @@ class GenericWorkerSlavedStore(
SlavedFilteringStore,
MonthlyActiveUsersWorkerStore,
MediaRepositoryStore,
ServerMetricsStore,
SearchWorkerStore,
BaseSlavedStore,
):

182
synapse/app/homeserver.py
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@ -17,14 +17,10 @@
import gc
import logging
import math
import os
import resource
import sys
from typing import Iterable
from prometheus_client import Gauge
from twisted.application import service
from twisted.internet import defer, reactor
from twisted.python.failure import Failure
@ -60,7 +56,6 @@ from synapse.http.server import (
from synapse.http.site import SynapseSite
from synapse.logging.context import LoggingContext
from synapse.metrics import METRICS_PREFIX, MetricsResource, RegistryProxy
from synapse.metrics.background_process_metrics import run_as_background_process
from synapse.module_api import ModuleApi
from synapse.python_dependencies import check_requirements
from synapse.replication.http import REPLICATION_PREFIX, ReplicationRestResource
@ -334,20 +329,6 @@ class SynapseHomeServer(HomeServer):
logger.warning("Unrecognized listener type: %s", listener.type)
# Gauges to expose monthly active user control metrics
current_mau_gauge = Gauge("synapse_admin_mau:current", "Current MAU")
current_mau_by_service_gauge = Gauge(
"synapse_admin_mau_current_mau_by_service",
"Current MAU by service",
["app_service"],
)
max_mau_gauge = Gauge("synapse_admin_mau:max", "MAU Limit")
registered_reserved_users_mau_gauge = Gauge(
"synapse_admin_mau:registered_reserved_users",
"Registered users with reserved threepids",
)
def setup(config_options):
"""
Args:
@ -389,8 +370,6 @@ def setup(config_options):
except UpgradeDatabaseException as e:
quit_with_error("Failed to upgrade database: %s" % (e,))
hs.setup_master()
async def do_acme() -> bool:
"""
Reprovision an ACME certificate, if it's required.
@ -486,92 +465,6 @@ class SynapseService(service.Service):
return self._port.stopListening()
# Contains the list of processes we will be monitoring
# currently either 0 or 1
_stats_process = []
async def phone_stats_home(hs, stats, stats_process=_stats_process):
logger.info("Gathering stats for reporting")
now = int(hs.get_clock().time())
uptime = int(now - hs.start_time)
if uptime < 0:
uptime = 0
#
# Performance statistics. Keep this early in the function to maintain reliability of `test_performance_100` test.
#
old = stats_process[0]
new = (now, resource.getrusage(resource.RUSAGE_SELF))
stats_process[0] = new
# Get RSS in bytes
stats["memory_rss"] = new[1].ru_maxrss
# Get CPU time in % of a single core, not % of all cores
used_cpu_time = (new[1].ru_utime + new[1].ru_stime) - (
old[1].ru_utime + old[1].ru_stime
)
if used_cpu_time == 0 or new[0] == old[0]:
stats["cpu_average"] = 0
else:
stats["cpu_average"] = math.floor(used_cpu_time / (new[0] - old[0]) * 100)
#
# General statistics
#
stats["homeserver"] = hs.config.server_name
stats["server_context"] = hs.config.server_context
stats["timestamp"] = now
stats["uptime_seconds"] = uptime
version = sys.version_info
stats["python_version"] = "{}.{}.{}".format(
version.major, version.minor, version.micro
)
stats["total_users"] = await hs.get_datastore().count_all_users()
total_nonbridged_users = await hs.get_datastore().count_nonbridged_users()
stats["total_nonbridged_users"] = total_nonbridged_users
daily_user_type_results = await hs.get_datastore().count_daily_user_type()
for name, count in daily_user_type_results.items():
stats["daily_user_type_" + name] = count
room_count = await hs.get_datastore().get_room_count()
stats["total_room_count"] = room_count
stats["daily_active_users"] = await hs.get_datastore().count_daily_users()
stats["monthly_active_users"] = await hs.get_datastore().count_monthly_users()
