# Copyright (c) 2016-2017 Intel Corporation
#
# 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 os

import mock
import unittest

from yardstick import ssh
from yardstick.benchmark.contexts import base
from yardstick.benchmark.contexts.standalone import model
from yardstick.benchmark.contexts.standalone import sriov


class SriovContextTestCase(unittest.TestCase):

    NODES_SAMPLE = "nodes_sample.yaml"
    NODES_SRIOV_SAMPLE = "nodes_sriov_sample.yaml"
    NODES_DUPLICATE_SAMPLE = "nodes_duplicate_sample.yaml"

    ATTRS = {
        'name': 'StandaloneSriov',
        'task_id': '1234567890',
        'file': 'pod',
        'flavor': {},
        'servers': {},
        'networks': {},
    }

    NETWORKS = {
        'mgmt': {'cidr': '152.16.100.10/24'},
        'private_0': {
            'phy_port': "0000:05:00.0",
            'vpci': "0000:00:07.0",
            'cidr': '152.16.100.10/24',
            'interface': 'if0',
            'mac': "00:00:00:00:00:01",
            'vf_pci': {'vf_pci': 0},
            'gateway_ip': '152.16.100.20'},
        'public_0': {
            'phy_port': "0000:05:00.1",
            'vpci': "0000:00:08.0",
            'cidr': '152.16.40.10/24',
            'interface': 'if0',
            'vf_pci': {'vf_pci': 0},
            'mac': "00:00:00:00:00:01",
            'gateway_ip': '152.16.100.20'},
    }

    def setUp(self):
        self.attrs = {
            'name': 'foo',
            'task_id': '1234567890',
            'file': self._get_file_abspath(self.NODES_SRIOV_SAMPLE),
        }
        self.sriov = sriov.SriovContext()
        self.addCleanup(self._remove_contexts)

    @staticmethod
    def _remove_contexts():
        for context in base.Context.list:
            context._delete_context()
        base.Context.list = []

    @mock.patch.object(model, 'StandaloneContextHelper')
    @mock.patch.object(model, 'Libvirt')
    @mock.patch.object(model, 'Server')
    def test___init__(self, mock_helper, mock_libvirt, mock_server):
        # pylint: disable=unused-argument
        # NOTE(ralonsoh): this test doesn't cover function execution.
        self.sriov.helper = mock_helper
        self.sriov.vnf_node = mock_server
        self.assertIsNone(self.sriov.file_path)
        self.assertTrue(self.sriov.first_run)

    def test_init(self):
        self.sriov.helper.parse_pod_file = mock.Mock(return_value=[{}, {}, {}])
        self.assertIsNone(self.sriov.init(self.ATTRS))

    @mock.patch.object(ssh, 'SSH', return_value=(0, "a", ""))
    def test_deploy(self, *args):
        # NOTE(ralonsoh): this test doesn't cover function execution.
        self.sriov.vm_deploy = False
        self.assertIsNone(self.sriov.deploy())

        self.sriov.vm_deploy = True
        self.sriov.host_mgmt = {}
        self.sriov.install_req_libs = mock.Mock()
        self.sriov.get_nic_details = mock.Mock(return_value={})
        self.sriov.setup_sriov_context = mock.Mock(return_value={})
        self.sriov.wait_for_vnfs_to_start = mock.Mock(return_value={})
        self.assertIsNone(self.sriov.deploy())

    @mock.patch.object(ssh, 'SSH', return_value=(0, "a", ""))
    @mock.patch.object(model, 'Libvirt')
    def test_undeploy(self, mock_libvirt, mock_ssh):
        # pylint: disable=unused-argument
        # NOTE(ralonsoh): the pylint exception should be removed.
        self.sriov.vm_deploy = False
        self.assertIsNone(self.sriov.undeploy())

        self.sriov.vm_deploy = True
        self.sriov.connection = mock_ssh
        self.sriov.vm_names = ['vm_0', 'vm_1']
        self.sriov.drivers = ['vm_0', 'vm_1']
        self.assertIsNone(self.sriov.undeploy())

    def _get_file_abspath(self, filename):
        curr_path = os.path.dirname(os.path.abspath(__file__))
        file_path = os.path.join(curr_path, filename)
        return file_path

    def test__get_server_with_dic_attr_name(self):

        self.sriov.init(self.attrs)

