# vim: tabstop=4 shiftwidth=4 softtabstop=4

# Copyright 2012 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 spec

import copy

import mock
import unittest2
from webob import exc
import webtest

from quantum.api import extensions
from quantum.common import config
from quantum.extensions import loadbalancer
from quantum import manager
from quantum.openstack.common import cfg
from quantum.openstack.common import uuidutils
from quantum.plugins.common import constants
from quantum.tests.unit import test_api_v2
from quantum.tests.unit import test_extensions


_uuid = uuidutils.generate_uuid
_get_path = test_api_v2._get_path


class LoadBalancerTestExtensionManager(object):

    def get_resources(self):
        return loadbalancer.Loadbalancer.get_resources()

    def get_actions(self):
        return []

    def get_request_extensions(self):
        return []


class LoadBalancerExtensionTestCase(unittest2.TestCase):

    def setUp(self):

        plugin = 'quantum.extensions.loadbalancer.LoadBalancerPluginBase'
        # Ensure 'stale' patched copies of the plugin are never returned
        manager.QuantumManager._instance = None

        # Ensure existing ExtensionManager is not used
        extensions.PluginAwareExtensionManager._instance = None

        # Create the default configurations
        args = ['--config-file', test_api_v2.etcdir('quantum.conf.test')]
        config.parse(args)

        #just stubbing core plugin with LoadBalancer plugin
        cfg.CONF.set_override('core_plugin', plugin)
        cfg.CONF.set_override('service_plugins', [plugin])

        self._plugin_patcher = mock.patch(plugin, autospec=True)
        self.plugin = self._plugin_patcher.start()
        instance = self.plugin.return_value
        instance.get_plugin_type.return_value = constants.LOADBALANCER

        ext_mgr = LoadBalancerTestExtensionManager()
        self.ext_mdw = test_extensions.setup_extensions_middleware(ext_mgr)
        self.api = webtest.TestApp(self.ext_mdw)

    def tearDown(self):
        self._plugin_patcher.stop()
        self.api = None
        self.plugin = None
        cfg.CONF.reset()

    def test_vip_create(self):
        vip_id = _uuid()
        data = {'vip': {'name': 'vip1',
                        'description': 'descr_vip1',
                        'subnet_id': _uuid(),
                        'address': '127.0.0.1',
                        'port': 80,
                        'protocol': 'HTTP',
                        'pool_id': _uuid(),
                        'session_persistence': {'type': 'dummy'},
                        'connection_limit': 100,
                        'admin_state_up': True,
                        'tenant_id': _uuid()}}
        return_value = copy.copy(data['vip'])
        return_value.update({'status': "ACTIVE", 'id': vip_id})

        instance = self.plugin.return_value
        instance.create_vip.return_value = return_value
        res = self.api.post_json(_get_path('lb/vips'), data)
        instance.create_vip.assert_called_with(mock.ANY,
                                               vip=data)
        self.assertEqual(res.status_int, exc.HTTPCreated.code)
        self.assertTrue('vip' in res.json)
        self.assertEqual(res.json['vip'], return_value)

    def test_vip_list(self):
        vip_id = _uuid()
        return_value = [{'name': 'vip1',
                         'admin_state_up': True,
                         'tenant_id': _uuid(),
                         'id': vip_id}]

        instance = self.plugin.return_value
        instance.get_vips.return_value = return_value

        res = self.api.get(_get_path('lb/vips'))

        instance.get_vips.assert_called_with(mock.ANY, fields=mock.ANY,
                                             filters=mock.ANY)
        self.assertEqual(res.status_int, exc.HTTPOk.code)

    def test_vip_update(self):
        vip_id = _uuid()
        update_data = {'vip': {'admin_state_up': False}}
        return_value = {'name': 'vip1',
                        'admin_state_up': False,
                        'tenant_id': _uuid(),
                        'status': "ACTIVE",
                        'id': vip_id}

        instance = self.plugin.return_value
        instance.update_vip.return_value = return_value

