| /* |
| * 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.geode.distributed.internal; |
| |
| import static org.apache.geode.test.awaitility.GeodeAwaitility.await; |
| import static org.assertj.core.api.Assertions.assertThat; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.Properties; |
| |
| import org.junit.After; |
| import org.junit.Before; |
| import org.junit.Rule; |
| import org.junit.Test; |
| |
| import org.apache.geode.distributed.ConfigurationProperties; |
| import org.apache.geode.distributed.internal.membership.InternalDistributedMember; |
| import org.apache.geode.test.dunit.rules.ClusterStartupRule; |
| import org.apache.geode.test.dunit.rules.MemberVM; |
| import org.apache.geode.test.junit.rules.ConcurrencyRule; |
| |
| public class ElderMemberDistributedTest { |
| public List<MemberVM> locators = new ArrayList<>(); |
| |
| @Rule |
| public ConcurrencyRule concurrencyRule = new ConcurrencyRule(); |
| |
| @Rule |
| public ClusterStartupRule clusterStartupRule = new ClusterStartupRule(); |
| |
| @Before |
| public void before() { |
| Properties properties = new Properties(); |
| properties.setProperty(ConfigurationProperties.ENABLE_NETWORK_PARTITION_DETECTION, "false"); |
| properties.setProperty(ConfigurationProperties.ENABLE_CLUSTER_CONFIGURATION, "false"); |
| locators.add(clusterStartupRule.startLocatorVM(0, properties)); |
| locators.add(clusterStartupRule.startLocatorVM(1, properties, locators.get(0).getPort())); |
| locators.add(clusterStartupRule.startLocatorVM(2, properties, locators.get(0).getPort())); |
| } |
| |
| @After |
| public void after() { |
| locators.clear(); |
| } |
| |
| @Test |
| public void oldestMemberIsElder() { |
| final InternalDistributedMember elderId = locators.get(0).invoke( |
| ElderMemberDistributedTest::assertIsElderAndGetId); |
| |
| locators.get(1).invoke(() -> elderConsistencyCheck(elderId)); |
| |
| locators.get(2).invoke(() -> elderConsistencyCheck(elderId)); |
| |
| clusterStartupRule.crashVM(0); |
| |
| final InternalDistributedMember newElderId = locators.get(1).invoke( |
| ElderMemberDistributedTest::assertIsElderAndGetId); |
| locators.get(2).invoke(() -> elderConsistencyCheck(newElderId)); |
| } |
| |
| @Test |
| public void elderIsCorrectAfterKillingMultipleLocators() throws InterruptedException { |
| locators.add(clusterStartupRule.startLocatorVM(3, locators.get(0).getPort())); |
| |
| // check that all members agree on elder |
| final InternalDistributedMember elderId = |
| locators.get(0).invoke(ElderMemberDistributedTest::assertIsElderAndGetId); |
| for (int i = 1; i < locators.size(); i++) { |
| locators.get(i).invoke(() -> elderConsistencyCheck(elderId)); |
| } |
| |
| // kill several members at the same time |
| concurrencyRule.add(() -> { |
| clusterStartupRule.stop(0); |
| |
| return null; |
| }); |
| |
| concurrencyRule.add(() -> { |
| clusterStartupRule.stop(1); |
| return null; |
| }); |
| |
| concurrencyRule.executeInParallel(); |
| |
| InternalDistributedMember newElderId = |
| locators.get(2).invoke(ElderMemberDistributedTest::assertIsElderAndGetId); |
| assertThat(newElderId).isNotEqualByComparingTo(elderId); |
| locators.get(3).invoke(() -> elderConsistencyCheck(newElderId)); |
| } |
| |
| private static InternalDistributedMember assertIsElderAndGetId() { |
| DistributionManager distributionManager = |
| ClusterStartupRule.getCache().getInternalDistributedSystem().getDistributionManager(); |
| await() |
| .untilAsserted(() -> assertThat(distributionManager.isElder()).isTrue()); |
| return distributionManager.getElderId(); |
| } |
| |
| private static void elderConsistencyCheck(InternalDistributedMember elderId) { |
| ClusterDistributionManager distributionManager = |
| (ClusterDistributionManager) ClusterStartupRule.getCache().getInternalDistributedSystem() |
| .getDistributionManager(); |
| assertThat(distributionManager.isElder()).isFalse(); |
| await("Choosing elder stopped for too long") |
| .until(() -> { |
| distributionManager.waitForElder(elderId); |
| return true; |
| }); |
| assertThat(distributionManager.getElderId()).isEqualTo(elderId); |
| } |
| } |