# Copyright 2014 IBM 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.

import time
from unittest import mock

from oslo_utils.fixture import uuidsentinel as uuids

from tempest.common import waiters
from tempest import exceptions
from tempest.lib import exceptions as lib_exc
from tempest.lib.services.compute import servers_client
from tempest.lib.services.network import ports_client
from tempest.lib.services.volume.v2 import volumes_client
from tempest.tests import base
import tempest.tests.utils as utils


class TestServerWaiters(base.TestCase):
    def setUp(self):
        super(TestServerWaiters, self).setUp()
        self.client = mock.MagicMock()
        self.client.build_timeout = 1
        self.client.build_interval = 1

    def test_wait_for_server_status(self):
        fake_server = {'id': 'fake-uuid',
                       'status': 'ACTIVE'}
        self.client.show_server.return_value = ({'server': fake_server})
        start_time = int(time.time())
        waiters.wait_for_server_status(
            self.client, fake_server['id'], 'ACTIVE')
        end_time = int(time.time())
        # Ensure waiter returns before build_timeout
        self.assertLess((end_time - start_time), 10)

    def test_wait_for_server_status_build(self):
        fake_server = {'id': 'fake-uuid',
                       'status': 'BUILD'}
        self.client.show_server.return_value = ({'server': fake_server})
        start_time = int(time.time())
        waiters.wait_for_server_status(self.client, fake_server['id'], 'BUILD')
        end_time = int(time.time())
        # Ensure waiter returns before build_timeout
        self.assertLess((end_time - start_time), 10)

    def test_wait_for_server_status_timeout(self):
        time_mock = self.patch('time.time')
        time_mock.side_effect = utils.generate_timeout_series(1)

        fake_server = {'id': 'fake-uuid',
                       'status': 'SAVING'}
        self.client.show_server.return_value = ({'server': fake_server})
        self.assertRaises(lib_exc.TimeoutException,
                          waiters.wait_for_server_status,
                          self.client, fake_server['id'], 'ACTIVE')

    def test_wait_for_server_status_error_on_server_build(self):
        fake_server = {'id': 'fake-uuid',
                       'status': 'ERROR'}
        self.client.show_server.return_value = ({'server': fake_server})
        self.assertRaises(exceptions.BuildErrorException,
                          waiters.wait_for_server_status,
                          self.client, fake_server['id'], 'ACTIVE')

    def test_wait_for_server_termination(self):
        fake_server = {'id': 'fake-uuid',
                       'status': 'ACTIVE'}
        self.client.show_server.side_effect = lib_exc.NotFound
        waiters.wait_for_server_termination(self.client, fake_server['id'])

    def test_wait_for_server_termination_timeout(self):
        time_mock = self.patch('time.time')
        time_mock.side_effect = utils.generate_timeout_series(1)

        fake_server = {'id': 'fake-uuid',
                       'status': 'ACTIVE'}
        self.assertRaises(lib_exc.TimeoutException,
                          waiters.wait_for_server_termination,
                          self.client, fake_server['id'])

    def test_wait_for_server_termination_error_status(self):
        fake_server = {'id': 'fake-uuid',
                       'status': 'ERROR'}
        self.client.show_server.return_value = ({'server': fake_server})
        self.assertRaises(lib_exc.DeleteErrorException,
                          waiters.wait_for_server_termination,
                          self.client, fake_server['id'])


class TestImageWaiters(base.TestCase):
    def setUp(self):
        super(TestImageWaiters, self).setUp()
        self.client = mock.MagicMock()
        self.client.build_timeout = 1
        self.client.build_interval = 1

    def test_wait_for_image_status(self):
        self.client.show_image.return_value = ({'status': 'active'})
        start_time = int(time.time())
        waiters.wait_for_image_status(self.client, 'fake_image_id', 'active')
        end_time = int(time.time())
        # Ensure waiter returns before build_timeout
        self.assertLess((end_time - start_time), 10)

    def test_wait_for_image_status_timeout(self):
        time_mock = self.patch('time.time')
        time_mock.side_effect = utils.generate_timeout_series(1)

        self.client.show_image.return_value = ({'status': 'saving'})
        self.assertRaises(lib_exc.TimeoutException,
                          waiters.wait_for_image_status,
                          self.client, 'fake_image_id', 'active')

