dubbo CallStreamObserver 源码

2022-10-20
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dubbo CallStreamObserver 代码

文件路径：/dubbo-rpc/dubbo-rpc-triple/src/main/java/org/apache/dubbo/rpc/protocol/tri/observer/CallStreamObserver.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.observer;

import org.apache.dubbo.common.stream.StreamObserver;
import org.apache.dubbo.rpc.protocol.tri.compressor.Compressor;

public interface CallStreamObserver<T> extends StreamObserver<T> {


    /**
     * Requests the peer to produce {@code count} more messages to be delivered to the 'inbound'
     * {@link StreamObserver}.
     *
     * <p>This method is safe to call from multiple threads without external synchronization.
     *
     * @param count more messages
     */
    void request(int count);

    /**
     * Sets the compression algorithm to use for the call
     * <p>
     * For stream set compression needs to determine whether the metadata has been sent, and carry
     * on corresponding processing
     *
     * @param compression {@link Compressor}
     */
    void setCompression(String compression);

    /**
     * Swaps to manual flow control where no message will be delivered to {@link
     * StreamObserver#onNext(Object)} unless it is {@link #request request()}ed. Since {@code
     * request()} may not be called before the call is started, a number of initial requests may be
     * specified.
     */
    void disableAutoFlowControl();

}

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所属分类： 后端技术
本文标签： Java
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