stats["daily_active_rooms"] = await hs.get_datastore().count_daily_active_rooms()
stats["daily_messages"] = await hs.get_datastore().count_daily_messages()
r30_results = await hs.get_datastore().count_r30_users()
for name, count in r30_results.items():
stats["r30_users_" + name] = count
daily_sent_messages = await hs.get_datastore().count_daily_sent_messages()
stats["daily_sent_messages"] = daily_sent_messages
stats["cache_factor"] = hs.config.caches.global_factor
stats["event_cache_size"] = hs.config.caches.event_cache_size
#
# Database version
#
# This only reports info about the *main* database.
stats["database_engine"] = hs.get_datastore().db_pool.engine.module.__name__
stats["database_server_version"] = hs.get_datastore().db_pool.engine.server_version
logger.info("Reporting stats to %s: %s" % (hs.config.report_stats_endpoint, stats))
try:
await hs.get_proxied_http_client().put_json(
hs.config.report_stats_endpoint, stats
)
except Exception as e:
logger.warning("Error reporting stats: %s", e)
def run(hs):
PROFILE_SYNAPSE = False
if PROFILE_SYNAPSE:
@ -597,81 +490,6 @@ def run(hs):
ThreadPool._worker = profile(ThreadPool._worker)
reactor.run = profile(reactor.run)
clock = hs.get_clock()
stats = {}
def performance_stats_init():
_stats_process.clear()
_stats_process.append(
(int(hs.get_clock().time()), resource.getrusage(resource.RUSAGE_SELF))
)
def start_phone_stats_home():
return run_as_background_process(
"phone_stats_home", phone_stats_home, hs, stats
)
def generate_user_daily_visit_stats():
return run_as_background_process(
"generate_user_daily_visits", hs.get_datastore().generate_user_daily_visits
)
# Rather than update on per session basis, batch up the requests.
# If you increase the loop period, the accuracy of user_daily_visits
# table will decrease
clock.looping_call(generate_user_daily_visit_stats, 5 * 60 * 1000)
# monthly active user limiting functionality
def reap_monthly_active_users():
return run_as_background_process(
"reap_monthly_active_users", hs.get_datastore().reap_monthly_active_users
)
clock.looping_call(reap_monthly_active_users, 1000 * 60 * 60)
reap_monthly_active_users()
async def generate_monthly_active_users():
current_mau_count = 0
current_mau_count_by_service = {}
reserved_users = ()
store = hs.get_datastore()
if hs.config.limit_usage_by_mau or hs.config.mau_stats_only:
current_mau_count = await store.get_monthly_active_count()
current_mau_count_by_service = (
await store.get_monthly_active_count_by_service()
)
reserved_users = await store.get_registered_reserved_users()
current_mau_gauge.set(float(current_mau_count))
for app_service, count in current_mau_count_by_service.items():
current_mau_by_service_gauge.labels(app_service).set(float(count))
registered_reserved_users_mau_gauge.set(float(len(reserved_users)))
max_mau_gauge.set(float(hs.config.max_mau_value))
def start_generate_monthly_active_users():
return run_as_background_process(
"generate_monthly_active_users", generate_monthly_active_users
)
start_generate_monthly_active_users()
if hs.config.limit_usage_by_mau or hs.config.mau_stats_only:
clock.looping_call(start_generate_monthly_active_users, 5 * 60 * 1000)
# End of monthly active user settings
if hs.config.report_stats:
logger.info("Scheduling stats reporting for 3 hour intervals")
clock.looping_call(start_phone_stats_home, 3 * 60 * 60 * 1000)
# We need to defer this init for the cases that we daemonize
# otherwise the process ID we get is that of the non-daemon process
clock.call_later(0, performance_stats_init)
# We wait 5 minutes to send the first set of stats as the server can
# be quite busy the first few minutes
clock.call_later(5 * 60, start_phone_stats_home)
_base.start_reactor(
"synapse-homeserver",
soft_file_limit=hs.config.soft_file_limit,

