# Copyright 2010 United States Government as represented by the
# Administrator of the National Aeronautics and Space Administration.
# All Rights Reserved.
# Copyright 2012 Red Hat, Inc.
# Copyright 2013 NTT corp.
#
#    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.

"""Command-line flag library.

Emulates gflags by wrapping cfg.ConfigOpts.

The idea is to move fully to cfg eventually, and this wrapper is a
stepping stone.

"""

import socket

from oslo.config import cfg

from cinder.openstack.common.gettextutils import _


CONF = cfg.CONF


def _get_my_ip():
    """
    Returns the actual ip of the local machine.

    This code figures out what source address would be used if some traffic
    were to be sent out to some well known address on the Internet. In this
    case, a Google DNS server is used, but the specific address does not
    matter much.  No traffic is actually sent.
    """
    try:
        csock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
        csock.connect(('8.8.8.8', 80))
        (addr, port) = csock.getsockname()
        csock.close()
        return addr
    except socket.error:
        return "127.0.0.1"


core_opts = [
    cfg.StrOpt('api_paste_config',
               default="api-paste.ini",
               help='File name for the paste.deploy config for cinder-api'),
    cfg.StrOpt('state_path',
               default='/var/lib/cinder',
               deprecated_name='pybasedir',
               help="Top-level directory for maintaining cinder's state"), ]

debug_opts = [
]

CONF.register_cli_opts(core_opts)
CONF.register_cli_opts(debug_opts)

global_opts = [
    cfg.StrOpt('my_ip',
               default=_get_my_ip(),
               help='IP address of this host'),
    cfg.StrOpt('glance_host',
               default='$my_ip',
               help='Default glance host name or IP'),
    cfg.IntOpt('glance_port',
               default=9292,
               help='Default glance port'),
    cfg.ListOpt('glance_api_servers',
                default=['$glance_host:$glance_port'],
                help='A list of the glance API servers available to cinder '
                     '([hostname|ip]:port)'),
    cfg.IntOpt('glance_api_version',
               default=1,
               help='Version of the glance API to use'),
    cfg.IntOpt('glance_num_retries',
               default=0,
               help='Number retries when downloading an image from glance'),
    cfg.BoolOpt('glance_api_insecure',
                default=False,
                help='Allow to perform insecure SSL (https) requests to '
                     'glance'),
    cfg.BoolOpt('glance_api_ssl_compression',
                default=False,
                help='Enables or disables negotiation of SSL layer '
                     'compression. In some cases disabling compression '
                     'can improve data throughput, such as when high '
                     'network bandwidth is available and you use '
                     'compressed image formats like qcow2.'),
    cfg.IntOpt('glance_request_timeout',
               default=None,
               help='http/https timeout value for glance operations. If no '
                    'value (None) is supplied here, the glanceclient default '
                    'value is used.'),
    cfg.StrOpt('scheduler_topic',
               default='cinder-scheduler',
               help='The topic that scheduler nodes listen on'),
    cfg.StrOpt('volume_topic',
               default='cinder-volume',
               help='The topic that volume nodes listen on'),
    cfg.StrOpt('backup_topic',
               default='cinder-backup',
               help='The topic that volume backup nodes listen on'),
    cfg.BoolOpt('enable_v1_api',
                default=True,
                help=_("Deploy v1 of the Cinder API.")),
    cfg.BoolOpt('enable_v2_api',
                default=True,
                help=_("Deploy v2 of the Cinder API.")),
    cfg.BoolOpt('api_rate_limit',
                default=True,
                help='Enables or disables rate limit of the API.'),
    cfg.ListOpt('osapi_volume_ext_list',
                default=[],
                help='Specify list of extensions to load when using osapi_'
                     'volume_extension option with cinder.api.contrib.'
                     'select_extensions'),
    cfg.MultiStrOpt('osapi_volume_extension',
                    default=['cinder.api.contrib.standard_extensions'],
                    help='osapi volume extension to load'),
    cfg.StrOpt('volume_manager',
               default='cinder.volume.manager.VolumeManager',
               help='Full class name for the Manager for volume'),
    cfg.StrOpt('backup_manager',
               default='cinder.backup.manager.BackupManager',
               help='Full class name for the Manager for volume backup'),
    cfg.StrOpt('scheduler_manager',
               default='cinder.scheduler.manager.SchedulerManager',
               help='Full class name for the Manager for scheduler'),
    cfg.StrOpt('host',
               default=socket.gethostname(),
               help='Name of this node.  This can be an opaque identifier. '
                    'It is not necessarily a host name, FQDN, or IP address.'),
    # NOTE(vish): default to nova for compatibility with nova installs
    cfg.StrOpt('storage_availability_zone',
               default='nova',
               help='Availability zone of this node'),
    cfg.StrOpt('default_availability_zone',
               default=None,
               help='Default availability zone for new volumes. If not set, '
                    'the storage_availability_zone option value is used as '
                    'the default for new volumes.'),
    cfg.StrOpt('default_volume_type',
               default=None,
               help='Default volume type to use'),
    cfg.StrOpt('volume_usage_audit_period',
               help='Time period for which to generate volume usages. '
                    'The options are hour, day, month, or year.'),
    cfg.StrOpt('rootwrap_config',
               default='/etc/cinder/rootwrap.conf',
               help='Path to the rootwrap configuration file to use for '
                    'running commands as root'),
    cfg.BoolOpt('monkey_patch',
                default=False,
                help='Enable monkey patching'),
    cfg.ListOpt('monkey_patch_modules',
                default=[],
                help='List of modules/decorators to monkey patch'),
    cfg.IntOpt('service_down_time',
               default=60,
               help='Maximum time since last check-in for a service to be '
                    'considered up'),
    cfg.StrOpt('volume_api_class',
               default='cinder.volume.api.API',
               help='The full class name of the volume API class to use'),
    cfg.StrOpt('backup_api_class',
               default='cinder.backup.api.API',
               help='The full class name of the volume backup API class'),
    cfg.StrOpt('auth_strategy',
               default='noauth',
               help='The strategy to use for auth. Supports noauth, keystone, '
                    'and deprecated.'),
    cfg.ListOpt('enabled_backends',
                default=None,
                help='A list of backend names to use. These backend names '
                     'should be backed by a unique [CONFIG] group '
                     'with its options'),
    cfg.BoolOpt('no_snapshot_gb_quota',
                default=False,
                help='Whether snapshots count against GigaByte quota'),
    cfg.StrOpt('transfer_api_class',
               default='cinder.transfer.api.API',
               help='The full class name of the volume transfer API class'), ]

CONF.register_opts(global_opts)
