mirror of
https://git.anonymousland.org/anonymousland/synapse-product.git
synced 2024-12-18 17:24:19 -05:00
123 lines
3.7 KiB
Python
123 lines
3.7 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 os
|
|
|
|
|
|
TICKS_PER_SEC = 100
|
|
BYTES_PER_PAGE = 4096
|
|
|
|
HAVE_PROC_STAT = os.path.exists("/proc/stat")
|
|
HAVE_PROC_SELF_STAT = os.path.exists("/proc/self/stat")
|
|
HAVE_PROC_SELF_LIMITS = os.path.exists("/proc/self/limits")
|
|
HAVE_PROC_SELF_FD = os.path.exists("/proc/self/fd")
|
|
|
|
# Field indexes from /proc/self/stat, taken from the proc(5) manpage
|
|
STAT_FIELDS = {
|
|
"utime": 14,
|
|
"stime": 15,
|
|
"starttime": 22,
|
|
"vsize": 23,
|
|
"rss": 24,
|
|
}
|
|
|
|
|
|
stats = {}
|
|
|
|
# In order to report process_start_time_seconds we need to know the
|
|
# machine's boot time, because the value in /proc/self/stat is relative to
|
|
# this
|
|
boot_time = None
|
|
if HAVE_PROC_STAT:
|
|
with open("/proc/stat") as _procstat:
|
|
for line in _procstat:
|
|
if line.startswith("btime "):
|
|
boot_time = int(line.split()[1])
|
|
|
|
|
|
def update_resource_metrics():
|
|
if HAVE_PROC_SELF_STAT:
|
|
global stats
|
|
with open("/proc/self/stat") as s:
|
|
line = s.read()
|
|
# line is PID (command) more stats go here ...
|
|
raw_stats = line.split(") ", 1)[1].split(" ")
|
|
|
|
for (name, index) in STAT_FIELDS.iteritems():
|
|
# subtract 3 from the index, because proc(5) is 1-based, and
|
|
# we've lost the first two fields in PID and COMMAND above
|
|
stats[name] = int(raw_stats[index - 3])
|
|
|
|
|
|
def _count_fds():
|
|
# Not every OS will have a /proc/self/fd directory
|
|
if not HAVE_PROC_SELF_FD:
|
|
return 0
|
|
|
|
return len(os.listdir("/proc/self/fd"))
|
|
|
|
|
|
def register_process_collector(process_metrics):
|
|
process_metrics.register_collector(update_resource_metrics)
|
|
|
|
if HAVE_PROC_SELF_STAT:
|
|
process_metrics.register_callback(
|
|
"cpu_user_seconds_total",
|
|
lambda: float(stats["utime"]) / TICKS_PER_SEC
|
|
)
|
|
process_metrics.register_callback(
|
|
"cpu_system_seconds_total",
|
|
lambda: float(stats["stime"]) / TICKS_PER_SEC
|
|
)
|
|
process_metrics.register_callback(
|
|
"cpu_seconds_total",
|
|
lambda: (float(stats["utime"] + stats["stime"])) / TICKS_PER_SEC
|
|
)
|
|
|
|
process_metrics.register_callback(
|
|
"virtual_memory_bytes",
|
|
lambda: int(stats["vsize"])
|
|
)
|
|
process_metrics.register_callback(
|
|
"resident_memory_bytes",
|
|
lambda: int(stats["rss"]) * BYTES_PER_PAGE
|
|
)
|
|
|
|
process_metrics.register_callback(
|
|
"start_time_seconds",
|
|
lambda: boot_time + int(stats["starttime"]) / TICKS_PER_SEC
|
|
)
|
|
|
|
if HAVE_PROC_SELF_FD:
|
|
process_metrics.register_callback(
|
|
"open_fds",
|
|
lambda: _count_fds()
|
|
)
|
|
|
|
if HAVE_PROC_SELF_LIMITS:
|
|
def _get_max_fds():
|
|
with open("/proc/self/limits") as limits:
|
|
for line in limits:
|
|
if not line.startswith("Max open files "):
|
|
continue
|
|
# Line is Max open files $SOFT $HARD
|
|
return int(line.split()[3])
|
|
return None
|
|
|
|
process_metrics.register_callback(
|
|
"max_fds",
|
|
lambda: _get_max_fds()
|
|
)
|