

通过dubbo-compiler的插件生成了接口，会自动生成xxxAsync()方法，但是它只是通过CompletableFuture.completedFuture()包装了同步方法，它仍然会阻塞consumer的业务线程。这么实现的目的是什么？

![image](https://user-images.githubusercontent.com/18373569/216303859-4c8fe6e5-428b-417c-baa5-df4aa444719c.png)

![image](https://user-images.githubusercontent.com/18373569/216304057-e564e268-14e6-40e3-8244-7380fd9c9c85.png)


## Ask your question here
我当前使用dubbo 3.1.4的triple协议(同时使用了IDL+protobuf)，想提供CompletableFuture<Result>返回值的异步调用，应该怎么做？

客户端如果不使用proxy=“nativestub”，会抛出以下错误：

This serialization only support google protobuf messages, but the actual input type is :java.util.concurrent.CompletableFuture

客户端如果使用proxy=“nativestub”，调用kickOffDeviceAsync(),实际上会调用CompletableFuture.completedFuture(kickOffDevice(request));.如此就会造成阻塞了，没有达到异步的目的





import org.apache.dubbo.rpc.protocol.tri.ClassLoadUtil;
import org.apache.dubbo.rpc.protocol.tri.TripleConstant;
import org.apache.dubbo.rpc.protocol.tri.TripleHeaderEnum;
import org.apache.dubbo.rpc.protocol.tri.compressor.Compressor;
import org.apache.dubbo.rpc.protocol.tri.compressor.Identity;
import org.apache.dubbo.rpc.protocol.tri.observer.ServerCallToObserverAdapter;
import org.apache.dubbo.rpc.protocol.tri.stream.ServerStream;
import org.apache.dubbo.rpc.protocol.tri.stream.StreamUtils;
import io.netty.handler.codec.http.HttpHeaderNames;
import io.netty.handler.codec.http.HttpResponseStatus;
import io.netty.handler.codec.http2.DefaultHttp2Headers;
import io.netty.util.concurrent.Future;
import java.io.IOException;
import java.util.Map;
import java.util.Objects;
import java.util.concurrent.Executor;
import java.util.concurrent.TimeUnit;
import static org.apache.dubbo.common.constants.LoggerCodeConstants.PROTOCOL_FAILED_CREATE_STREAM_TRIPLE;
import static org.apache.dubbo.common.constants.LoggerCodeConstants.PROTOCOL_FAILED_PARSE;
import static org.apache.dubbo.common.constants.LoggerCodeConstants.PROTOCOL_FAILED_SERIALIZE_TRIPLE;
import static org.apache.dubbo.common.constants.LoggerCodeConstants.PROTOCOL_FAILED_REQUEST;
public abstract class AbstractServerCall implements ServerCall, ServerStream.Listener {
    public static final String REMOTE_ADDRESS_KEY = "tri.remote.address";
    private static final ErrorTypeAwareLogger LOGGER = LoggerFactory.getErrorTypeAwareLogger(AbstractServerCall.class);
    public final Invoker<?> invoker;
    public final FrameworkModel frameworkModel;
    public final ServerStream stream;
    public final Executor executor;
    public final String methodName;
    public final String serviceName;