Merge branch 'develop' into babolivier/msc2326_bg_update

pull/6310/head
Brendan Abolivier 2019-11-04 18:09:50 +00:00
commit e252ffadbc
10 changed files with 256 additions and 93 deletions

1
changelog.d/6305.misc Normal file
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@ -0,0 +1 @@
Add some documentation about worker replication.

1
changelog.d/6318.misc Normal file
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@ -0,0 +1 @@
Remove the dependency on psutil and replace functionality with the stdlib `resource` module.

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@ -199,7 +199,20 @@ client (C):
#### REPLICATE (C)
Asks the server to replicate a given stream
Asks the server to replicate a given stream. The syntax is:
```
REPLICATE <stream_name> <token>
```
Where `<token>` may be either:
* a numeric stream_id to stream updates since (exclusive)
* `NOW` to stream all subsequent updates.
The `<stream_name>` is the name of a replication stream to subscribe
to (see [here](../synapse/replication/tcp/streams/_base.py) for a list
of streams). It can also be `ALL` to subscribe to all known streams,
in which case the `<token>` must be set to `NOW`.
#### USER_SYNC (C)

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@ -19,12 +19,13 @@ from __future__ import print_function
import gc
import logging
import math
import os
import resource
import sys
from six import iteritems
import psutil
from prometheus_client import Gauge
from twisted.application import service
@ -471,6 +472,87 @@ class SynapseService(service.Service):
return self._port.stopListening()
# Contains the list of processes we will be monitoring
# currently either 0 or 1
_stats_process = []
@defer.inlineCallbacks
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
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"] = yield hs.get_datastore().count_all_users()
total_nonbridged_users = yield hs.get_datastore().count_nonbridged_users()
stats["total_nonbridged_users"] = total_nonbridged_users
daily_user_type_results = yield hs.get_datastore().count_daily_user_type()
for name, count in iteritems(daily_user_type_results):
stats["daily_user_type_" + name] = count
room_count = yield hs.get_datastore().get_room_count()
stats["total_room_count"] = room_count
stats["daily_active_users"] = yield hs.get_datastore().count_daily_users()
stats["monthly_active_users"] = yield hs.get_datastore().count_monthly_users()
stats["daily_active_rooms"] = yield hs.get_datastore().count_daily_active_rooms()
stats["daily_messages"] = yield hs.get_datastore().count_daily_messages()
r30_results = yield hs.get_datastore().count_r30_users()
for name, count in iteritems(r30_results):
stats["r30_users_" + name] = count
daily_sent_messages = yield hs.get_datastore().count_daily_sent_messages()
stats["daily_sent_messages"] = daily_sent_messages
stats["cache_factor"] = CACHE_SIZE_FACTOR
stats["event_cache_size"] = hs.config.event_cache_size
#
# Performance statistics
#
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)
#
# Database version
#
stats["database_engine"] = hs.get_datastore().database_engine_name
stats["database_server_version"] = hs.get_datastore().get_server_version()
logger.info("Reporting stats to %s: %s" % (hs.config.report_stats_endpoint, stats))
try:
yield 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:
@ -497,91 +579,19 @@ def run(hs):
reactor.run = profile(reactor.run)
clock = hs.get_clock()
start_time = clock.time()
stats = {}
# Contains the list of processes we will be monitoring
# currently either 0 or 1
stats_process = []
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)
@defer.inlineCallbacks
def phone_stats_home():
logger.info("Gathering stats for reporting")
now = int(hs.get_clock().time())
uptime = int(now - start_time)
if uptime < 0:
uptime = 0
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
return run_as_background_process(
"phone_stats_home", phone_stats_home, hs, stats
)
stats["total_users"] = yield hs.get_datastore().count_all_users()
total_nonbridged_users = yield hs.get_datastore().count_nonbridged_users()
stats["total_nonbridged_users"] = total_nonbridged_users
daily_user_type_results = yield hs.get_datastore().count_daily_user_type()
for name, count in iteritems(daily_user_type_results):
stats["daily_user_type_" + name] = count
room_count = yield hs.get_datastore().get_room_count()
stats["total_room_count"] = room_count
stats["daily_active_users"] = yield hs.get_datastore().count_daily_users()
stats["monthly_active_users"] = yield hs.get_datastore().count_monthly_users()
stats[
"daily_active_rooms"
] = yield hs.get_datastore().count_daily_active_rooms()
stats["daily_messages"] = yield hs.get_datastore().count_daily_messages()
r30_results = yield hs.get_datastore().count_r30_users()
for name, count in iteritems(r30_results):
stats["r30_users_" + name] = count
daily_sent_messages = yield hs.get_datastore().count_daily_sent_messages()
stats["daily_sent_messages"] = daily_sent_messages
stats["cache_factor"] = CACHE_SIZE_FACTOR
stats["event_cache_size"] = hs.config.event_cache_size
if len(stats_process) > 0:
stats["memory_rss"] = 0
stats["cpu_average"] = 0
for process in stats_process:
stats["memory_rss"] += process.memory_info().rss
stats["cpu_average"] += int(process.cpu_percent(interval=None))
stats["database_engine"] = hs.get_datastore().database_engine_name
stats["database_server_version"] = hs.get_datastore().get_server_version()
logger.info(
"Reporting stats to %s: %s" % (hs.config.report_stats_endpoint, stats)
)
try:
yield 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 performance_stats_init():
try:
process = psutil.Process()
# Ensure we can fetch both, and make the initial request for cpu_percent
# so the next request will use this as the initial point.
process.memory_info().rss
process.cpu_percent(interval=None)
logger.info("report_stats can use psutil")
stats_process.append(process)
except (AttributeError):
logger.warning("Unable to read memory/cpu stats. Disabling reporting.")
def generate_user_daily_visit_stats():
return run_as_background_process(
@ -626,7 +636,7 @@ def run(hs):
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)
clock.looping_call(start_phone_stats_home, 3 * 60 * 60 * 1000, hs, stats)
# 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
@ -634,7 +644,7 @@ def run(hs):
# 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)
clock.call_later(5 * 60, start_phone_stats_home, hs, stats)
_base.start_reactor(
"synapse-homeserver",

