/usr/share/pyshared/archipelagenthypervisorhealth/archipelStatsCollector.py is in archipel-agent-hypervisor-health 0.6.0-1.
This file is owned by root:root, with mode 0o644.
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#
# archipelStatsCollector.py
#
# Copyright (C) 2010 Antoine Mercadal <antoine.mercadal@inframonde.eu>
# Copyright, 2011 - Franck Villaume <franck.villaume@trivialdev.com>
# This file is part of ArchipelProject
# http://archipelproject.org
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import datetime
import sqlite3
import subprocess
import time
import json
from threading import Thread
from archipelcore.utils import log
class TNThreadedHealthCollector (Thread):
"""
This class collects hypervisor stats regularly.
"""
def __init__(self, database_file, collection_interval, max_rows_before_purge, max_cached_rows):
"""
The contructor of the class.
@type database_file: string
@param database_file: the path of the database
@type collection_interval: integer
@param collection_interval: the intervale between two collection
@type max_rows_before_purge: integer
@param max_rows_before_purge: max number of rows that can be stored in database
@type max_cached_rows: integer
@param max_cached_rows: max number of rows that are cached into memory
"""
self.database_file = database_file
self.collection_interval = collection_interval
self.max_rows_before_purge = max_rows_before_purge
self.max_cached_rows = max_cached_rows
self.stats_CPU = []
self.stats_memory = []
self.stats_load = []
self.stats_network = []
self.current_record = {}
self.memoryPageSize = int(subprocess.Popen(["getconf", "PAGESIZE"], stdout=subprocess.PIPE).communicate()[0])
uname = subprocess.Popen(["uname", "-rsmo"], stdout=subprocess.PIPE).communicate()[0].split()
self.uname_stats = {"krelease": uname[0], "kname": uname[1], "machine": uname[2], "os": uname[3]}
self.database_query_connection = sqlite3.connect(self.database_file)
self.cursor = self.database_query_connection.cursor()
self.cursor.execute("create table if not exists cpu (collection_date date, idle int)")
self.cursor.execute("create table if not exists memory (collection_date date, free integer, used integer, total integer, swapped integer, shared integer)")
self.cursor.execute("create table if not exists load (collection_date date, one float, five float, fifteen float)")
self.cursor.execute("create table if not exists network (collection_date date, records text)")
self.database_query_connection.commit()
log.info("Database ready.")
self.recover_stored_stats()
self.cursor.close()
Thread.__init__(self)
def recover_stored_stats(self):
"""
Recover info from database.
"""
log.info("Recovering stored statistics. It may take a while...")
self.cursor.execute("select * from cpu order by collection_date desc limit %d" % self.max_cached_rows)
for values in self.cursor:
date, idle = values
self.stats_CPU.append({"date": date, "id": idle})
self.stats_CPU.reverse()
self.cursor.execute("select * from memory order by collection_date desc limit %d" % self.max_cached_rows)
for values in self.cursor:
date, free, used, total, swapped, shared = values
self.stats_memory.append({"date": date, "free": free, "used": used, "total": total, "swapped": swapped, "shared": shared})
self.stats_memory.reverse()
self.cursor.execute("select * from load order by collection_date desc limit %d" % self.max_cached_rows)
for values in self.cursor:
date, one, five, fifteen = values
self.stats_load.append({"date": date, "one": one, "five": five, "fifteen": fifteen})
self.stats_load.reverse()
self.cursor.execute("select * from network order by collection_date desc limit %d" % self.max_cached_rows)
for values in self.cursor:
date, records = values
self.stats_network.append({"date": date, "records": records})
self.stats_network.reverse()
log.info("Statistics recovered.")
def get_collected_stats(self, limit=1):
"""
This method returns the current L{TNArchipelVirtualMachine} instance.
