| # 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.decode('utf-8').strip('\n') |
| |
| def getLines(self): |
| return self.stdout.decode('utf-8').strip('\n') |
| |
| def getStderr(self): |
| return self.stderr.decode('utf-8').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 = open("/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("Red Hat Enterprise Linux Server release 8") != -1 or version.find("Scientific Linux release 8") != -1 or version.find("CentOS Linux release 8") != -1 or version.find("CentOS release 8.") != -1: |
| self.distro = "RHEL8" |
| elif version.find("CentOS") != -1: |
| self.distro = "CentOS" |
| else: |
| self.distro = "RHEL5" |
| elif os.path.exists("/etc/legal") and "Ubuntu" in open("/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 serviceOpsRedhat7Later(serviceOps): |
| def isServiceRunning(self, servicename): |
| try: |
| o = bash("systemctl is-active " + servicename) |
| textout = o.getStdout() |
| return "inactive" not in textout and "failed" not in textout |
| 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 |
