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patroni/tests/test_kubernetes.py
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Alexander KukushkinGitHubzhjwpku
 bcfd8438a5 Abstract CitusHandler and decouple it from configuration (#2950) 
the main issue was that the configuration for Citus handler and for DCS existed in two places, while ideally AbstractDCS should not know many details about what kind of MPP is in use.

To solve the problem we first dynamically create an object implementing AbstractMPP interfaces, which is a configuration for DCS. Later this object is used to instantiate the class implementing AbstractMPPHandler interface.

This is just a starting point, which does some heavy lifting. As a next steps all kind of variables named after Citus in files different from patroni/postgres/mpp/citus.py should be renamed.

In other words this commit takes over the most complex part of #2940, which was never implemented.

Co-authored-by: zhjwpku <[email protected]>
2023-12-21 08:58:26 +01:00

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import base64
import datetime
import json
import mock
import socket
import time
import unittest
import urllib3
from mock import Mock, PropertyMock, mock_open, patch
from patroni.dcs import get_dcs
from patroni.dcs.kubernetes import Cluster, k8s_client, k8s_config, K8sConfig, K8sConnectionFailed, \
K8sException, K8sObject, Kubernetes, KubernetesError, KubernetesRetriableException, \
Retry, RetryFailedError, SERVICE_HOST_ENV_NAME, SERVICE_PORT_ENV_NAME
from patroni.postgresql.mpp import get_mpp
from threading import Thread
from . import MockResponse, SleepException
def mock_list_namespaced_config_map(*args, **kwargs):
metadata = {'resource_version': '1', 'labels': {'f': 'b'}, 'name': 'test-config',
'annotations': {'initialize': '123', 'config': '{}'}}
items = [k8s_client.V1ConfigMap(metadata=k8s_client.V1ObjectMeta(**metadata))]
metadata.update({'name': 'test-leader',
'annotations': {'optime': '1234x', 'leader': 'p-0', 'ttl': '30s', 'slots': '{', 'failsafe': '{'}})
items.append(k8s_client.V1ConfigMap(metadata=k8s_client.V1ObjectMeta(**metadata)))
metadata.update({'name': 'test-failover', 'annotations': {'leader': 'p-0'}})
items.append(k8s_client.V1ConfigMap(metadata=k8s_client.V1ObjectMeta(**metadata)))
metadata.update({'name': 'test-sync', 'annotations': {'leader': 'p-0'}})
items.append(k8s_client.V1ConfigMap(metadata=k8s_client.V1ObjectMeta(**metadata)))
metadata.update({'name': 'test-0-leader', 'labels': {Kubernetes._CITUS_LABEL: '0'},
'annotations': {'optime': '1234x', 'leader': 'p-0', 'ttl': '30s', 'slots': '{', 'failsafe': '{'}})
items.append(k8s_client.V1ConfigMap(metadata=k8s_client.V1ObjectMeta(**metadata)))
metadata.update({'name': 'test-0-config', 'labels': {Kubernetes._CITUS_LABEL: '0'},
'annotations': {'initialize': '123', 'config': '{}'}})
items.append(k8s_client.V1ConfigMap(metadata=k8s_client.V1ObjectMeta(**metadata)))
metadata.update({'name': 'test-1-leader', 'labels': {Kubernetes._CITUS_LABEL: '1'},
'annotations': {'leader': 'p-3', 'ttl': '30s'}})
items.append(k8s_client.V1ConfigMap(metadata=k8s_client.V1ObjectMeta(**metadata)))
metadata.update({'name': 'test-2-config', 'labels': {Kubernetes._CITUS_LABEL: '2'}, 'annotations': {}})
items.append(k8s_client.V1ConfigMap(metadata=k8s_client.V1ObjectMeta(**metadata)))
metadata = k8s_client.V1ObjectMeta(resource_version='1')
return k8s_client.V1ConfigMapList(metadata=metadata, items=items, kind='ConfigMapList')
def mock_read_namespaced_endpoints(*args, **kwargs):
