#!/usr/bin/env python
# vim: tabstop=4 shiftwidth=4 softtabstop=4

# Copyright 2010 United States Government as represented by the
# Administrator of the National Aeronautics and Space Administration.
# 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.

"""Starter script for Nova API.

Starts both the EC2 and OpenStack APIs in separate processes.

"""

import os
import signal
import sys


possible_topdir = os.path.normpath(os.path.join(os.path.abspath(
        sys.argv[0]), os.pardir, os.pardir))
if os.path.exists(os.path.join(possible_topdir, "nova", "__init__.py")):
    sys.path.insert(0, possible_topdir)

import nova.service
import nova.utils

from nova import flags


FLAGS = flags.FLAGS


def main():
    """Launch EC2 and OSAPI services."""
    nova.utils.Bootstrapper.bootstrap_binary(sys.argv)

    launcher = nova.service.Launcher()

    for api in FLAGS.enabled_apis:
        service = nova.service.WSGIService(api)
        launcher.launch_service(service)

    signal.signal(signal.SIGTERM, lambda *_: launcher.stop())

    try:
        launcher.wait()
    except KeyboardInterrupt:
        launcher.stop()


if __name__ == '__main__':
    sys.exit(main())