84 lines
3.2 KiB
Java
84 lines
3.2 KiB
Java
/*
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* Copyright 2010 dorkbox, llc
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* 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,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package dorkbox.network.pipeline.udp;
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import java.io.IOException;
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import java.net.InetSocketAddress;
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import java.util.List;
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import org.slf4j.LoggerFactory;
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import dorkbox.network.serialization.NetworkSerializationManager;
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import io.netty.buffer.ByteBuf;
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import io.netty.channel.ChannelHandler.Sharable;
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import io.netty.channel.ChannelHandlerContext;
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import io.netty.channel.socket.DatagramPacket;
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import io.netty.handler.codec.MessageToMessageEncoder;
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@Sharable
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public
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class KryoEncoderUdp extends MessageToMessageEncoder<Object> {
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private static final int maxSize = 1000;
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private final NetworkSerializationManager serializationManager;
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public
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KryoEncoderUdp(final NetworkSerializationManager serializationManager) {
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super();
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this.serializationManager = serializationManager;
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}
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// the crypto writer will override this
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protected
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void writeObject(NetworkSerializationManager serializationManager, ChannelHandlerContext context, Object msg, ByteBuf buffer) throws IOException {
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// no connection here because we haven't created one yet. When we do, we replace this handler with a new one.
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serializationManager.write(buffer, msg);
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}
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@Override
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protected
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void encode(ChannelHandlerContext context, Object message, List<Object> out) throws Exception {
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if (message != null) {
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try {
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ByteBuf outBuffer = context.alloc()
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.ioBuffer(maxSize);
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// no size info, since this is UDP, it is not segmented
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writeObject(this.serializationManager, context, message, outBuffer);
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// have to check to see if we are too big for UDP!
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if (outBuffer.readableBytes() > maxSize) {
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String msg =
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"Object is TOO BIG FOR UDP! " + message.toString() + " (Max " + maxSize + ", was " + outBuffer.readableBytes() +
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")";
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LoggerFactory.getLogger(this.getClass())
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.error(msg);
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throw new IOException(msg);
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}
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DatagramPacket packet = new DatagramPacket(outBuffer,
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(InetSocketAddress) context.channel()
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.remoteAddress());
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out.add(packet);
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} catch (Exception e) {
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context.fireExceptionCaught(new IOException("Unable to serialize object of type: " + message.getClass().getName(), e));
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}
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}
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}
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}
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