        res = self.api.put_json(_get_path('lb/vips', id=vip_id),
                                update_data)

        instance.update_vip.assert_called_with(mock.ANY, vip_id,
                                               vip=update_data)
        self.assertEqual(res.status_int, exc.HTTPOk.code)
        self.assertTrue('vip' in res.json)
        self.assertEqual(res.json['vip'], return_value)

    def test_vip_get(self):
        vip_id = _uuid()
        return_value = {'name': 'vip1',
                        'admin_state_up': False,
                        'tenant_id': _uuid(),
                        'status': "ACTIVE",
                        'id': vip_id}

        instance = self.plugin.return_value
        instance.get_vip.return_value = return_value

        res = self.api.get(_get_path('lb/vips', id=vip_id))

        instance.get_vip.assert_called_with(mock.ANY, vip_id,
                                            fields=mock.ANY)
        self.assertEqual(res.status_int, exc.HTTPOk.code)
        self.assertTrue('vip' in res.json)
        self.assertEqual(res.json['vip'], return_value)

    def _test_entity_delete(self, entity):
        """ does the entity deletion based on naming convention  """
        entity_id = _uuid()
        res = self.api.delete(_get_path('lb/' + entity + 's', id=entity_id))
        delete_entity = getattr(self.plugin.return_value, "delete_" + entity)
        delete_entity.assert_called_with(mock.ANY, entity_id)
        self.assertEqual(res.status_int, exc.HTTPNoContent.code)

    def test_vip_delete(self):
        self._test_entity_delete('vip')

    def test_pool_create(self):
        pool_id = _uuid()
        hm_id = _uuid()
        data = {'pool': {'name': 'pool1',
                         'description': 'descr_pool1',
                         'subnet_id': _uuid(),
                         'protocol': 'HTTP',
                         'lb_method': 'ROUND_ROBIN',
                         'health_monitors': [hm_id],
                         'admin_state_up': True,
                         'tenant_id': _uuid()}}
        return_value = copy.copy(data['pool'])
        return_value.update({'status': "ACTIVE", 'id': pool_id})

        instance = self.plugin.return_value
        instance.create_pool.return_value = return_value
        res = self.api.post_json(_get_path('lb/pools'), data)
        instance.create_pool.assert_called_with(mock.ANY,
                                                pool=data)
        self.assertEqual(res.status_int, exc.HTTPCreated.code)
        self.assertTrue('pool' in res.json)
        self.assertEqual(res.json['pool'], return_value)

    def test_pool_list(self):
        pool_id = _uuid()
        return_value = [{'name': 'pool1',
                         'admin_state_up': True,
                         'tenant_id': _uuid(),
                         'id': pool_id}]

        instance = self.plugin.return_value
        instance.get_pools.return_value = return_value

        res = self.api.get(_get_path('lb/pools'))

        instance.get_pools.assert_called_with(mock.ANY, fields=mock.ANY,
                                              filters=mock.ANY)
        self.assertEqual(res.status_int, exc.HTTPOk.code)

    def test_pool_update(self):
        pool_id = _uuid()
        update_data = {'pool': {'admin_state_up': False}}
        return_value = {'name': 'pool1',
                        'admin_state_up': False,
                        'tenant_id': _uuid(),
                        'status': "ACTIVE",
                        'id': pool_id}

        instance = self.plugin.return_value
        instance.update_pool.return_value = return_value

        res = self.api.put_json(_get_path('lb/pools', id=pool_id),
                                update_data)

        instance.update_pool.assert_called_with(mock.ANY, pool_id,
                                                pool=update_data)
        self.assertEqual(res.status_int, exc.HTTPOk.code)
        self.assertTrue('pool' in res.json)
        self.assertEqual(res.json['pool'], return_value)

    def test_pool_get(self):
        pool_id = _uuid()
        return_value = {'name': 'pool1',
                        'admin_state_up': False,
                        'tenant_id': _uuid(),
                        'status': "ACTIVE",
                        'id': pool_id}

        instance = self.plugin.return_value
        instance.get_pool.return_value = return_value

