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Copy pathutilities.py
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executable file
·250 lines (214 loc) · 8.74 KB
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# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you 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.
from cloudException import CloudRuntimeException, formatExceptionInfo
import logging
from subprocess import PIPE, Popen
from signal import alarm, signal, SIGALRM, SIGKILL
import sys
import os
class bash:
def __init__(self, args, timeout=600):
self.args = args
logging.debug("execute:%s"%args)
self.timeout = timeout
self.process = None
self.success = False
self.run()
def run(self):
class Alarm(Exception):
pass
def alarm_handler(signum, frame):
raise Alarm
try:
self.process = Popen(self.args, shell=True, stdout=PIPE, stderr=PIPE)
if self.timeout != -1:
signal(SIGALRM, alarm_handler)
alarm(self.timeout)
try:
self.stdout, self.stderr = self.process.communicate()
if self.timeout != -1:
alarm(0)
except Alarm:
os.kill(self.process.pid, SIGKILL)
raise CloudRuntimeException("Timeout during command execution")
self.success = self.process.returncode == 0
except:
raise CloudRuntimeException(formatExceptionInfo())
if not self.success:
logging.debug("Failed to execute:" + self.getErrMsg())
def isSuccess(self):
return self.success
def getStdout(self):
return self.stdout.strip("\n")
def getLines(self):
return self.stdout.split("\n")
def getStderr(self):
return self.stderr.strip("\n")
def getErrMsg(self):
if self.isSuccess():
return ""
if self.getStderr() is None or self.getStderr() == "":
return self.getStdout()
else:
return self.getStderr()
def initLoging(logFile=None):
try:
if logFile is None:
logging.basicConfig(level=logging.DEBUG)
else:
logging.basicConfig(filename=logFile, level=logging.DEBUG)
except:
logging.basicConfig(level=logging.DEBUG)
def writeProgressBar(msg, result):
output = "[%-6s]\n"%"Failed"
if msg is not None:
output = "%-30s"%msg
elif result is True:
output = "[%-2s]\n"%"OK"
elif result is False:
output = "[%-6s]\n"%"Failed"
sys.stdout.write(output)
sys.stdout.flush()
class UnknownSystemException(Exception):
"This Excption is raised if the current operating enviornment is unknown"
pass
class Distribution:
def __init__(self):
self.distro = "Unknown"
self.release = "Unknown"
if os.path.exists("/etc/fedora-release"):
self.distro = "Fedora"
elif os.path.exists("/etc/redhat-release"):
version = file("/etc/redhat-release").readline()
if version.find("Red Hat Enterprise Linux Server release 6") != -1 or version.find("Scientific Linux release 6") != -1 or version.find("CentOS Linux release 6") != -1 or version.find("CentOS release 6.") != -1:
self.distro = "RHEL6"
elif version.find("Red Hat Enterprise Linux Server release 7") != -1 or version.find("Scientific Linux release 7") != -1 or version.find("CentOS Linux release 7") != -1 or version.find("CentOS release 7.") != -1:
self.distro = "RHEL7"
elif version.find("CentOS") != -1:
self.distro = "CentOS"
else:
self.distro = "RHEL5"
elif os.path.exists("/etc/legal") and "Ubuntu" in file("/etc/legal").read(-1):
self.distro = "Ubuntu"
kernel = bash("uname -r").getStdout()
if kernel.find("2.6.32") != -1:
self.release = "10.04"
self.arch = bash("uname -m").getStdout()
elif os.path.exists("/usr/bin/lsb_release"):
o = bash("/usr/bin/lsb_release -i")
distributor = o.getStdout().split(":\t")[1]
if "Debian" in distributor:
# This obviously needs a rewrite at some point
self.distro = "Ubuntu"
else:
raise UnknownSystemException(distributor)
else:
raise UnknownSystemException
def getVersion(self):
return self.distro
def getRelease(self):
return self.release
def getArch(self):
return self.arch
class serviceOps:
pass
class serviceOpsRedhat(serviceOps):
def isServiceRunning(self, servicename):
try:
o = bash("service " + servicename + " status")
if "running" in o.getStdout() or "start" in o.getStdout() or "Running" in o.getStdout():
return True
else:
return False
except:
return False
def stopService(self, servicename,force=False):
if self.isServiceRunning(servicename) or force:
return bash("service " + servicename +" stop").isSuccess()
return True
def disableService(self, servicename):
result = self.stopService(servicename)
bash("chkconfig --del " + servicename)
return result
def startService(self, servicename,force=False):
if not self.isServiceRunning(servicename) or force:
return bash("service " + servicename + " start").isSuccess()
return True
def enableService(self, servicename,forcestart=False):
bash("chkconfig --level 2345 " + servicename + " on")
return self.startService(servicename,force=forcestart)
def isKVMEnabled(self):
if os.path.exists("/dev/kvm"):
return True
else:
return False
class serviceOpsUbuntu(serviceOps):
def isServiceRunning(self, servicename):
try:
o = bash("sudo /usr/sbin/service " + servicename + " status")
if "not running" in o.getStdout():
return False
else:
return True
except:
return False
def stopService(self, servicename,force=True):
if self.isServiceRunning(servicename) or force:
return bash("sudo /usr/sbin/service " + servicename +" stop").isSuccess()
def disableService(self, servicename):
result = self.stopService(servicename)
bash("sudo update-rc.d -f " + servicename + " remove")
return result
def startService(self, servicename,force=True):
if not self.isServiceRunning(servicename) or force:
return bash("sudo /usr/sbin/service " + servicename + " start").isSuccess()
def enableService(self, servicename,forcestart=True):
bash("sudo update-rc.d -f " + servicename + " remove")
bash("sudo update-rc.d -f " + servicename + " defaults")
return self.startService(servicename,force=forcestart)
def isKVMEnabled(self):
return bash("kvm-ok").isSuccess()
class serviceOpsRedhat7(serviceOps):
def isServiceRunning(self, servicename):
try:
o = bash("systemctl status " + servicename)
if "running" in o.getStdout() or "start" in o.getStdout() or "Running" in o.getStdout():
return True
else:
return False
except:
return False
def stopService(self, servicename,force=False):
if self.isServiceRunning(servicename) or force:
return bash("systemctl stop " + servicename).isSuccess()
return True
def disableService(self, servicename):
result = self.stopService(servicename)
bash("systemctl disable " + servicename)
return result
def startService(self, servicename,force=False):
if not self.isServiceRunning(servicename) or force:
return bash("systemctl start " + servicename).isSuccess()
return True
def enableService(self, servicename,forcestart=False):
bash("systemctl enable " + servicename)
return self.startService(servicename,force=forcestart)
def isKVMEnabled(self):
if os.path.exists("/dev/kvm"):
return True
else:
return False