diff --git a/synapse/app/phone_stats_home.py b/synapse/app/phone_stats_home.py
new file mode 100644
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+++ b/synapse/app/phone_stats_home.py
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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 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)
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