# Copyright (c) 2013 OpenStack Foundation
# 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.

"""
Unit Tests for ml2 rpc
"""

import mock

from neutron.agent import rpc as agent_rpc
from neutron.common import topics
from neutron.openstack.common import context
from neutron.openstack.common import rpc
from neutron.plugins.ml2.drivers import type_tunnel
from neutron.plugins.ml2 import rpc as plugin_rpc
from neutron.tests import base


class RpcApiTestCase(base.BaseTestCase):

    def _test_rpc_api(self, rpcapi, topic, method, rpc_method, **kwargs):
        ctxt = context.RequestContext('fake_user', 'fake_project')
        expected_retval = 'foo' if method == 'call' else None
        expected_msg = rpcapi.make_msg(method, **kwargs)
        expected_msg['version'] = rpcapi.BASE_RPC_API_VERSION
        if rpc_method == 'cast' and method == 'run_instance':
            kwargs['call'] = False

        rpc_method_mock = mock.Mock()
        rpc_method_mock.return_value = expected_retval
        setattr(rpc, rpc_method, rpc_method_mock)

        retval = getattr(rpcapi, method)(ctxt, **kwargs)

        self.assertEqual(retval, expected_retval)

        expected_args = [ctxt, topic, expected_msg]
        for arg, expected_arg in zip(rpc_method_mock.call_args[0],
                                     expected_args):
            self.assertEqual(arg, expected_arg)

    def test_delete_network(self):
        rpcapi = plugin_rpc.AgentNotifierApi(topics.AGENT)
        self._test_rpc_api(rpcapi,
                           topics.get_topic_name(topics.AGENT,
                                                 topics.NETWORK,
                                                 topics.DELETE),
                           'network_delete', rpc_method='fanout_cast',
                           network_id='fake_request_spec')

    def test_port_update(self):
        rpcapi = plugin_rpc.AgentNotifierApi(topics.AGENT)
        self._test_rpc_api(rpcapi,
                           topics.get_topic_name(topics.AGENT,
                                                 topics.PORT,
                                                 topics.UPDATE),
                           'port_update', rpc_method='fanout_cast',
                           port='fake_port',
                           network_type='fake_network_type',
                           segmentation_id='fake_segmentation_id',
                           physical_network='fake_physical_network')

    def test_tunnel_update(self):
        rpcapi = plugin_rpc.AgentNotifierApi(topics.AGENT)
        self._test_rpc_api(rpcapi,
                           topics.get_topic_name(topics.AGENT,
                                                 type_tunnel.TUNNEL,
                                                 topics.UPDATE),
                           'tunnel_update', rpc_method='fanout_cast',
                           tunnel_ip='fake_ip', tunnel_type='gre')

    def test_device_details(self):
        rpcapi = agent_rpc.PluginApi(topics.PLUGIN)
        self._test_rpc_api(rpcapi, topics.PLUGIN,
                           'get_device_details', rpc_method='call',
                           device='fake_device',
                           agent_id='fake_agent_id')

    def test_update_device_down(self):
        rpcapi = agent_rpc.PluginApi(topics.PLUGIN)
        self._test_rpc_api(rpcapi, topics.PLUGIN,
                           'update_device_down', rpc_method='call',
                           device='fake_device',
                           agent_id='fake_agent_id',
                           host='fake_host')

    def test_tunnel_sync(self):
        rpcapi = agent_rpc.PluginApi(topics.PLUGIN)
        self._test_rpc_api(rpcapi, topics.PLUGIN,
                           'tunnel_sync', rpc_method='call',
                           tunnel_ip='fake_tunnel_ip',
                           tunnel_type=None)

    def test_update_device_up(self):
        rpcapi = agent_rpc.PluginApi(topics.PLUGIN)
        self._test_rpc_api(rpcapi, topics.PLUGIN,
                           'update_device_up', rpc_method='call',
                           device='fake_device',
                           agent_id='fake_agent_id',
                           host='fake_host')