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#!/usr/bin/env python
import os
import sys
import lxml.etree
import Bcfg2.Options
def main():
parser = Bcfg2.Options.get_parser(
description="Migrate from Bcfg2 1.1-style Properties-based NagiosGen "
"configuration to standalone 1.2-style")
parser.add_options([Bcfg2.Options.Common.repository])
parser.parse()
repo = Bcfg2.Options.setup.repository
oldconfigfile = os.path.join(repo, 'Properties', 'NagiosGen.xml')
newconfigpath = os.path.join(repo, 'NagiosGen')
newconfigfile = os.path.join(newconfigpath, 'config.xml')
parentsfile = os.path.join(newconfigpath, 'parents.xml')
if not os.path.exists(oldconfigfile):
print("%s does not exist, nothing to do" % oldconfigfile)
return 1
if not os.path.exists(newconfigpath):
print("%s does not exist, cannot write %s" %
(newconfigpath, newconfigfile))
return 2
newconfig = lxml.etree.XML("<NagiosGen/>")
oldconfig = lxml.etree.parse(oldconfigfile)
for host in oldconfig.getroot().getchildren():
if host.tag == lxml.etree.Comment:
# skip comments
continue
if host.tag == 'default':
print("default tag will not be converted; use a suitable Group tag instead")
continue
newhost = lxml.etree.Element("Client", name=host.tag)
for opt in host:
newopt = lxml.etree.Element("Option", name=opt.tag)
newopt.text = opt.text
newhost.append(newopt)
newconfig.append(newhost)
# parse the parents config, if it exists
if os.path.exists(parentsfile):
parentsconfig = lxml.etree.parse(parentsfile)
for el in parentsconfig.xpath("//Depend"):
newhost = newconfig.find("Client[@name='%s']" % el.get("name"))
if newhost is not None:
newparents = newhost.find("Option[@name='parents']")
if newparents is not None:
newparents.text += "," + el.get("on")
else:
newparents = lxml.etree.Element("Option", name="parents")
newparents.text = el.get("on")
newhost.append(newparents)
else:
newhost = lxml.etree.Element("Client", name=el.get("name"))
newparents = lxml.etree.Element("Option", name="parents")
newparents.text = el.get("on")
newhost.append(newparents)
newconfig.append(newhost)
try:
open(newconfigfile, 'w').write(lxml.etree.tostring(newconfig,
pretty_print=True))
print("%s written" % newconfigfile)
except IOError:
print("Failed to write %s" % newconfigfile)
if __name__ == '__main__':
sys.exit(main())
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