# Copyright 2011 VMware, Inc., 2014 A10 Networks
# Copyright 2015 Hewlett Packard Enterprise Development LP
#
# 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.

"""
Routines for configuring Kosmos
"""
import os

from oslo_config import cfg
from oslo_db import options as db_options
from oslo_log import log as logging
import oslo_messaging as messaging

from kosmos._i18n import _, _LI
from kosmos.common import utils
from kosmos import version

LOG = logging.getLogger(__name__)

core_opts = [
    cfg.IPOpt('bind_host', default='0.0.0.0',
              help=_("The host IP to bind to")),
    cfg.PortOpt('bind_port', default=9876,
                help=_("The port to bind to")),
    cfg.StrOpt('host', default=utils.get_hostname(),
               help=_("The hostname Kosmos is running on")),
]

core_cli_opts = []


# Register the configuration options
cfg.CONF.register_opts(core_opts)
cfg.CONF.register_cli_opts(core_cli_opts)

cfg.CONF.register_opts([
    cfg.StrOpt(
        'pybasedir',
        default=os.path.abspath(os.path.join(os.path.dirname(__file__),
                                             '../')),
        help='Directory where the kosmos python module is installed'
    ),
    cfg.StrOpt('state-path', default='/var/lib/kosmos',
               help='Top-level directory for maintaining kosmos\'s state'),
])

# Ensure that the control exchange is set correctly
messaging.set_transport_defaults(control_exchange='kosmos')
_SQL_CONNECTION_DEFAULT = 'sqlite://'
# Update the default QueuePool parameters. These can be tweaked by the
# configuration variables - max_pool_size, max_overflow and pool_timeout
db_options.set_defaults(cfg.CONF,
                        connection=_SQL_CONNECTION_DEFAULT,
                        sqlite_db='', max_pool_size=10,
                        max_overflow=20, pool_timeout=10)

logging.register_options(cfg.CONF)


def init(args):
    cfg.CONF(args=args[1:], project='kosmos',
             version='%%prog %s' % version.version_info.release_string())


def setup_logging(conf):
    """Sets up the logging options for a log with supplied name.

    :param conf: a cfg.ConfOpts object
    """
    product_name = "kosmos"
    logging.setup(conf, product_name)
    LOG.info(_LI("Logging enabled!"))


def read_config(prog, argv):
    logging.register_options(cfg.CONF)
    cfg.CONF(argv[1:], project='kosmos', prog=prog)