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'''This module implements a package management scheme for all images'''
__revision__ = '$Revision$'
import re
from syslog import syslog, LOG_ERR
import Bcfg2.Server.Plugin
class PNode(Bcfg2.Server.Plugin.LNode):
'''PNode has a list of packages available at a particular group intersection'''
splitters = {'rpm':re.compile('^(?P<name>[\w\+\d\.]+(-[\w\+\d\.]+)*)-' + \
'(?P<version>[\w\d\.]+-([\w\d\.]+))\.(?P<arch>\w+)\.rpm$'),
'encap':re.compile('^(?P<name>\w+)-(?P<version>[\w\d\.-]+).encap.*$')}
def __init__(self, data, plist, parent=None):
# copy local attributes to all child nodes if no local attribute exists
for child in data.getchildren():
for attr in [key for key in data.attrib.keys() if key != 'name' and not child.attrib.has_key(key)]:
child.set(attr, data.get(attr))
Bcfg2.Server.Plugin.LNode.__init__(self, data, plist, parent)
for pkg in data.findall('./Package'):
if pkg.attrib.has_key('name') and pkg.get('name') not in plist:
plist.append(pkg.get('name'))
if pkg.attrib.has_key('simplefile'):
pkg.set('url', "%s/%s" % (pkg.get('uri'), pkg.get('simplefile')))
self.contents[pkg.get('name')] = pkg.attrib
else:
if pkg.attrib.has_key('file'):
pkg.set('url', '%s/%s' % (pkg.get('uri'), pkg.get('file')))
if self.splitters.has_key(pkg.get('type')):
mdata = self.splitters[pkg.get('type')].match(pkg.get('file'))
if not mdata:
syslog(LOG_ERR, "Pkgmgr: Failed to match pkg %s" % pkg.get('file'))
continue
pkgname = mdata.group('name')
self.contents[pkgname] = mdata.groupdict()
if pkg.attrib.get('file'):
self.contents[pkgname]['url'] = pkg.get('url')
self.contents[pkgname]['type'] = pkg.get('type')
if pkgname not in plist:
plist.append(pkgname)
else:
self.contents[pkg.get('name')] = pkg.attrib
class PkgSrc(Bcfg2.Server.Plugin.XMLSrc):
'''PkgSrc files contain a PNode hierarchy that returns matching package entries'''
__node__ = PNode
class Pkgmgr(Bcfg2.Server.Plugin.XMLPrioDir):
'''This is a generator that handles package assignments'''
__name__ = 'Pkgmgr'
__version__ = '$Id$'
__author__ = 'bcfg-dev@mcs.anl.gov'
__child__ = PkgSrc
__element__ = 'Package'
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