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#!/usr/bin/python3
#coding: UTF-8
import optparse
import sys
import re
import subprocess
class ExecutionPlan:
def __init__(self, commands):
self.commands = commands
self.executed = []
self.logFile = open("/tmp/log","w")
self.todo = len(self.commands)
def execute_all(self):
for i in range(len(self.executed),self.todo):
print("[" + str(i+1) + "/" + str(self.todo) + "]: excuting ",end="")
self.execute_next()
print("\r[" + str(i+1) + "/" + str(self.todo) + "]: excuted ")
def execute_next(self):
cmd = self.commands.pop(0)
# safty anker subprocess.call(cmd)
subprocess.call(['echo','>>>'] + cmd,stdout=self.logFile)
subprocess.call(['echo'] + cmd,stdout=self.logFile,stderr=self.logFile)
self.executed.append(cmd)
def logInfo(msg):
print("\033[1;32mINFO\033[0m " + str(msg))
def logErr(msg):
print("\033[1;31mERROR\033[0m " + str(msg))
def parseVmName(rawString):
# valdiate vm-name
if not re.match('^vm-[a-z]+[0-9]?(-[a-z])?$',rawString):
logErr('the name ' + rawString + ' is no valid vm-name');
sys.exit(2)
return rawString
def parseDiskSize(rawString):
# valdiate disk size
diskSizeUnit = 'G'
diskSize = 0
match = re.match('^([0-9]+)([GgMm])?$',rawString)
if not match:
logErr('the name ' + raw + ' is no a valid disk size <number>(G|M)?');
sys.exit(2)
try:
diskSizeUnit = match.group(2)
diskSize = int(match.group(1))
except ValueError:
logErr('the size ' + options.size + ' is not a valid disk size');
sys.exit(2)
if not diskSizeUnit:
diskSizeUnit = 'G'
logInfo("interpreteing disk size in gigbyte magnitude")
if diskSizeUnit == 'm' or diskSizeUnit == 'M':
if not(1024 < diskSize and diskSize < 500000):
logErr(' Syrsly? ' + str(diskSize) + ' megabytes?')
sys.exit(2)
else:
if not(1 < diskSize and diskSize < 500):
logErr(' Syrsly? ' + str(diskSize) + ' gigabytes?')
sys.exit(2)
return (diskSize, diskSizeUnit)
# -----------------------------------------------------------------------------
# Functionality starts here, before only libary code
# -----------------------------------------------------------------------------
# vars
volumeGroupName = 'scsiRaid'
defaultDiskSize = '3G'
# configure known options
usage = "usage: %prog VMNAME [options]"
parser = optparse.OptionParser(usage=usage)
parser.add_option("-s", "--size", dest="size", default=defaultDiskSize,
help="SIZE of vm root disk", metavar="SIZE")
parser.add_option("-v", "--verbose", dest="verbose",
action="store_true", default=False,
help="should I do output")
(options, args) = parser.parse_args()
# check if required args are given
if len(args) < 1:
parser.print_usage()
logErr("a vm-name must be given!")
sys.exit(2)
elif len(args) > 1:
parser.print_usage()
logErr("to many arguments given!")
sys.exit(2)
vmName = parseVmName(args[0])
diskSize, diskSizeUnit = parseDiskSize(options.size)
cmds = [
["lvcreate", "-n", vmName, "-L", str(diskSize) + str(diskSizeUnit)],
["mkfs", "/dev/" + volumeGroupName + "/" + vmName, "-l",vmName],
["addIscsiDisk", vmName]
]
execPlan = ExecutionPlan(cmds)
execPlan.execute_all()
logInfo("all done. SSH to (pang|peng).spline.de an install your vm there!")
sys.exit(0)
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