| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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. |
| */ |
| |
| package org.apache.atlas.web.service; |
| |
| import org.apache.atlas.AtlasConstants; |
| import org.apache.atlas.AtlasException; |
| import org.apache.atlas.exception.AtlasBaseException; |
| import org.apache.atlas.ha.HAConfiguration; |
| import org.apache.atlas.listener.ActiveStateChangeHandler; |
| import org.apache.commons.configuration.Configuration; |
| import org.apache.curator.framework.recipes.leader.LeaderLatch; |
| import org.mockito.InOrder; |
| import org.mockito.Mock; |
| import org.mockito.MockitoAnnotations; |
| import org.testng.annotations.BeforeMethod; |
| import org.testng.annotations.Test; |
| |
| import java.io.IOException; |
| import java.util.HashSet; |
| import java.util.Set; |
| |
| import static org.mockito.Mockito.*; |
| |
| public class ActiveInstanceElectorServiceTest { |
| |
| @Mock |
| private Configuration configuration; |
| |
| @Mock |
| private CuratorFactory curatorFactory; |
| |
| @Mock |
| private ActiveInstanceState activeInstanceState; |
| |
| @Mock |
| private ServiceState serviceState; |
| |
| @BeforeMethod |
| public void setup() { |
| System.setProperty(AtlasConstants.SYSTEM_PROPERTY_APP_PORT, "21000"); |
| MockitoAnnotations.initMocks(this); |
| } |
| |
| @Test |
| public void testLeaderElectionIsJoinedOnStart() throws Exception { |
| when(configuration.containsKey(HAConfiguration.ATLAS_SERVER_HA_ENABLED_KEY)).thenReturn(true); |
| when(configuration.getBoolean(HAConfiguration.ATLAS_SERVER_HA_ENABLED_KEY)).thenReturn(true); |
| when(configuration.getStringArray(HAConfiguration.ATLAS_SERVER_IDS)).thenReturn(new String[] {"id1"}); |
| when(configuration.getString(HAConfiguration.ATLAS_SERVER_ADDRESS_PREFIX +"id1")).thenReturn("127.0.0.1:21000"); |
| when(configuration.getString( |
| HAConfiguration.ATLAS_SERVER_HA_ZK_ROOT_KEY, HAConfiguration.ATLAS_SERVER_ZK_ROOT_DEFAULT)). |
| thenReturn(HAConfiguration.ATLAS_SERVER_ZK_ROOT_DEFAULT); |
| LeaderLatch leaderLatch = mock(LeaderLatch.class); |
| when(curatorFactory.leaderLatchInstance("id1", HAConfiguration.ATLAS_SERVER_ZK_ROOT_DEFAULT)).thenReturn(leaderLatch); |
| |
| ActiveInstanceElectorService activeInstanceElectorService = |
| new ActiveInstanceElectorService(configuration, new HashSet<ActiveStateChangeHandler>(), curatorFactory, |
| activeInstanceState, serviceState); |
| activeInstanceElectorService.start(); |
| |
| verify(leaderLatch).start(); |
| } |
| |
| @Test |
| public void testListenerIsAddedForActiveInstanceCallbacks() throws Exception { |
| when(configuration.containsKey(HAConfiguration.ATLAS_SERVER_HA_ENABLED_KEY)).thenReturn(true); |
| when(configuration.getBoolean(HAConfiguration.ATLAS_SERVER_HA_ENABLED_KEY)).thenReturn(true); |
| when(configuration.getStringArray(HAConfiguration.ATLAS_SERVER_IDS)).thenReturn(new String[] {"id1"}); |
| when(configuration.getString(HAConfiguration.ATLAS_SERVER_ADDRESS_PREFIX +"id1")).thenReturn("127.0.0.1:21000"); |
| when(configuration.getString( |
| HAConfiguration.ATLAS_SERVER_HA_ZK_ROOT_KEY, HAConfiguration.ATLAS_SERVER_ZK_ROOT_DEFAULT)). |
| thenReturn(HAConfiguration.ATLAS_SERVER_ZK_ROOT_DEFAULT); |
| |
| LeaderLatch leaderLatch = mock(LeaderLatch.class); |
| when(curatorFactory.leaderLatchInstance("id1", HAConfiguration.ATLAS_SERVER_ZK_ROOT_DEFAULT)).thenReturn(leaderLatch); |
| |
| ActiveInstanceElectorService activeInstanceElectorService = |