        res = self.api.get(_get_path('lb/pools', id=pool_id))

        instance.get_pool.assert_called_with(mock.ANY, pool_id,
                                             fields=mock.ANY)
        self.assertEqual(res.status_int, exc.HTTPOk.code)
        self.assertTrue('pool' in res.json)
        self.assertEqual(res.json['pool'], return_value)

    def test_pool_delete(self):
        self._test_entity_delete('pool')

    def test_pool_stats(self):
        pool_id = _uuid()

        stats = {'stats': 'dummy'}
        instance = self.plugin.return_value
        instance.stats.return_value = stats

        path = _get_path('lb/pools', id=pool_id,
                         action="stats")
        res = self.api.get(path)

        instance.stats.assert_called_with(mock.ANY, pool_id)
        self.assertEqual(res.status_int, exc.HTTPOk.code)
        self.assertTrue('stats' in res.json)
        self.assertEqual(res.json['stats'], stats['stats'])

    def test_member_create(self):
        member_id = _uuid()
        data = {'member': {'pool_id': _uuid(),
                           'address': '127.0.0.1',
                           'port': 80,
                           'weight': 1,
                           'admin_state_up': True,
                           'tenant_id': _uuid()}}
        return_value = copy.copy(data['member'])
        return_value.update({'status': "ACTIVE", 'id': member_id})

        instance = self.plugin.return_value
        instance.create_member.return_value = return_value
        res = self.api.post_json(_get_path('lb/members'), data)
        instance.create_member.assert_called_with(mock.ANY,
                                                  member=data)
        self.assertEqual(res.status_int, exc.HTTPCreated.code)
        self.assertTrue('member' in res.json)
        self.assertEqual(res.json['member'], return_value)

    def test_member_list(self):
        member_id = _uuid()
        return_value = [{'name': 'member1',
                         'admin_state_up': True,
                         'tenant_id': _uuid(),
                         'id': member_id}]

        instance = self.plugin.return_value
        instance.get_members.return_value = return_value

        res = self.api.get(_get_path('lb/members'))

        instance.get_members.assert_called_with(mock.ANY, fields=mock.ANY,
                                                filters=mock.ANY)
        self.assertEqual(res.status_int, exc.HTTPOk.code)

    def test_member_update(self):
        member_id = _uuid()
        update_data = {'member': {'admin_state_up': False}}
        return_value = {'admin_state_up': False,
                        'tenant_id': _uuid(),
                        'status': "ACTIVE",
                        'id': member_id}

        instance = self.plugin.return_value
        instance.update_member.return_value = return_value

        res = self.api.put_json(_get_path('lb/members', id=member_id),
                                update_data)

        instance.update_member.assert_called_with(mock.ANY, member_id,
                                                  member=update_data)
        self.assertEqual(res.status_int, exc.HTTPOk.code)
        self.assertTrue('member' in res.json)
        self.assertEqual(res.json['member'], return_value)

    def test_member_get(self):
        member_id = _uuid()
        return_value = {'admin_state_up': False,
                        'tenant_id': _uuid(),
                        'status': "ACTIVE",
                        'id': member_id}

        instance = self.plugin.return_value
        instance.get_member.return_value = return_value

        res = self.api.get(_get_path('lb/members', id=member_id))

        instance.get_member.assert_called_with(mock.ANY, member_id,
                                               fields=mock.ANY)
        self.assertEqual(res.status_int, exc.HTTPOk.code)
        self.assertTrue('member' in res.json)
        self.assertEqual(res.json['member'], return_value)

    def test_member_delete(self):
        self._test_entity_delete('member')

    def test_health_monitor_create(self):
        health_monitor_id = _uuid()
        data = {'health_monitor': {'type': 'HTTP',
                                   'delay': 2,
                                   'timeout': 1,
                                   'max_retries': 3,
                                   'http_method': 'GET',
                                   'url_path': '/path',
                                   'expected_codes': '200-300',
                                   'admin_state_up': True,
                                   'tenant_id': _uuid()}}
        return_value = copy.copy(data['health_monitor'])
        return_value.update({'status': "ACTIVE", 'id': health_monitor_id})

