Question

如何使用Hazelcast执行spring boot应用程序的集成测试，因为运行时所有测试都获得了hazelcast.core.DuplicateInstanceNameException？

我使用Spring Boot 2.0.0.RC1 和Hazelcast 3.9.2

使用java配置进行hazelcast：

@Bean
public Config getHazelCastServerConfig() {
    final Config config = new Config();
    config.setInstanceName(hzInstance);
    config.getGroupConfig().setName(hzGroupName).setPassword(hzGroupPassword);

    final ManagementCenterConfig managementCenterConfig = config.getManagementCenterConfig();
    managementCenterConfig.setEnabled(true);
    managementCenterConfig.setUrl(mancenter);

    final MapConfig mapConfig = new MapConfig();
    mapConfig.setName(mapName);
    mapConfig.setEvictionPolicy(EvictionPolicy.NONE);
    mapConfig.setTimeToLiveSeconds(0);
    mapConfig.setMaxIdleSeconds(0);

    config.getScheduledExecutorConfig(scheduler)
            .setPoolSize(16)
            .setCapacity(100)
            .setDurability(1);

    final NetworkConfig networkConfig = config.getNetworkConfig();
    networkConfig.setPort(5701);
    networkConfig.setPortAutoIncrement(true).setPortCount(30);

    final JoinConfig joinConfig = networkConfig.getJoin();
    joinConfig.getMulticastConfig().setEnabled(false);
    joinConfig.getAwsConfig().setEnabled(false);

    final TcpIpConfig tcpIpConfig = joinConfig.getTcpIpConfig();
    tcpIpConfig.addMember(memberOne)
            .addMember(memberTwo);
    tcpIpConfig.setEnabled(true);

    return config;
}

@Bean
public HazelcastInstance getHazelCastServerInstance() {
    final HazelcastInstance hazelcastInstance = Hazelcast.newHazelcastInstance(getHazelCastServerConfig());
    hazelcastInstance.getClientService().addClientListener(new ClientListener() {
        @Override
        public void clientConnected(Client client) {
            System.out.println(String.format("Connected %s %s %s", client.getClientType(), client.getUuid(), client.getSocketAddress()));
            log.info(String.format("Connected %s %s %s", client.getClientType(), client.getUuid(), client.getSocketAddress()));
        }

        @Override
        public void clientDisconnected(Client client) {
            System.out.println(String.format("Disconnected %s %s %s", client.getClientType(), client.getUuid(), client.getSocketAddress()));
            log.info(String.format("Disconnected %s %s %s", client.getClientType(), client.getUuid(), client.getSocketAddress()));
        }
    });

    return hazelcastInstance;
}

我有简单的测试：

@RunWith(SpringRunner.class)
@SpringBootTest(classes = UpaSdcApplication.class)
@ActiveProfiles("test")
 public class CheckEndpoints {

@Autowired
private ApplicationContext context;

private static final String HEALTH_ENDPOINT = "/actuator/health";

private static WebTestClient testClient;

@Before
public void init() {
    testClient = org.springframework.test.web.reactive.server.WebTestClient
            .bindToApplicationContext(context)
            .configureClient()
            .filter(basicAuthentication())
            .build();
}

@Test
public void testHealth(){
    testClient.get().uri(HEALTH_ENDPOINT).accept(MediaType.APPLICATION_JSON)
            .exchange()
            .expectStatus()
            .isOk()
            .expectBody()
            .json("{\"status\": \"UP\"}");
}
}

如果与其他测试分开运行测试类 - 它会执行正常并通过。如果用其他测试运行 - 获得异常：

Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.hazelcast.core.HazelcastInstance]: Factory method 'getHazelCastServerInstance' threw exception; nested exception is com.hazelcast.core.DuplicateInstanceNameException: HazelcastInstance with name 'counter-instance' already exists!
    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:185)
    at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:579)
    ... 91 more
Caused by: com.hazelcast.core.DuplicateInstanceNameException: HazelcastInstance with name 'counter-instance' already exists!
    at com.hazelcast.instance.HazelcastInstanceFactory.newHazelcastInstance(HazelcastInstanceFactory.java:170)
    at com.hazelcast.instance.HazelcastInstanceFactory.newHazelcastInstance(HazelcastInstanceFactory.java:124)
    at com.hazelcast.core.Hazelcast.newHazelcastInstance(Hazelcast.java:58)
    at net.kyivstar.upa.sdc.config.HazelcastConfiguration.getHazelCastServerInstance(HazelcastConfiguration.java:84)
    at net.kyivstar.upa.sdc.config.HazelcastConfiguration$$EnhancerBySpringCGLIB$$c7da65f3.CGLIB$getHazelCastServerInstance$0(<generated>)
    at net.kyivstar.upa.sdc.config.HazelcastConfiguration$$EnhancerBySpringCGLIB$$c7da65f3$$FastClassBySpringCGLIB$$b920d5ef.invoke(<generated>)

你如何解决这个问题？你如何运行集成测试？

Answer 1

instanceName配置元素用于创建命名的Hazelcast成员，并且对于JVM中的每个Hazelcast实例应该是唯一的。在您的情况下，您应该为同一JVM中的每个HazelcastInstance bean创建设置不同的实例名称，或者如果您不使用实例名称调用实例，则可以完全删除instanceName配置

Answer 2

运行测试时遇到了相同的问题。在我的情况下，原因是，弹簧测试框架试图启动新的上下文，同时保留旧的上下文-从而试图创建另一个具有相同名称的hazelcast实例，而一个实例已经在缓存的上下文中。

一旦TestContext框架加载了ApplicationContext（或 WebApplicationContext）进行测试，该上下文被缓存并重用对于所有声明相同唯一上下文的后续测试在同一测试套件中进行配置。

阅读here，以了解有关Spring Test Framework如何管理测试上下文的更多信息。我目前正在解决该问题，稍后再发布。我可以看到的一种可能的解决方案是在每次使用@DirtiesContext(classMode = DirtiesContext.ClassMode.AFTER_CLASS)进行测试后都删除测试上下文，但这在性能方面非常昂贵。

Answer 3

我遇到了同样的问题，我通过检查实例是否已经存在来解决它：

@Bean
public CacheManager cacheManager() {
    HazelcastInstance existingInstance = Hazelcast.getHazelcastInstanceByName(CACHE_INSTANCE_NAME);
    HazelcastInstance hazelcastInstance = null != existingInstance 
         ? existingInstance                                                                       
         : Hazelcast.newHazelcastInstance(hazelCastConfig());
    return new HazelcastCacheManager(hazelcastInstance);
}

您可以看到其余的代码here。

运行spring boot测试时遇到hazelcast.core.DuplicateInstanceNameException

3 个答案: