#!/usr/bin/env python
# -*- encoding: utf-8 -*-
from __future__ import print_function
import argparse
import json
import os
import sys
import time
BUF_SIZE = 8192
class Reader(object):
def __init__(self, file):
self.f_size = os.stat(file).st_size
self.f_pos = self.f_size
self.file = file
self.buf_list = []
self.remain = None
self.f = None
def open(self):
if self.f is None:
self.f = open(self.file)
def close(self):
if self.f is not None:
self.f.close()
self.f = None
def __enter__(self):
self.open()
return self
def __exit__(self, exc_type, exc_val, exc_tb):
self.close()
def _read(self):
if self.f_pos == 0:
return None
size = BUF_SIZE
if self.f_pos - BUF_SIZE >= 0:
self.f.seek(self.f_pos - BUF_SIZE)
else:
self.f.seek(0)
size = self.f_pos - 0
buf = self.f.read(size)
if self.remain is not None:
self.buf_list = (buf + self.remain).split('\n')
else:
self.buf_list = buf.split('\n')
if size == BUF_SIZE:
self.remain = self.buf_list[0]
self.buf_list = self.buf_list[1:]
else:
self.remain = None
self.f_pos -= size
return self.buf_list
def get_next(self):
ret = self._get_next()
if ret is not None:
return ret
while self._read() is not None:
ret = self._get_next()
if ret is not None:
return ret
return None
class CommandReader(Reader):
def __init__(self, file):
super(CommandReader, self).__init__(file)
self.cmd = {}
def _get_next(self):
""" Extract data from the commands log file of xcat
Format::
[Date] 2017-09-04 17:52:10
[ClientType] cli
[Request] xdsh c910f04x35v07 'echo "nameserver 9.0.2.1" >> /etc/resolv.conf'
[Response]
[ElapsedTime] 0 s
:return: command dict if found, None if not found
"""
for i, b in enumerate(self.buf_list[::-1]):
if b.find('[ElapsedTime]') == 0:
self.cmd['elapsed'] = float(b.split(' ')[1])
elif b.find('[Request]') == 0:
self.cmd['request'] = " ".join(
b.rstrip().split(' ')[1:]).strip().replace(',', ' ')
elif b.find('[Date]') == 0:
temp = b.split(' ')
self.cmd['date'] = '%s %s' % (temp[-2], temp[-1])
if all(k in self.cmd for k in ('date', 'request', 'elapsed')):
cmd = self.cmd
self.cmd = {}
self.buf_list = self.buf_list[0:len(self.buf_list) - i - 1]
return cmd
return None
class DBTraceReader(Reader):
def __init__(self, file):
super(DBTraceReader, self).__init__(file)
self.year = str(time.localtime().tm_year)
def _get_next(self):
"""Extract information from syslog file of xcat
Format::
Sep 4 22:16:38 c910f04x12v02 xcat[6692]: [DB Trace]: {"msg":{"table":"nodegroup","method":"xCAT::Table::getAllEntries"},"type":"end_sql","elapsed":"0.00042s"}
:return: A dict contains the time stamp and db dict if db trace log is
found. None if nothing about db trace log found.
"""
for i, b in enumerate(self.buf_list[::-1]):
pos = b.find('[DB Trace]:')
if pos == -1:
continue
date = b[0:15]
conv = time.strptime('%s %s' % (self.year, date),
"%Y %b %d %H:%M:%S")
# TODO: the year value is not included in the current syslog
try:
ret = {'stamp': int(time.mktime(conv)),
'db': json.loads(b[pos + 12:])}
except ValueError:
if b.find('message repeated') != -1:
# syslog will add [ ] around the json message.
ret = {'stamp': int(time.mktime(conv)),
'db': json.loads(b[pos + 12:-1])}
else:
raise
self.buf_list = self.buf_list[0:len(self.buf_list) - i - 1]
return ret
return None
class TimeStamp(object):
def __init__(self, kwargs):
if 'date' in kwargs:
a = time.strptime(kwargs['date'], "%Y-%m-%d %H:%M:%S")
self.start = int(time.mktime(a))
else:
raise
if 'elapsed' in kwargs:
self.end = self.start + int(kwargs['elapsed']) + 1
else:
raise
class Analysis(object):
def __init__(self, command_log_file, cluster_log_file):
self.command_log_file = command_log_file
self.cluster_log_file = cluster_log_file
def _stat(self, record, data):
elapsed = 0
if 'elapsed' in data:
# elapsed = float('%.3f' % float(data['elapsed'][:-1]))
elapsed = float(data['elapsed'][:-1])
if data['type'] == 'end_sql':
if data['msg']['method'].startswith('xCAT::Table::get'):
record['get_sql_time'] += elapsed
elif data['msg']['method'].startswith('xCAT::Table::set'):
record['set_sql_time'] += elapsed
elif data['msg']['method'].startswith('xCAT::Table::del'):
record['del_sql_time'] += elapsed
elif data['type'] == 'end':
if data['msg']['method'].startswith('xCAT::Table::get'):
record['get_sub_time'] += elapsed
elif data['msg']['method'].startswith('xCAT::Table::set'):
record['set_sub_time'] += elapsed
elif data['msg']['method'].startswith('xCAT::Table::del'):
record['del_sub_time'] += elapsed
elif data['type'] == 'start_sql':
if data['msg']['method'].startswith('xCAT::Table::get'):
if data['msg']['table'] not in record['get_tables']:
record['get_tables'][data['msg']['table']] = 1
else:
record['get_tables'][data['msg']['table']] += 1
