118 lines
3.6 KiB
Java
118 lines
3.6 KiB
Java
/*
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* Copyright 2016 The Netty Project
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*
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* The Netty Project licenses this file to you under the Apache License,
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* version 2.0 (the "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*/
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package io.netty.handler.codec;
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import static java.util.Objects.requireNonNull;
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import io.netty.buffer.ByteBuf;
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import io.netty.channel.ChannelHandlerContext;
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import io.netty.channel.ChannelPipeline;
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import io.netty.channel.socket.DatagramPacket;
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import io.netty.handler.codec.protobuf.ProtobufDecoder;
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import java.util.List;
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/**
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* A decoder that decodes the content of the received {@link DatagramPacket} using
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* the specified {@link ByteBuf} decoder. E.g.,
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*
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* <pre><code>
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* {@link ChannelPipeline} pipeline = ...;
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* pipeline.addLast("udpDecoder", new {@link DatagramPacketDecoder}(new {@link ProtobufDecoder}(...));
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* </code></pre>
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*/
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public class DatagramPacketDecoder extends MessageToMessageDecoder<DatagramPacket> {
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private final MessageToMessageDecoder<ByteBuf> decoder;
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/**
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* Create a {@link DatagramPacket} decoder using the specified {@link ByteBuf} decoder.
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*
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* @param decoder the specified {@link ByteBuf} decoder
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*/
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public DatagramPacketDecoder(MessageToMessageDecoder<ByteBuf> decoder) {
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this.decoder = requireNonNull(decoder, "decoder");
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}
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@Override
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public boolean acceptInboundMessage(Object msg) throws Exception {
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if (msg instanceof DatagramPacket) {
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return decoder.acceptInboundMessage(((DatagramPacket) msg).content());
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}
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return false;
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}
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@Override
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protected void decode(ChannelHandlerContext ctx, DatagramPacket msg) throws Exception {
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decoder.decode(ctx, msg.content());
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}
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@Override
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public void channelRegistered(ChannelHandlerContext ctx) throws Exception {
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decoder.channelRegistered(ctx);
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}
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@Override
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public void channelUnregistered(ChannelHandlerContext ctx) throws Exception {
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decoder.channelUnregistered(ctx);
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}
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@Override
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public void channelActive(ChannelHandlerContext ctx) throws Exception {
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decoder.channelActive(ctx);
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}
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@Override
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public void channelInactive(ChannelHandlerContext ctx) throws Exception {
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decoder.channelInactive(ctx);
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}
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@Override
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public void channelReadComplete(ChannelHandlerContext ctx) throws Exception {
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decoder.channelReadComplete(ctx);
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}
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@Override
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public void userEventTriggered(ChannelHandlerContext ctx, Object evt) throws Exception {
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decoder.userEventTriggered(ctx, evt);
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}
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@Override
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public void channelWritabilityChanged(ChannelHandlerContext ctx) throws Exception {
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decoder.channelWritabilityChanged(ctx);
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}
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@Override
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public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
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decoder.exceptionCaught(ctx, cause);
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}
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@Override
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public void handlerAdded(ChannelHandlerContext ctx) throws Exception {
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decoder.handlerAdded(ctx);
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}
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@Override
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public void handlerRemoved(ChannelHandlerContext ctx) throws Exception {
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decoder.handlerRemoved(ctx);
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}
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@Override
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public boolean isSharable() {
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return decoder.isSharable();
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}
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}
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