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@ -61,7 +61,6 @@ REQUIREMENTS = [
"bcrypt>=3.1.0",
"pillow>=4.3.0",
"sortedcontainers>=1.4.4",
"psutil>=2.0.0",
"pymacaroons>=0.13.0",
"msgpack>=0.5.2",
"phonenumbers>=8.2.0",

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@ -14,6 +14,7 @@
# limitations under the License.
import logging
from typing import Dict
import six
@ -44,7 +45,14 @@ class BaseSlavedStore(SQLBaseStore):
self.hs = hs
def stream_positions(self):
def stream_positions(self) -> Dict[str, int]:
"""
Get the current positions of all the streams this store wants to subscribe to
Returns:
map from stream name to the most recent update we have for
that stream (ie, the point we want to start replicating from)
"""
pos = {}
if self._cache_id_gen:
pos["caches"] = self._cache_id_gen.get_current_token()

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@ -16,10 +16,17 @@
"""
import logging
from typing import Dict
from twisted.internet import defer
from twisted.internet.protocol import ReconnectingClientFactory
from synapse.replication.slave.storage._base import BaseSlavedStore
from synapse.replication.tcp.protocol import (
AbstractReplicationClientHandler,
ClientReplicationStreamProtocol,
)
from .commands import (
FederationAckCommand,
InvalidateCacheCommand,
@ -27,7 +34,6 @@ from .commands import (
UserIpCommand,
UserSyncCommand,
)
from .protocol import ClientReplicationStreamProtocol
logger = logging.getLogger(__name__)
@ -42,7 +48,7 @@ class ReplicationClientFactory(ReconnectingClientFactory):
maxDelay = 30 # Try at least once every N seconds
def __init__(self, hs, client_name, handler):
def __init__(self, hs, client_name, handler: AbstractReplicationClientHandler):
self.client_name = client_name
self.handler = handler
self.server_name = hs.config.server_name
@ -68,13 +74,13 @@ class ReplicationClientFactory(ReconnectingClientFactory):
ReconnectingClientFactory.clientConnectionFailed(self, connector, reason)
class ReplicationClientHandler(object):
class ReplicationClientHandler(AbstractReplicationClientHandler):
"""A base handler that can be passed to the ReplicationClientFactory.
By default proxies incoming replication data to the SlaveStore.
"""
def __init__(self, store):
def __init__(self, store: BaseSlavedStore):
self.store = store
# The current connection. None if we are currently (re)connecting
@ -138,11 +144,13 @@ class ReplicationClientHandler(object):
if d:
d.callback(data)
def get_streams_to_replicate(self):
def get_streams_to_replicate(self) -> Dict[str, int]:
"""Called when a new connection has been established and we need to
subscribe to streams.
Returns a dictionary of stream name to token.
Returns:
map from stream name to the most recent update we have for
that stream (ie, the point we want to start replicating from)
"""
args = self.store.stream_positions()
user_account_data = args.pop("user_account_data", None)