| new ActiveInstanceElectorService(configuration, new HashSet<ActiveStateChangeHandler>(), curatorFactory, |
| activeInstanceState, serviceState); |
| activeInstanceElectorService.start(); |
| |
| verify(leaderLatch).addListener(activeInstanceElectorService); |
| } |
| |
| @Test |
| public void testLeaderElectionIsNotStartedIfNotInHAMode() throws AtlasException { |
| when(configuration.getBoolean(HAConfiguration.ATLAS_SERVER_HA_ENABLED_KEY, false)).thenReturn(false); |
| |
| ActiveInstanceElectorService activeInstanceElectorService = |
| new ActiveInstanceElectorService(configuration, new HashSet<ActiveStateChangeHandler>(), curatorFactory, |
| activeInstanceState, serviceState); |
| activeInstanceElectorService.start(); |
| |
| verifyZeroInteractions(curatorFactory); |
| } |
| |
| @Test |
| public void testLeaderElectionIsLeftOnStop() throws IOException, AtlasException { |
| when(configuration.containsKey(HAConfiguration.ATLAS_SERVER_HA_ENABLED_KEY)).thenReturn(true); |
| when(configuration.getBoolean(HAConfiguration.ATLAS_SERVER_HA_ENABLED_KEY)).thenReturn(true); |
| when(configuration.getStringArray(HAConfiguration.ATLAS_SERVER_IDS)).thenReturn(new String[] {"id1"}); |
| when(configuration.getString(HAConfiguration.ATLAS_SERVER_ADDRESS_PREFIX +"id1")).thenReturn("127.0.0.1:21000"); |
| when(configuration.getString( |
| HAConfiguration.ATLAS_SERVER_HA_ZK_ROOT_KEY, HAConfiguration.ATLAS_SERVER_ZK_ROOT_DEFAULT)). |
| thenReturn(HAConfiguration.ATLAS_SERVER_ZK_ROOT_DEFAULT); |
| |
| LeaderLatch leaderLatch = mock(LeaderLatch.class); |
| when(curatorFactory.leaderLatchInstance("id1", HAConfiguration.ATLAS_SERVER_ZK_ROOT_DEFAULT)).thenReturn(leaderLatch); |
| |
| ActiveInstanceElectorService activeInstanceElectorService = |
| new ActiveInstanceElectorService(configuration, new HashSet<ActiveStateChangeHandler>(), curatorFactory, |
| activeInstanceState, serviceState); |
| activeInstanceElectorService.start(); |
| activeInstanceElectorService.stop(); |
| |
| verify(leaderLatch).close(); |
| } |
| |
| @Test |
| public void testCuratorFactoryIsClosedOnStop() throws AtlasException { |
| when(configuration.containsKey(HAConfiguration.ATLAS_SERVER_HA_ENABLED_KEY)).thenReturn(true); |
| when(configuration.getBoolean(HAConfiguration.ATLAS_SERVER_HA_ENABLED_KEY)).thenReturn(true); |
| when(configuration.getStringArray(HAConfiguration.ATLAS_SERVER_IDS)).thenReturn(new String[] {"id1"}); |
| when(configuration.getString(HAConfiguration.ATLAS_SERVER_ADDRESS_PREFIX +"id1")).thenReturn("127.0.0.1:21000"); |
| when(configuration.getString( |
| HAConfiguration.ATLAS_SERVER_HA_ZK_ROOT_KEY, HAConfiguration.ATLAS_SERVER_ZK_ROOT_DEFAULT)). |
| thenReturn(HAConfiguration.ATLAS_SERVER_ZK_ROOT_DEFAULT); |
| |
| LeaderLatch leaderLatch = mock(LeaderLatch.class); |
| when(curatorFactory.leaderLatchInstance("id1", HAConfiguration.ATLAS_SERVER_ZK_ROOT_DEFAULT)).thenReturn(leaderLatch); |
| |
| ActiveInstanceElectorService activeInstanceElectorService = |
| new ActiveInstanceElectorService(configuration, new HashSet<ActiveStateChangeHandler>(), curatorFactory, |
| activeInstanceState, serviceState); |
| activeInstanceElectorService.start(); |
| activeInstanceElectorService.stop(); |
| |
| verify(curatorFactory).close(); |
| } |
| |
| @Test |
| public void testNoActionOnStopIfHAModeIsDisabled() { |
| |
| when(configuration.getBoolean(HAConfiguration.ATLAS_SERVER_HA_ENABLED_KEY, false)).thenReturn(false); |
| |
| ActiveInstanceElectorService activeInstanceElectorService = |
