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

# Copyright 2011 OpenStack, LLC
# 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 All nova services.

This script attempts to start all the nova services in one process.  Each
service is started in its own greenthread.  Please note that exceptions and
sys.exit() on the starting of a service are logged and the script will
continue attempting to launch the rest of the services.

"""

import eventlet
eventlet.monkey_patch()

import os
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)


from nova import flags
from nova import log as logging
from nova import service
from nova import utils
from nova.objectstore import s3server


if __name__ == '__main__':
    utils.default_flagfile()
    flags.FLAGS(sys.argv)
    logging.setup()
    utils.monkey_patch()
    servers = []
    # nova-api
    for api in flags.FLAGS.enabled_apis:
        try:
            servers.append(service.WSGIService(api))
        except (Exception, SystemExit):
            logging.exception(_('Failed to load %s') % '%s-api' % api)
    # nova-objectstore
    try:
        servers.append(s3server.get_wsgi_server())
    except (Exception, SystemExit):
        logging.exception(_('Failed to load %s') % 'objectstore-wsgi')
    for binary in ['nova-xvpvncproxy', 'nova-compute', 'nova-volume',
                   'nova-network', 'nova-scheduler', 'nova-vsa']:
        try:
            servers.append(service.Service.create(binary=binary))
        except (Exception, SystemExit):
            logging.exception(_('Failed to load %s' % binary))
    service.serve(*servers)
    service.wait()
