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# 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 decorators

from devstack import log as logging

from devstack import utils

LOG = logging.getLogger("devstack.packager")

class Packager(object):

@decorators.log_debug

def __init__(self, distro, keep_packages):

self.distro = distro

self.keep_packages = keep_packages

def install(self, pkg):

raise NotImplementedError()

def remove(self, pkg):

if self.keep_packages:

return False

else:

return self._remove(pkg)

def pre_install(self, pkgs, params=None):

for info in pkgs:

cmds = info.get('pre-install')

if cmds:

LOG.info("Running pre-install commands for package %s.",

info['name'])

utils.execute_template(*cmds, params=params)

def post_install(self, pkgs, params=None):

for info in pkgs:

cmds = info.get('post-install')

if cmds:

LOG.info("Running post-install commands for package %s.",

info['name'])

utils.execute_template(*cmds, params=params)

def _remove(self, pkg):

raise NotImplementedError()