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# -*- coding: utf-8 -*-
# Copyright © Cloud Linux GmbH & Cloud Linux Software, Inc 2010-2019 All Rights Reserved
#
# Licensed under CLOUD LINUX LICENSE AGREEMENT
# http://cloudlinux.com/docs/LICENSE.TXT
from __future__ import absolute_import
import re
import os
from clcommon.utils import run_command, ExternalProgramFailed
class MysqlInfo(object):
def __init__(self):
self.mysqld_v = self.retrieve_server_info()
@staticmethod
def get_binary():
"""
Find mysql server binary
:return: path to mysql binary
"""
try:
os.stat('/usr/sbin/mysqld')
return '/usr/sbin/mysqld'
except OSError:
return '/usr/libexec/mysqld'
def retrieve_server_info(self):
"""
Get server information through `<mysql_server_binary> -V` command
:return: full command output
"""
try:
return run_command([self.get_binary(), '-V'])
except ExternalProgramFailed:
# may be no such file or unknown error happen
return None
def get(self):
"""
Return gathered data
:return: dict(
'vendor': MySQL|MariaDB|Percona,
'version': server version in the form of {major}.{minor} or {major}.{minor}-{release} for percona,
'cll-lve': patches from CL applied or not (True|False)
)
"""
return {
'vendor': self.get_vendor(),
'version': self.get_version(),
'cll-lve': self.is_patched()
}
def get_vendor(self):
"""
Extract MySQL vendor from server info
:return: MySQL|MariaDB|Percona or
`unknown` if failed to apply regex or
None if there is no server info (this usually means that there are no MySQL installed)
"""
if self.mysqld_v is None:
return None
# regex to find vendor -- something, starting from round bracket and followed by `Server`
# (see test_clconfig_db_info_lib.py for detailed examples)
p = re.compile(r'(?<=\().+(?=\sServer)')
try:
# we need only first word of first element
return p.findall(self.mysqld_v)[0].split()[0]
except IndexError:
return 'unknown'
def get_version(self):
"""
Retrieve MySQL server version from server info
:return: X.X.X e.g. 10.2.16|5.6.39, includes release for percona (X.X.X-X.X e.g. 5.6.40-84.0) or
`unknown` if failed to apply regex or
None if there is no server info (this usually means that there are no MySQL installed)
"""
if self.mysqld_v is None:
return None
# regex to find version -- numbers, divided by `.` or `-` which go after `Ver`
# (see test_clconfig_db_info_lib.py for detailed examples)
p = re.compile(r'(?<=Ver\s)[0-9\.\-]+')
try:
# we need first element, also should sanitize from trailing `-`
return p.findall(self.mysqld_v)[0].rstrip('-')
except IndexError:
return 'unknown'
def is_patched(self):
"""
Retrieve information about CL patch by `cll-lve` in server info
:return: True if contains `cll-lve` seq
False otherwise or
None if there is no server info (this usually means that there are no MySQL installed)
"""
if self.mysqld_v is None:
return None
return 'cll-lve' in self.mysqld_v
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