mirror of
https://git.anonymousland.org/anonymousland/synapse.git
synced 2024-10-01 11:49:51 -04:00
285 lines
7.8 KiB
Python
285 lines
7.8 KiB
Python
# -*- coding: utf-8 -*-
|
|
# Copyright 2015, 2016 OpenMarket 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
|
|
import functools
|
|
import time
|
|
import gc
|
|
import os
|
|
import platform
|
|
import attr
|
|
|
|
from prometheus_client import Gauge, Histogram, Counter
|
|
from prometheus_client.core import GaugeMetricFamily, REGISTRY
|
|
|
|
from twisted.internet import reactor
|
|
|
|
|
|
logger = logging.getLogger(__name__)
|
|
|
|
running_on_pypy = platform.python_implementation() == "PyPy"
|
|
all_metrics = []
|
|
all_collectors = []
|
|
all_gauges = {}
|
|
|
|
HAVE_PROC_SELF_STAT = os.path.exists("/proc/self/stat")
|
|
|
|
|
|
class RegistryProxy(object):
|
|
|
|
@staticmethod
|
|
def collect():
|
|
for metric in REGISTRY.collect():
|
|
if not metric.name.startswith("__"):
|
|
yield metric
|
|
|
|
|
|
@attr.s(hash=True)
|
|
class LaterGauge(object):
|
|
|
|
name = attr.ib()
|
|
desc = attr.ib()
|
|
labels = attr.ib(hash=False)
|
|
caller = attr.ib()
|
|
|
|
def collect(self):
|
|
|
|
g = GaugeMetricFamily(self.name, self.desc, labels=self.labels)
|
|
|
|
try:
|
|
calls = self.caller()
|
|
except Exception:
|
|
logger.exception(
|
|
"Exception running callback for LaterGauge(%s)",
|
|
self.name,
|
|
)
|
|
yield g
|
|
return
|
|
|
|
if isinstance(calls, dict):
|
|
for k, v in calls.items():
|
|
g.add_metric(k, v)
|
|
else:
|
|
g.add_metric([], calls)
|
|
|
|
yield g
|
|
|
|
def __attrs_post_init__(self):
|
|
self._register()
|
|
|
|
def _register(self):
|
|
if self.name in all_gauges.keys():
|
|
logger.warning("%s already registered, reregistering" % (self.name,))
|
|
REGISTRY.unregister(all_gauges.pop(self.name))
|
|
|
|
REGISTRY.register(self)
|
|
all_gauges[self.name] = self
|
|
|
|
|
|
#
|
|
# Detailed CPU metrics
|
|
#
|
|
|
|
class CPUMetrics(object):
|
|
|
|
def __init__(self):
|
|
ticks_per_sec = 100
|
|
try:
|
|
# Try and get the system config
|
|
ticks_per_sec = os.sysconf('SC_CLK_TCK')
|
|
except (ValueError, TypeError, AttributeError):
|
|
pass
|
|
|
|
self.ticks_per_sec = ticks_per_sec
|
|
|
|
def collect(self):
|
|
if not HAVE_PROC_SELF_STAT:
|
|
return
|
|
|
|
with open("/proc/self/stat") as s:
|
|
line = s.read()
|
|
raw_stats = line.split(") ", 1)[1].split(" ")
|
|
|
|
user = GaugeMetricFamily("process_cpu_user_seconds_total", "")
|
|
user.add_metric([], float(raw_stats[11]) / self.ticks_per_sec)
|
|
yield user
|
|
|
|
sys = GaugeMetricFamily("process_cpu_system_seconds_total", "")
|
|
sys.add_metric([], float(raw_stats[12]) / self.ticks_per_sec)
|
|
yield sys
|
|
|
|
|
|
REGISTRY.register(CPUMetrics())
|
|
|
|
#
|
|
# Python GC metrics
|
|
#
|
|
|
|
gc_unreachable = Gauge("python_gc_unreachable_total", "Unreachable GC objects", ["gen"])
|
|
gc_time = Histogram(
|
|
"python_gc_time",
|
|
"Time taken to GC (sec)",
|
|
["gen"],
|
|
buckets=[0.0025, 0.005, 0.01, 0.025, 0.05, 0.10, 0.25, 0.50, 1.00, 2.50,
|
|
5.00, 7.50, 15.00, 30.00, 45.00, 60.00],
|
|
)
|
|
|
|
|
|
class GCCounts(object):
|
|
|
|
def collect(self):
|
|
cm = GaugeMetricFamily("python_gc_counts", "GC object counts", labels=["gen"])
|
|
for n, m in enumerate(gc.get_count()):
|
|
cm.add_metric([str(n)], m)
|
|
|
|
yield cm
|
|
|
|
|
|
REGISTRY.register(GCCounts())
|
|
|
|
#
|
|
# Twisted reactor metrics
|
|
#
|
|
|
|
tick_time = Histogram(
|
|
"python_twisted_reactor_tick_time",
|
|
"Tick time of the Twisted reactor (sec)",
|
|
buckets=[0.001, 0.002, 0.005, 0.01, 0.025, 0.05, 0.1, 0.2, 0.5, 1, 2, 5],
|
|
)
|
|
pending_calls_metric = Histogram(
|
|
"python_twisted_reactor_pending_calls",
|
|
"Pending calls",
|
|
buckets=[1, 2, 5, 10, 25, 50, 100, 250, 500, 1000],
|
|
)
|
|
|
|
#
|
|
# Federation Metrics
|
|
#
|
|
|
|
sent_edus_counter = Counter("synapse_federation_client_sent_edus", "")
|
|
|
|
sent_transactions_counter = Counter("synapse_federation_client_sent_transactions", "")
|
|
|
|
events_processed_counter = Counter("synapse_federation_client_events_processed", "")