        attr_name = {'name': 'foo.bar'}
        result = self.sriov._get_server(attr_name)

        self.assertEqual(result, None)

    def test__get_server_not_found(self):

        self.sriov.helper.parse_pod_file = mock.Mock(return_value=[{}, {}, {}])
        self.sriov.init(self.attrs)

        attr_name = 'bar.foo'
        result = self.sriov._get_server(attr_name)

        self.assertEqual(result, None)

    def test__get_server_mismatch(self):

        self.sriov.init(self.attrs)

        attr_name = 'bar.foo1'
        result = self.sriov._get_server(attr_name)

        self.assertEqual(result, None)

    def test__get_server_duplicate(self):

        self.attrs['file'] = self._get_file_abspath(self.NODES_DUPLICATE_SAMPLE)

        self.sriov.init(self.attrs)

        attr_name = 'node1.foo-12345678'
        with self.assertRaises(ValueError):
            self.sriov._get_server(attr_name)

    def test__get_server_found(self):

        self.sriov.init(self.attrs)

        attr_name = 'node1.foo-12345678'
        result = self.sriov._get_server(attr_name)

        self.assertEqual(result['ip'], '10.229.47.137')
        self.assertEqual(result['name'], 'node1.foo-12345678')
        self.assertEqual(result['user'], 'root')
        self.assertEqual(result['key_filename'], '/root/.yardstick_key')

    def test__get_physical_node_for_server(self):
        attrs = self.attrs
        attrs.update({'servers': {'server1': {}}})
        self.sriov.init(attrs)

        # When server is not from this context
        result = self.sriov._get_physical_node_for_server('server1.another-context')
        self.assertIsNone(result)

        # When node_name is not from this context
        result = self.sriov._get_physical_node_for_server('fake.foo-12345678')
        self.assertIsNone(result)

        result = self.sriov._get_physical_node_for_server('server1.foo-12345678')
        self.assertEqual(result, 'node5.foo')

    def test__get_server_no_task_id(self):
        self.attrs['flags'] = {'no_setup': True}
        self.sriov.init(self.attrs)

        attr_name = 'node1.foo'
        result = self.sriov._get_server(attr_name)

        self.assertEqual(result['ip'], '10.229.47.137')
        self.assertEqual(result['name'], 'node1.foo')
        self.assertEqual(result['user'], 'root')
        self.assertEqual(result['key_filename'], '/root/.yardstick_key')

    # TODO(elfoley): Split this test
    # There are at least two sets of inputs/outputs
    def test__get_network(self):
        network1 = {
            'name': 'net_1',
            'vld_id': 'vld111',
            'segmentation_id': 'seg54',
            'network_type': 'type_a',
            'physical_network': 'phys',
        }
        network2 = {
            'name': 'net_2',
            'vld_id': 'vld999',
        }
        self.sriov.networks = {
            'a': network1,
            'b': network2,
        }

        attr_name = {}
        self.assertIsNone(self.sriov._get_network(attr_name))

        attr_name = {'vld_id': 'vld777'}
        self.assertIsNone(self.sriov._get_network(attr_name))

        self.assertIsNone(self.sriov._get_network(None))

        attr_name = 'vld777'
        self.assertIsNone(self.sriov._get_network(attr_name))

        attr_name = {'vld_id': 'vld999'}
        expected = {
            "name": 'net_2',
            "vld_id": 'vld999',
            "segmentation_id": None,
            "network_type": None,
            "physical_network": None,
        }
        result = self.sriov._get_network(attr_name)
        self.assertDictEqual(result, expected)

        attr_name = 'a'
        expected = network1
        result = self.sriov._get_network(attr_name)
        self.assertDictEqual(result, expected)

    def test_configure_nics_for_sriov(self):
        with mock.patch("yardstick.ssh.SSH") as ssh:
            ssh_mock = mock.Mock(autospec=ssh.SSH)
            ssh_mock.execute = \
                mock.Mock(return_value=(0, "a", ""))
            ssh.return_value = ssh_mock
        self.sriov.vm_deploy = True
        self.sriov.connection = ssh_mock
        self.sriov.vm_names = ['vm_0', 'vm_1']
        self.sriov.drivers = []
        self.sriov.networks = self.NETWORKS
        self.sriov.helper.get_mac_address = mock.Mock(return_value="")
        self.sriov._get_vf_data = mock.Mock(return_value="")
        self.assertIsNone(self.sriov.configure_nics_for_sriov())