202
synapse/app/phone_stats_home.py Normal file
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@ -0,0 +1,202 @@
# Copyright 2020 The Matrix.org Foundation C.I.C.
#
# 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
import math
import resource
import sys
from prometheus_client import Gauge
from synapse.metrics.background_process_metrics import run_as_background_process
logger = logging.getLogger("synapse.app.homeserver")
# Contains the list of processes we will be monitoring
# currently either 0 or 1
_stats_process = []
# Gauges to expose monthly active user control metrics
current_mau_gauge = Gauge("synapse_admin_mau:current", "Current MAU")
current_mau_by_service_gauge = Gauge(
"synapse_admin_mau_current_mau_by_service",
"Current MAU by service",
["app_service"],
)
max_mau_gauge = Gauge("synapse_admin_mau:max", "MAU Limit")
registered_reserved_users_mau_gauge = Gauge(
"synapse_admin_mau:registered_reserved_users",
"Registered users with reserved threepids",
)
async def phone_stats_home(hs, stats, stats_process=_stats_process):
logger.info("Gathering stats for reporting")
now = int(hs.get_clock().time())
uptime = int(now - hs.start_time)
if uptime < 0:
uptime = 0
#
# Performance statistics. Keep this early in the function to maintain reliability of `test_performance_100` test.
#
old = stats_process[0]
new = (now, resource.getrusage(resource.RUSAGE_SELF))
stats_process[0] = new
# Get RSS in bytes
stats["memory_rss"] = new[1].ru_maxrss
# Get CPU time in % of a single core, not % of all cores
used_cpu_time = (new[1].ru_utime + new[1].ru_stime) - (
old[1].ru_utime + old[1].ru_stime
)
if used_cpu_time == 0 or new[0] == old[0]:
stats["cpu_average"] = 0
else:
stats["cpu_average"] = math.floor(used_cpu_time / (new[0] - old[0]) * 100)
#
# General statistics
#
stats["homeserver"] = hs.config.server_name
stats["server_context"] = hs.config.server_context
stats["timestamp"] = now
stats["uptime_seconds"] = uptime
version = sys.version_info
stats["python_version"] = "{}.{}.{}".format(
version.major, version.minor, version.micro
)
stats["total_users"] = await hs.get_datastore().count_all_users()
total_nonbridged_users = await hs.get_datastore().count_nonbridged_users()
stats["total_nonbridged_users"] = total_nonbridged_users
daily_user_type_results = await hs.get_datastore().count_daily_user_type()
for name, count in daily_user_type_results.items():
stats["daily_user_type_" + name] = count
room_count = await hs.get_datastore().get_room_count()
stats["total_room_count"] = room_count
stats["daily_active_users"] = await hs.get_datastore().count_daily_users()
stats["monthly_active_users"] = await hs.get_datastore().count_monthly_users()
stats["daily_active_rooms"] = await hs.get_datastore().count_daily_active_rooms()
stats["daily_messages"] = await hs.get_datastore().count_daily_messages()
r30_results = await hs.get_datastore().count_r30_users()
for name, count in r30_results.items():
stats["r30_users_" + name] = count
daily_sent_messages = await hs.get_datastore().count_daily_sent_messages()
stats["daily_sent_messages"] = daily_sent_messages
stats["cache_factor"] = hs.config.caches.global_factor
stats["event_cache_size"] = hs.config.caches.event_cache_size
#
# Database version
#
# This only reports info about the *main* database.
stats["database_engine"] = hs.get_datastore().db_pool.engine.module.__name__
stats["database_server_version"] = hs.get_datastore().db_pool.engine.server_version
logger.info("Reporting stats to %s: %s" % (hs.config.report_stats_endpoint, stats))
try:
await hs.get_proxied_http_client().put_json(
hs.config.report_stats_endpoint, stats
)
except Exception as e:
logger.warning("Error reporting stats: %s", e)
def start_phone_stats_home(hs):
"""
Start the background tasks which report phone home stats.
"""
clock = hs.get_clock()
stats = {}
def performance_stats_init():
_stats_process.clear()
_stats_process.append(
(int(hs.get_clock().time()), resource.getrusage(resource.RUSAGE_SELF))
)
def start_phone_stats_home():
return run_as_background_process(
"phone_stats_home", phone_stats_home, hs, stats
)
def generate_user_daily_visit_stats():
return run_as_background_process(
"generate_user_daily_visits", hs.get_datastore().generate_user_daily_visits
)
# Rather than update on per session basis, batch up the requests.
# If you increase the loop period, the accuracy of user_daily_visits
# table will decrease
clock.looping_call(generate_user_daily_visit_stats, 5 * 60 * 1000)
# monthly active user limiting functionality
def reap_monthly_active_users():
return run_as_background_process(
"reap_monthly_active_users", hs.get_datastore().reap_monthly_active_users
)
clock.looping_call(reap_monthly_active_users, 1000 * 60 * 60)
reap_monthly_active_users()
async def generate_monthly_active_users():
current_mau_count = 0
current_mau_count_by_service = {}
reserved_users = ()
store = hs.get_datastore()
if hs.config.limit_usage_by_mau or hs.config.mau_stats_only:
current_mau_count = await store.get_monthly_active_count()
current_mau_count_by_service = (
await store.get_monthly_active_count_by_service()
)
reserved_users = await store.get_registered_reserved_users()
current_mau_gauge.set(float(current_mau_count))
for app_service, count in current_mau_count_by_service.items():
current_mau_by_service_gauge.labels(app_service).set(float(count))
registered_reserved_users_mau_gauge.set(float(len(reserved_users)))
max_mau_gauge.set(float(hs.config.max_mau_value))
def start_generate_monthly_active_users():
return run_as_background_process(
"generate_monthly_active_users", generate_monthly_active_users
)
if hs.config.limit_usage_by_mau or hs.config.mau_stats_only:
start_generate_monthly_active_users()
clock.looping_call(start_generate_monthly_active_users, 5 * 60 * 1000)
# End of monthly active user settings
if hs.config.report_stats:
logger.info("Scheduling stats reporting for 3 hour intervals")
clock.looping_call(start_phone_stats_home, 3 * 60 * 60 * 1000)
# We need to defer this init for the cases that we daemonize
# otherwise the process ID we get is that of the non-daemon process
clock.call_later(0, performance_stats_init)
# We wait 5 minutes to send the first set of stats as the server can
# be quite busy the first few minutes
clock.call_later(5 * 60, start_phone_stats_home)