|
|
|
|
# Used to track where various components have processed in the event stream,
|
|
# e.g. federation sending, appservice sending, etc.
|
|
event_processing_positions = Gauge("synapse_event_processing_positions", "", ["name"])
|
|
|
|
# Used to track the current max events stream position
|
|
event_persisted_position = Gauge("synapse_event_persisted_position", "")
|
|
|
|
# Used to track the received_ts of the last event processed by various
|
|
# components
|
|
event_processing_last_ts = Gauge("synapse_event_processing_last_ts", "", ["name"])
|
|
|
|
# Used to track the lag processing events. This is the time difference
|
|
# between the last processed event's received_ts and the time it was
|
|
# finished being processed.
|
|
event_processing_lag = Gauge("synapse_event_processing_lag", "", ["name"])
|
|
|
|
last_ticked = time.time()
|
|
|
|
|
|
class ReactorLastSeenMetric(object):
|
|
|
|
def collect(self):
|
|
cm = GaugeMetricFamily(
|
|
"python_twisted_reactor_last_seen",
|
|
"Seconds since the Twisted reactor was last seen",
|
|
)
|
|
cm.add_metric([], time.time() - last_ticked)
|
|
yield cm
|
|
|
|
|
|
REGISTRY.register(ReactorLastSeenMetric())
|
|
|
|
|
|
def runUntilCurrentTimer(func):
|
|
|
|
@functools.wraps(func)
|
|
def f(*args, **kwargs):
|
|
now = reactor.seconds()
|
|
num_pending = 0
|
|
|
|
# _newTimedCalls is one long list of *all* pending calls. Below loop
|
|
# is based off of impl of reactor.runUntilCurrent
|
|
for delayed_call in reactor._newTimedCalls:
|
|
if delayed_call.time > now:
|
|
break
|
|
|
|
if delayed_call.delayed_time > 0:
|
|
continue
|
|
|
|
num_pending += 1
|
|
|
|
num_pending += len(reactor.threadCallQueue)
|
|
start = time.time()
|
|
ret = func(*args, **kwargs)
|
|
end = time.time()
|
|
|
|
# record the amount of wallclock time spent running pending calls.
|
|
# This is a proxy for the actual amount of time between reactor polls,
|
|
# since about 25% of time is actually spent running things triggered by
|
|
# I/O events, but that is harder to capture without rewriting half the
|
|
# reactor.
|
|
tick_time.observe(end - start)
|
|
pending_calls_metric.observe(num_pending)
|
|
|
|
# Update the time we last ticked, for the metric to test whether
|
|
# Synapse's reactor has frozen
|
|
global last_ticked
|
|
last_ticked = end
|
|
|
|
if running_on_pypy:
|
|
return ret
|
|
|
|
# Check if we need to do a manual GC (since its been disabled), and do
|
|
# one if necessary.
|
|
threshold = gc.get_threshold()
|
|
counts = gc.get_count()
|
|
for i in (2, 1, 0):
|
|
if threshold[i] < counts[i]:
|
|
logger.info("Collecting gc %d", i)
|
|
|
|
start = time.time()
|
|
unreachable = gc.collect(i)
|
|
end = time.time()
|
|
|
|
gc_time.labels(i).observe(end - start)
|
|
gc_unreachable.labels(i).set(unreachable)
|
|
|
|
return ret
|
|
|
|
return f
|
|
|
|
|
|
try:
|
|
# Ensure the reactor has all the attributes we expect
|
|
reactor.runUntilCurrent
|
|
reactor._newTimedCalls
|
|
reactor.threadCallQueue
|
|
|
|
# runUntilCurrent is called when we have pending calls. It is called once
|
|
# per iteratation after fd polling.
|
|
reactor.runUntilCurrent = runUntilCurrentTimer(reactor.runUntilCurrent)
|
|
|
|
# We manually run the GC each reactor tick so that we can get some metrics
|
|
# about time spent doing GC,
|
|
if not running_on_pypy:
|
|
gc.disable()
|
|
except AttributeError:
|
|
pass
|