    def test_wait_for_image_status_error_on_image_create(self):
        self.client.show_image.return_value = ({'status': 'ERROR'})
        self.assertRaises(exceptions.AddImageException,
                          waiters.wait_for_image_status,
                          self.client, 'fake_image_id', 'active')

    def test_wait_for_image_imported_to_stores(self):
        self.client.show_image.return_value = ({'status': 'active',
                                                'stores': 'fake_store'})
        self.client.info_stores.return_value = {
            'stores': [{'id': 'fake_store',
                        'description': 'A writable store'},
                       {'id': 'another_fake_store',
                        'description': 'A read-only store',
                        'read-only': 'true'}]
        }
        start_time = int(time.time())
        waiters.wait_for_image_imported_to_stores(
            self.client, 'fake_image_id', 'fake_store,another_fake_store')
        end_time = int(time.time())
        # Ensure waiter returns before build_timeout, and did not wait
        # for the read-only store
        self.assertLess((end_time - start_time), 10)

    def test_wait_for_image_imported_to_stores_failure(self):
        time_mock = self.patch('time.time')
        client = mock.MagicMock()
        client.build_timeout = 2
        self.patch('time.time', side_effect=[0., 1., 2.])
        time_mock.side_effect = utils.generate_timeout_series(1)

        client.show_image.return_value = ({
            'status': 'saving',
            'stores': 'fake_store',
            'os_glance_failed_import': 'fake_os_glance_failed_import'})
        self.assertRaises(lib_exc.OtherRestClientException,
                          waiters.wait_for_image_imported_to_stores,
                          client, 'fake_image_id', 'fake_store')

    def test_wait_for_image_imported_to_stores_timeout(self):
        time_mock = self.patch('time.time')
        client = mock.MagicMock()
        client.build_timeout = 2
        self.patch('time.time', side_effect=[0., 1., 2.])
        time_mock.side_effect = utils.generate_timeout_series(1)

        client.show_image.return_value = ({
            'status': 'saving',
            'stores': 'fake_store'})
        self.assertRaises(lib_exc.TimeoutException,
                          waiters.wait_for_image_imported_to_stores,
                          client, 'fake_image_id', 'fake_store')

    def test_wait_for_image_imported_to_stores_no_stores(self):
        client = mock.MagicMock()
        client.show_image.return_value = ({'status': 'active'})
        client.info_stores.side_effect = lib_exc.NotFound
        client.build_timeout = 2
        start_time = time.time()
        waiters.wait_for_image_imported_to_stores(
            client, 'fake_image_id', None)
        end_time = time.time()
        self.assertLess(end_time - start_time, 10)

        exc = self.assertRaises(lib_exc.TimeoutException,
                                waiters.wait_for_image_imported_to_stores,
                                client, 'fake_image_id', 'foo,bar')
        self.assertIn('cowardly', str(exc))

    def test_wait_for_image_copied_to_stores(self):
        self.client.show_image.return_value = ({
            'status': 'active',
            'os_glance_importing_to_stores': '',
            'os_glance_failed_import': 'fake_os_glance_failed_import'})
        start_time = int(time.time())
        waiters.wait_for_image_copied_to_stores(
            self.client, 'fake_image_id')
        end_time = int(time.time())
        # Ensure waiter returns before build_timeout
        self.assertLess((end_time - start_time), 10)

    def test_wait_for_image_copied_to_stores_timeout(self):
        time_mock = self.patch('time.time')
        self.patch('time.time', side_effect=[0., 1.])
        time_mock.side_effect = utils.generate_timeout_series(1)

        self.client.show_image.return_value = ({
            'status': 'active',
            'os_glance_importing_to_stores': 'processing',
            'os_glance_failed_import': 'fake_os_glance_failed_import'})
        self.assertRaises(lib_exc.TimeoutException,
                          waiters.wait_for_image_copied_to_stores,
                          self.client, 'fake_image_id')

    def test_wait_for_image_copied_to_stores_status_killed(self):
        self.client.show_image.return_value = ({
            'status': 'killed',
            'os_glance_importing_to_stores': None,
            'os_glance_failed_import': 'fake_os_glance_failed_import'})
        self.assertRaises(exceptions.ImageKilledException,
                          waiters.wait_for_image_copied_to_stores,
                          self.client, 'fake_image_id')

