/*
* 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.thrift.io.NetworkAvailabilityCheckPacket;
import org.apache.thrift.TBase;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.DisposableBean;
import java.io.IOException;
import java.net.*;
/**
* @author emeroad
*/
public class NetworkAvailabilityCheckPacketFilter<T extends SocketAddress> implements TBaseFilter<T>, DisposableBean {
private final Logger logger = LoggerFactory.getLogger(this.getClass());
public NetworkAvailabilityCheckPacketFilter() {
}
@Override
public boolean filter(DatagramSocket localSocket, TBase<?, ?> tBase, T remoteHostAddress) {
// Network port availability check packet
if (tBase instanceof NetworkAvailabilityCheckPacket) {
if (logger.isInfoEnabled()) {
logger.info("received udp network availability check packet. remoteAddress:{}", remoteHostAddress);
}
responseOK(localSocket, remoteHostAddress);
return BREAK;
}
return CONTINUE;
}
private void responseOK(DatagramSocket socket, T remoteHostAddress) {
try {
byte[] okBytes = NetworkAvailabilityCheckPacket.DATA_OK;
DatagramPacket pongPacket = new DatagramPacket(okBytes, okBytes.length, remoteHostAddress);
socket.send(pongPacket);
} catch (IOException e) {
if (logger.isWarnEnabled()) {
logger.warn("pong error. SendSocketAddress:{} Cause:{}", remoteHostAddress, e.getMessage(), e);
}
}
}
@Override
public void destroy() throws Exception {
}
}