#!/usr/bin/python2.7

# Copyright (c) 2013, 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 CalledProcessError, check_call
import sys

import smf_include


def start():
    cfg_files = sys.argv[2:3]
    # It is ML2 plugin for now, until we introduce another plugin
    cfg_files.append("/etc/neutron/plugins/ml2/ml2_conf.ini")

    # verify paths are valid
    for f in cfg_files:
        if not os.path.exists(f) or not os.access(f, os.R_OK):
            print '%s does not exist or is not readable' % f
            return smf_include.SMF_EXIT_ERR_CONFIG

    # sync the database to have the Kilo schema
    cmd = ["/usr/bin/neutron-db-manage", "--config-file", cfg_files[0],
           "--config-file", cfg_files[1], "upgrade", "head"]
    try:
        check_call(cmd)
    except CalledProcessError as err:
        print "Unable to create database for Neutron: %s" % err
        sys.exit(smf_include.SMF_EXIT_ERR_CONFIG)

    cmd = "/usr/bin/pfexec /usr/lib/neutron/neutron-server --config-file %s " \
        "--config-file %s" % tuple(cfg_files)
    smf_include.smf_subprocess(cmd)

if __name__ == "__main__":
    os.putenv("LC_ALL", "C")
    smf_include.smf_main()