@type limit: integer
@param limit: the max number of row to get
@rtype: TNArchipelVirtualMachine
@return: the L{TNArchipelVirtualMachine} instance
"""
log.debug("STATCOLLECTOR: Retrieving last "+ str(limit) + " recorded stats data for sending.")
try:
uptime = self.get_uptime()
uptime_stats = {"up": "%dd %dh" % (uptime[0], uptime[1])} #TODO: it's obvious it would be better to not do this
except Exception as ex:
raise Exception("Unable to get uptime.", ex)
try:
acpu = self.stats_CPU[-limit:]
except Exception as ex:
raise Exception("Unable to get CPU stats.", ex)
try:
amem = self.stats_memory[-limit:]
except Exception as ex:
raise Exception("Unable to get memory.", ex)
try:
anetwork = self.stats_network[-limit:]
except Exception as ex:
raise Exception("Unable to get networks.", ex)
try:
adisk = sorted(self.get_disk_stats(), cmp=lambda x, y: cmp(x["mount"], y["mount"]))
totalDisk = self.get_disk_total()
except Exception as ex:
raise Exception("Unable to get disks information.", ex)
try:
aload = self.stats_load[-limit:]
except Exception as ex:
raise Exception("Unable to get disks information.", ex)
if limit > 1:
acpu.reverse()
amem.reverse()
aload.reverse()
anetwork.reverse()
return {"cpu": acpu, "memory": amem, "disk": adisk, "totaldisk": totalDisk,
"load": aload, "uptime": uptime_stats, "uname": self.uname_stats, "network": anetwork}
def get_uptime(self):
"""
Get the uptime from /proc/uptime.
code taken from http://thesmithfam.org/blog/2005/11/19/python-uptime-script/
@rtype: tupple
@return: days, hours, minutes, seconds
"""
f = open('/proc/uptime')
contents = f.read().split()
f.close()
total_seconds = float(contents[0])
MINUTE = 60
HOUR = MINUTE * 60
DAY = HOUR * 24
days = int(total_seconds / DAY)
hours = int((total_seconds % DAY) / HOUR)
minutes = int((total_seconds % HOUR) / MINUTE)
seconds = int(total_seconds % MINUTE)
return (days, hours, minutes, seconds)
def get_memory_stats(self):
"""
Get memory stats.
@rtype: dict
@return: dictionnary containing the informations
"""
file_meminfo = open('/proc/meminfo')
meminfo = file_meminfo.read()
file_meminfo.close()
file_pages_sharing = open("/sys/kernel/mm/ksm/pages_sharing")
pagessharing = file_pages_sharing.read()
file_pages_sharing.close()
memshared = int(pagessharing) * self.memoryPageSize / 1024;
meminfolines = meminfo.split("\n")
memTotal = int(meminfolines[0].split()[1])
memFree = int(meminfolines[1].split()[1]) + int(meminfolines[2].split()[1]) + int(meminfolines[3].split()[1])
swapped = int(meminfolines[4].split()[1])
memUsed = memTotal - memFree
return {"date": datetime.datetime.now(), "free": memFree, "used": memUsed, "total": memTotal, "swapped": swapped, "shared": memshared}
def get_cpu_stats(self):
"""
Get CPU stats.
@rtype: dict
@return: dictionnary containing the informations
"""
dt = self.deltaTime(1)
cpuPct = (dt[len(dt) - 1] * 100.00 / sum(dt))
return {"date": datetime.datetime.now(), "id": cpuPct}
def get_load_stats(self):
"""
Get load stats.
@rtype: dict
@return: dictionnary containing the informations
"""
f = open('/proc/loadavg')
contents = f.read().split()
f.close()
load1min = float(contents[0])
load5min = float(contents[1])
load15min = float(contents[2])
return {"date": datetime.datetime.now(), "one": load1min, "five": load5min, "fifteen": load15min}
def get_disk_stats(self):
"""
Get drive usage stats.
@rtype: dict
@return: dictionnary containing the informations
"""
output = subprocess.Popen(["df", "-P", "-x", "devfs", "-x", "devtmpfs", "-x", "tmpfs"], stdout=subprocess.PIPE).communicate()[0]
listed = []
ret = []
out = output.split("\n")[1:-1]
for l in out:
cell = l.split()
if cell[5] in listed:
continue
ret.append({"partition": cell[0], "blocks": cell[1], "used": int(cell[2]) * 1024, "available": int(cell[3]) * 1024, "capacity": cell[4], "mount": cell[5]})
listed.append(cell[5])
return ret
def get_disk_total(self):
"""
Get total size of drive used stats.