18
synapse/config/workers.py
View file

@ -132,6 +132,19 @@ class WorkerConfig(Config):
self.events_shard_config = ShardedWorkerHandlingConfig(self.writers.events)
# Whether this worker should run background tasks or not.
#
# As a note for developers, the background tasks guarded by this should
# be able to run on only a single instance (meaning that they don't
# depend on any in-memory state of a particular worker).
#
# No effort is made to ensure only a single instance of these tasks is
# running.
background_tasks_instance = config.get("run_background_tasks_on") or "master"
self.run_background_tasks = (
self.worker_name is None and background_tasks_instance == "master"
) or self.worker_name == background_tasks_instance
def generate_config_section(self, config_dir_path, server_name, **kwargs):
return """\
## Workers ##
@ -167,6 +180,11 @@ class WorkerConfig(Config):
#stream_writers:
# events: worker1
# typing: worker1
# The worker that is used to run background tasks (e.g. cleaning up expired
# data). If not provided this defaults to the main process.
#
#run_background_tasks_on: worker1
"""
def read_arguments(self, args):

2
synapse/handlers/auth.py
View file

@ -212,7 +212,7 @@ class AuthHandler(BaseHandler):
self._clock = self.hs.get_clock()
# Expire old UI auth sessions after a period of time.
if hs.config.worker_app is None:
if hs.config.run_background_tasks:
self._clock.looping_call(
run_as_background_process,
5 * 60 * 1000,

2
synapse/handlers/stats.py
View file

@ -49,7 +49,7 @@ class StatsHandler:
# Guard to ensure we only process deltas one at a time
self._is_processing = False
if hs.config.stats_enabled:
if self.stats_enabled and hs.config.run_background_tasks:
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

17
synapse/server.py
View file

@ -185,7 +185,10 @@ class HomeServer(metaclass=abc.ABCMeta):
we are listening on to provide HTTP services.
"""
REQUIRED_ON_MASTER_STARTUP = ["user_directory_handler", "stats_handler"]
REQUIRED_ON_BACKGROUND_TASK_STARTUP = [
"auth",
"stats",
]
# This is overridden in derived application classes
# (such as synapse.app.homeserver.SynapseHomeServer) and gives the class to be
@ -251,14 +254,20 @@ class HomeServer(metaclass=abc.ABCMeta):
self.datastores = Databases(self.DATASTORE_CLASS, self)
logger.info("Finished setting up.")
def setup_master(self) -> None:
# Register background tasks required by this server. This must be done
# somewhat manually due to the background tasks not being registered
# unless handlers are instantiated.
if self.config.run_background_tasks:
self.setup_background_tasks()
def setup_background_tasks(self) -> None:
"""
Some handlers have side effects on instantiation (like registering
background updates). This function causes them to be fetched, and
therefore instantiated, to run those side effects.
"""
for i in self.REQUIRED_ON_MASTER_STARTUP:
getattr(self, "get_" + i)()
for i in self.REQUIRED_ON_BACKGROUND_TASK_STARTUP:
getattr(self, "get_" + i + "_handler")()
def get_reactor(self) -> twisted.internet.base.ReactorBase:
"""

