anvil/devstack/packaging/yum.py

73 lines
2.2 KiB
Python

# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright (C) 2012 Yahoo! Inc. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
from devstack import log as logging
from devstack import packager as pack
from devstack import shell as sh
LOG = logging.getLogger("devstack.packaging.yum")
# Root yum command
YUM_CMD = ['yum']
# Tolerant is enabled since we might already have it installed/erased
YUM_INSTALL = ["install", "-y", "-t"]
YUM_REMOVE = ['erase', '-y', "-t"]
# Yum separates its pkg names and versions with a dash
VERSION_TEMPL = "%s-%s"
class YumPackager(pack.Packager):
def __init__(self, distro):
pack.Packager.__init__(self, distro)
def _format_pkg_name(self, name, version):
if version:
return VERSION_TEMPL % (name, version)
else:
return name
def _execute_yum(self, cmd, **kargs):
full_cmd = YUM_CMD + cmd
return sh.execute(*full_cmd, run_as_root=True,
check_exit_code=True,
**kargs)
def _remove_special(self, name, info):
return False
def _install_special(self, name, info):
return False
def install(self, pkg):
name = pkg['name']
if self._install_special(name, pkg):
return
else:
pkg_full = self._format_pkg_name(name, pkg.get("version"))
cmd = YUM_INSTALL + [pkg_full]
self._execute_yum(cmd)
def _remove(self, pkg):
name = pkg['name']
if self._remove_special(name, pkg):
return True
pkg_full = self._format_pkg_name(name, pkg.get("version"))
cmd = YUM_REMOVE + [pkg_full]
self._execute_yum(cmd)
return True