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#!/usr/bin/python
# This tools is used to insert arbitrary metadata into an RPM repository.
# Example:
# ./modifyrepo.py updateinfo.xml myrepo/repodata
# or in Python:
# >>> from modifyrepo import RepoMetadata
# >>> repomd = RepoMetadata('myrepo/repodata')
# >>> repomd.add('updateinfo.xml')
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# (C) Copyright 2006 Red Hat, Inc.
# Luke Macken <lmacken@redhat.com>
# modified by Seth Vidal 2008
import os
import sys
from createrepo import __version__
from createrepo.utils import checksum_and_rename, GzipFile, MDError
from yum.misc import checksum
from yum.repoMDObject import RepoMD, RepoMDError, RepoData
from xml.dom import minidom
from optparse import OptionParser
class RepoMetadata:
def __init__(self, repo):
""" Parses the repomd.xml file existing in the given repo directory. """
self.repodir = os.path.abspath(repo)
self.repomdxml = os.path.join(self.repodir, 'repomd.xml')
self.checksum_type = 'sha256'
if not os.path.exists(self.repomdxml):
raise MDError, '%s not found' % self.repomdxml
try:
self.repoobj = RepoMD(self.repodir)
self.repoobj.parse(self.repomdxml)
except RepoMDError, e:
raise MDError, 'Could not parse %s' % self.repomdxml
def add(self, metadata, mdtype=None):
""" Insert arbitrary metadata into this repository.
metadata can be either an xml.dom.minidom.Document object, or
a filename.
"""
md = None
if not metadata:
raise MDError, 'metadata cannot be None'
if isinstance(metadata, minidom.Document):
md = metadata.toxml()
mdname = 'updateinfo.xml'
elif isinstance(metadata, str):
if os.path.exists(metadata):
if metadata.endswith('.gz'):
oldmd = GzipFile(filename=metadata, mode='rb')
else:
oldmd = file(metadata, 'r')
md = oldmd.read()
oldmd.close()
mdname = os.path.basename(metadata)
else:
raise MDError, '%s not found' % metadata
else:
raise MDError, 'invalid metadata type'
## Compress the metadata and move it into the repodata
if not mdname.endswith('.gz'):
mdname += '.gz'
if not mdtype:
mdtype = mdname.split('.')[0]
destmd = os.path.join(self.repodir, mdname)
newmd = GzipFile(filename=destmd, mode='wb')
newmd.write(md)
newmd.close()
print "Wrote:", destmd
open_csum = checksum(self.checksum_type, metadata)
csum, destmd = checksum_and_rename(destmd, self.checksum_type)
base_destmd = os.path.basename(destmd)
## Remove any stale metadata
if mdtype in self.repoobj.repoData:
del self.repoobj.repoData[mdtype]
new_rd = RepoData()
new_rd.type = mdtype
new_rd.location = (None, 'repodata/' + base_destmd)
new_rd.checksum = (self.checksum_type, csum)
new_rd.openchecksum = (self.checksum_type, open_csum)
new_rd.size = str(os.stat(destmd).st_size)
new_rd.timestamp = str(os.stat(destmd).st_mtime)
self.repoobj.repoData[new_rd.type] = new_rd
print " type =", new_rd.type
print " location =", new_rd.location[1]
print " checksum =", new_rd.checksum[1]
print " timestamp =", new_rd.timestamp
print " open-checksum =", new_rd.openchecksum[1]
## Write the updated repomd.xml
outmd = file(self.repomdxml, 'w')
outmd.write(self.repoobj.dump_xml())
outmd.close()
print "Wrote:", self.repomdxml
def main(args):
parser = OptionParser(version='modifyrepo version %s' % __version__)
# query options
parser.add_option("--mdtype", dest='mdtype',
help="specific datatype of the metadata, will be derived from the filename if not specified")
parser.usage = "modifyrepo [options] <input_metadata> <output repodata>"
(opts, argsleft) = parser.parse_args(args)
if len(argsleft) != 2:
parser.print_usage()
return 0
metadata = argsleft[0]
repodir = argsleft[1]
try:
repomd = RepoMetadata(repodir)
except MDError, e:
print "Could not access repository: %s" % str(e)
return 1
try:
repomd.add(metadata, mdtype=opts.mdtype)
except MDError, e:
print "Could not add metadata from file %s: %s" % (metadata, str(e))
return 1
if __name__ == '__main__':
ret = main(sys.argv[1:])
sys.exit(ret)
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