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"""
#############################################################################
#Copyright 2017 Parker Berberian and others #
# #
#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. #
#############################################################################
"""
import sys
import xml.dom
import xml.dom.minidom
import yaml
class Network:
"""
This class has a similar role as the Domain class.
This class will parse a config file and
write the xml definitions of those networks for libvirt.
"""
def __init__(self, propertiesDict):
"""
init. propertiesDict should be
one of the dictionaries returned by parseConfigFile
"""
self.name = propertiesDict['name']
self.brName = propertiesDict['brName']
self.brAddr = propertiesDict['brAddr']
self.netmask = propertiesDict['netmask']
self.forward = propertiesDict['forward']
self.dhcp = propertiesDict['dhcp']
self.cidr = propertiesDict['cidr']
def toXML(self):
"""
Takes the config of this network and writes a valid xml definition
for libvirt.
returns a string
"""
definition = xml.dom.minidom.parseString("<network>\n</network>")
nameElem = definition.createElement('name')
nameElem.appendChild(definition.createTextNode(self.name))
definition.documentElement.appendChild(nameElem)
if self.forward['used']:
forwardElem = definition.createElement('forward')
forwardElem.setAttribute('mode', self.forward['type'])
definition.documentElement.appendChild(forwardElem)
bridgeElem = definition.createElement('bridge')
bridgeElem.setAttribute('name', self.brName)
bridgeElem.setAttribute('stp', 'on')
bridgeElem.setAttribute('delay', '5')
definition.documentElement.appendChild(bridgeElem)
ipElem = definition.createElement('ip')
ipElem.setAttribute('address', self.brAddr)
ipElem.setAttribute('netmask', self.netmask)
if self.dhcp['used']:
dhcpElem = definition.createElement('dhcp')
rangeElem = definition.createElement('range')
rangeElem.setAttribute('start', self.dhcp['rangeStart'])
rangeElem.setAttribute('end', self.dhcp['rangeEnd'])
dhcpElem.appendChild(rangeElem)
ipElem.appendChild(dhcpElem)
definition.documentElement.appendChild(ipElem)
self.xml = definition.toprettyxml()
return self.xml
def writeXML(self, filePath):
"""
writes xml definition to given file
"""
f = open(filePath, 'w')
f.write(self.toXML())
f.close()
@staticmethod
def parseConfigFile(path):
"""
parses given config file
"""
configFile = open(path, 'r')
try:
config = yaml.safe_load(configFile)
except Exception:
print "Bad network configuration file. exiting"
sys.exit(1)
return config
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