/*
* Copyright 2014 NAVER Corp.
*
* Licensed 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 "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.navercorp.pinpoint.collector.receiver.udp;
import com.navercorp.pinpoint.collector.receiver.DispatchHandler;
import com.navercorp.pinpoint.collector.util.PacketUtils;
import com.navercorp.pinpoint.thrift.io.*;
import org.apache.thrift.TBase;
import org.apache.thrift.TException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.net.*;
import java.util.List;
/**
* Chunked UDP packet receiver
*
* @author jaehong.kim
*/
public class ChunkedUDPPacketHandlerFactory<T extends DatagramPacket> implements PacketHandlerFactory<T> {
private final Logger logger = LoggerFactory.getLogger(this.getClass());
private final DeserializerFactory<ChunkHeaderTBaseDeserializer> deserializerFactory = new ThreadLocalHeaderTBaseDeserializerFactory<>(new ChunkHeaderTBaseDeserializerFactory());
private final DispatchHandler dispatchHandler;
private final TBaseFilter filter;
private final PacketHandler<T> dispatchPacket = new DispatchPacket();
public ChunkedUDPPacketHandlerFactory(DispatchHandler dispatchHandler, TBaseFilter<T> filter) {
if (dispatchHandler == null) {
throw new NullPointerException("dispatchHandler must not be null");
}
this.dispatchHandler = dispatchHandler;
this.filter = filter;
}
@Override
public PacketHandler<T> createPacketHandler() {
return this.dispatchPacket;
}
// stateless
private class DispatchPacket implements PacketHandler<T> {
private DispatchPacket() {
}
@Override
public void receive(DatagramSocket localSocket, T packet) {
final ChunkHeaderTBaseDeserializer deserializer = deserializerFactory.createDeserializer();
try {
List<TBase<?, ?>> list = deserializer.deserialize(packet.getData(), packet.getOffset(), packet.getLength());
if (list == null) {
return;
}
for (TBase<?, ?> tBase : list) {
if (filter.filter(localSocket, tBase, packet.getSocketAddress()) == TBaseFilter.BREAK) {
return;
}
// dispatch signifies business logic execution
dispatchHandler.dispatchSendMessage(tBase);
}
} catch (TException e) {
if (logger.isWarnEnabled()) {
logger.warn("packet serialize error. SendSocketAddress:{} Cause:{}", packet.getSocketAddress(), e.getMessage(), e);
}
if (logger.isDebugEnabled()) {
logger.debug("packet dump hex:{}", PacketUtils.dumpDatagramPacket(packet));
}
} catch (Exception e) {
if (logger.isWarnEnabled()) {
logger.warn("Unexpected error. SendSocketAddress:{} Cause:{} ", packet.getSocketAddress(), e.getMessage(), e);
}
if (logger.isDebugEnabled()) {
logger.debug("packet dump hex:{}", PacketUtils.dumpDatagramPacket(packet));
}
}
}
}
}