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# 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 typing import TYPE_CHECKING, List, Mapping, Sized, Tuple
from prometheus_client import Gauge
from synapse.metrics.background_process_metrics import wrap_as_background_process
from synapse.types import JsonDict
if TYPE_CHECKING:
from synapse.server import HomeServer
logger = logging.getLogger("synapse.app.homeserver")
# Contains the list of processes we will be monitoring
# currently either 0 or 1
_stats_process: List[Tuple[int, "resource.struct_rusage"]] = []
# 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",
)
@wrap_as_background_process("phone_stats_home")
async def phone_stats_home(
hs: "HomeServer",
stats: JsonDict,
stats_process: List[Tuple[int, "resource.struct_rusage"]] = _stats_process,
) -> None:
"""Collect usage statistics and send them to the configured endpoint.
Args:
hs: the HomeServer object to use for gathering usage data.
stats: the dict in which to store the statistics sent to the configured
endpoint. Mostly used in tests to figure out the data that is supposed to
be sent.
stats_process: statistics about resource usage of the process.
"""
logger.info("Gathering stats for reporting")
now = int(hs.get_clock().time())
# Ensure the homeserver has started.
assert hs.start_time is not None
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
#
store = hs.get_datastores().main
common_metrics = await hs.get_common_usage_metrics_manager().get_metrics()
stats["homeserver"] = hs.config.server.server_name
stats["server_context"] = hs.config.server.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 store.count_all_users()
total_nonbridged_users = await store.count_nonbridged_users()
stats["total_nonbridged_users"] = total_nonbridged_users
daily_user_type_results = await store.count_daily_user_type()
for name, count in daily_user_type_results.items():
stats["daily_user_type_" + name] = count
room_count = await store.get_room_count()
stats["total_room_count"] = room_count
stats["daily_active_users"] = common_metrics.daily_active_users
stats["monthly_active_users"] = await store.count_monthly_users()
daily_active_e2ee_rooms = await store.count_daily_active_e2ee_rooms()
stats["daily_active_e2ee_rooms"] = daily_active_e2ee_rooms
stats["daily_e2ee_messages"] = await store.count_daily_e2ee_messages()
daily_sent_e2ee_messages = await store.count_daily_sent_e2ee_messages()
stats["daily_sent_e2ee_messages"] = daily_sent_e2ee_messages
stats["daily_active_rooms"] = await store.count_daily_active_rooms()
stats["daily_messages"] = await store.count_daily_messages()
daily_sent_messages = await store.count_daily_sent_messages()
stats["daily_sent_messages"] = daily_sent_messages
r30v2_results = await store.count_r30v2_users()
for name, count in r30v2_results.items():
stats["r30v2_users_" + name] = count
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"] = store.db_pool.engine.module.__name__
stats["database_server_version"] = store.db_pool.engine.server_version
#
# Logging configuration
#
synapse_logger = logging.getLogger("synapse")
log_level = synapse_logger.getEffectiveLevel()
stats["log_level"] = logging.getLevelName(log_level)
logger.info(
"Reporting stats to %s: %s" % (hs.config.metrics.report_stats_endpoint, stats)
)
try:
await hs.get_proxied_http_client().put_json(
hs.config.metrics.report_stats_endpoint, stats
)
except Exception as e:
logger.warning("Error reporting stats: %s", e)
def start_phone_stats_home(hs: "HomeServer") -> None:
"""
Start the background tasks which report phone home stats.
"""
clock = hs.get_clock()
stats: JsonDict = {}
def performance_stats_init() -> None:
_stats_process.clear()
_stats_process.append(
(int(hs.get_clock().time()), resource.getrusage(resource.RUSAGE_SELF))
)
# 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(
hs.get_datastores().main.generate_user_daily_visits, 5 * 60 * 1000
)
# monthly active user limiting functionality
clock.looping_call(
hs.get_datastores().main.reap_monthly_active_users, 1000 * 60 * 60
)
hs.get_datastores().main.reap_monthly_active_users()
@wrap_as_background_process("generate_monthly_active_users")
async def generate_monthly_active_users() -> None:
current_mau_count = 0
current_mau_count_by_service: Mapping[str, int] = {}
reserved_users: Sized = ()
store = hs.get_datastores().main
if hs.config.server.limit_usage_by_mau or hs.config.server.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.server.max_mau_value))
if hs.config.server.limit_usage_by_mau or hs.config.server.mau_stats_only:
generate_monthly_active_users()
clock.looping_call(generate_monthly_active_users, 5 * 60 * 1000)
# End of monthly active user settings
if hs.config.metrics.report_stats:
logger.info("Scheduling stats reporting for 3 hour intervals")
clock.looping_call(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
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, phone_stats_home, hs, stats)
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