org.apache.pulsar.io.netty.udp.NettyUDPServerHandler Maven / Gradle / Ivy
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* 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
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* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.pulsar.io.netty.udp;
import io.netty.buffer.ByteBufUtil;
import io.netty.channel.ChannelHandler;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.SimpleChannelInboundHandler;
import io.netty.channel.socket.DatagramPacket;
import java.io.Serializable;
import java.util.Optional;
import lombok.Data;
import org.apache.pulsar.functions.api.Record;
import org.apache.pulsar.io.netty.NettySource;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Handles a server-side channel.
*/
@ChannelHandler.Sharable
public class NettyUDPServerHandler extends SimpleChannelInboundHandler {
private static final Logger logger = LoggerFactory.getLogger(NettyUDPServerHandler.class);
private NettySource nettySource;
public NettyUDPServerHandler(NettySource nettySource) {
this.nettySource = nettySource;
}
@Override
protected void channelRead0(ChannelHandlerContext channelHandlerContext, DatagramPacket packet) throws Exception {
byte[] bytes = ByteBufUtil.getBytes(packet.content());
nettySource.consume(new NettyUDPRecord(Optional.of(""), bytes));
}
@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
logger.error("Error when processing incoming data", cause);
ctx.close();
}
@Data
private static class NettyUDPRecord implements Record, Serializable {
private final Optional key;
private final byte[] value;
}
}