Add combined codec classes and related utility method
This commit is contained in:
Trustin Lee
parent
e5da7b53dd
commit
e846505ceb
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@ -0,0 +1,51 @@
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package io.netty.handler.codec;
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import io.netty.channel.ChannelBufferHolder;
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import io.netty.channel.ChannelFuture;
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import io.netty.channel.ChannelHandlerAdapter;
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import io.netty.channel.ChannelInboundHandlerContext;
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import io.netty.channel.ChannelOutboundHandlerContext;
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public abstract class MessageToMessageCodec<INBOUND_IN, INBOUND_OUT, OUTBOUND_IN, OUTBOUND_OUT>
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extends ChannelHandlerAdapter<INBOUND_IN, OUTBOUND_IN> {
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private final MessageToMessageEncoder<OUTBOUND_IN, OUTBOUND_OUT> encoder =
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new MessageToMessageEncoder<OUTBOUND_IN, OUTBOUND_OUT>() {
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@Override
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public OUTBOUND_OUT encode(ChannelOutboundHandlerContext<OUTBOUND_IN> ctx, OUTBOUND_IN msg) throws Exception {
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return MessageToMessageCodec.this.encode(ctx, msg);
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}
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};
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private final MessageToMessageDecoder<INBOUND_IN, INBOUND_OUT> decoder =
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new MessageToMessageDecoder<INBOUND_IN, INBOUND_OUT>() {
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@Override
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public INBOUND_OUT decode(ChannelInboundHandlerContext<INBOUND_IN> ctx, INBOUND_IN msg) throws Exception {
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return MessageToMessageCodec.this.decode(ctx, msg);
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}
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};
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@Override
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public ChannelBufferHolder<INBOUND_IN> newInboundBuffer(ChannelInboundHandlerContext<INBOUND_IN> ctx) throws Exception {
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return decoder.newInboundBuffer(ctx);
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}
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@Override
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public void inboundBufferUpdated(
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ChannelInboundHandlerContext<INBOUND_IN> ctx) throws Exception {
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decoder.inboundBufferUpdated(ctx);
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}
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@Override
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public ChannelBufferHolder<OUTBOUND_IN> newOutboundBuffer(ChannelOutboundHandlerContext<OUTBOUND_IN> ctx) throws Exception {
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return encoder.newOutboundBuffer(ctx);
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}
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@Override
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public void flush(ChannelOutboundHandlerContext<OUTBOUND_IN> ctx, ChannelFuture future) throws Exception {
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encoder.flush(ctx, future);
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}
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public abstract OUTBOUND_OUT encode(ChannelOutboundHandlerContext<OUTBOUND_IN> ctx, OUTBOUND_IN msg) throws Exception;
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public abstract INBOUND_OUT decode(ChannelInboundHandlerContext<INBOUND_IN> ctx, INBOUND_IN msg) throws Exception;
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}
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@ -0,0 +1,61 @@
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package io.netty.handler.codec;
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import io.netty.buffer.ChannelBuffer;
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import io.netty.channel.ChannelBufferHolder;
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import io.netty.channel.ChannelFuture;
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import io.netty.channel.ChannelHandlerAdapter;
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import io.netty.channel.ChannelInboundHandlerContext;
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import io.netty.channel.ChannelOutboundHandlerContext;
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public abstract class StreamToMessageCodec<INBOUND_OUT, OUTBOUND_IN>
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extends ChannelHandlerAdapter<Byte, OUTBOUND_IN> {
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private final MessageToStreamEncoder<OUTBOUND_IN> encoder =
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new MessageToStreamEncoder<OUTBOUND_IN>() {
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@Override
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public void encode(
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ChannelOutboundHandlerContext<OUTBOUND_IN> ctx,
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OUTBOUND_IN msg, ChannelBuffer out) throws Exception {
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StreamToMessageCodec.this.encode(ctx, msg, out);
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}
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};
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private final StreamToMessageDecoder<INBOUND_OUT> decoder =
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new StreamToMessageDecoder<INBOUND_OUT>() {
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@Override
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public INBOUND_OUT decode(
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ChannelInboundHandlerContext<Byte> ctx, ChannelBuffer in) throws Exception {
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return StreamToMessageCodec.this.decode(ctx, in);
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}
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};
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@Override
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public ChannelBufferHolder<Byte> newInboundBuffer(
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ChannelInboundHandlerContext<Byte> ctx) throws Exception {
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return decoder.newInboundBuffer(ctx);
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}
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@Override
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public void inboundBufferUpdated(ChannelInboundHandlerContext<Byte> ctx) throws Exception {
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decoder.inboundBufferUpdated(ctx);
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}
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@Override
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public ChannelBufferHolder<OUTBOUND_IN> newOutboundBuffer(
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ChannelOutboundHandlerContext<OUTBOUND_IN> ctx) throws Exception {