target_ref = k8s_client.V1ObjectReference(kind='Pod', resource_version='10', name='p-0',
namespace='default', uid='964dfeae-e79b-4476-8a5a-1920b5c2a69d')
address0 = k8s_client.V1EndpointAddress(ip='10.0.0.0', target_ref=target_ref)
address1 = k8s_client.V1EndpointAddress(ip='10.0.0.1')
port = k8s_client.V1EndpointPort(port=5432, name='postgresql', protocol='TCP')
subset = k8s_client.V1EndpointSubset(addresses=[address1, address0], ports=[port])
metadata = k8s_client.V1ObjectMeta(resource_version='1', labels={'f': 'b'}, name='test',
annotations={'optime': '1234', 'leader': 'p-0', 'ttl': '30s'})
return k8s_client.V1Endpoints(subsets=[subset], metadata=metadata)
def mock_list_namespaced_endpoints(*args, **kwargs):
return k8s_client.V1EndpointsList(metadata=k8s_client.V1ObjectMeta(resource_version='1'),
items=[mock_read_namespaced_endpoints()], kind='V1EndpointsList')
def mock_list_namespaced_pod(*args, **kwargs):
metadata = k8s_client.V1ObjectMeta(resource_version='1', labels={'f': 'b', Kubernetes._CITUS_LABEL: '1'},
name='p-0', annotations={'status': '{}'},
uid='964dfeae-e79b-4476-8a5a-1920b5c2a69d')
status = k8s_client.V1PodStatus(pod_ip='10.0.0.1')
spec = k8s_client.V1PodSpec(hostname='p-0', node_name='kind-control-plane', containers=[])
items = [k8s_client.V1Pod(metadata=metadata, status=status, spec=spec)]
return k8s_client.V1PodList(items=items, kind='PodList')
def mock_namespaced_kind(*args, **kwargs):
mock = Mock()
mock.metadata.resource_version = '2'
return mock
def mock_load_k8s_config(self, *args, **kwargs):
self._server = ''
class TestK8sConfig(unittest.TestCase):
def test_load_incluster_config(self):
for env in ({}, {SERVICE_HOST_ENV_NAME: '', SERVICE_PORT_ENV_NAME: ''}):
with patch('os.environ', env):
self.assertRaises(k8s_config.ConfigException, k8s_config.load_incluster_config)
with patch('os.environ', {SERVICE_HOST_ENV_NAME: 'a', SERVICE_PORT_ENV_NAME: '1'}), \
patch('os.path.isfile', Mock(side_effect=[False, True, True, False, True, True, True, True])), \
patch('builtins.open', Mock(side_effect=[
mock_open()(), mock_open(read_data='a')(), mock_open(read_data='a')(),
mock_open()(), mock_open(read_data='a')(), mock_open(read_data='a')()])):
for _ in range(0, 4):
self.assertRaises(k8s_config.ConfigException, k8s_config.load_incluster_config)
k8s_config.load_incluster_config()
self.assertEqual(k8s_config.server, 'https://a:1')
self.assertEqual(k8s_config.headers.get('authorization'), 'Bearer a')
def test_refresh_token(self):
with patch('os.environ', {SERVICE_HOST_ENV_NAME: 'a', SERVICE_PORT_ENV_NAME: '1'}), \
patch('os.path.isfile', Mock(side_effect=[True, True, False, True, True, True])), \
patch('builtins.open', Mock(side_effect=[
mock_open(read_data='cert')(), mock_open(read_data='a')(),
mock_open()(), mock_open(read_data='b')(), mock_open(read_data='c')()])):
k8s_config.load_incluster_config(token_refresh_interval=datetime.timedelta(milliseconds=100))
self.assertEqual(k8s_config.headers.get('authorization'), 'Bearer a')
time.sleep(0.1)
# token file doesn't exist
self.assertEqual(k8s_config.headers.get('authorization'), 'Bearer a')
# token file is empty
self.assertEqual(k8s_config.headers.get('authorization'), 'Bearer a')
# token refreshed
self.assertEqual(k8s_config.headers.get('authorization'), 'Bearer b')
time.sleep(0.1)
# token refreshed
self.assertEqual(k8s_config.headers.get('authorization'), 'Bearer c')
# no need to refresh token
self.assertEqual(k8s_config.headers.get('authorization'), 'Bearer c')
def test_load_kube_config(self):
config = {
"current-context": "local",
