#!/usr/bin/env python
# vim: tabstop=4 shiftwidth=4 softtabstop=4

# Copyright (c) 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.

"""Admin/debug script to wipe rabbitMQ (AMQP) queues manila uses.
   This can be used if you need to change durable options on queues,
   or to wipe all messages in the queue system if things are in a
   serious bad way.

"""

import datetime
import os
import sys
import time

# If ../manila/__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, 'manila', '__init__.py')):
    sys.path.insert(0, POSSIBLE_TOPDIR)

from manila.openstack.common import gettextutils
gettextutils.install('manila')

from oslo.config import cfg

from manila import context
from manila import exception
from manila import flags
from manila.openstack.common import log as logging
from manila.openstack.common import rpc

delete_exchange_opt = \
    cfg.BoolOpt('delete_exchange',
                default=False,
                help='delete manila exchange too.')

FLAGS = flags.FLAGS
FLAGS.register_cli_opt(delete_exchange_opt)


def delete_exchange(exch):
    conn = rpc.create_connection()
    x = conn.get_channel()
    x.exchange_delete(exch)


def delete_queues(queues):
    conn = rpc.create_connection()
    x = conn.get_channel()
    for q in queues:
        x.queue_delete(q)

if __name__ == '__main__':
    args = flags.parse_args(sys.argv)
    logging.setup("manila")
    delete_queues(args[1:])
    if FLAGS.delete_exchange:
        delete_exchange(FLAGS.control_exchange)