elif data['msg']['method'].startswith('xCAT::Table::set'):
if data['msg']['table'] not in record['set_tables']:
record['set_tables'][data['msg']['table']] = 1
else:
record['set_tables'][data['msg']['table']] += 1
elif data['msg']['method'].startswith('xCAT::Table::del'):
if data['msg']['table'] not in record['del_tables']:
record['del_tables'][data['msg']['table']] = 1
else:
record['del_tables'][data['msg']['table']] += 1
elif data['type'] == 'build_cache':
if data['msg']['table'] not in record['build_cache']:
record['build_cache'][data['msg']['table']] = 1
else:
record['build_cache'][data['msg']['table']] += 1
elif data['type'] == 'cache_hit':
if data['msg']['table'] not in record['cache_hit']:
record['cache_hit'][data['msg']['table']] = 1
else:
record['cache_hit'][data['msg']['table']] += 1
def process(self, latest, specific_cmd):
if specific_cmd is not None:
latest = None
self._print_header()
with CommandReader(self.command_log_file) as cmd_reader:
cmd = cmd_reader.get_next()
trace = None
index = 0
db_reader = DBTraceReader(self.cluster_log_file)
db_reader.open()
while cmd is not None:
if specific_cmd is not None and not cmd['request'].startswith(
specific_cmd):
cmd = cmd_reader.get_next()
continue
stamp = TimeStamp(cmd)
if trace is None:
trace = db_reader.get_next()
while trace and trace['stamp'] > stamp.end:
trace = db_reader.get_next()
key = '%s(%s)' % (cmd['request'], cmd['date'])
record = {'command': key,
'elapsed': cmd['elapsed'],
'get_sql_time': float(0),
'set_sql_time': float(0),
'del_sql_time': float(0),
'set_sub_time': float(0),
'get_sub_time': float(0),
'del_sub_time': float(0),
'get_tables': {},
'set_tables': {},
'del_tables': {},
'build_cache': {},
'cache_hit': {}}
while trace and trace['stamp'] >= stamp.start:
self._stat(record, trace['db'])
trace = db_reader.get_next()
self._print_csv(record)
index += 1
if latest is not None and index == latest:
break
cmd = cmd_reader.get_next()
db_reader.close()
def _print_header(self):
print("command,elapsed(precision: 1s),"
"get_sub_time(s),set_sub_time(s),del_sub_time(s),"
"get_sql_time(s),set_sql_time(s),del_sql_time(s),"
"build_cache(times),cache_hit(times),"
"get_tables(times),set_tables(times),del_tables(times)")
def _print_csv(self, record):
print("%(command)s,%(elapsed)f,"
"%(get_sub_time)f,%(set_sub_time)f,%(del_sub_time)f,"
"%(get_sql_time)f,%(set_sql_time)f,%(del_sql_time)f,"
"%(build_cache)s,%(cache_hit)s,"
"%(get_tables)s,%(set_tables)s,%(del_tables)s\n" %
{'command': record['command'],
'elapsed': record['elapsed'],
'get_sub_time': float('%.3f' % record['get_sub_time']),
'set_sub_time': float('%.3f' % record['set_sub_time']),
'del_sub_time': float('%.3f' % record['del_sub_time']),
'get_sql_time': float('%.3f' % record['get_sql_time']),
'set_sql_time': float('%.3f' % record['set_sql_time']),
'del_sql_time': float('%.3f' % record['del_sql_time']),
'build_cache': self._format_dict(record['build_cache']),
'cache_hit': self._format_dict(record['cache_hit']),
'get_tables': self._format_dict(record['get_tables']),
'set_tables': self._format_dict(record['set_tables']),
'del_tables': self._format_dict(record['del_tables'])})
def _format_list(self, a):
return " ".join(a)
def _format_dict(self, d):
ret = []
for k, v in d.items():
if type(v) is list:
ret.append('%s:[%s]', k, " ".join(v))
elif type(v) is str or type(v) is int:
ret.append('%s:%s' % (k, str(v)))
return " ".join(ret)
class StatsShell(object):
def get_base_parser(self):
parser = argparse.ArgumentParser(
prog='dbstats',
add_help=False,
formatter_class=HelpFormatter,
)
parser.add_argument('-h', '--help',
action='store_true',
help=argparse.SUPPRESS,
)
parser.add_argument('--clusterlog',
help="The syslog file of xcat.",
default='/var/log/xcat/cluster.log',
type=str)
parser.add_argument('--commandlog',
help="The command log file of xcat.",
default='/var/log/xcat/commands.log',
type=str)
parser.add_argument('-n', '--num',
help="The recent count of commands to analyze",
type=int,
default=10)
parser.add_argument('-c', '--command',
help="The specified command to track",
type=str,
default=None)
return parser
def do_help(self, args):
self.parser.print_help()
def main(self, argv):
self.parser = self.get_base_parser()
(options, args) = self.parser.parse_known_args(argv)
if options.help:
self.do_help(options)
return 0
a = Analysis(options.commandlog, options.clusterlog)
a.process(options.num, options.command)
class HelpFormatter(argparse.HelpFormatter):
def start_section(self, heading):
# Title-case the headings
heading = '%s%s' % (heading[0].upper(), heading[1:])
super(HelpFormatter, self).start_section(heading)
if __name__ == "__main__":
StatsShell().main(sys.argv[1:])