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TestClusterChecker.py
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TestClusterChecker.py
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# Copyright (c) 2018 Ultimaker
# !/usr/bin/env python
# -*- coding: utf-8 -*-
from copy import deepcopy
from unittest import TestCase
from unittest.mock import patch, call
from mongoOperator.helpers.ClusterChecker import ClusterChecker
from mongoOperator.models.V1MongoClusterConfiguration import V1MongoClusterConfiguration
from tests.test_utils import getExampleClusterDefinition
class TestClusterChecker(TestCase):
maxDiff = None
def setUp(self):
super().setUp()
with patch("mongoOperator.helpers.ClusterChecker.KubernetesService") as ks:
self.checker = ClusterChecker()
self.kubernetes_service = ks.return_value
self.cluster_dict = getExampleClusterDefinition()
self.cluster_dict["metadata"]["resourceVersion"] = "100"
self.cluster_object = V1MongoClusterConfiguration(**self.cluster_dict)
def _getMongoFixture(self, name):
with open("tests/fixtures/mongo_responses/{}.txt".format(name)) as f:
return f.read()
def test___init__(self):
self.assertEqual(self.kubernetes_service, self.checker.kubernetes_service)
self.assertEqual(self.kubernetes_service, self.checker.mongo_service.kubernetes_service)
self.assertEqual(3, len(self.checker.resource_checkers), self.checker.resource_checkers)
self.assertEqual({}, self.checker.cluster_versions)
def test__parseConfiguration_ok(self):
self.assertEqual(self.cluster_object, self.checker._parseConfiguration(self.cluster_dict))
def test__parseConfiguration_error(self):
self.assertIsNone(self.checker._parseConfiguration({"invalid": "dict"}))
def test_checkExistingClusters_empty(self):
self.kubernetes_service.listMongoObjects.return_value = {"items": []}
self.checker.checkExistingClusters()
expected = [call.listMongoObjects()]
self.assertEqual(expected, self.kubernetes_service.mock_calls)
self.assertEqual({}, self.checker.cluster_versions)
def test_checkExistingClusters_bad_format(self):
self.kubernetes_service.listMongoObjects.return_value = {"items": [{"invalid": "object"}]}
self.checker.checkExistingClusters()
expected = [call.listMongoObjects()]
self.assertEqual(expected, self.kubernetes_service.mock_calls)
self.assertEqual({}, self.checker.cluster_versions)
@patch("mongoOperator.helpers.BackupChecker.BackupChecker.backupIfNeeded")
def test_checkExistingClusters(self, backup_mock):
self.checker.cluster_versions[("mongo-cluster", "default")] = "100" # checkCluster will assume cached version
self.kubernetes_service.listMongoObjects.return_value = {"items": [self.cluster_dict]}
self.kubernetes_service.execInPod.return_value = self._getMongoFixture("replica-status-ok")
self.checker.checkExistingClusters()
self.assertEqual({("mongo-cluster", "default"): "100"}, self.checker.cluster_versions)
expected = [call.listMongoObjects(),
call.execInPod('mongodb', 'mongo-cluster-0', 'default',
['mongo', 'localhost:27017/admin', '--eval', 'rs.status()'])]
self.assertEqual(expected, self.kubernetes_service.mock_calls)
backup_mock.assert_called_once_with(self.cluster_object)
@patch("mongoOperator.helpers.ClusterChecker.ClusterChecker.checkCluster")
@patch("kubernetes.watch.watch.Watch.stream")
def test_streamEvents_add_update(self, stream_mock, check_mock):
updated_cluster = deepcopy(self.cluster_dict)
updated_cluster["spec"]["mongodb"]["replicas"] = 5
updated_cluster["metadata"]["resource_version"] = "200"
stream_mock.return_value = [
{"type": "ADDED", "object": self.cluster_dict},
{"type": "MODIFIED", "object": updated_cluster},
]
self.checker.streamEvents()
self.assertEqual([call(self.cluster_object), call(V1MongoClusterConfiguration(**updated_cluster))],
check_mock.mock_calls)
stream_mock.assert_called_once_with(self.kubernetes_service.listMongoObjects,
