#!/usr/bin/env python
# -*- encoding: utf-8 -*-
#
# Copyright © 2012 New Dream Network, LLC (DreamHost)
#
# Author: Doug Hellmann <doug.hellmann@dreamhost.com>
#
# 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.
"""Set up the development API server.
"""
import os
import sys
from wsgiref import simple_server

from pecan import configuration

from ceilometer.api import acl
from ceilometer.api import app
from ceilometer.api import config as api_config
from ceilometer.openstack.common import cfg
from ceilometer.openstack.common import log as logging


if __name__ == '__main__':
    # Register keystone middleware option before
    # parsing the config file and command line
    # inputs.
    acl.register_opts(cfg.CONF)

    # Parse OpenStack config file and command line options, then
    # configure logging.
    cfg.CONF(sys.argv[1:])
    logging.setup('ceilometer.api')

    # Set up the pecan configuration
    filename = api_config.__file__.replace('.pyc', '.py')
    pecan_config = configuration.conf_from_file(filename)

    # Build the WSGI app
    root = app.setup_app(pecan_config,
                         extra_hooks=[acl.AdminAuthHook()])
    root = acl.install(root, cfg.CONF)

    # Create the WSGI server and start it
    host, port = '0.0.0.0', int(cfg.CONF.metering_api_port)
    srv = simple_server.make_server(host, port, root)

    print 'Starting server in PID %s' % os.getpid()

    if host == '0.0.0.0':
        print 'serving on 0.0.0.0:%s, view at http://127.0.0.1:%s' % \
            (port, port)
    else:
        print "serving on http://%s:%s" % (host, port)

    try:
        srv.serve_forever()
    except KeyboardInterrupt:
        # allow CTRL+C to shutdown without an error
        pass