| new ActiveInstanceElectorService(configuration, new HashSet<ActiveStateChangeHandler>(), curatorFactory, |
| activeInstanceState, serviceState); |
| activeInstanceElectorService.stop(); |
| |
| verifyZeroInteractions(curatorFactory); |
| } |
| |
| @Test |
| public void testRegisteredHandlersAreNotifiedWhenInstanceIsActive() throws AtlasException { |
| when(configuration.containsKey(HAConfiguration.ATLAS_SERVER_HA_ENABLED_KEY)).thenReturn(true); |
| when(configuration.getBoolean(HAConfiguration.ATLAS_SERVER_HA_ENABLED_KEY)).thenReturn(true); |
| when(configuration.getStringArray(HAConfiguration.ATLAS_SERVER_IDS)).thenReturn(new String[] {"id1"}); |
| when(configuration.getString(HAConfiguration.ATLAS_SERVER_ADDRESS_PREFIX +"id1")).thenReturn("127.0.0.1:21000"); |
| when(configuration.getString( |
| HAConfiguration.ATLAS_SERVER_HA_ZK_ROOT_KEY, HAConfiguration.ATLAS_SERVER_ZK_ROOT_DEFAULT)). |
| thenReturn(HAConfiguration.ATLAS_SERVER_ZK_ROOT_DEFAULT); |
| |
| LeaderLatch leaderLatch = mock(LeaderLatch.class); |
| when(curatorFactory.leaderLatchInstance("id1", HAConfiguration.ATLAS_SERVER_ZK_ROOT_DEFAULT)).thenReturn(leaderLatch); |
| |
| Set<ActiveStateChangeHandler> changeHandlers = new HashSet<>(); |
| final ActiveStateChangeHandler handler1 = mock(ActiveStateChangeHandler.class); |
| final ActiveStateChangeHandler handler2 = mock(ActiveStateChangeHandler.class); |
| |
| changeHandlers.add(handler1); |
| changeHandlers.add(handler2); |
| |
| ActiveInstanceElectorService activeInstanceElectorService = |
| new ActiveInstanceElectorService(configuration, changeHandlers, curatorFactory, |
| activeInstanceState, serviceState); |
| activeInstanceElectorService.start(); |
| activeInstanceElectorService.isLeader(); |
| |
| verify(handler1).instanceIsActive(); |
| verify(handler2).instanceIsActive(); |
| } |
| |
| @Test |
| public void testSharedStateIsUpdatedWhenInstanceIsActive() throws Exception { |
| when(configuration.containsKey(HAConfiguration.ATLAS_SERVER_HA_ENABLED_KEY)).thenReturn(true); |
| when(configuration.getBoolean(HAConfiguration.ATLAS_SERVER_HA_ENABLED_KEY)).thenReturn(true); |
| when(configuration.getStringArray(HAConfiguration.ATLAS_SERVER_IDS)).thenReturn(new String[] {"id1"}); |
| when(configuration.getString(HAConfiguration.ATLAS_SERVER_ADDRESS_PREFIX +"id1")).thenReturn("127.0.0.1:21000"); |
| when(configuration.getString( |
| HAConfiguration.ATLAS_SERVER_HA_ZK_ROOT_KEY, HAConfiguration.ATLAS_SERVER_ZK_ROOT_DEFAULT)). |
| thenReturn(HAConfiguration.ATLAS_SERVER_ZK_ROOT_DEFAULT); |
| |
| LeaderLatch leaderLatch = mock(LeaderLatch.class); |
| when(curatorFactory.leaderLatchInstance("id1", HAConfiguration.ATLAS_SERVER_ZK_ROOT_DEFAULT)).thenReturn(leaderLatch); |
| |
| ActiveInstanceElectorService activeInstanceElectorService = |
| new ActiveInstanceElectorService(configuration, new HashSet<ActiveStateChangeHandler>(), curatorFactory, |
| activeInstanceState, serviceState); |
| |
| activeInstanceElectorService.start(); |
| activeInstanceElectorService.isLeader(); |
| |
| verify(activeInstanceState).update("id1"); |
| } |
| |
| @Test |
| public void testRegisteredHandlersAreNotifiedOfPassiveWhenStateUpdateFails() throws Exception { |
| when(configuration.containsKey(HAConfiguration.ATLAS_SERVER_HA_ENABLED_KEY)).thenReturn(true); |
| when(configuration.getBoolean(HAConfiguration.ATLAS_SERVER_HA_ENABLED_KEY)).thenReturn(true); |
| when(configuration.getStringArray(HAConfiguration.ATLAS_SERVER_IDS)).thenReturn(new String[] {"id1"}); |