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return encoder.newOutboundBuffer(ctx);
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}
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@Override
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public void flush(
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ChannelOutboundHandlerContext<OUTBOUND_IN> ctx, ChannelFuture future) throws Exception {
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encoder.flush(ctx, future);
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}
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public abstract void encode(
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ChannelOutboundHandlerContext<OUTBOUND_IN> ctx,
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OUTBOUND_IN msg, ChannelBuffer out) throws Exception;
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public abstract INBOUND_OUT decode(
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ChannelInboundHandlerContext<Byte> ctx, ChannelBuffer in) throws Exception;
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}
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@ -0,0 +1,60 @@
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package io.netty.handler.codec;
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import io.netty.buffer.ChannelBuffer;
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import io.netty.channel.ChannelBufferHolder;
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import io.netty.channel.ChannelFuture;
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import io.netty.channel.ChannelHandlerAdapter;
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import io.netty.channel.ChannelInboundHandlerContext;
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import io.netty.channel.ChannelOutboundHandlerContext;
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public abstract class StreamToStreamCodec extends ChannelHandlerAdapter<Byte, Byte> {
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private final StreamToStreamEncoder encoder = new StreamToStreamEncoder() {
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@Override
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public void encode(
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ChannelOutboundHandlerContext<Byte> ctx,
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ChannelBuffer in, ChannelBuffer out) throws Exception {
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StreamToStreamCodec.this.encode(ctx, in, out);
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}
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};
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private final StreamToStreamDecoder decoder = new StreamToStreamDecoder() {
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@Override
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public void decode(
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ChannelInboundHandlerContext<Byte> ctx,
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ChannelBuffer in, ChannelBuffer out) throws Exception {
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StreamToStreamCodec.this.decode(ctx, in, out);
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}
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};
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@Override
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public ChannelBufferHolder<Byte> newInboundBuffer(
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ChannelInboundHandlerContext<Byte> ctx) throws Exception {
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return decoder.newInboundBuffer(ctx);
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}
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@Override
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public void inboundBufferUpdated(ChannelInboundHandlerContext<Byte> ctx) throws Exception {
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decoder.inboundBufferUpdated(ctx);
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}
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@Override
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public ChannelBufferHolder<Byte> newOutboundBuffer(
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ChannelOutboundHandlerContext<Byte> ctx) throws Exception {
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return encoder.newOutboundBuffer(ctx);
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}
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@Override
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public void flush(
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ChannelOutboundHandlerContext<Byte> ctx, ChannelFuture future) throws Exception {
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encoder.flush(ctx, future);
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}
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public abstract void encode(
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ChannelOutboundHandlerContext<Byte> ctx,
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ChannelBuffer in, ChannelBuffer out) throws Exception;
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public abstract void decode(
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ChannelInboundHandlerContext<Byte> ctx,
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ChannelBuffer in, ChannelBuffer out) throws Exception;
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}
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@ -3,6 +3,146 @@ package io.netty.channel;
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import java.net.SocketAddress;
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public abstract class ChannelHandlerAdapter<I, O> implements ChannelInboundHandler<I>, ChannelOutboundHandler<O> {
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public static <I, O> ChannelHandlerAdapter<I, O> combine(
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ChannelInboundHandler<I> inboundHandler, ChannelOutboundHandler<O> outboundHandler) {
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if (inboundHandler == null) {
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throw new NullPointerException("inboundHandler");
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}
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if (outboundHandler == null) {
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throw new NullPointerException("outboundHandler");
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}
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final ChannelInboundHandler<I> in = inboundHandler;
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final ChannelOutboundHandler<O> out = outboundHandler;
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return new ChannelHandlerAdapter<I, O>() {
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@Override
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public ChannelBufferHolder<I> newInboundBuffer(
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ChannelInboundHandlerContext<I> ctx) throws Exception {
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return in.newInboundBuffer(ctx);
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}
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@Override
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public ChannelBufferHolder<O> newOutboundBuffer(
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ChannelOutboundHandlerContext<O> ctx) throws Exception {
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return out.newOutboundBuffer(ctx);
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}
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@Override