    @mock.patch.object(ssh, 'SSH', return_value=(0, "a", ""))
    @mock.patch.object(model.Libvirt, 'add_sriov_interfaces',
                       return_value='out_xml')
    def test__enable_interfaces(self, mock_add_sriov, mock_ssh):
        self.sriov.vm_deploy = True
        self.sriov.connection = mock_ssh
        self.sriov.vm_names = ['vm_0', 'vm_1']
        self.sriov.drivers = []
        self.sriov.networks = self.NETWORKS
        self.assertEqual(
            'out_xml',
            self.sriov._enable_interfaces(0, 0, ['private_0'], 'test'))
        mock_add_sriov.assert_called_once_with(
            '0000:00:0a.0', 0, self.NETWORKS['private_0']['mac'], 'test')

    @mock.patch.object(model.Libvirt, 'build_vm_xml')
    @mock.patch.object(model.Libvirt, 'check_if_vm_exists_and_delete')
    @mock.patch.object(model.Libvirt, 'write_file')
    @mock.patch.object(model.Libvirt, 'virsh_create_vm')
    def test_setup_sriov_context(self, mock_create_vm, mock_write_file,
                                 mock_check, mock_build_vm_xml):
        self.sriov.servers = {
            'vnf_0': {
                'network_ports': {
                    'mgmt': {'cidr': '152.16.100.10/24'},
                    'xe0': ['private_0'],
                    'xe1': ['public_0']
                }
            }
        }
        connection = mock.Mock()
        self.sriov.connection = connection
        self.sriov.host_mgmt = {'ip': '1.2.3.4'}
        self.sriov.vm_flavor = 'flavor'
        self.sriov.networks = 'networks'
        self.sriov.configure_nics_for_sriov = mock.Mock()
        cfg = '/tmp/vm_sriov_0.xml'
        vm_name = 'vm_0'
        xml_out = mock.Mock()
        mock_build_vm_xml.return_value = (xml_out, '00:00:00:00:00:01')

        with mock.patch.object(self.sriov, 'vnf_node') as mock_vnf_node, \
                mock.patch.object(self.sriov, '_enable_interfaces') as \
                mock_enable_interfaces:
            mock_enable_interfaces.return_value = 'out_xml'
            mock_vnf_node.generate_vnf_instance = mock.Mock(
                return_value='node')
            nodes_out = self.sriov.setup_sriov_context()
        self.assertEqual(['node'], nodes_out)
        mock_vnf_node.generate_vnf_instance.assert_called_once_with(
            'flavor', 'networks', '1.2.3.4', 'vnf_0',
            self.sriov.servers['vnf_0'], '00:00:00:00:00:01')
        mock_build_vm_xml.assert_called_once_with(
            connection, 'flavor', vm_name, 0)
        mock_create_vm.assert_called_once_with(connection, cfg)
        mock_check.assert_called_once_with(vm_name, connection)
        mock_write_file.assert_called_once_with(cfg, 'out_xml')
        mock_enable_interfaces.assert_has_calls([
            mock.call(0, mock.ANY, ['private_0'], mock.ANY),
            mock.call(0, mock.ANY, ['public_0'], mock.ANY)], any_order=True)

    def test__get_vf_data(self):
        with mock.patch("yardstick.ssh.SSH") as ssh:
            ssh_mock = mock.Mock(autospec=ssh.SSH)
            ssh_mock.execute = \
                mock.Mock(return_value=(0, "a", ""))
            ssh_mock.put = \
                mock.Mock(return_value=(0, "a", ""))
            ssh.return_value = ssh_mock
        self.sriov.vm_deploy = True
        self.sriov.connection = ssh_mock
        self.sriov.vm_names = ['vm_0', 'vm_1']
        self.sriov.drivers = []
        self.sriov.servers = {
            'vnf_0': {
                'network_ports': {
                    'mgmt': {'cidr': '152.16.100.10/24'},
                    'xe0': ['private_0'],
                    'xe1': ['public_0']
                }
            }
        }
        self.sriov.networks = self.NETWORKS
        self.sriov.helper.get_virtual_devices = mock.Mock(
            return_value={'0000:00:01.0': ''})
        self.assertIsNotNone(self.sriov._get_vf_data(
            '0000:00:01.0', '00:00:00:00:00:01', 'if0'))