"contexts": [{"name": "local", "context": {"user": "local", "cluster": "local"}}],
"clusters": [{"name": "local", "cluster": {"server": "https://a:1/", "certificate-authority": "a"}}],
"users": [{"name": "local", "user": {"username": "a", "password": "b", "client-certificate": "c"}}]
}
with patch('builtins.open', mock_open(read_data=json.dumps(config))):
k8s_config.load_kube_config()
self.assertEqual(k8s_config.server, 'https://a:1')
self.assertEqual(k8s_config.pool_config, {'ca_certs': 'a', 'cert_file': 'c', 'cert_reqs': 'CERT_REQUIRED',
'maxsize': 10, 'num_pools': 10})
config["users"][0]["user"]["token"] = "token"
with patch('builtins.open', mock_open(read_data=json.dumps(config))):
k8s_config.load_kube_config()
self.assertEqual(k8s_config.headers.get('authorization'), 'Bearer token')
config["users"][0]["user"]["client-key-data"] = base64.b64encode(b'foobar').decode('utf-8')
config["clusters"][0]["cluster"]["certificate-authority-data"] = base64.b64encode(b'foobar').decode('utf-8')
with patch('builtins.open', mock_open(read_data=json.dumps(config))), \
patch('os.write', Mock()), patch('os.close', Mock()), \
patch('os.remove') as mock_remove, \
patch('atexit.register') as mock_atexit, \
patch('tempfile.mkstemp') as mock_mkstemp:
mock_mkstemp.side_effect = [(3, '1.tmp'), (4, '2.tmp')]
k8s_config.load_kube_config()
mock_atexit.assert_called_once()
mock_remove.side_effect = OSError
mock_atexit.call_args[0][0]() # call _cleanup_temp_files
mock_remove.assert_has_calls([mock.call('1.tmp'), mock.call('2.tmp')])
@patch('urllib3.PoolManager.request')
class TestApiClient(unittest.TestCase):
@patch.object(K8sConfig, '_server', '', create=True)
@patch('urllib3.PoolManager.request', Mock())
def setUp(self):
self.a = k8s_client.ApiClient(True)
self.mock_get_ep = MockResponse()
self.mock_get_ep.content = '{"subsets":[{"ports":[{"name":"https","protocol":"TCP","port":443}],' +\
'"addresses":[{"ip":"127.0.0.1"},{"ip":"127.0.0.2"}]}]}'
def test__do_http_request(self, mock_request):
mock_request.side_effect = [self.mock_get_ep] + [socket.timeout]
self.assertRaises(K8sException, self.a.call_api, 'GET', 'f')
@patch('time.sleep', Mock())
def test_request(self, mock_request):
retry = Retry(deadline=10, max_delay=1, max_tries=1, retry_exceptions=KubernetesRetriableException)
mock_request.side_effect = [self.mock_get_ep] + 3 * [socket.timeout] + [k8s_client.rest.ApiException(500, '')]
self.assertRaises(k8s_client.rest.ApiException, retry, self.a.call_api, 'GET', 'f', _retry=retry)
mock_request.side_effect = [self.mock_get_ep, socket.timeout, Mock(), self.mock_get_ep]
self.assertRaises(k8s_client.rest.ApiException, retry, self.a.call_api, 'GET', 'f', _retry=retry)
retry.deadline = 0.0001
mock_request.side_effect = [socket.timeout, socket.timeout, self.mock_get_ep]
self.assertRaises(K8sConnectionFailed, retry, self.a.call_api, 'GET', 'f', _retry=retry)
def test__refresh_api_servers_cache(self, mock_request):
mock_request.side_effect = k8s_client.rest.ApiException(403, '')
self.a.refresh_api_servers_cache()
class TestCoreV1Api(unittest.TestCase):
@patch('urllib3.PoolManager.request', Mock())
@patch.object(K8sConfig, '_server', '', create=True)
def setUp(self):
self.a = k8s_client.CoreV1Api()
self.a._api_client.pool_manager.request = Mock(return_value=MockResponse())
def test_create_namespaced_service(self):
self.assertEqual(str(self.a.create_namespaced_service('default', {}, _request_timeout=2)), '{}')
def test_list_namespaced_endpoints(self):
self.a._api_client.pool_manager.request.return_value.content = '{"items": [1,2,3]}'