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@ -48,7 +48,7 @@ indicate which side is sending, these are *not* included on the wire::
> ERROR server stopping
* connection closed by server *
"""
import abc
import fcntl
import logging
import struct
@ -65,6 +65,7 @@ from twisted.python.failure import Failure
from synapse.logging.context import make_deferred_yieldable, run_in_background
from synapse.metrics import LaterGauge
from synapse.metrics.background_process_metrics import run_as_background_process
from synapse.util import Clock
from synapse.util.stringutils import random_string
from .commands import (
@ -558,11 +559,80 @@ class ServerReplicationStreamProtocol(BaseReplicationStreamProtocol):
self.streamer.lost_connection(self)
class AbstractReplicationClientHandler(metaclass=abc.ABCMeta):
"""
The interface for the handler that should be passed to
ClientReplicationStreamProtocol
"""
@abc.abstractmethod
def on_rdata(self, stream_name, token, rows):
"""Called to handle a batch of replication data with a given stream token.
Args:
stream_name (str): name of the replication stream for this batch of rows
token (int): stream token for this batch of rows
rows (list): a list of Stream.ROW_TYPE objects as returned by
Stream.parse_row.
Returns:
Deferred|None
"""
raise NotImplementedError()
@abc.abstractmethod
def on_position(self, stream_name, token):
"""Called when we get new position data."""
raise NotImplementedError()
@abc.abstractmethod
def on_sync(self, data):
"""Called when get a new SYNC command."""
raise NotImplementedError()
@abc.abstractmethod
def get_streams_to_replicate(self):
"""Called when a new connection has been established and we need to
subscribe to streams.
Returns:
map from stream name to the most recent update we have for
that stream (ie, the point we want to start replicating from)
"""
raise NotImplementedError()
@abc.abstractmethod
def get_currently_syncing_users(self):
"""Get the list of currently syncing users (if any). This is called
when a connection has been established and we need to send the
currently syncing users."""
raise NotImplementedError()
@abc.abstractmethod
def update_connection(self, connection):
"""Called when a connection has been established (or lost with None).
"""
raise NotImplementedError()
@abc.abstractmethod
def finished_connecting(self):
"""Called when we have successfully subscribed and caught up to all
streams we're interested in.
"""
raise NotImplementedError()
class ClientReplicationStreamProtocol(BaseReplicationStreamProtocol):
VALID_INBOUND_COMMANDS = VALID_SERVER_COMMANDS
VALID_OUTBOUND_COMMANDS = VALID_CLIENT_COMMANDS
def __init__(self, client_name, server_name, clock, handler):
def __init__(
self,
client_name: str,
server_name: str,
clock: Clock,
handler: AbstractReplicationClientHandler,
):
BaseReplicationStreamProtocol.__init__(self, clock)
self.client_name = client_name

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@ -221,6 +221,7 @@ class HomeServer(object):
self.hostname = hostname
self._building = {}
self._listening_services = []
self.start_time = None
self.clock = Clock(reactor)
self.distributor = Distributor()
@ -240,6 +241,7 @@ class HomeServer(object):
datastore = self.DATASTORE_CLASS(conn, self)
self.datastores = DataStores(datastore, conn, self)
conn.commit()
self.start_time = int(self.get_clock().time())
logger.info("Finished setting up.")
def setup_master(self):

51
tests/test_phone_home.py Normal file
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@ -0,0 +1,51 @@
# -*- coding: utf-8 -*-
# Copyright 2019 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 resource
import mock
from synapse.app.homeserver import phone_stats_home
from tests.unittest import HomeserverTestCase
class PhoneHomeStatsTestCase(HomeserverTestCase):
def test_performance_frozen_clock(self):
"""
If time doesn't move, don't error out.
"""
past_stats = [
(self.hs.get_clock().time(), resource.getrusage(resource.RUSAGE_SELF))
]
stats = {}
self.get_success(phone_stats_home(self.hs, stats, past_stats))
self.assertEqual(stats["cpu_average"], 0)
def test_performance_100(self):
"""
1 second of usage over 1 second is 100% CPU usage.
"""
real_res = resource.getrusage(resource.RUSAGE_SELF)
old_resource = mock.Mock(spec=real_res)
old_resource.ru_utime = real_res.ru_utime - 1
old_resource.ru_stime = real_res.ru_stime
old_resource.ru_maxrss = real_res.ru_maxrss
past_stats = [(self.hs.get_clock().time(), old_resource)]
stats = {}
self.reactor.advance(1)
self.get_success(phone_stats_home(self.hs, stats, past_stats))
self.assertApproximates(stats["cpu_average"], 100, tolerance=2.5)