#!/usr/bin/python2.7

# Copyright (c) 2015, 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 glob

import os

from subprocess import check_call, Popen, PIPE

import sys

import traceback

import smf_include

from openstack_common import alter_mysql_tables, create_backups, modify_conf

NEUTRON_CONF_MAPPINGS = {

    ('DEFAULT', 'nova_region_name'): ('nova', 'region_name'),

}

NEUTRON_CONF_EXCEPTIONS = [

    ('database', 'connection'),

    ('keystone_authtoken', 'auth_uri'),

    ('keystone_authtoken', 'identity_uri'),

    ('keystone_authtoken', 'admin_tenant_name'),

    ('keystone_authtoken', 'admin_user'),

    ('keystone_authtoken', 'admin_password'),

    ('keystone_authtoken', 'signing_dir'),

    # Do not overwrite EVS options with OVS options since upgrade

    # doesn't handle EVS to OVS upgrade

    ('DEFAULT', 'core_plugin'),

    ('DEFAULT', 'service_plugins'),

]

L3_AGENT_EXCEPTIONS = [

    # Do not overwrite EVS options with OVS options since upgrade

    # doesn't handle EVS to OVS migration

    ('DEFAULT', 'ovs_integration_bridge'),

    ('DEFAULT', 'interface_driver'),

    ('DEFAULT', 'external_network_bridge'),

]

DHCP_AGENT_EXCEPTIONS = [

    # Do not overwrite EVS options with OVS options since upgrade

    # doesn't handle EVS to OVS migration

    ('DEFAULT', 'ovs_integration_bridge'),

    ('DEFAULT', 'interface_driver'),

    ('DEFAULT', 'evs_controller'),

]

METADATA_AGENT_EXCEPTIONS = [

    ('DEFAULT', 'auth_url'),

    ('DEFAULT', 'auth_region'),

    ('DEFAULT', 'admin_tenant_name'),

    ('DEFAULT', 'admin_user'),

    ('DEFAULT', 'admin_password'),

    ('DEFAULT', 'metadata_workers'),

]

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/neutron'], 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/neutron/*.new'):

        # the versions are different, so perform an upgrade

        # modify the configuration files

        # backup all the old configuration files

        create_backups('/etc/neutron')

        modify_conf('/etc/neutron/api-paste.ini')

        modify_conf('/etc/neutron/dhcp_agent.ini')

        modify_conf('/etc/neutron/l3_agent.ini', mapping=None,

                    exception_list=L3_AGENT_EXCEPTIONS)

        modify_conf('/etc/neutron/neutron.conf', NEUTRON_CONF_MAPPINGS,

                    NEUTRON_CONF_EXCEPTIONS)

        modify_conf('/etc/neutron/metadata_agent.ini', mapping=None,

                    exception_list=METADATA_AGENT_EXCEPTIONS)

    # 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)