org.apache.dubbo.remoting.transport.netty4.NettyPortUnificationServerHandler Maven / Gradle / Ivy

Show more of this group Show more artifacts with this name
Show all versions of dubbo Show documentation
The all in one project of dubbo
There is a newer version: 3.3.0-beta.3
/*
 * 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.remoting.transport.netty4;

import org.apache.dubbo.common.URL;
import org.apache.dubbo.common.io.Bytes;
import org.apache.dubbo.common.logger.ErrorTypeAwareLogger;
import org.apache.dubbo.common.logger.LoggerFactory;
import org.apache.dubbo.common.utils.NetUtils;
import org.apache.dubbo.remoting.Channel;
import org.apache.dubbo.remoting.ChannelHandler;
import org.apache.dubbo.remoting.api.ProtocolDetector;
import org.apache.dubbo.remoting.api.WireProtocol;
import org.apache.dubbo.remoting.buffer.ChannelBuffer;

import io.netty.buffer.ByteBuf;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelPipeline;
import io.netty.handler.codec.ByteToMessageDecoder;
import io.netty.handler.ssl.SslContext;
import io.netty.handler.ssl.SslHandler;

import java.net.InetSocketAddress;
import java.util.List;
import java.util.Map;
import java.util.Set;

import static org.apache.dubbo.common.constants.LoggerCodeConstants.TRANSPORT_UNEXPECTED_EXCEPTION;

public class NettyPortUnificationServerHandler extends ByteToMessageDecoder {

    private static final ErrorTypeAwareLogger LOGGER = LoggerFactory.getErrorTypeAwareLogger(
        NettyPortUnificationServerHandler.class);

    private final SslContext sslCtx;
    private final URL url;
    private final ChannelHandler handler;
    private final boolean detectSsl;
    private final List protocols;
    private final Map dubboChannels;
    private final Map urlMapper;
    private final Map handlerMapper;


    public NettyPortUnificationServerHandler(URL url, SslContext sslCtx, boolean detectSsl,
                                             List protocols, ChannelHandler handler,
                                             Map dubboChannels, Map urlMapper, Map handlerMapper) {
        this.url = url;
        this.sslCtx = sslCtx;
        this.protocols = protocols;
        this.detectSsl = detectSsl;
        this.handler = handler;
        this.dubboChannels = dubboChannels;
        this.urlMapper = urlMapper;
        this.handlerMapper = handlerMapper;
    }

    @Override
    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
        LOGGER.error(TRANSPORT_UNEXPECTED_EXCEPTION, "", "", "Unexpected exception from downstream before protocol detected.", cause);
    }

    @Override
    public void channelActive(ChannelHandlerContext ctx) throws Exception {
        super.channelActive(ctx);
        NettyChannel channel = NettyChannel.getOrAddChannel(ctx.channel(), url, handler);
        if (channel != null) {
            // this is needed by some test cases
            dubboChannels.put(NetUtils.toAddressString((InetSocketAddress) ctx.channel().remoteAddress()), channel);
        }
    }

    @Override
    protected void decode(ChannelHandlerContext ctx, ByteBuf in, List