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# Copyright 2014 Huawei Technologies Co. 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.
"""Compass Health Check heavy-lifting utilities"""
import commands
import os
import platform
import re
def validate_setting(module, setting, param):
"""Checks if a Compass setting exists in the config file.
:param module : module name to be checked
:type module : string
:param setting : compass setting wrapper
:type setting : python module
:param param : settings defined in compass config file
:type param : string
"""
if hasattr(setting, param):
return True
else:
err_msg = "[%s]Error: no %s defined" % (module, param)
return err_msg
def get_dist():
"""Returns the operating system related information."""
os_version, version, release = platform.linux_distribution()
return (os_version.lower().strip(), version, release.lower().strip())
def check_path(module_name, path):
"""Checks if a directory or file exisits.
:param module_name : module name to be checked
:type module_name : string
:param path : path of the directory of file
:type path : string
"""
err_msg = ""
if not os.path.exists(path):
err_msg = (
"[%s]Error: %s does not exist, "
"please check your configurations.") % (module_name, path)
return err_msg
def check_service_running(module_name, service_name):
"""Checks if a certain service is running.
:param module_name : module name to be checked
:type module_name : string
:param service_name : service name to be checked
:type service_name : string
"""
err_msg = ""
if service_name not in commands.getoutput('ps -ef'):
err_msg = "[%s]Error: %s is not running." % (
module_name, service_name)
return err_msg
def check_chkconfig(service_name):
"""Checks if a service is enabled at the start up.
:param service_name : service name to be checked
:type service_name : string
"""
chk_on = False
for service in os.listdir('/etc/rc3.d/'):
if service_name in service and 'S' in service:
chk_on = True
break
return chk_on
def strip_name(name):
"""Reformats names."""
if not any([s in name for s in "(,),-,_".split(',')]):
return name
paren_regex = re.compile("(.*?)\s*\(")
dash_regex = re.compile("(.*?)\s*\-")
under_dash_regex = re.compile("(.*?)\s*\_")
r1 = paren_regex.match(name)
r2 = dash_regex.match(name)
r3 = under_dash_regex.match(name)
shortest = 'AVeryLongStringForDefualt'
for r in [r1, r2, r3]:
if r and len(r.group(1)) < len(shortest):
shortest = r.group(1)
return shortest
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