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#!/usr/bin/env python
from re import compile
from Generator import Generator
from GeneratorUtils import DirectoryBacked, XMLFileBacked
from Types import Package
class PackageEntry(XMLFileBacked):
__identifier__ = 'image'
rpm = compile('^(?P<name>[\w\+\d\.]+(-[\w\+\d\.]+)*)-(?P<version>[\w\d\.]+-([\w\d\.]+))\.(?P<arch>\w+)\.rpm$')
def Index(self):
XMLFileBacked.Index(self)
self.packages = {}
for location in self.entries:
for pkg in location.getchildren():
if pkg.attrib.has_key("file"):
m = self.rpm.match(pkg.attrib['file'])
if not m:
print "failed to rpm match %s"%(pkg.attrib['file'])
continue
self.packages[m.group('name')] = m.groupdict()
self.packages[m.group('name')]['file'] = pkg.attrib['file']
self.packages[m.group('name')]['uri'] = location.attrib['uri']
self.packages[m.group('name')]['type'] = 'rpm'
else:
self.packages[pkg.attrib['name']] = pkg.attrib
class PackageDir(DirectoryBacked):
__child__ = PackageEntry
class pkgmgr(Generator):
'''This is a generator that handles service assignments'''
__name__ = 'pkgmgr'
__version__ = '$Id$'
__author__ = 'bcfg-dev@mcs.anl.gov'
def __setup__(self):
self.pkgdir=PackageDir(self.data,self.core.fam)
def FindHandler(self, entry):
if entry.tag != 'Package':
raise KeyError, (entry.tag, entry.attrib['name'])
return self.LocatePackage
def LocatePackage(self, entry, metadata):
pkgname = entry.attrib['name']
pl = self.pkgdir["%s.xml"%(metadata.image)]
if pl.packages.has_key(pkgname):
p = pl.packages[pkgname]
if p['type'] == 'rpm':
entry.attrib.update({'url':"%s/%s"%(p['uri'],p['file']), 'version':p['version']})
else:
raise KeyError, ("Package", name)
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