23e932886e
Fix "./os_performance_tools/collectors/mysql.py:54:80: E501 line too long (87 > 79 characters)" This is done with reworking the comment to inline the URL. Change-Id: Ic3b965cdc8d43fdf8621036a0819d2f7df13fb9c
86 lines
2.6 KiB
Python
86 lines
2.6 KiB
Python
# 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.
|
|
#
|
|
# This file was forked from dstat's mysql5_innodb plugin but retains none of
|
|
# that original code other than a list of well known MySQL variable names.
|
|
''' MySQL is accessed via the configuration options found at ~/.my.cnf. This is
|
|
parsed not by libmysqlclient, which may or may not be present, but by
|
|
configparser. As such, some options that are usually usable from that file may
|
|
be ignored by this module. Everything from the "client" section will be passed
|
|
through to pymysql's connect method.
|
|
'''
|
|
|
|
import logging
|
|
import os
|
|
|
|
import pymysql
|
|
from six.moves import configparser
|
|
|
|
from os_performance_tools import error
|
|
|
|
COLLECT_COUNTERS = (
|
|
'Com_delete',
|
|
'Com_insert',
|
|
'Com_select',
|
|
'Com_update',
|
|
'Connections',
|
|
'Innodb_buffer_pool_read_requests',
|
|
'Innodb_data_reads',
|
|
'Innodb_data_read',
|
|
'Innodb_data_writes',
|
|
'Innodb_data_written',
|
|
'Innodb_log_writes',
|
|
'Innodb_rows_deleted',
|
|
'Innodb_rows_inserted',
|
|
'Innodb_rows_read',
|
|
'Innodb_rows_updated',
|
|
'Queries',
|
|
'Slow_queries',
|
|
)
|
|
'''These counters' meaning are all documented in the `MySQL manual
|
|
<http://dev.mysql.com/doc/refman/5.6/en/server-status-variables.html>`_.
|
|
They are intended to show a picture of how much has been asked of
|
|
MySQL, and how busy MySQL was while executing commands. Each one will
|
|
be recorded unaltered by name in the resulting counters mapping.
|
|
'''
|
|
|
|
|
|
def _get_config():
|
|
args = {}
|
|
try:
|
|
with open(os.path.expanduser("~/.my.cnf")) as dfile:
|
|
parser = configparser.ConfigParser()
|
|
parser.readfp(dfile)
|
|
for k, v in parser.items('client'):
|
|
args[k] = v
|
|
except IOError as e:
|
|
raise error.CollectionError(str(e))
|
|
return args
|
|
|
|
|
|
def collect():
|
|
log = logging.getLogger()
|
|
args = _get_config()
|
|
conn = pymysql.connect(**args)
|
|
cursor = conn.cursor()
|
|
counters = {}
|
|
cursor.execute('show global status')
|
|
while True:
|
|
result = cursor.fetchone()
|
|
if result is None:
|
|
break
|
|
k, v = result
|
|
if k in COLLECT_COUNTERS:
|
|
counters[k] = int(v)
|
|
log.debug(counters)
|
|
return counters
|