191
synapse/storage/databases/main/__init__.py
View file

@ -15,9 +15,7 @@
# See the License for the specific language governing permissions and
# limitations under the License.
import calendar
import logging
import time
from typing import Any, Dict, List, Optional, Tuple
from synapse.api.constants import PresenceState
@ -268,9 +266,6 @@ class DataStore(
self._stream_order_on_start = self.get_room_max_stream_ordering()
self._min_stream_order_on_start = self.get_room_min_stream_ordering()
# Used in _generate_user_daily_visits to keep track of progress
self._last_user_visit_update = self._get_start_of_day()
def get_device_stream_token(self) -> int:
return self._device_list_id_gen.get_current_token()
@ -301,192 +296,6 @@ class DataStore(
return [UserPresenceState(**row) for row in rows]
async def count_daily_users(self) -> int:
"""
Counts the number of users who used this homeserver in the last 24 hours.
"""
yesterday = int(self._clock.time_msec()) - (1000 * 60 * 60 * 24)
return await self.db_pool.runInteraction(
"count_daily_users", self._count_users, yesterday
)
async def count_monthly_users(self) -> int:
"""
Counts the number of users who used this homeserver in the last 30 days.
Note this method is intended for phonehome metrics only and is different
from the mau figure in synapse.storage.monthly_active_users which,
amongst other things, includes a 3 day grace period before a user counts.
"""
thirty_days_ago = int(self._clock.time_msec()) - (1000 * 60 * 60 * 24 * 30)
return await self.db_pool.runInteraction(
"count_monthly_users", self._count_users, thirty_days_ago
)
def _count_users(self, txn, time_from):
"""
Returns number of users seen in the past time_from period
"""
sql = """
SELECT COALESCE(count(*), 0) FROM (
SELECT user_id FROM user_ips
WHERE last_seen > ?
GROUP BY user_id
) u
"""
txn.execute(sql, (time_from,))
(count,) = txn.fetchone()
return count
async def count_r30_users(self) -> Dict[str, int]:
"""
Counts the number of 30 day retained users, defined as:-
* Users who have created their accounts more than 30 days ago
* Where last seen at most 30 days ago
* Where account creation and last_seen are > 30 days apart
Returns:
A mapping of counts globally as well as broken out by platform.
"""
def _count_r30_users(txn):
thirty_days_in_secs = 86400 * 30
now = int(self._clock.time())
thirty_days_ago_in_secs = now - thirty_days_in_secs
sql = """
SELECT platform, COALESCE(count(*), 0) FROM (
SELECT
users.name, platform, users.creation_ts * 1000,
MAX(uip.last_seen)
FROM users
INNER JOIN (
SELECT
user_id,
last_seen,
CASE
WHEN user_agent LIKE '%%Android%%' THEN 'android'
WHEN user_agent LIKE '%%iOS%%' THEN 'ios'
WHEN user_agent LIKE '%%Electron%%' THEN 'electron'
WHEN user_agent LIKE '%%Mozilla%%' THEN 'web'
WHEN user_agent LIKE '%%Gecko%%' THEN 'web'
ELSE 'unknown'
END
AS platform
FROM user_ips
) uip
ON users.name = uip.user_id
AND users.appservice_id is NULL
AND users.creation_ts < ?
AND uip.last_seen/1000 > ?
AND (uip.last_seen/1000) - users.creation_ts > 86400 * 30
GROUP BY users.name, platform, users.creation_ts
) u GROUP BY platform
"""
results = {}
txn.execute(sql, (thirty_days_ago_in_secs, thirty_days_ago_in_secs))
for row in txn:
if row[0] == "unknown":
pass
results[row[0]] = row[1]
sql = """
SELECT COALESCE(count(*), 0) FROM (
SELECT users.name, users.creation_ts * 1000,
MAX(uip.last_seen)
FROM users
INNER JOIN (
SELECT
user_id,
last_seen
FROM user_ips
) uip
ON users.name = uip.user_id
AND appservice_id is NULL
AND users.creation_ts < ?
AND uip.last_seen/1000 > ?
AND (uip.last_seen/1000) - users.creation_ts > 86400 * 30
GROUP BY users.name, users.creation_ts
) u
"""
txn.execute(sql, (thirty_days_ago_in_secs, thirty_days_ago_in_secs))
(count,) = txn.fetchone()
results["all"] = count
return results
return await self.db_pool.runInteraction("count_r30_users", _count_r30_users)
def _get_start_of_day(self):
"""
Returns millisecond unixtime for start of UTC day.
"""
now = time.gmtime()
today_start = calendar.timegm((now.tm_year, now.tm_mon, now.tm_mday, 0, 0, 0))
return today_start * 1000
async def generate_user_daily_visits(self) -> None:
"""
Generates daily visit data for use in cohort/ retention analysis
"""
def _generate_user_daily_visits(txn):
logger.info("Calling _generate_user_daily_visits")
today_start = self._get_start_of_day()
a_day_in_milliseconds = 24 * 60 * 60 * 1000
now = self.clock.time_msec()
sql = """
INSERT INTO user_daily_visits (user_id, device_id, timestamp)
SELECT u.user_id, u.device_id, ?
FROM user_ips AS u
LEFT JOIN (
SELECT user_id, device_id, timestamp FROM user_daily_visits
WHERE timestamp = ?
) udv
ON u.user_id = udv.user_id AND u.device_id=udv.device_id
INNER JOIN users ON users.name=u.user_id
WHERE last_seen > ? AND last_seen <= ?
AND udv.timestamp IS NULL AND users.is_guest=0
AND users.appservice_id IS NULL
GROUP BY u.user_id, u.device_id
"""
# This means that the day has rolled over but there could still
# be entries from the previous day. There is an edge case
# where if the user logs in at 23:59 and overwrites their
# last_seen at 00:01 then they will not be counted in the
# previous day's stats - it is important that the query is run
# often to minimise this case.
if today_start > self._last_user_visit_update:
yesterday_start = today_start - a_day_in_milliseconds
txn.execute(
sql,
(
yesterday_start,
yesterday_start,
self._last_user_visit_update,
today_start,
),
)
self._last_user_visit_update = today_start
txn.execute(
sql, (today_start, today_start, self._last_user_visit_update, now)
)
# Update _last_user_visit_update to now. The reason to do this
# rather just clamping to the beginning of the day is to limit
# the size of the join - meaning that the query can be run more
# frequently
self._last_user_visit_update = now
await self.db_pool.runInteraction(
"generate_user_daily_visits", _generate_user_daily_visits
)
async def get_users(self) -> List[Dict[str, Any]]:
"""Function to retrieve a list of users in users table.