    def test_wait_for_image_tasks_status(self):
        self.client.show_image_tasks.return_value = ({
            'tasks': [{'status': 'success'}]})
        start_time = int(time.time())
        waiters.wait_for_image_tasks_status(
            self.client, 'fake_image_id', 'success')
        end_time = int(time.time())
        # Ensure waiter returns before build_timeout
        self.assertLess((end_time - start_time), 10)

    def test_wait_for_image_tasks_status_timeout(self):
        time_mock = self.patch('time.time')
        self.patch('time.time', side_effect=[0., 1.])
        time_mock.side_effect = utils.generate_timeout_series(1)

        self.client.show_image_tasks.return_value = ({
            'tasks': [
                {'status': 'success'},
                {'status': 'processing'}]})
        self.assertRaises(lib_exc.TimeoutException,
                          waiters.wait_for_image_tasks_status,
                          self.client, 'fake_image_id', 'success')

    def test_wait_for_tasks_status(self):
        self.client.show_tasks.return_value = ({
            'status': 'success'})
        start_time = int(time.time())
        waiters.wait_for_tasks_status(
            self.client, 'fake_task_id', 'success')
        end_time = int(time.time())
        # Ensure waiter returns before build_timeout
        self.assertLess((end_time - start_time), 10)

    def test_wait_for_tasks_status_timeout(self):
        time_mock = self.patch('time.time')
        self.patch('time.time', side_effect=[0., 1.])
        time_mock.side_effect = utils.generate_timeout_series(1)

        self.client.show_tasks.return_value = (
            {'status': 'success'},
            {'status': 'processing'})
        self.assertRaises(lib_exc.TimeoutException,
                          waiters.wait_for_tasks_status,
                          self.client, 'fake_task_id', 'success')


class TestInterfaceWaiters(base.TestCase):

    build_timeout = 1.
    build_interval = 1
    port_down = {'interfaceAttachment': {'port_state': 'DOWN'}}
    port_active = {'interfaceAttachment': {'port_state': 'ACTIVE'}}

    def mock_client(self, **kwargs):
        return mock.MagicMock(
            build_timeout=self.build_timeout,
            build_interval=self.build_interval,
            **kwargs)

    def test_wait_for_interface_status(self):
        show_interface = mock.Mock(
            side_effect=[self.port_down, self.port_active])
        client = self.mock_client(show_interface=show_interface)
        self.patch('time.time', return_value=0.)
        sleep = self.patch('time.sleep')

        result = waiters.wait_for_interface_status(
            client, 'server_id', 'port_id', 'ACTIVE')

        self.assertIs(self.port_active['interfaceAttachment'], result)
        show_interface.assert_has_calls([mock.call('server_id', 'port_id'),
                                         mock.call('server_id', 'port_id')])
        sleep.assert_called_once_with(client.build_interval)

    def test_wait_for_interface_status_timeout(self):
        show_interface = mock.MagicMock(return_value=self.port_down)
        client = self.mock_client(show_interface=show_interface)
        self.patch('time.time', side_effect=[0., client.build_timeout + 1.])
        sleep = self.patch('time.sleep')

        self.assertRaises(lib_exc.TimeoutException,
                          waiters.wait_for_interface_status,
                          client, 'server_id', 'port_id', 'ACTIVE')

        show_interface.assert_has_calls([mock.call('server_id', 'port_id'),
                                         mock.call('server_id', 'port_id')])
        sleep.assert_called_once_with(client.build_interval)

    def test_wait_for_interface_detach(self):
        no_event = {
            'instanceAction': {
                'events': []
            }
        }
        one_event_without_result = {
            'instanceAction': {
                'events': [
                    {
                        'event': 'compute_detach_interface',
                        'result': None
                    }

                ]
            }
        }
        one_event_successful = {
            'instanceAction': {
                'events': [
                    {
                        'event': 'compute_detach_interface',
                        'result': 'Success'
                    }
                ]
            }
        }

        show_instance_action = mock.MagicMock(
            # there is an extra call to return the result from the waiter
            side_effect=[
                no_event,
                one_event_without_result,
                one_event_successful,
                one_event_successful,
            ]
        )
        client = self.mock_client(show_instance_action=show_instance_action)
        self.patch('time.time', return_value=0.)
        sleep = self.patch('time.sleep')

        result = waiters.wait_for_interface_detach(
            client, mock.sentinel.server_id, mock.sentinel.port_id,
            mock.sentinel.detach_request_id
        )

        self.assertIs(one_event_successful['instanceAction'], result)
        show_instance_action.assert_has_calls(
            # there is an extra call to return the result from the waiter
            [
                mock.call(
                    mock.sentinel.server_id, mock.sentinel.detach_request_id)
            ] * 4
        )
        sleep.assert_has_calls([mock.call(client.build_interval)] * 2)

    def test_wait_for_interface_detach_timeout(self):
        one_event_without_result = {
            'instanceAction': {
                'events': [
                    {
                        'event': 'compute_detach_interface',
                        'result': None
                    }