        instance = self.plugin.return_value
        instance.create_health_monitor.return_value = return_value
        res = self.api.post_json(_get_path('lb/health_monitors'), data)
        instance.create_health_monitor.assert_called_with(mock.ANY,
                                                          health_monitor=data)
        self.assertEqual(res.status_int, exc.HTTPCreated.code)
        self.assertTrue('health_monitor' in res.json)
        self.assertEqual(res.json['health_monitor'], return_value)

    def test_health_monitor_list(self):
        health_monitor_id = _uuid()
        return_value = [{'type': 'HTTP',
                         'admin_state_up': True,
                         'tenant_id': _uuid(),
                         'id': health_monitor_id}]

        instance = self.plugin.return_value
        instance.get_health_monitors.return_value = return_value

        res = self.api.get(_get_path('lb/health_monitors'))

        instance.get_health_monitors.assert_called_with(
            mock.ANY, fields=mock.ANY, filters=mock.ANY)
        self.assertEqual(res.status_int, exc.HTTPOk.code)

    def test_health_monitor_update(self):
        health_monitor_id = _uuid()
        update_data = {'health_monitor': {'admin_state_up': False}}
        return_value = {'type': 'HTTP',
                        'admin_state_up': False,
                        'tenant_id': _uuid(),
                        'status': "ACTIVE",
                        'id': health_monitor_id}

        instance = self.plugin.return_value
        instance.update_health_monitor.return_value = return_value

        res = self.api.put_json(_get_path('lb/health_monitors',
                                          id=health_monitor_id),
                                update_data)

        instance.update_health_monitor.assert_called_with(
            mock.ANY, health_monitor_id, health_monitor=update_data)
        self.assertEqual(res.status_int, exc.HTTPOk.code)
        self.assertTrue('health_monitor' in res.json)
        self.assertEqual(res.json['health_monitor'], return_value)

    def test_health_monitor_get(self):
        health_monitor_id = _uuid()
        return_value = {'type': 'HTTP',
                        'admin_state_up': False,
                        'tenant_id': _uuid(),
                        'status': "ACTIVE",
                        'id': health_monitor_id}

        instance = self.plugin.return_value
        instance.get_health_monitor.return_value = return_value

        res = self.api.get(_get_path('lb/health_monitors',
                                     id=health_monitor_id))

        instance.get_health_monitor.assert_called_with(
            mock.ANY, health_monitor_id, fields=mock.ANY)
        self.assertEqual(res.status_int, exc.HTTPOk.code)
        self.assertTrue('health_monitor' in res.json)
        self.assertEqual(res.json['health_monitor'], return_value)

    def test_health_monitor_delete(self):
        self._test_entity_delete('health_monitor')

    def test_create_pool_health_monitor(self):
        health_monitor_id = _uuid()
        data = {'health_monitor': {'id': health_monitor_id,
                                   'tenant_id': _uuid()}}

        return_value = copy.copy(data['health_monitor'])
        instance = self.plugin.return_value
        instance.create_pool_health_monitor.return_value = return_value
        res = self.api.post_json('/lb/pools/id1/health_monitors', data)
        instance.create_pool_health_monitor.assert_called_with(
            mock.ANY, pool_id='id1', health_monitor=data)
        self.assertEqual(res.status_int, exc.HTTPCreated.code)
        self.assertTrue('health_monitor' in res.json)
        self.assertEqual(res.json['health_monitor'], return_value)

    def test_delete_pool_health_monitor(self):
        health_monitor_id = _uuid()

        res = self.api.delete('/lb/pools/id1/health_monitors/%s' %
                              health_monitor_id)

        instance = self.plugin.return_value
        instance.delete_pool_health_monitor.assert_called_with(
            mock.ANY, health_monitor_id, pool_id='id1')
        self.assertEqual(res.status_int, exc.HTTPNoContent.code)