195
synapse/storage/databases/main/metrics.py
View file

@ -12,6 +12,10 @@
# 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 calendar
import logging
import time
from typing import Dict
from synapse.metrics import GaugeBucketCollector
from synapse.metrics.background_process_metrics import run_as_background_process
@ -21,6 +25,8 @@ from synapse.storage.databases.main.event_push_actions import (
EventPushActionsWorkerStore,
)
logger = logging.getLogger(__name__)
# Collect metrics on the number of forward extremities that exist.
_extremities_collecter = GaugeBucketCollector(
"synapse_forward_extremities",
@ -60,6 +66,9 @@ class ServerMetricsStore(EventPushActionsWorkerStore, SQLBaseStore):
hs.get_clock().looping_call(read_forward_extremities, 60 * 60 * 1000)
# Used in _generate_user_daily_visits to keep track of progress
self._last_user_visit_update = self._get_start_of_day()
async def _read_forward_extremities(self):
def fetch(txn):
txn.execute(
@ -137,3 +146,189 @@ class ServerMetricsStore(EventPushActionsWorkerStore, SQLBaseStore):
return count
return await self.db_pool.runInteraction("count_daily_active_rooms", _count)
async def count_daily_users(self) -> int:
"""
Counts the number of users who used this homeserver in the last 24 hours.
"""
yesterday = int(self._clock.time_msec()) - (1000 * 60 * 60 * 24)
return await self.db_pool.runInteraction(
"count_daily_users", self._count_users, yesterday
)
async def count_monthly_users(self) -> int:
"""
Counts the number of users who used this homeserver in the last 30 days.
Note this method is intended for phonehome metrics only and is different
from the mau figure in synapse.storage.monthly_active_users which,
amongst other things, includes a 3 day grace period before a user counts.
"""
thirty_days_ago = int(self._clock.time_msec()) - (1000 * 60 * 60 * 24 * 30)
return await self.db_pool.runInteraction(
"count_monthly_users", self._count_users, thirty_days_ago
)
def _count_users(self, txn, time_from):
"""
Returns number of users seen in the past time_from period
"""
sql = """
SELECT COALESCE(count(*), 0) FROM (
SELECT user_id FROM user_ips
WHERE last_seen > ?
GROUP BY user_id
) u
"""
txn.execute(sql, (time_from,))
(count,) = txn.fetchone()
return count
async def count_r30_users(self) -> Dict[str, int]:
"""
Counts the number of 30 day retained users, defined as:-
* Users who have created their accounts more than 30 days ago
* Where last seen at most 30 days ago
* Where account creation and last_seen are > 30 days apart
Returns:
A mapping of counts globally as well as broken out by platform.
"""
def _count_r30_users(txn):
thirty_days_in_secs = 86400 * 30
now = int(self._clock.time())
thirty_days_ago_in_secs = now - thirty_days_in_secs
sql = """
SELECT platform, COALESCE(count(*), 0) FROM (
SELECT
users.name, platform, users.creation_ts * 1000,
MAX(uip.last_seen)
FROM users
INNER JOIN (
SELECT
user_id,
last_seen,
CASE
WHEN user_agent LIKE '%%Android%%' THEN 'android'
WHEN user_agent LIKE '%%iOS%%' THEN 'ios'
WHEN user_agent LIKE '%%Electron%%' THEN 'electron'
WHEN user_agent LIKE '%%Mozilla%%' THEN 'web'
