#!/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.
# Copyright 2011 OpenStack LLC.
# 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.

"""
Glance API Server
"""

import optparse
import os
import sys

ROOT_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))

sys.path.append(ROOT_DIR)

from glance import version
from glance.common import config
from glance.common import server
import glance.store


def create_options(parser):
    """
    Sets up the CLI and config-file options that may be
    parsed and program commands.

    :param parser: The option parser
    """
    parser.add_option('-H', '--host',
                      dest="host", metavar="ADDRESS",
                      default="0.0.0.0",
                      help="Address of Glance API server. "
                           "Default: %default")
    parser.add_option('-p', '--port',
                      dest="port", metavar="PORT", type=int,
                      default=9292,
                      help="Port the Glance API server listens on. "
                           "Default: %default")
    parser.add_option('--registry-host',
                      dest="registry_host", metavar="ADDRESS",
                      default="0.0.0.0",
                      help="Address of a Glance Registry server. "
                           "Default: %default")
    parser.add_option('--registry-port',
                      dest="registry_port", metavar="PORT", type=int,
                      default=9191,
                      help="Port a Glance Registry server listens on. "
                           "Default: %default")

    glance.store.add_options(parser)
    config.add_common_options(parser)
    config.add_daemon_options(parser)
    config.add_log_options('glance-api', parser)


def main(_args):
    # NOTE(sirp): importing in main so that eventlet is imported AFTER
    # daemonization.  See https://bugs.launchpad.net/bugs/687661
    from glance.common import wsgi
    from glance.server import API
    server = wsgi.Server()
    server.start(API(options), options['port'], host=options['host'])
    server.wait()


if __name__ == '__main__':
    oparser = optparse.OptionParser(version='%%prog %s'
                                    % version.version_string())
    create_options(oparser)
    conf_options = config.get_config_file_options()
    (options, args) = config.parse_options(oparser, defaults=conf_options)

    try:
        config.setup_logging(options)
        server.serve('glance-api', main, options, args)
    except RuntimeError, e:
        sys.exit("ERROR: %s" % e)