self.assertIsInstance(self.a.list_namespaced_endpoints('default'), K8sObject)
def test_patch_namespaced_config_map(self):
self.assertEqual(str(self.a.patch_namespaced_config_map('foo', 'default', {}, _request_timeout=(1, 2))), '{}')
def test_list_namespaced_pod(self):
self.a._api_client.pool_manager.request.return_value.status_code = 409
self.a._api_client.pool_manager.request.return_value.content = 'foo'
try:
self.a.list_namespaced_pod('default', label_selector='foo=bar')
self.assertFail()
except k8s_client.rest.ApiException as e:
self.assertTrue('Reason: ' in str(e))
def test_delete_namespaced_pod(self):
self.assertEqual(str(self.a.delete_namespaced_pod('foo', 'default', _request_timeout=(1, 2), body={})), '{}')
class BaseTestKubernetes(unittest.TestCase):
@patch('urllib3.PoolManager.request', Mock())
@patch('socket.TCP_KEEPIDLE', 4, create=True)
@patch('socket.TCP_KEEPINTVL', 5, create=True)
@patch('socket.TCP_KEEPCNT', 6, create=True)
@patch.object(Thread, 'start', Mock())
@patch.object(K8sConfig, 'load_kube_config', mock_load_k8s_config)
@patch.object(K8sConfig, 'load_incluster_config', Mock(side_effect=k8s_config.ConfigException))
@patch.object(k8s_client.CoreV1Api, 'list_namespaced_pod', mock_list_namespaced_pod, create=True)
@patch.object(k8s_client.CoreV1Api, 'list_namespaced_config_map', mock_list_namespaced_config_map, create=True)
def setUp(self, config=None):
config = {'ttl': 30, 'scope': 'test', 'name': 'p-0', 'loop_wait': 10, 'retry_timeout': 10,
'kubernetes': {'labels': {'f': 'b'}, 'bypass_api_service': True, **(config or {})},
'citus': {'group': 0, 'database': 'postgres'}}
self.k = get_dcs(config)
self.assertIsInstance(self.k, Kubernetes)
self.k._mpp = get_mpp({})
self.assertRaises(AttributeError, self.k._pods._build_cache)
self.k._pods._is_ready = True
self.assertRaises(TypeError, self.k._kinds._build_cache)
self.k._kinds._is_ready = True
self.k.get_cluster()
@patch.object(k8s_client.CoreV1Api, 'patch_namespaced_config_map', mock_namespaced_kind, create=True)
class TestKubernetesConfigMaps(BaseTestKubernetes):
@patch('time.time', Mock(side_effect=[1, 10.9, 100]))
def test__wait_caches(self):
self.k._pods._is_ready = False
with self.k._condition:
self.assertRaises(RetryFailedError, self.k._wait_caches, time.time() + 10)
@patch('time.time', Mock(return_value=time.time() + 100))
def test_get_cluster(self):
self.k.get_cluster()
with patch.object(Kubernetes, '_wait_caches', Mock(side_effect=Exception)):
self.assertRaises(KubernetesError, self.k.get_cluster)
def test__get_citus_cluster(self):
self.k._mpp = get_mpp({'citus': {'group': 0, 'database': 'postgres'}})
cluster = self.k.get_cluster()
self.assertIsInstance(cluster, Cluster)
self.assertIsInstance(cluster.workers[1], Cluster)
@patch('patroni.dcs.kubernetes.logger.error')
def test_get_citus_coordinator(self, mock_logger):
self.assertIsInstance(self.k.get_citus_coordinator(), Cluster)
with patch.object(Kubernetes, '_cluster_loader', Mock(side_effect=Exception)):
self.assertIsNone(self.k.get_citus_coordinator())
mock_logger.assert_called()
self.assertTrue(mock_logger.call_args[0][0].startswith('Failed to load Citus coordinator'))
def test_attempt_to_acquire_leader(self):
with patch.object(k8s_client.CoreV1Api, 'patch_namespaced_config_map', create=True) as mock_patch:
mock_patch.side_effect = K8sException
self.assertRaises(KubernetesError, self.k.attempt_to_acquire_leader)
mock_patch.side_effect = k8s_client.rest.ApiException(409, '')
self.assertFalse(self.k.attempt_to_acquire_leader())
def test_take_leader(self):
