#!/usr/bin/python2.7

# Copyright (c) 2015, Oracle and/or its affiliates. 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.

import glob

import os

from subprocess import check_call, Popen, PIPE

import sys

import traceback

import smf_include

def start():

    # pull out the current version of config/upgrade-id

    p = Popen(['/usr/bin/svcprop', '-p', 'config/upgrade-id',

               os.environ['SMF_FMRI']], stdout=PIPE, stderr=PIPE)

    curr_ver, _err = p.communicate()

    curr_ver = curr_ver.strip()

    # extract the openstack-upgrade-id from the pkg

    p = Popen(['/usr/bin/pkg', 'contents', '-H', '-t', 'set', '-o', 'value',

               '-a', 'name=openstack.upgrade-id',

               'pkg:/cloud/openstack/swift'], stdout=PIPE, stderr=PIPE)

    pkg_ver, _err = p.communicate()

    pkg_ver = pkg_ver.strip()

    if curr_ver == pkg_ver:

        # No need to upgrade

        sys.exit(smf_include.SMF_EXIT_OK)

    # look for any .new files

    if glob.glob('/etc/swift/*.new'):

        # the versions are different, so perform an upgrade

        # modify the configuration files

        modify_conf('/etc/swift/container-reconciler.conf')

        modify_conf('/etc/swift/container-sync-realms.conf')

        modify_conf('/etc/swift/memcache.conf')

        modify_conf('/etc/swift/object-expirer.conf')

    # update the current version

    check_call(['/usr/sbin/svccfg', '-s', os.environ['SMF_FMRI'], 'setprop',

               'config/upgrade-id', '=', pkg_ver])

    check_call(['/usr/sbin/svccfg', '-s', os.environ['SMF_FMRI'], 'refresh'])

    sys.exit(smf_include.SMF_EXIT_OK)

if __name__ == '__main__':

    os.putenv('LC_ALL', 'C')

    try:

        smf_include.smf_main()

    except Exception as err:

        print 'Unknown error:  %s' % err

        print

        traceback.print_exc(file=sys.stdout)

        sys.exit(smf_include.SMF_EXIT_ERR_FATAL)