dubbo ServerCall 源码
dubbo ServerCall 代码
文件路径：/dubbo-rpc/dubbo-rpc-triple/src/main/java/org/apache/dubbo/rpc/protocol/tri/call/ServerCall.java
/*
* 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.dubbo.rpc.protocol.tri.call;
import org.apache.dubbo.rpc.TriRpcStatus;
import java.util.Map;
/**
* ServerCall manipulates server details of a RPC call. Request messages are acquired by {@link
* Listener}. Backpressure is supported by {@link #request(int)}.Response messages are sent by
* {@link ServerCall#sendMessage(Object)}.
*/
public interface ServerCall {
/**
* A listener to receive request messages.
*/
interface Listener {
/**
* Callback when a request message is received.
*
* @param message message received
*/
void onMessage(Object message);
/**
* @param status when the call is canceled.
*/
void onCancel(TriRpcStatus status);
/**
* Request completed.
*/
void onComplete();
}
/**
* Send message to client
*
* @param message message to send
*/
void sendMessage(Object message);
/**
* Request more request data from the client.
*
* @param numMessages max number of messages
*/
void request(int numMessages);
/**
* Close the call.
*
* @param status status of the call to send to the client
* @param responseAttrs response attachments
*/
void close(TriRpcStatus status, Map<String, Object> responseAttrs);
}
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