#!/usr/bin/python2.7

# Copyright (c) 2016, 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 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/horizon'], 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)

    # In versions of OpenStack prior to Mitaka, 'openstack-dashboard-http.conf'

    # and 'openstack-dashboard-tls.conf' were delivered by the

    # cloud/openstack/horizon package.  Look for the existence of either file

    # in Apache's conf.d directory.  If either are found, exit the service

    # degraded so the administrator can investigate why.

    for filename in ['openstack-dashboard-http.conf',

                     'openstack-dashboard-tls.conf']:

        path = os.path.join('/etc/apache2/2.4/conf.d', filename)

        if os.path.exists(path) or os.path.islink(path):

            reason = '/etc/apache2/2.4/conf.d/%s found.  ' % filename + \

                     'Starting with the Mitaka release, Horizon is now a ' + \

                     'stand-alone service and should be configured ' + \

                     'independently from the ' + \

                     'svc:/network/http:apache24 service.  ' + \

                     '/etc/apache2/2.4/conf.d/%s should be ' % filename + \

                     'removed before restarting the ' + \

                     'svc:/network/http:apache24 service'

            smf_include.smf_method_exit(smf_include.SMF_EXIT_DEGRADED,

                                        'Apache_Configured', reason)

    # 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 RuntimeError:

        sys.exit(smf_include.SMF_EXIT_ERR_FATAL)

    except Exception as err:

        print 'Unknown error:  %s' % err

        print

        traceback.print_exc(file=sys.stdout)

        sys.exit(smf_include.SMF_EXIT_ERR_FATAL)