                ]
            }
        }

        show_instance_action = mock.MagicMock(
            return_value=one_event_without_result)
        client = self.mock_client(show_instance_action=show_instance_action)
        self.patch('time.time', side_effect=[0., client.build_timeout + 1.])
        sleep = self.patch('time.sleep')

        self.assertRaises(
            lib_exc.TimeoutException,
            waiters.wait_for_interface_detach,
            client, mock.sentinel.server_id, mock.sentinel.port_id,
            mock.sentinel.detach_request_id
        )

        show_instance_action.assert_has_calls(
            [
                mock.call(
                    mock.sentinel.server_id, mock.sentinel.detach_request_id)
            ] * 2
        )
        sleep.assert_called_once_with(client.build_interval)


class TestVolumeWaiters(base.TestCase):
    vol_migrating_src_host = {
        'volume': {'migration_status': 'migrating',
                   'os-vol-host-attr:host': 'src_host@backend#type'}}
    vol_migrating_dst_host = {
        'volume': {'migration_status': 'migrating',
                   'os-vol-host-attr:host': 'dst_host@backend#type'}}
    vol_migration_success = {
        'volume': {'migration_status': 'success',
                   'os-vol-host-attr:host': 'dst_host@backend#type'}}
    vol_migration_error = {
        'volume': {'migration_status': 'error',
                   'os-vol-host-attr:host': 'src_host@backend#type'}}

    def test_wait_for_volume_migration_timeout(self):
        show_volume = mock.MagicMock(return_value=self.vol_migrating_src_host)
        client = mock.Mock(spec=volumes_client.VolumesClient,
                           resource_type="volume",
                           build_interval=1,
                           build_timeout=1,
                           show_volume=show_volume)
        self.patch('time.time', side_effect=[0., client.build_timeout + 1.])
        self.patch('time.sleep')
        self.assertRaises(lib_exc.TimeoutException,
                          waiters.wait_for_volume_migration,
                          client, mock.sentinel.volume_id, 'dst_host')

    def test_wait_for_volume_migration_error(self):
        show_volume = mock.MagicMock(side_effect=[
            self.vol_migrating_src_host,
            self.vol_migrating_src_host,
            self.vol_migration_error])
        client = mock.Mock(spec=volumes_client.VolumesClient,
                           resource_type="volume",
                           build_interval=1,
                           build_timeout=1,
                           show_volume=show_volume)
        self.patch('time.time', return_value=0.)
        self.patch('time.sleep')
        self.assertRaises(lib_exc.TempestException,
                          waiters.wait_for_volume_migration,
                          client, mock.sentinel.volume_id, 'dst_host')

    def test_wait_for_volume_migration_success_and_dst(self):
        show_volume = mock.MagicMock(side_effect=[
            self.vol_migrating_src_host,
            self.vol_migrating_dst_host,
            self.vol_migration_success])
        client = mock.Mock(spec=volumes_client.VolumesClient,
                           resource_type="volume",
                           build_interval=1,
                           build_timeout=1,
                           show_volume=show_volume)
        self.patch('time.time', return_value=0.)
        self.patch('time.sleep')
        waiters.wait_for_volume_migration(
            client, mock.sentinel.volume_id, 'dst_host')

        # Assert that we wait until migration_status is success and dst_host is
        # part of the returned os-vol-host-attr:host.
        show_volume.assert_has_calls([mock.call(mock.sentinel.volume_id),
                                      mock.call(mock.sentinel.volume_id),
                                      mock.call(mock.sentinel.volume_id)])

    def test_wait_for_volume_retype(self):
        fake_volume = {'volume_type': {'id': 'fake-uuid'}}
        show_volume = mock.Mock(return_value={'volume': fake_volume})
        client = mock.Mock(resource_type="volume",
                           build_interval=1,
                           build_timeout=1,
                           show_volume=show_volume)
        waiters.wait_for_volume_retype(
            client, mock.sentinel.volume_id, fake_volume['volume_type'])

