java有类似于ClientConfig的东西。Hazelcast 4.2中的SetConnectionAttentileLimit（）？

Question

我有一个场景，我想用Java实例化一个Hazelcast客户机，如果Hazelcast客户机无法连接到它的集群，它应该被关闭，并且应该有一个后备代码。因此，让我们假设Hazelcast客户是一种应该拥有的，但不是必须拥有的

在版本3中。在Hazelcast的x中，我有机会在Hazelcast 4.2中调用HazelcastClientConfig.setConnectionAttemptLimit(1);，我不知道如何建立相同的场景。没有方法ClientConfig.setConnectionAttemptLimit(...);或类似的东西

有人知道如何将初始连接尝试设置为1吗

我可能可以实现如下代码：

// ...

    ClientConfig clientConfig = new ClientConfig();
    
    clientConfig.getNetworkConfig().addAddress(String.format("%s:%s", hazelcastServerHost, hazelcastServerPort));
    
    clientConfig.getConnectionStrategyConfig().setAsyncStart(true);
    
        // The following code  is a really dirty solution in case that HC client cannot connect to it's cluster.
        // Only works with clientConfig.getConnectionStrategyConfig().setAsyncStart(true);
        
        try {
            Thread.sleep(5000); // Let's assume that a HC instance should probably be connected in 5 seconds.
        } catch (InterruptedException e) {
            log.error(e.getMessage());
            e.printStackTrace();
        }
        
        try {
            hcClient.getMap("DUMMY"); // perform a dummy access in order to receive a HazelcastClientOfflineException if the client is not connected.
        } catch (HazelcastClientOfflineException e){
            hcClient.shutdown();
        }
        
        return hcClient;

但我觉得这比脏的多

Answer 1

https://docs.hazelcast.com/imdg/4.2/migration-guides#changes-in-client-connection-retry-mechanism

已删除连接尝试周期和连接尝试限制配置。相反，连接的元素会重试

要实现与之前相同的目标，可以执行以下操作：

ClientConfig config = new ClientConfig();
ClientConnectionStrategyConfig connectionStrategyConfig = 
config.getConnectionStrategyConfig()
      .getConnectionRetryConfig()
      .setClusterConnectTimeoutMillis(5000);

使用此设置，如果客户机在5秒内无法连接到群集，它将关闭，与使用connection-attempt-limit和connection-attempt-period的旧设置类似。有关详细信息，请参阅以下链接 https://docs.hazelcast.com/imdg/4.2/clients/java#configuring-client-connection-retry