alluxio.worker.netty.PipelineHandler.java Source code

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Here is the source code for alluxio.worker.netty.PipelineHandler.java

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/*
 * The Alluxio Open Foundation licenses this work under the Apache License, version 2.0
 * (the "License"). You may not use this work except in compliance with the License, which is
 * available at www.apache.org/licenses/LICENSE-2.0
 *
 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
 * either express or implied, as more fully set forth in the License.
 *
 * See the NOTICE file distributed with this work for information regarding copyright ownership.
 */

package alluxio.worker.netty;

import alluxio.network.protocol.RPCMessage;
import alluxio.network.protocol.RPCMessageDecoder;
import alluxio.network.protocol.RPCMessageEncoder;

import io.netty.channel.ChannelInitializer;
import io.netty.channel.ChannelPipeline;
import io.netty.channel.socket.SocketChannel;
import io.netty.handler.stream.ChunkedWriteHandler;

import javax.annotation.concurrent.ThreadSafe;

/**
 * Adds the block server's pipeline into the channel.
 */
@ThreadSafe
final class PipelineHandler extends ChannelInitializer<SocketChannel> {
    private final DataServerHandler mDataServerHandler;

    /**
     * @param handler the handler for the main logic of the read path
     */
    public PipelineHandler(final DataServerHandler handler) {
        mDataServerHandler = handler;
    }

    @Override
    protected void initChannel(SocketChannel ch) throws Exception {
        ChannelPipeline pipeline = ch.pipeline();
        pipeline.addLast("nioChunkedWriter", new ChunkedWriteHandler());
        pipeline.addLast("frameDecoder", RPCMessage.createFrameDecoder());
        pipeline.addLast("RPCMessageDecoder", new RPCMessageDecoder());
        pipeline.addLast("RPCMessageEncoder", new RPCMessageEncoder());
        pipeline.addLast("dataServerHandler", mDataServerHandler);
    }
}