    def test_wait_for_volume_retype_timeout(self):
        fake_volume = {'volume_type': {'id': 'fake-uuid'}}
        show_volume = mock.Mock(return_value={'volume': fake_volume})
        client = mock.Mock(resource_type="volume",
                           build_interval=1,
                           build_timeout=1,
                           show_volume=show_volume)

        self.patch('time.time', side_effect=[0., client.build_timeout + 1.])
        self.patch('time.sleep')
        self.assertRaises(lib_exc.TimeoutException,
                          waiters.wait_for_volume_retype,
                          client, mock.sentinel.volume_id,
                          'fake_volume_type')

    @mock.patch.object(time, 'sleep')
    def test_wait_for_volume_status_error_restoring(self, mock_sleep):
        # Tests that the wait method raises VolumeRestoreErrorException if
        # the volume status is 'error_restoring'.
        client = mock.Mock(spec=volumes_client.VolumesClient,
                           resource_type="volume",
                           build_interval=1)
        volume1 = {'volume': {'status': 'restoring-backup'}}
        volume2 = {'volume': {'status': 'error_restoring'}}
        mock_show = mock.Mock(side_effect=(volume1, volume2))
        client.show_volume = mock_show
        volume_id = '7532b91e-aa0a-4e06-b3e5-20c0c5ee1caa'
        self.assertRaises(exceptions.VolumeRestoreErrorException,
                          waiters.wait_for_volume_resource_status,
                          client, volume_id, 'available')
        mock_show.assert_has_calls([mock.call(volume_id),
                                    mock.call(volume_id)])
        mock_sleep.assert_called_once_with(1)

    @mock.patch.object(time, 'sleep')
    def test_wait_for_volume_status_timeout_console(self, mock_sleep):
        # Tests that the wait method gets the server console log if the
        # timeout is hit.
        client = mock.Mock(spec=volumes_client.VolumesClient,
                           resource_type="volume",
                           build_interval=1,
                           build_timeout=1)
        servers_client = mock.Mock()
        servers_client.get_console_output.return_value = {
            'output': 'console log'}
        volume = {'volume': {'status': 'detaching'}}
        mock_show = mock.Mock(return_value=volume)
        client.show_volume = mock_show
        volume_id = '7532b91e-aa0a-4e06-b3e5-20c0c5ee1caa'
        self.assertRaises(lib_exc.TimeoutException,
                          waiters.wait_for_volume_resource_status,
                          client, volume_id, 'available',
                          server_id='someserver',
                          servers_client=servers_client)
        servers_client.get_console_output.assert_called_once_with(
            'someserver')

    @mock.patch.object(time, 'sleep')
    def test_wait_for_volume_status_error_extending(self, mock_sleep):
        # Tests that the wait method raises VolumeExtendErrorException if
        # the volume status is 'error_extending'.
        client = mock.Mock(spec=volumes_client.VolumesClient,
                           resource_type="volume",
                           build_interval=1)
        volume1 = {'volume': {'status': 'extending'}}
        volume2 = {'volume': {'status': 'error_extending'}}
        mock_show = mock.Mock(side_effect=(volume1, volume2))
        client.show_volume = mock_show
        volume_id = '7532b91e-aa0a-4e06-b3e5-20c0c5ee1caa'
        self.assertRaises(exceptions.VolumeExtendErrorException,
                          waiters.wait_for_volume_resource_status,
                          client, volume_id, 'available')
        mock_show.assert_has_calls([mock.call(volume_id),
                                    mock.call(volume_id)])
        mock_sleep.assert_called_once_with(1)

    def test_wait_for_volume_attachment_create(self):
        vol_detached = {'volume': {'attachments': []}}
        vol_attached = {'volume': {'attachments': [
                       {'id': uuids.volume_id,
                        'attachment_id': uuids.attachment_id,
                        'server_id': uuids.server_id,
                        'volume_id': uuids.volume_id}]}}
        show_volume = mock.MagicMock(side_effect=[
            vol_detached, vol_detached, vol_attached])
        client = mock.Mock(spec=volumes_client.VolumesClient,
                           build_interval=1,
                           build_timeout=5,
                           show_volume=show_volume)
        self.patch('time.time')
        self.patch('time.sleep')
        att = waiters.wait_for_volume_attachment_create(
            client, uuids.volume_id, uuids.server_id)
        assert att == vol_attached['volume']['attachments'][0]
        # Assert that show volume is called until the attachment is removed.
        show_volume.assert_has_calls([mock.call(uuids.volume_id),
                                      mock.call(uuids.volume_id),
                                      mock.call(uuids.volume_id)])

