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#!/usr/bin/env python
import os
import sys
import lxml.etree
from Bcfg2.Compat import ConfigParser
import Bcfg2.Options
XI_NAMESPACE = "http://www.w3.org/2001/XInclude"
XI = "{%s}" % XI_NAMESPACE
def place_source(xdata, source, groups):
""" given a source's group memberships, place it appropriately
within the given XML document tree """
if not groups:
xdata.append(source)
else:
for group in groups:
match = xdata.xpath("Group[@name='%s']" % group)
if match:
groups.remove(group)
xdata.replace(match[0], place_source(match[0], source, groups))
return xdata
# no group found to put this source into
group = groups.pop()
xdata.append(place_source(lxml.etree.Element("Group", name=group),
source, groups))
return xdata
def main():
parser = Bcfg2.Options.get_parser(
description="Migrate from Bcfg2 1.1-style Packages configuration to "
"1.2-style")
parser.add_options([Bcfg2.Options.Common.repository])
parser.parse()
repo = Bcfg2.Options.setup.repository
configpath = os.path.join(repo, 'Packages')
oldconfigfile = os.path.join(configpath, 'config.xml')
newconfigfile = os.path.join(configpath, 'packages.conf')
newsourcesfile = os.path.join(configpath, 'sources.xml')
if not os.path.exists(oldconfigfile):
print("%s does not exist, nothing to do" % oldconfigfile)
return 1
if not os.path.exists(configpath):
print("%s does not exist, cannot write %s" % (configpath,
newconfigfile))
return 2
newconfig = ConfigParser.SafeConfigParser()
newconfig.add_section("global")
oldconfig = lxml.etree.parse(oldconfigfile).getroot()
config = oldconfig.xpath('//Sources/Config')
if config:
if config[0].get("resolver", "enabled").lower() == "disabled":
newconfig.add_option("global", "resolver", "disabled")
if config[0].get("metadata", "enabled").lower() == "disabled":
newconfig.add_option("global", "metadata", "disabled")
newconfig.write(open(newconfigfile, "w"))
print("%s written" % newconfigfile)
oldsources = [oldconfigfile]
while oldsources:
oldfile = oldsources.pop()
oldsource = lxml.etree.parse(oldfile).getroot()
if oldfile == oldconfigfile:
newfile = newsourcesfile
else:
newfile = os.path.join(configpath,
oldfile.replace("%s/" % configpath, ''))
newsource = lxml.etree.Element("Sources", nsmap=oldsource.nsmap)
for el in oldsource.getchildren():
if el.tag == lxml.etree.Comment or el.tag == 'Config':
# skip comments and Config
continue
if el.tag == XI + 'include':
oldsources.append(os.path.join(configpath, el.get('href')))
newsource.append(el)
continue
# element must be a *Source
newel = lxml.etree.Element("Source",
type=el.tag.replace("Source",
"").lower())
try:
newel.set('recommended', el.find('Recommended').text.lower())
except AttributeError:
pass
for tag in ['RawURL', 'URL', 'Version']:
try:
newel.set(tag.lower(), el.find(tag).text)
except AttributeError:
pass
for child in el.getchildren():
if child.tag in ['Component', 'Blacklist', 'Whitelist', 'Arch']:
newel.append(child)
groups = [e.text for e in el.findall("Group")]
newsource = place_source(newsource, newel, groups)
try:
open(newfile, 'w').write(lxml.etree.tostring(newsource,
pretty_print=True))
print("%s written" % newfile)
except IOError:
print("Failed to write %s" % newfile)
if __name__ == '__main__':
sys.exit(main())
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