#!/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.

"""
Tornado daemon for the main API endpoint.
"""

import logging
import os
import sys
from tornado import httpserver
from tornado import ioloop

# If ../nova/__init__.py exists, add ../ to Python search path, so that
# it will override what happens to be installed in /usr/(local/)lib/python...
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 server
from nova import utils
from nova.endpoint import admin
from nova.endpoint import api
from nova.endpoint import cloud

FLAGS = flags.FLAGS


def main(_argv):
    """Load the controllers and start the tornado I/O loop."""
    controllers = {
        'Cloud': cloud.CloudController(),
        'Admin': admin.AdminController()}
    _app = api.APIServerApplication(controllers)

    io_inst = ioloop.IOLoop.instance()
    http_server = httpserver.HTTPServer(_app)
    http_server.listen(FLAGS.cc_port)
    logging.debug('Started HTTP server on %s', FLAGS.cc_port)
    io_inst.start()


if __name__ == '__main__':
    utils.default_flagfile()
    server.serve('nova-api', main)