74 lines
2.7 KiB
Java
74 lines
2.7 KiB
Java
/*
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* The MIT License (MIT)
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*
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* Copyright © 2020 xrv <xrg@live.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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package io.github.ehlxr.did.client.handler;
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import io.github.ehlxr.did.common.NettyUtil;
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import io.github.ehlxr.did.common.SdkProto;
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import io.netty.buffer.ByteBuf;
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import io.netty.channel.Channel;
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import io.netty.channel.ChannelHandlerContext;
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import io.netty.handler.codec.FixedLengthFrameDecoder;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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/**
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* @author ehlxr
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* @since 2021-01-20 14:42.
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*/
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public class SdkClientDecoder extends FixedLengthFrameDecoder {
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private final Logger logger = LoggerFactory.getLogger(SdkClientDecoder.class);
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public SdkClientDecoder(int frameLength) {
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super(frameLength);
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}
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@Override
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protected Object decode(ChannelHandlerContext ctx, ByteBuf in) {
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ByteBuf buf = null;
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try {
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buf = (ByteBuf) super.decode(ctx, in);
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if (buf == null) {
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return null;
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}
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return new SdkProto(buf.readInt(), buf.readLong());
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} catch (Exception e) {
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logger.error("SdkClientDecoder decode exception, " + NettyUtil.parseRemoteAddr(ctx.channel()), e);
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NettyUtil.closeChannel(ctx.channel());
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} finally {
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if (buf != null) {
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buf.release();
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}
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}
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return null;
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}
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@Override
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public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
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Channel channel = ctx.channel();
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logger.error("SdkServerDecoder channel [{}] error and will be closed", NettyUtil.parseRemoteAddr(channel), cause);
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NettyUtil.closeChannel(channel);
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}
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}
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