self.k.take_leader()
self.k._leader_observed_record['leader'] = 'test'
self.k.patch_or_create = Mock(return_value=False)
self.k.take_leader()
def test_manual_failover(self):
with patch.object(k8s_client.CoreV1Api, 'patch_namespaced_config_map',
Mock(side_effect=RetryFailedError('')), create=True):
self.k.manual_failover('foo', 'bar')
def test_set_config_value(self):
with patch.object(k8s_client.CoreV1Api, 'patch_namespaced_config_map',
Mock(side_effect=k8s_client.rest.ApiException(409, '')), create=True):
self.k.set_config_value('{}', 1)
@patch.object(k8s_client.CoreV1Api, 'patch_namespaced_pod', create=True)
def test_touch_member(self, mock_patch_namespaced_pod):
mock_patch_namespaced_pod.return_value.metadata.resource_version = '10'
self.k.touch_member({'role': 'replica'})
self.k._name = 'p-1'
self.k.touch_member({'state': 'running', 'role': 'replica'})
self.k.touch_member({'state': 'stopped', 'role': 'primary'})
self.k._role_label = 'isMaster'
self.k._leader_label_value = 'true'
self.k._follower_label_value = 'false'
self.k._standby_leader_label_value = 'false'
self.k._tmp_role_label = 'tmp_role'
self.k.touch_member({'state': 'running', 'role': 'replica'})
mock_patch_namespaced_pod.assert_called()
self.assertEqual(mock_patch_namespaced_pod.call_args[0][2].metadata.labels['isMaster'], 'false')
self.assertEqual(mock_patch_namespaced_pod.call_args[0][2].metadata.labels['tmp_role'], 'replica')
mock_patch_namespaced_pod.rest_mock()
self.k._name = 'p-0'
self.k.touch_member({'role': 'standby_leader'})
mock_patch_namespaced_pod.assert_called()
self.assertEqual(mock_patch_namespaced_pod.call_args[0][2].metadata.labels['isMaster'], 'false')
self.assertEqual(mock_patch_namespaced_pod.call_args[0][2].metadata.labels['tmp_role'], 'master')
mock_patch_namespaced_pod.rest_mock()
self.k.touch_member({'role': 'primary'})
mock_patch_namespaced_pod.assert_called()
self.assertEqual(mock_patch_namespaced_pod.call_args[0][2].metadata.labels['isMaster'], 'true')
self.assertEqual(mock_patch_namespaced_pod.call_args[0][2].metadata.labels['tmp_role'], 'master')
def test_initialize(self):
self.k.initialize()
def test_delete_leader(self):
self.k.delete_leader(self.k.get_cluster().leader, 1)
def test_cancel_initialization(self):
self.k.cancel_initialization()
@patch.object(k8s_client.CoreV1Api, 'delete_collection_namespaced_config_map',
Mock(side_effect=k8s_client.rest.ApiException(403, '')), create=True)
def test_delete_cluster(self):
self.k.delete_cluster()
def test_watch(self):
self.k.set_ttl(10)
self.k.watch(None, 0)
self.k.watch('5', 0)
def test_set_history_value(self):
self.k.set_history_value('{}')
@patch('patroni.dcs.kubernetes.logger.warning')
def test_reload_config(self, mock_warning):
self.k.reload_config({'loop_wait': 10, 'ttl': 30, 'retry_timeout': 10, 'retriable_http_codes': '401, 403 '})
self.assertEqual(self.k._api._retriable_http_codes, self.k._api._DEFAULT_RETRIABLE_HTTP_CODES | set([401, 403]))
self.k.reload_config({'loop_wait': 10, 'ttl': 30, 'retry_timeout': 10, 'retriable_http_codes': 402})
self.assertEqual(self.k._api._retriable_http_codes, self.k._api._DEFAULT_RETRIABLE_HTTP_CODES | set([402]))
self.k.reload_config({'loop_wait': 10, 'ttl': 30, 'retry_timeout': 10, 'retriable_http_codes': [405, 406]})
self.assertEqual(self.k._api._retriable_http_codes, self.k._api._DEFAULT_RETRIABLE_HTTP_CODES | set([405, 406]))
self.k.reload_config({'loop_wait': 10, 'ttl': 30, 'retry_timeout': 10, 'retriable_http_codes': True})
mock_warning.assert_called_once()
class TestKubernetesEndpointsNoPodIP(BaseTestKubernetes):
