kuryr-kubernetes/kuryr_kubernetes/tests/unit/test_utils.py

# Copyright 2018 Red Hat, Inc.
#
# 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 mock

from os_vif import objects
from oslo_config import cfg

from kuryr_kubernetes import constants as k_const
from kuryr_kubernetes import exceptions as k_exc
from kuryr_kubernetes.objects import vif
from kuryr_kubernetes.tests import base as test_base
from kuryr_kubernetes.tests.unit import kuryr_fixtures as k_fix
from kuryr_kubernetes import utils

CONF = cfg.CONF


class TestUtils(test_base.TestCase):
    @mock.patch('socket.gethostname')
    def test_get_node_name(self, m_gethostname):
        m_gethostname.return_value = 'foo'
        res = utils.get_node_name()
        self.assertEqual('foo', res)
        m_gethostname.assert_called_once_with()

    @mock.patch('requests.get')
    def test_get_leader_name(self, m_get):
        m_get.return_value = mock.Mock(json=mock.Mock(
            return_value={'name': 'foo'}))
        res = utils.get_leader_name()
        m_get.assert_called_once_with(
            'http://localhost:%d' % CONF.kubernetes.controller_ha_elector_port)
        self.assertEqual('foo', res)

    @mock.patch('requests.get')
    def test_get_leader_name_malformed(self, m_get):
        m_get.return_value = mock.Mock(json=mock.Mock(
            return_value={'name2': 'foo'}))
        res = utils.get_leader_name()
        m_get.assert_called_once_with(
            'http://localhost:%d' % CONF.kubernetes.controller_ha_elector_port)
        self.assertIsNone(res)

    @mock.patch('requests.get')
    def test_get_leader_name_exc(self, m_get):
        m_get.side_effect = Exception
        res = utils.get_leader_name()
        m_get.assert_called_once_with(
            'http://localhost:%d' % CONF.kubernetes.controller_ha_elector_port)
        self.assertIsNone(res)

    @mock.patch('kuryr_kubernetes.os_vif_util.neutron_to_osvif_network')
    @mock.patch('kuryr_kubernetes.os_vif_util.neutron_to_osvif_subnet')
    def test_get_subnet(self, m_osv_subnet, m_osv_network):
        neutron = self.useFixture(k_fix.MockNeutronClient()).client

        subnet = mock.MagicMock()
        network = mock.MagicMock()
        subnet_id = mock.sentinel.subnet_id
        network_id = mock.sentinel.network_id

        neutron_subnet = {'network_id': network_id}
        neutron_network = mock.sentinel.neutron_network

        neutron.show_subnet.return_value = {'subnet': neutron_subnet}
        neutron.show_network.return_value = {'network': neutron_network}

        m_osv_subnet.return_value = subnet
        m_osv_network.return_value = network

        ret = utils.get_subnet(subnet_id)

        self.assertEqual(network, ret)
        neutron.show_subnet.assert_called_once_with(subnet_id)
        neutron.show_network.assert_called_once_with(network_id)
        m_osv_subnet.assert_called_once_with(neutron_subnet)
        m_osv_network.assert_called_once_with(neutron_network)
        network.subnets.objects.append.assert_called_once_with(subnet)

    def test_extract_pod_annotation(self):
        vif_obj = objects.vif.VIFBase()
        ps = vif.PodState(default_vif=vif_obj)
        d = ps.obj_to_primitive()
        result = utils.extract_pod_annotation(d)
        self.assertEqual(vif.PodState.obj_name(), result.obj_name())
        self.assertEqual(vif_obj, result.default_vif)

    def test_extract_pod_annotation_convert(self):
        vif_obj = objects.vif.VIFBase()
        d = vif_obj.obj_to_primitive()
        result = utils.extract_pod_annotation(d)
        self.assertEqual(vif.PodState.obj_name(), result.obj_name())
        self.assertEqual(vif_obj, result.default_vif)

    def test__has_kuryrnet_crd(self):
        kuryrnet_crd = {
            "apiVersion": "openstack.org/v1",
            "items": [

            ],
            "kind": "KuryrNetList",
            "metadata": {
                "continue": "",
                "resourceVersion": "33018",
                "selfLink": "/apis/openstack.org/v1/kuryrnets"
            }
        }

        kubernetes = self.useFixture(k_fix.MockK8sClient()).client
        kubernetes.get.return_value = kuryrnet_crd

        kuryrnets_url = k_const.K8S_API_CRD_KURYRNETS
        resp = utils.has_kuryr_crd(kuryrnets_url)

        self.assertEqual(resp, True)

    def test__has_kuryrnetpolicy_crd(self):
        kuryrnetpolicies_crd = {
            "apiVersion": "openstack.org/v1",
            "items": [

            ],
            "kind": "KuryrNetPolicyList",
            "metadata": {
                "continue": "",
                "resourceVersion": "34186",
                "selfLink": "/apis/openstack.org/v1/kuryrnetpolicies"
            }
        }
        kubernetes = self.useFixture(k_fix.MockK8sClient()).client
        kubernetes.get.return_value = kuryrnetpolicies_crd

        kuryrnetpolicies_url = k_const.K8S_API_CRD_KURYRNETPOLICIES
        resp = utils.has_kuryr_crd(kuryrnetpolicies_url)

        self.assertEqual(resp, True)

    def test__has_kuryr_crd_error(self):
        crds = [k_const.K8S_API_CRD_KURYRNETS,
                k_const.K8S_API_CRD_KURYRNETPOLICIES]
        for crd_url in crds:
            kubernetes = self.useFixture(k_fix.MockK8sClient()).client
            kubernetes.get.side_effect = k_exc.K8sClientException

            resp = utils.has_kuryr_crd(crd_url)
            self.assertEqual(resp, False)

            kubernetes.get.assert_called_once()

    def test_get_endpoints_link(self):
        service = {'metadata': {
            'selfLink': "/api/v1/namespaces/default/services/test"}}
        ret = utils.get_endpoints_link(service)
        expected_link = "/api/v1/namespaces/default/endpoints/test"
        self.assertEqual(expected_link, ret)