WHEN user_agent LIKE '%%Gecko%%' THEN 'web'
ELSE 'unknown'
END
AS platform
FROM user_ips
) uip
ON users.name = uip.user_id
AND users.appservice_id is NULL
AND users.creation_ts < ?
AND uip.last_seen/1000 > ?
AND (uip.last_seen/1000) - users.creation_ts > 86400 * 30
GROUP BY users.name, platform, users.creation_ts
) u GROUP BY platform
"""
results = {}
txn.execute(sql, (thirty_days_ago_in_secs, thirty_days_ago_in_secs))
for row in txn:
if row[0] == "unknown":
pass
results[row[0]] = row[1]
sql = """
SELECT COALESCE(count(*), 0) FROM (
SELECT users.name, users.creation_ts * 1000,
MAX(uip.last_seen)
FROM users
INNER JOIN (
SELECT
user_id,
last_seen
FROM user_ips
) uip
ON users.name = uip.user_id
AND appservice_id is NULL
AND users.creation_ts < ?
AND uip.last_seen/1000 > ?
AND (uip.last_seen/1000) - users.creation_ts > 86400 * 30
GROUP BY users.name, users.creation_ts
) u
"""
txn.execute(sql, (thirty_days_ago_in_secs, thirty_days_ago_in_secs))
(count,) = txn.fetchone()
results["all"] = count
return results
return await self.db_pool.runInteraction("count_r30_users", _count_r30_users)
def _get_start_of_day(self):
"""
Returns millisecond unixtime for start of UTC day.
"""
now = time.gmtime()
today_start = calendar.timegm((now.tm_year, now.tm_mon, now.tm_mday, 0, 0, 0))
return today_start * 1000
async def generate_user_daily_visits(self) -> None:
"""
Generates daily visit data for use in cohort/ retention analysis
"""
def _generate_user_daily_visits(txn):
logger.info("Calling _generate_user_daily_visits")
today_start = self._get_start_of_day()
a_day_in_milliseconds = 24 * 60 * 60 * 1000
now = self._clock.time_msec()
sql = """
INSERT INTO user_daily_visits (user_id, device_id, timestamp)
SELECT u.user_id, u.device_id, ?
FROM user_ips AS u
LEFT JOIN (
SELECT user_id, device_id, timestamp FROM user_daily_visits
WHERE timestamp = ?
) udv
ON u.user_id = udv.user_id AND u.device_id=udv.device_id
INNER JOIN users ON users.name=u.user_id
WHERE last_seen > ? AND last_seen <= ?
AND udv.timestamp IS NULL AND users.is_guest=0
AND users.appservice_id IS NULL
GROUP BY u.user_id, u.device_id
"""
# This means that the day has rolled over but there could still
# be entries from the previous day. There is an edge case
# where if the user logs in at 23:59 and overwrites their
# last_seen at 00:01 then they will not be counted in the
# previous day's stats - it is important that the query is run
# often to minimise this case.
if today_start > self._last_user_visit_update:
yesterday_start = today_start - a_day_in_milliseconds
txn.execute(
sql,
(
yesterday_start,
yesterday_start,
self._last_user_visit_update,
today_start,
),
)
self._last_user_visit_update = today_start
txn.execute(
sql, (today_start, today_start, self._last_user_visit_update, now)
)
# Update _last_user_visit_update to now. The reason to do this
# rather just clamping to the beginning of the day is to limit
# the size of the join - meaning that the query can be run more
# frequently
self._last_user_visit_update = now
await self.db_pool.runInteraction(
"generate_user_daily_visits", _generate_user_daily_visits
)