    def test_wait_for_volume_attachment_create_timeout(self):
        show_volume = mock.MagicMock(return_value={
            'volume': {'attachments': [
                {'attachment_id': uuids.attachment_id,
                 'server_id': uuids.server_id,
                 'volume_id': uuids.volume_id}]}})
        client = mock.Mock(spec=volumes_client.VolumesClient,
                           build_interval=1,
                           build_timeout=1,
                           show_volume=show_volume)
        self.patch('time.time', side_effect=[0., client.build_timeout + 1.])
        self.patch('time.sleep')
        # Assert that a timeout is raised if the attachment is not
        # created within required time
        self.assertRaises(lib_exc.TimeoutException,
                          waiters.wait_for_volume_attachment_create,
                          client, 'fake_volume_id', 'fake_server_id')

    def test_wait_for_volume_attachment_remove(self):
        vol_detached = {'volume': {'attachments': []}}
        vol_attached = {'volume': {'attachments': [
                       {'attachment_id': uuids.attachment_id}]}}
        show_volume = mock.MagicMock(side_effect=[
            vol_attached, vol_attached, vol_detached])
        client = mock.Mock(spec=volumes_client.VolumesClient,
                           build_interval=1,
                           build_timeout=5,
                           show_volume=show_volume)
        self.patch('time.time')
        self.patch('time.sleep')
        waiters.wait_for_volume_attachment_remove(client, uuids.volume_id,
                                                  uuids.attachment_id)
        # Assert that show volume is called until the attachment is removed.
        show_volume.assert_has_calls([mock.call(uuids.volume_id),
                                      mock.call(uuids.volume_id),
                                      mock.call(uuids.volume_id)])

    def test_wait_for_volume_attachment_remove_timeout(self):
        show_volume = mock.MagicMock(return_value={
            'volume': {'attachments': [
                {'attachment_id': uuids.attachment_id}]}})
        client = mock.Mock(spec=volumes_client.VolumesClient,
                           build_interval=1,
                           build_timeout=1,
                           show_volume=show_volume)
        self.patch('time.time', side_effect=[0., client.build_timeout + 1.])
        self.patch('time.sleep')
        # Assert that a timeout is raised if the attachment remains.
        self.assertRaises(lib_exc.TimeoutException,
                          waiters.wait_for_volume_attachment_remove,
                          client, uuids.volume_id, uuids.attachment_id)

    def test_wait_for_volume_attachment_not_present(self):
        show_volume = mock.MagicMock(return_value={
            'volume': {'attachments': []}})
        client = mock.Mock(spec=volumes_client.VolumesClient,
                           build_interval=1,
                           build_timeout=1,
                           show_volume=show_volume)
        self.patch('time.time', side_effect=[0., client.build_timeout + 1.])
        self.patch('time.sleep')
        waiters.wait_for_volume_attachment_remove(client, uuids.volume_id,
                                                  uuids.attachment_id)
        # Assert that show volume is only called once before we return
        show_volume.assert_called_once_with(uuids.volume_id)

    def test_wait_for_volume_attachment_remove_from_server(self):
        volume_attached = {
            "volumeAttachments": [{"volumeId": uuids.volume_id}]}
        volume_not_attached = {"volumeAttachments": []}
        mock_list_volume_attachments = mock.Mock(
            side_effect=[volume_attached, volume_not_attached])
        mock_client = mock.Mock(
            spec=servers_client.ServersClient,
            build_interval=1,
            build_timeout=1,
            list_volume_attachments=mock_list_volume_attachments)
        self.patch(
            'time.time',
            side_effect=[0., 0.5, mock_client.build_timeout + 1.])
        self.patch('time.sleep')

        waiters.wait_for_volume_attachment_remove_from_server(
            mock_client, uuids.server_id, uuids.volume_id)