_request_timeout=self.checker.STREAM_REQUEST_TIMEOUT)
@patch("mongoOperator.helpers.ClusterChecker.Watch")
def test_streamEvents_bad_event(self, watch_mock):
stream_mock = watch_mock.return_value.stream
stream_mock.return_value = [{"type": "UNKNOWN", "object": self.cluster_dict}]
self.checker.streamEvents()
stream_mock.assert_called_once_with(self.kubernetes_service.listMongoObjects,
_request_timeout=self.checker.STREAM_REQUEST_TIMEOUT)
self.assertTrue(watch_mock.return_value.stop)
@patch("mongoOperator.helpers.ClusterChecker.ClusterChecker.collectGarbage")
@patch("kubernetes.watch.watch.Watch.stream")
def test_streamEvents_delete(self, stream_mock, garbage_mock):
stream_mock.return_value = [{"type": "DELETED"}]
self.checker.streamEvents()
garbage_mock.assert_called_once_with()
stream_mock.assert_called_once_with(self.kubernetes_service.listMongoObjects,
_request_timeout = self.checker.STREAM_REQUEST_TIMEOUT)
@patch("mongoOperator.helpers.ClusterChecker.Watch")
def test_streamEvents_bad_cluster(self, watch_mock):
self.checker.cluster_versions[("mongo-cluster", "default")] = "100"
stream_mock = watch_mock.return_value.stream
stream_mock.return_value = [{"type": "ADDED", "object": {"thisIsNot": "a_cluster"}}]
self.checker.streamEvents()
stream_mock.assert_called_once_with(self.kubernetes_service.listMongoObjects,
_request_timeout=self.checker.STREAM_REQUEST_TIMEOUT)
self.assertTrue(watch_mock.return_value.stop)
self.assertEquals("100", watch_mock.return_value.resource_version)
@patch("mongoOperator.helpers.BaseResourceChecker.BaseResourceChecker.cleanResources")
@patch("mongoOperator.helpers.BaseResourceChecker.BaseResourceChecker.listResources")
def test_collectGarbage(self, list_mock, clean_mock):
list_mock.return_value = [self.cluster_object]
self.checker.collectGarbage()
self.assertEqual([call()] * 3, clean_mock.mock_calls)
self.assertEqual([], self.kubernetes_service.mock_calls) # k8s is not called because we mocked everything
@patch("mongoOperator.helpers.BackupChecker.BackupChecker.backupIfNeeded")
def test_checkCluster_same_version(self, backup_mock):
self.checker.cluster_versions[("mongo-cluster", "default")] = "100" # checkCluster will assume cached version
self.kubernetes_service.execInPod.return_value = self._getMongoFixture("replica-status-ok")
self.checker.checkCluster(self.cluster_object)
self.assertEqual({("mongo-cluster", "default"): "100"}, self.checker.cluster_versions)
expected = [call.execInPod('mongodb', 'mongo-cluster-0', 'default',
['mongo', 'localhost:27017/admin', '--eval', 'rs.status()'])]
self.assertEqual(expected, self.kubernetes_service.mock_calls)
backup_mock.assert_called_once_with(self.cluster_object)
@patch("mongoOperator.helpers.BackupChecker.BackupChecker.backupIfNeeded")
@patch("mongoOperator.helpers.MongoResources.MongoResources.createCreateAdminCommand")
@patch("mongoOperator.helpers.BaseResourceChecker.BaseResourceChecker.checkResource")
def test_checkCluster_new_version(self, check_mock, admin_mock, backup_mock):
self.checker.cluster_versions[("mongo-cluster", "default")] = "50"
self.kubernetes_service.execInPod.side_effect = (self._getMongoFixture("replica-status-ok"),
self._getMongoFixture("createUser-exists"))
self.checker.checkCluster(self.cluster_object)
self.assertEqual({("mongo-cluster", "default"): "100"}, self.checker.cluster_versions)
expected = [call.execInPod('mongodb', 'mongo-cluster-0', 'default',
['mongo', 'localhost:27017/admin', '--eval', 'rs.status()']),
call.getSecret('mongo-cluster-admin-credentials', 'default'),
call.execInPod('mongodb', 'mongo-cluster-0', 'default', [
'mongo', 'localhost:27017/admin', '--eval', admin_mock.return_value
])]
self.assertEqual(expected, self.kubernetes_service.mock_calls)
self.assertEqual([call(self.cluster_object)] * 3, check_mock.mock_calls)
backup_mock.assert_called_once_with(self.cluster_object)