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#!/usr/bin/python
#
# Copyright (C) 2008
# Red Hat, Inc. All rights reserved.
#
# 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.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
# Author(s): Chris Lumens <clumens@redhat.com>
# This yum plugin handles the upgrade blacklist. This is a repo-specific
# metadata file that tells us about packages that have been obsoleted by
# some other package and should therefore be removed on upgrade. Usually
# packages themselves provide this information through Obsoletes:, but
# with multilib we can't always count on that.
from yum.plugins import TYPE_CORE
try:
from xml.etree import cElementTree
except ImportError:
import cElementTree
iterparse = cElementTree.iterparse
requires_api_version = '2.6'
plugin_type = (TYPE_CORE, )
def exclude_hook(conduit):
rpmdb = conduit.getRpmDB()
tsinfo = conduit.getTsInfo()
for repo in conduit.getRepos().listEnabled():
try:
infile = repo.retrieveMD("group")
except:
continue
for event, elem in iterparse(infile):
if elem.tag == "blacklist":
for child in elem.getchildren():
if elem.tag != "package":
continue
name = elem.get("name")
try:
arch = elem.get("arch")
except:
arch = None
for po in rpmdb.searchNevra(name=name, arch=arch):
tsinfo.addErase(po)
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