@rtype: dict
@return: dictionnary containing the informations
"""
out = subprocess.Popen(["df", "--total", "-P", "-x", "devfs", "-x", "devtmpfs", "-x", "tmpfs"], stdout=subprocess.PIPE).communicate()[0].split("\n")
for line in out:
line = line.split()
if line[0] == "total":
disk_total = line
break
return {"used": disk_total[2], "available": disk_total[3], "capacity": disk_total[4]}
def get_network_stats(self):
"""
Get network stats.
@rtype: dict
@return: dictionnary containing the informations
"""
f = open('/proc/net/dev')
contents = f.read().split('\n')[2:-1]
f.close()
records = {}
ret = {}
for line in contents:
dev = line.split(":")[0].replace(" ", "")
if dev == "lo":
continue
if dev.startswith("vnet"):
continue
info = line.split(":")[1].split()
rx = int(info[0])
tx = int(info[8])
records[dev] = {"rx": rx, "tx": tx}
if self.current_record and dev in self.current_record:
delta_usage = (rx - self.current_record[dev]["rx"]) + (tx - self.current_record[dev]["tx"])
else:
delta_usage = 0;
ret[dev] = delta_usage
self.current_record = records;
return {"date": datetime.datetime.now(), "records": json.dumps(ret)}
def getTimeList(self):
"""
ignore
"""
statFile = file('/proc/stat')
timeList = statFile.readline().split(" ")[2:6]
statFile.close()
for i in range(len(timeList)):
timeList[i] = int(timeList[i])
return timeList
def deltaTime(self, interval):
"""
ignore
"""
x = self.getTimeList()
time.sleep(interval)
y = self.getTimeList()
for i in range(len(x)):
y[i] -= x[i]
return y
def run(self):
"""
Overrides super class method. do the L{TNArchipelVirtualMachine} main loop.
"""
self.database_thread_connection = sqlite3.connect(self.database_file)
self.database_thread_cursor = self.database_thread_connection.cursor()
while(1):
try:
self.stats_CPU.append(self.get_cpu_stats())
self.stats_memory.append(self.get_memory_stats())
self.stats_load.append(self.get_load_stats())
self.stats_network.append(self.get_network_stats())
if len(self.stats_CPU) >= self.max_cached_rows:
middle = (self.max_cached_rows - 1) / 2
self.database_thread_cursor.executemany("insert into memory values(:date, :free, :used, :total, :swapped, :shared)", self.stats_memory[0:middle])
self.database_thread_cursor.executemany("insert into cpu values(:date, :id)", self.stats_CPU[0:middle])
self.database_thread_cursor.executemany("insert into load values(:date, :one , :five, :fifteen)", self.stats_load[0:middle])
self.database_thread_cursor.executemany("insert into network values(:date, :records)", self.stats_network[0:middle])
log.info("Stats saved in database file.")
nrRow = int(self.database_thread_cursor.execute("select count(*) from cpu").fetchone()[0]);
if nrRow > self.max_rows_before_purge * 1.5:
self.database_thread_cursor.execute("DELETE FROM cpu WHERE collection_date IN (SELECT collection_date FROM cpu ORDER BY collection_date ASC LIMIT " + str(nrRow - self.max_rows_before_purge) + ")")
self.database_thread_cursor.execute("DELETE FROM memory WHERE collection_date IN (SELECT collection_date FROM memory ORDER BY collection_date ASC LIMIT " + str(nrRow - self.max_rows_before_purge) + ")")
self.database_thread_cursor.execute("DELETE FROM load WHERE collection_date IN (SELECT collection_date FROM load ORDER BY collection_date ASC LIMIT " + str(nrRow - self.max_rows_before_purge) + ")")
self.database_thread_cursor.execute("DELETE FROM network WHERE collection_date IN (SELECT collection_date FROM network ORDER BY collection_date ASC LIMIT " + str(nrRow - self.max_rows_before_purge) + ")")
log.debug("Old stored stats have been purged from database.")
del self.stats_CPU[0:middle]
del self.stats_memory[0:middle]
del self.stats_load[0:middle]
del self.stats_network[0:middle]
log.info("Cached stats have been purged from memory.")
self.database_thread_connection.commit()
time.sleep(self.collection_interval)
except Exception as ex:
log.error("Stat collection fails. Exception %s" % str(ex))
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