| when(configuration.getString(HAConfiguration.ATLAS_SERVER_ADDRESS_PREFIX +"id1")).thenReturn("127.0.0.1:21000"); |
| when(configuration.getString( |
| HAConfiguration.ATLAS_SERVER_HA_ZK_ROOT_KEY, HAConfiguration.ATLAS_SERVER_ZK_ROOT_DEFAULT)). |
| thenReturn(HAConfiguration.ATLAS_SERVER_ZK_ROOT_DEFAULT); |
| |
| |
| LeaderLatch leaderLatch = mock(LeaderLatch.class); |
| when(curatorFactory.leaderLatchInstance("id1", HAConfiguration.ATLAS_SERVER_ZK_ROOT_DEFAULT)).thenReturn(leaderLatch); |
| |
| Set<ActiveStateChangeHandler> changeHandlers = new HashSet<>(); |
| final ActiveStateChangeHandler handler1 = mock(ActiveStateChangeHandler.class); |
| final ActiveStateChangeHandler handler2 = mock(ActiveStateChangeHandler.class); |
| |
| changeHandlers.add(handler1); |
| changeHandlers.add(handler2); |
| |
| doThrow(new AtlasBaseException()).when(activeInstanceState).update("id1"); |
| |
| ActiveInstanceElectorService activeInstanceElectorService = |
| new ActiveInstanceElectorService(configuration, changeHandlers, curatorFactory, |
| activeInstanceState, serviceState); |
| activeInstanceElectorService.start(); |
| activeInstanceElectorService.isLeader(); |
| |
| verify(handler1).instanceIsPassive(); |
| verify(handler2).instanceIsPassive(); |
| } |
| |
| @Test |
| public void testElectionIsRejoinedWhenStateUpdateFails() throws Exception { |
| when(configuration.containsKey(HAConfiguration.ATLAS_SERVER_HA_ENABLED_KEY)).thenReturn(true); |
| when(configuration.getBoolean(HAConfiguration.ATLAS_SERVER_HA_ENABLED_KEY)).thenReturn(true); |
| when(configuration.getStringArray(HAConfiguration.ATLAS_SERVER_IDS)).thenReturn(new String[] {"id1"}); |
| when(configuration.getString(HAConfiguration.ATLAS_SERVER_ADDRESS_PREFIX +"id1")).thenReturn("127.0.0.1:21000"); |
| when(configuration.getString( |
| HAConfiguration.ATLAS_SERVER_HA_ZK_ROOT_KEY, HAConfiguration.ATLAS_SERVER_ZK_ROOT_DEFAULT)). |
| thenReturn(HAConfiguration.ATLAS_SERVER_ZK_ROOT_DEFAULT); |
| |
| |
| LeaderLatch leaderLatch = mock(LeaderLatch.class); |
| when(curatorFactory.leaderLatchInstance("id1", HAConfiguration.ATLAS_SERVER_ZK_ROOT_DEFAULT)).thenReturn(leaderLatch); |
| |
| doThrow(new AtlasBaseException()).when(activeInstanceState).update("id1"); |
| |
| ActiveInstanceElectorService activeInstanceElectorService = |
| new ActiveInstanceElectorService(configuration, new HashSet<ActiveStateChangeHandler>(), curatorFactory, |
| activeInstanceState, serviceState); |
| |
| activeInstanceElectorService.start(); |
| activeInstanceElectorService.isLeader(); |
| |
| InOrder inOrder = inOrder(leaderLatch, curatorFactory); |
| inOrder.verify(leaderLatch).close(); |
| inOrder.verify(curatorFactory).leaderLatchInstance("id1", HAConfiguration.ATLAS_SERVER_ZK_ROOT_DEFAULT); |
| inOrder.verify(leaderLatch).addListener(activeInstanceElectorService); |
| inOrder.verify(leaderLatch).start(); |
| } |
| |
| @Test |
| public void testRegisteredHandlersAreNotifiedOfPassiveWhenInstanceIsPassive() throws AtlasException { |
| when(configuration.containsKey(HAConfiguration.ATLAS_SERVER_HA_ENABLED_KEY)).thenReturn(true); |
| when(configuration.getBoolean(HAConfiguration.ATLAS_SERVER_HA_ENABLED_KEY)).thenReturn(true); |
| when(configuration.getStringArray(HAConfiguration.ATLAS_SERVER_IDS)).thenReturn(new String[] {"id1"}); |
| when(configuration.getString(HAConfiguration.ATLAS_SERVER_ADDRESS_PREFIX +"id1")).thenReturn("127.0.0.1:21000"); |
| when(configuration.getString( |
