CombinedChannelDuplexHandler.java — netty Source File

Source Code

/*
 * Copyright 2012 The Netty Project
 *
 * The Netty Project 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:
 *
 *   https://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 io.netty.channel;

import io.netty.buffer.ByteBufAllocator;
import io.netty.util.Attribute;
import io.netty.util.AttributeKey;
import io.netty.util.concurrent.EventExecutor;
import io.netty.util.internal.ObjectUtil;
import io.netty.util.internal.logging.InternalLogger;
import io.netty.util.internal.logging.InternalLoggerFactory;

import java.net.SocketAddress;

/**
 *  Combines a {@link ChannelInboundHandler} and a {@link ChannelOutboundHandler} into one {@link ChannelHandler}.
 */
public class CombinedChannelDuplexHandler<I extends ChannelInboundHandler, O extends ChannelOutboundHandler>
        extends ChannelDuplexHandler {

    private static final InternalLogger logger = InternalLoggerFactory.getInstance(CombinedChannelDuplexHandler.class);

    private DelegatingChannelHandlerContext inboundCtx;
    private DelegatingChannelHandlerContext outboundCtx;
    private volatile boolean handlerAdded;

    private I inboundHandler;
    private O outboundHandler;

    /**
     * Creates a new uninitialized instance. A class that extends this handler must invoke
     * {@link #init(ChannelInboundHandler, ChannelOutboundHandler)} before adding this handler into a
     * {@link ChannelPipeline}.
     */
    protected CombinedChannelDuplexHandler() {
        ensureNotSharable();
    }

    /**
     * Creates a new instance that combines the specified two handlers into one.
     */
    public CombinedChannelDuplexHandler(I inboundHandler, O outboundHandler) {
        ensureNotSharable();
        init(inboundHandler, outboundHandler);
    }

    /**
// ... (555 more lines)