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public void beforeAdd(ChannelHandlerContext ctx) throws Exception {
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try {
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in.beforeAdd(ctx);
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} finally {
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out.beforeAdd(ctx);
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}
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}
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@Override
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public void afterAdd(ChannelHandlerContext ctx) throws Exception {
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try {
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in.afterAdd(ctx);
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} finally {
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out.afterAdd(ctx);
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}
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}
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@Override
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public void beforeRemove(ChannelHandlerContext ctx) throws Exception {
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try {
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in.beforeRemove(ctx);
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} finally {
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out.beforeRemove(ctx);
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}
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}
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@Override
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public void afterRemove(ChannelHandlerContext ctx) throws Exception {
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try {
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in.afterRemove(ctx);
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} finally {
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out.afterRemove(ctx);
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}
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}
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@Override
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public void channelRegistered(ChannelInboundHandlerContext<I> ctx) throws Exception {
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in.channelRegistered(ctx);
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}
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@Override
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public void channelUnregistered(ChannelInboundHandlerContext<I> ctx) throws Exception {
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in.channelUnregistered(ctx);
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}
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@Override
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public void channelActive(ChannelInboundHandlerContext<I> ctx) throws Exception {
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in.channelActive(ctx);
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}
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@Override
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public void channelInactive(ChannelInboundHandlerContext<I> ctx) throws Exception {
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in.channelInactive(ctx);
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}
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@Override
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public void exceptionCaught(
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ChannelInboundHandlerContext<I> ctx, Throwable cause) throws Exception {
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in.exceptionCaught(ctx, cause);
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}
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@Override
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public void userEventTriggered(
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ChannelInboundHandlerContext<I> ctx, Object evt) throws Exception {
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in.userEventTriggered(ctx, evt);
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}
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@Override
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public void inboundBufferUpdated(ChannelInboundHandlerContext<I> ctx) throws Exception {
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in.inboundBufferUpdated(ctx);
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}
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@Override
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public void bind(
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ChannelOutboundHandlerContext<O> ctx,
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SocketAddress localAddress, ChannelFuture future) throws Exception {
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out.bind(ctx, localAddress, future);
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}
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@Override
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public void connect(
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ChannelOutboundHandlerContext<O> ctx,
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SocketAddress remoteAddress, SocketAddress localAddress,
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ChannelFuture future) throws Exception {
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out.connect(ctx, remoteAddress, localAddress, future);
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}
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@Override
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public void disconnect(
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ChannelOutboundHandlerContext<O> ctx, ChannelFuture future) throws Exception {
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out.disconnect(ctx, future);
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}
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@Override
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public void close(
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ChannelOutboundHandlerContext<O> ctx, ChannelFuture future) throws Exception {
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out.close(ctx, future);
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}
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@Override
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public void deregister(
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ChannelOutboundHandlerContext<O> ctx, ChannelFuture future) throws Exception {
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out.deregister(ctx, future);
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}
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@Override
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public void flush(
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ChannelOutboundHandlerContext<O> ctx, ChannelFuture future) throws Exception {
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out.flush(ctx, future);
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}
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};
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}
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@Override
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public void beforeAdd(ChannelHandlerContext ctx) throws Exception {
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// Do nothing by default.
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