| HAConfiguration.ATLAS_SERVER_HA_ZK_ROOT_KEY, HAConfiguration.ATLAS_SERVER_ZK_ROOT_DEFAULT)). |
| thenReturn(HAConfiguration.ATLAS_SERVER_ZK_ROOT_DEFAULT); |
| |
| |
| LeaderLatch leaderLatch = mock(LeaderLatch.class); |
| when(curatorFactory.leaderLatchInstance("id1", HAConfiguration.ATLAS_SERVER_ZK_ROOT_DEFAULT)).thenReturn(leaderLatch); |
| |
| Set<ActiveStateChangeHandler> changeHandlers = new HashSet<>(); |
| final ActiveStateChangeHandler handler1 = mock(ActiveStateChangeHandler.class); |
| final ActiveStateChangeHandler handler2 = mock(ActiveStateChangeHandler.class); |
| |
| changeHandlers.add(handler1); |
| changeHandlers.add(handler2); |
| |
| ActiveInstanceElectorService activeInstanceElectorService = |
| new ActiveInstanceElectorService(configuration, changeHandlers, curatorFactory, |
| activeInstanceState, serviceState); |
| activeInstanceElectorService.start(); |
| activeInstanceElectorService.notLeader(); |
| |
| verify(handler1).instanceIsPassive(); |
| verify(handler2).instanceIsPassive(); |
| } |
| |
| @Test |
| public void testActiveStateSetOnBecomingLeader() { |
| ActiveInstanceElectorService activeInstanceElectorService = |
| new ActiveInstanceElectorService(configuration, new HashSet<ActiveStateChangeHandler>(), |
| curatorFactory, activeInstanceState, serviceState); |
| |
| activeInstanceElectorService.isLeader(); |
| |
| InOrder inOrder = inOrder(serviceState); |
| inOrder.verify(serviceState).becomingActive(); |
| inOrder.verify(serviceState).setActive(); |
| } |
| |
| @Test |
| public void testPassiveStateSetOnLoosingLeadership() { |
| ActiveInstanceElectorService activeInstanceElectorService = |
| new ActiveInstanceElectorService(configuration, new HashSet<ActiveStateChangeHandler>(), |
| curatorFactory, activeInstanceState, serviceState); |
| |
| activeInstanceElectorService.notLeader(); |
| |
| InOrder inOrder = inOrder(serviceState); |
| inOrder.verify(serviceState).becomingPassive(); |
| inOrder.verify(serviceState).setPassive(); |
| } |
| |
| @Test |
| public void testPassiveStateSetIfActivationFails() throws Exception { |
| when(configuration.containsKey(HAConfiguration.ATLAS_SERVER_HA_ENABLED_KEY)).thenReturn(true); |
| when(configuration.getBoolean(HAConfiguration.ATLAS_SERVER_HA_ENABLED_KEY)).thenReturn(true); |
| when(configuration.getStringArray(HAConfiguration.ATLAS_SERVER_IDS)).thenReturn(new String[] {"id1"}); |
| when(configuration.getString(HAConfiguration.ATLAS_SERVER_ADDRESS_PREFIX +"id1")).thenReturn("127.0.0.1:21000"); |
| when(configuration.getString( |
| HAConfiguration.ATLAS_SERVER_HA_ZK_ROOT_KEY, HAConfiguration.ATLAS_SERVER_ZK_ROOT_DEFAULT)). |
| thenReturn(HAConfiguration.ATLAS_SERVER_ZK_ROOT_DEFAULT); |
| |
| |
| LeaderLatch leaderLatch = mock(LeaderLatch.class); |
| when(curatorFactory.leaderLatchInstance("id1", HAConfiguration.ATLAS_SERVER_ZK_ROOT_DEFAULT)).thenReturn(leaderLatch); |
| |
| doThrow(new AtlasBaseException()).when(activeInstanceState).update("id1"); |
| |
| ActiveInstanceElectorService activeInstanceElectorService = |
| new ActiveInstanceElectorService(configuration, new HashSet<ActiveStateChangeHandler>(), |
| curatorFactory, activeInstanceState, serviceState); |
| activeInstanceElectorService.start(); |
| activeInstanceElectorService.isLeader(); |
| |
| InOrder inOrder = inOrder(serviceState); |
| inOrder.verify(serviceState).becomingActive(); |
| inOrder.verify(serviceState).becomingPassive(); |
| inOrder.verify(serviceState).setPassive(); |
| } |
| } |