@patch.object(k8s_client.CoreV1Api, 'list_namespaced_endpoints', mock_list_namespaced_endpoints, create=True)
def setUp(self, config=None):
super(TestKubernetesEndpointsNoPodIP, self).setUp({'use_endpoints': True})
@patch.object(k8s_client.CoreV1Api, 'patch_namespaced_endpoints', create=True)
def test_update_leader(self, mock_patch_namespaced_endpoints):
leader = self.k.get_cluster().leader
self.assertIsNotNone(self.k.update_leader(leader, '123', failsafe={'foo': 'bar'}))
args = mock_patch_namespaced_endpoints.call_args[0]
self.assertEqual(args[2].subsets[0].addresses[0].target_ref.resource_version, '1')
self.assertEqual(args[2].subsets[0].addresses[0].ip, '10.0.0.1')
class TestKubernetesEndpoints(BaseTestKubernetes):
@patch.object(k8s_client.CoreV1Api, 'list_namespaced_endpoints', mock_list_namespaced_endpoints, create=True)
def setUp(self, config=None):
super(TestKubernetesEndpoints, self).setUp({'use_endpoints': True, 'pod_ip': '10.0.0.0'})
@patch.object(k8s_client.CoreV1Api, 'patch_namespaced_endpoints', create=True)
def test_update_leader(self, mock_patch_namespaced_endpoints):
leader = self.k.get_cluster().leader
self.assertIsNotNone(self.k.update_leader(leader, '123', failsafe={'foo': 'bar'}))
args = mock_patch_namespaced_endpoints.call_args[0]
self.assertEqual(args[2].subsets[0].addresses[0].target_ref.resource_version, '10')
self.assertEqual(args[2].subsets[0].addresses[0].ip, '10.0.0.0')
self.k._kinds._object_cache['test'].subsets[:] = []
self.assertIsNotNone(self.k.update_leader(leader, '123'))
self.k._kinds._object_cache['test'].metadata.annotations['leader'] = 'p-1'
self.assertFalse(self.k.update_leader(leader, '123'))
@patch.object(k8s_client.CoreV1Api, 'read_namespaced_endpoints', create=True)
@patch.object(k8s_client.CoreV1Api, 'patch_namespaced_endpoints', create=True)
def test__update_leader_with_retry(self, mock_patch, mock_read):
leader = self.k.get_cluster().leader
mock_read.return_value = mock_read_namespaced_endpoints()
mock_patch.side_effect = k8s_client.rest.ApiException(502, '')
self.assertFalse(self.k.update_leader(leader, '123'))
mock_patch.side_effect = RetryFailedError('')
self.assertRaises(KubernetesError, self.k.update_leader, leader, '123')
mock_patch.side_effect = k8s_client.rest.ApiException(409, '')
with patch('time.time', Mock(side_effect=[0, 100, 200, 0, 0, 0, 0, 100, 200])):
self.assertFalse(self.k.update_leader(leader, '123'))
self.assertFalse(self.k.update_leader(leader, '123'))
self.assertFalse(self.k.update_leader(leader, '123'))
mock_patch.side_effect = [k8s_client.rest.ApiException(409, ''), mock_namespaced_kind()]
mock_read.return_value.metadata.resource_version = '2'
self.assertIsNotNone(self.k._update_leader_with_retry({}, '1', []))
mock_patch.side_effect = k8s_client.rest.ApiException(409, '')
mock_read.side_effect = RetryFailedError('')
self.assertRaises(KubernetesError, self.k.update_leader, leader, '123')
mock_read.side_effect = Exception
self.assertFalse(self.k.update_leader(leader, '123'))
@patch.object(k8s_client.CoreV1Api, 'patch_namespaced_endpoints',
Mock(side_effect=[k8s_client.rest.ApiException(500, ''),
k8s_client.rest.ApiException(502, '')]), create=True)
def test_delete_sync_state(self):
self.assertFalse(self.k.delete_sync_state(1))
@patch.object(k8s_client.CoreV1Api, 'patch_namespaced_endpoints', mock_namespaced_kind, create=True)
def test_write_sync_state(self):
self.assertIsNotNone(self.k.write_sync_state('a', ['b'], 1))
@patch.object(k8s_client.CoreV1Api, 'patch_namespaced_pod', mock_namespaced_kind, create=True)