109
synapse/storage/databases/main/monthly_active_users.py
View file

@ -32,6 +32,9 @@ class MonthlyActiveUsersWorkerStore(SQLBaseStore):
self._clock = hs.get_clock()
self.hs = hs
self._limit_usage_by_mau = hs.config.limit_usage_by_mau
self._max_mau_value = hs.config.max_mau_value
@cached(num_args=0)
async def get_monthly_active_count(self) -> int:
"""Generates current count of monthly active users
@ -124,60 +127,6 @@ class MonthlyActiveUsersWorkerStore(SQLBaseStore):
desc="user_last_seen_monthly_active",
)
class MonthlyActiveUsersStore(MonthlyActiveUsersWorkerStore):
def __init__(self, database: DatabasePool, db_conn, hs):
super().__init__(database, db_conn, hs)
self._limit_usage_by_mau = hs.config.limit_usage_by_mau
self._mau_stats_only = hs.config.mau_stats_only
self._max_mau_value = hs.config.max_mau_value
# Do not add more reserved users than the total allowable number
# cur = LoggingTransaction(
self.db_pool.new_transaction(
db_conn,
"initialise_mau_threepids",
[],
[],
self._initialise_reserved_users,
hs.config.mau_limits_reserved_threepids[: self._max_mau_value],
)
def _initialise_reserved_users(self, txn, threepids):
"""Ensures that reserved threepids are accounted for in the MAU table, should
be called on start up.
Args:
txn (cursor):
threepids (list[dict]): List of threepid dicts to reserve
"""
# XXX what is this function trying to achieve? It upserts into
# monthly_active_users for each *registered* reserved mau user, but why?
#
# - shouldn't there already be an entry for each reserved user (at least
# if they have been active recently)?
#
# - if it's important that the timestamp is kept up to date, why do we only
# run this at startup?
for tp in threepids:
user_id = self.get_user_id_by_threepid_txn(txn, tp["medium"], tp["address"])
if user_id:
is_support = self.is_support_user_txn(txn, user_id)
if not is_support:
# We do this manually here to avoid hitting #6791
self.db_pool.simple_upsert_txn(
txn,
table="monthly_active_users",
keyvalues={"user_id": user_id},
values={"timestamp": int(self._clock.time_msec())},
)
else:
logger.warning("mau limit reserved threepid %s not found in db" % tp)
async def reap_monthly_active_users(self):
"""Cleans out monthly active user table to ensure that no stale
entries exist.
@ -257,6 +206,58 @@ class MonthlyActiveUsersStore(MonthlyActiveUsersWorkerStore):
"reap_monthly_active_users", _reap_users, reserved_users
)
class MonthlyActiveUsersStore(MonthlyActiveUsersWorkerStore):
def __init__(self, database: DatabasePool, db_conn, hs):
super().__init__(database, db_conn, hs)
self._mau_stats_only = hs.config.mau_stats_only
# Do not add more reserved users than the total allowable number
# cur = LoggingTransaction(
self.db_pool.new_transaction(
db_conn,
"initialise_mau_threepids",
[],
[],
self._initialise_reserved_users,
hs.config.mau_limits_reserved_threepids[: self._max_mau_value],
)
def _initialise_reserved_users(self, txn, threepids):
"""Ensures that reserved threepids are accounted for in the MAU table, should
be called on start up.
Args:
txn (cursor):
threepids (list[dict]): List of threepid dicts to reserve
"""
# XXX what is this function trying to achieve? It upserts into
# monthly_active_users for each *registered* reserved mau user, but why?
#
# - shouldn't there already be an entry for each reserved user (at least
# if they have been active recently)?
#
# - if it's important that the timestamp is kept up to date, why do we only
# run this at startup?
for tp in threepids:
user_id = self.get_user_id_by_threepid_txn(txn, tp["medium"], tp["address"])
if user_id:
is_support = self.is_support_user_txn(txn, user_id)
if not is_support:
# We do this manually here to avoid hitting #6791
self.db_pool.simple_upsert_txn(
txn,
table="monthly_active_users",
keyvalues={"user_id": user_id},
values={"timestamp": int(self._clock.time_msec())},
)
else:
logger.warning("mau limit reserved threepid %s not found in db" % tp)
async def upsert_monthly_active_user(self, user_id: str) -> None:
"""Updates or inserts the user into the monthly active user table, which
is used to track the current MAU usage of the server

24
synapse/storage/databases/main/room.py
View file

@ -192,6 +192,18 @@ class RoomWorkerStore(SQLBaseStore):
"count_public_rooms", _count_public_rooms_txn
)
async def get_room_count(self) -> int:
"""Retrieve the total number of rooms.
"""
def f(txn):
sql = "SELECT count(*) FROM rooms"
txn.execute(sql)
row = txn.fetchone()
return row[0] or 0
return await self.db_pool.runInteraction("get_rooms", f)
async def get_largest_public_rooms(
self,
network_tuple: Optional[ThirdPartyInstanceID],
@ -1292,18 +1304,6 @@ class RoomStore(RoomBackgroundUpdateStore, RoomWorkerStore, SearchStore):
)
self.hs.get_notifier().on_new_replication_data()
async def get_room_count(self) -> int:
"""Retrieve the total number of rooms.
"""
def f(txn):
sql = "SELECT count(*) FROM rooms"
txn.execute(sql)
row = txn.fetchone()
return row[0] or 0
return await self.db_pool.runInteraction("get_rooms", f)
async def add_event_report(
self,
room_id: str,

6
synapse/storage/databases/main/ui_auth.py
View file

@ -288,8 +288,6 @@ class UIAuthWorkerStore(SQLBaseStore):
)
return [(row["user_agent"], row["ip"]) for row in rows]
class UIAuthStore(UIAuthWorkerStore):
async def delete_old_ui_auth_sessions(self, expiration_time: int) -> None:
"""
Remove sessions which were last used earlier than the expiration time.
@ -339,3 +337,7 @@ class UIAuthStore(UIAuthWorkerStore):
iterable=session_ids,
keyvalues={},
)
class UIAuthStore(UIAuthWorkerStore):
pass

2
tests/test_phone_home.py
View file

@ -17,7 +17,7 @@ import resource
import mock
from synapse.app.homeserver import phone_stats_home
from synapse.app.phone_stats_home import phone_stats_home
from tests.unittest import HomeserverTestCase

2
tests/utils.py
View file

@ -276,7 +276,7 @@ def setup_test_homeserver(
hs.setup()
if homeserverToUse.__name__ == "TestHomeServer":
hs.setup_master()
hs.setup_background_tasks()
if isinstance(db_engine, PostgresEngine):
database = hs.get_datastores().databases[0]