        # Assert that list_volume_attachments is called until the attachment is
        # removed.
        mock_list_volume_attachments.assert_has_calls([
            mock.call(uuids.server_id),
            mock.call(uuids.server_id)])

    def test_wait_for_volume_attachment_remove_from_server_timeout(self):
        volume_attached = {
            "volumeAttachments": [{"volumeId": uuids.volume_id}]}
        mock_list_volume_attachments = mock.Mock(
            side_effect=[volume_attached, volume_attached])
        mock_get_console_output = mock.Mock(
            return_value={'output': 'output'})
        mock_client = mock.Mock(
            spec=servers_client.ServersClient,
            build_interval=1,
            build_timeout=1,
            list_volume_attachments=mock_list_volume_attachments,
            get_console_output=mock_get_console_output)
        self.patch(
            'time.time',
            side_effect=[0., 0.5, mock_client.build_timeout + 1.])
        self.patch('time.sleep')

        self.assertRaises(
            lib_exc.TimeoutException,
            waiters.wait_for_volume_attachment_remove_from_server,
            mock_client, uuids.server_id, uuids.volume_id)

        # Assert that list_volume_attachments is called until the attachment is
        # removed.
        mock_list_volume_attachments.assert_has_calls([
            mock.call(uuids.server_id),
            mock.call(uuids.server_id)])

        # Assert that we fetch console output
        mock_get_console_output.assert_called_once_with(uuids.server_id)

    def test_wait_for_volume_attachment_remove_from_server_not_found(self):
        mock_list_volume_attachments = mock.Mock(
            side_effect=lib_exc.NotFound)
        mock_client = mock.Mock(
            spec=servers_client.ServersClient,
            list_volume_attachments=mock_list_volume_attachments)

        # Assert that nothing is raised when lib_exc_NotFound is raised
        # by the client call to list_volume_attachments
        waiters.wait_for_volume_attachment_remove_from_server(
            mock_client, mock.sentinel.server_id, mock.sentinel.volume_id)

        # Assert that list_volume_attachments was actually called
        mock_list_volume_attachments.assert_called_once_with(
            mock.sentinel.server_id)

    @mock.patch('os.system')
    def test_wait_for_ping_host_alive(self, mock_ping):
        mock_ping.return_value = 0
        # Assert that nothing is raised as the host is alive
        waiters.wait_for_ping('127.0.0.1', 10, 1)

    @mock.patch('os.system')
    def test_wait_for_ping_host_eventually_alive(self, mock_ping):
        mock_ping.side_effect = [1, 1, 0]
        # Assert that nothing is raised when the host is eventually alive
        waiters.wait_for_ping('127.0.0.1', 10, 1)

    @mock.patch('os.system')
    def test_wait_for_ping_timeout(self, mock_ping):
        mock_ping.return_value = 1
        # Assert that TimeoutException is raised when the host is dead
        self.assertRaises(
            lib_exc.TimeoutException,
            waiters.wait_for_ping,
            '127.0.0.1',
            .1,
            .1
        )

    def test_wait_for_ssh(self):
        mock_ssh_client = mock.Mock()
        mock_ssh_client.validate_authentication.return_value = True
        # Assert that nothing is raised when validate_authentication returns
        waiters.wait_for_ssh(mock_ssh_client, .1)
        mock_ssh_client.validate_authentication.assert_called_once()

    def test_wait_for_ssh_eventually_up(self):
        mock_ssh_client = mock.Mock()
        timeout = lib_exc.SSHTimeout(
            host='foo',
            username='bar',
            password='fizz'
        )
        mock_ssh_client.validate_authentication.side_effect = [
            timeout,
            timeout,
            True
        ]
        # Assert that nothing is raised if validate_authentication passes
        # before the timeout
        waiters.wait_for_ssh(mock_ssh_client, 10)

    def test_wait_for_ssh_timeout(self):
        mock_ssh_client = mock.Mock()
        timeout = lib_exc.SSHTimeout(
            host='foo',
            username='bar',
            password='fizz'
        )
        mock_ssh_client.validate_authentication.side_effect = timeout
        # Assert that TimeoutException is raised when validate_authentication
        # doesn't pass in time.
        self.assertRaises(
            lib_exc.TimeoutException,
            waiters.wait_for_ssh,
            mock_ssh_client,
            .1
        )

    def test_wait_for_caching(self):
        mock_client = mock.Mock(
            build_interval=1,
            build_timeout=1
        )
        mock_cache_client = mock.Mock()
        mock_cache_client.list_cache.return_value = {
            "cached_images": [{
                "image_id": 'fake_image_id'}]}
        waiters.wait_for_caching(
            mock_client, mock_cache_client, 'fake_image_id')