@patch.object(k8s_client.CoreV1Api, 'create_namespaced_endpoints', mock_namespaced_kind, create=True)
@patch.object(k8s_client.CoreV1Api, 'create_namespaced_service',
Mock(side_effect=[True,
False,
k8s_client.rest.ApiException(409, ''),
k8s_client.rest.ApiException(403, ''),
k8s_client.rest.ApiException(500, ''),
Exception("Unexpected")
]), create=True)
@patch('patroni.dcs.kubernetes.logger.exception')
def test__create_config_service(self, mock_logger_exception):
self.assertIsNotNone(self.k.patch_or_create_config({'foo': 'bar'}))
self.assertIsNotNone(self.k.patch_or_create_config({'foo': 'bar'}))
self.k.patch_or_create_config({'foo': 'bar'})
mock_logger_exception.assert_not_called()
self.k.patch_or_create_config({'foo': 'bar'})
mock_logger_exception.assert_not_called()
self.k.patch_or_create_config({'foo': 'bar'})
mock_logger_exception.assert_called_once()
self.assertEqual(('create_config_service failed',), mock_logger_exception.call_args[0])
mock_logger_exception.reset_mock()
self.k.touch_member({'state': 'running', 'role': 'replica'})
mock_logger_exception.assert_called_once()
self.assertEqual(('create_config_service failed',), mock_logger_exception.call_args[0])
@patch.object(k8s_client.CoreV1Api, 'patch_namespaced_endpoints', mock_namespaced_kind, create=True)
def test_write_leader_optime(self):
self.k.write_leader_optime(12345)
def mock_watch(*args):
return urllib3.HTTPResponse()
class TestCacheBuilder(BaseTestKubernetes):
@patch.object(k8s_client.CoreV1Api, 'list_namespaced_config_map', mock_list_namespaced_config_map, create=True)
@patch('patroni.dcs.kubernetes.ObjectCache._watch', mock_watch)
@patch.object(urllib3.HTTPResponse, 'read_chunked')
def test__build_cache(self, mock_read_chunked):
self.k._mpp = get_mpp({'citus': {'group': 0, 'database': 'postgres'}})
mock_read_chunked.return_value = [json.dumps(
{'type': 'MODIFIED', 'object': {'metadata': {
'name': self.k.config_path, 'resourceVersion': '2', 'annotations': {self.k._CONFIG: 'foo'}}}}
).encode('utf-8'), ('\n' + json.dumps(
{'type': 'DELETED', 'object': {'metadata': {
'name': self.k.config_path, 'resourceVersion': '3'}}}
) + '\n' + json.dumps(
{'type': 'MDIFIED', 'object': {'metadata': {'name': self.k.config_path}}}
) + '\n').encode('utf-8'), b'{"object":{', b'"code":410}}\n']
self.k._kinds._build_cache()
@patch('patroni.dcs.kubernetes.logger.error', Mock(side_effect=SleepException))
@patch('patroni.dcs.kubernetes.ObjectCache._build_cache', Mock(side_effect=Exception))
def test_run(self):
self.assertRaises(SleepException, self.k._pods.run)
@patch('time.sleep', Mock())
def test__list(self):
self.k._pods._func = Mock(side_effect=Exception)
self.assertRaises(Exception, self.k._pods._list)
@patch('patroni.dcs.kubernetes.ObjectCache._watch', Mock(return_value=None))
def test__do_watch(self):
self.assertRaises(AttributeError, self.k._kinds._do_watch, '1')
@patch.object(k8s_client.CoreV1Api, 'list_namespaced_config_map', mock_list_namespaced_config_map, create=True)
@patch('patroni.dcs.kubernetes.ObjectCache._watch', mock_watch)
@patch.object(urllib3.HTTPResponse, 'read_chunked', Mock(return_value=[]))
def test_kill_stream(self):
self.k._kinds.kill_stream()
with patch.object(urllib3.HTTPResponse, 'connection') as mock_connection:
mock_connection.sock.close.side_effect = Exception
self.k._kinds._do_watch('1')
self.k._kinds.kill_stream()
with patch.object(urllib3.HTTPResponse, 'connection', PropertyMock(side_effect=Exception)):
self.k._kinds.kill_stream()
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