    def test_wait_for_caching_timeout(self):
        time_mock = self.patch('time.time')
        time_mock.side_effect = utils.generate_timeout_series(1)

        mock_client = mock.Mock(
            build_interval=1,
            build_timeout=1
        )
        mock_cache_client = mock.Mock()
        mock_cache_client.list_cache.return_value = {
            "cached_images": [{
                "image_id": 'fake_image_id'}]}
        # Assert that TimeoutException is raised when the image
        # failed to cache in time
        self.assertRaises(
            lib_exc.TimeoutException,
            waiters.wait_for_caching,
            mock_client,
            mock_cache_client,
            'fake_image_id'
        )

    def test_wait_for_object_create(self):
        mock_object_client = mock.Mock(
            build_interval=1,
            build_timeout=1
        )
        waiters.wait_for_object_create(
            mock_object_client, 'fake_container', 'fake_object')

    def test_wait_for_object_create_timeout(self):
        time_mock = self.patch('time.time')
        time_mock.side_effect = utils.generate_timeout_series(1)

        mock_object_client = mock.Mock(
            build_interval=1,
            build_timeout=1
        )
        # Assert that TimeoutException is raised when the object is not
        # created in time
        self.assertRaises(
            lib_exc.TimeoutException,
            waiters.wait_for_object_create,
            mock_object_client,
            'fake_container',
            'fake_object',
            .1
        )


class TestPortCreationWaiter(base.TestCase):
    def test_wait_for_port_status(self):
        """Test that the waiter replies with the port before the timeout"""

        def client_response(self):
            """Mock client response, replies with the final status after
            2 calls
            """
            if mock_client.call_count >= 2:
                return mock_port
            else:
                mock_client.call_count += 1
                return mock_port_build

        mock_port = {'port': {'id': '1234', 'status': "DOWN"}}
        mock_port_build = {'port': {'id': '1234', 'status': "BUILD"}}
        mock_client = mock.Mock(
            spec=ports_client.PortsClient,
            build_timeout=30, build_interval=1,
            show_port=client_response)
        fake_port_id = "1234"
        fake_status = "DOWN"
        self.assertEqual(mock_port, waiters.wait_for_port_status(
            mock_client, fake_port_id, fake_status))

    def test_wait_for_port_status_timeout(self):
        """Negative test - checking that a timeout
        presented by a small 'fake_timeout' and a static status of
        'BUILD' in the mock will raise a timeout exception
        """
        mock_port = {'port': {'id': '1234', 'status': "BUILD"}}
        mock_client = mock.Mock(
            spec=ports_client.PortsClient,
            build_timeout=2, build_interval=1,
            show_port=lambda id: mock_port)
        fake_port_id = "1234"
        fake_status = "ACTIVE"
        self.assertRaises(lib_exc.TimeoutException,
                          waiters.wait_for_port_status, mock_client,
                          fake_port_id, fake_status)


class TestServerFloatingIPWaiters(base.TestCase):

    def test_wait_for_server_floating_ip_associate_timeout(self):
        mock_server = {'server': {'id': 'fake_uuid', 'addresses': {}}}
        mock_client = mock.Mock(
            spec=servers_client.ServersClient,
            build_timeout=1, build_interval=1,
            show_server=lambda id: mock_server)

        fake_server = {'id': 'fake-uuid'}
        fake_fip = {'floating_ip_address': 'fake_address'}
        self.assertRaises(
            lib_exc.TimeoutException,
            waiters.wait_for_server_floating_ip, mock_client, fake_server,
            fake_fip)

    def test_wait_for_server_floating_ip_disassociate_timeout(self):
        mock_addresses = {'shared': [{'OS-EXT-IPS:type': 'floating',
                                      'addr': 'fake_address'}]}
        mock_server = {'server': {'id': 'fake_uuid',
                                  'addresses': mock_addresses}}
        mock_client = mock.Mock(
            spec=servers_client.ServersClient,
            build_timeout=1, build_interval=1,
            show_server=lambda id: mock_server)

        fake_server = {'id': 'fake-uuid'}
        fake_fip = {'floating_ip_address': 'fake_address'}
        self.assertRaises(
            lib_exc.TimeoutException,
            waiters.wait_for_server_floating_ip, mock_client, fake_server,
            fake_fip, wait_for_disassociate=True)