com.clustercontrol.winsyslog.UdpSender.java Source code

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Here is the source code for com.clustercontrol.winsyslog.UdpSender.java

Source

/*
    
Copyright (C) 2017 NTT DATA Corporation
    
This program is free software; you can redistribute it and/or
Modify it under the terms of the GNU General Public License
as published by the Free Software Foundation, version 2.
    
This program is distributed in the hope that it will be
useful, but WITHOUT ANY WARRANTY; without even the implied
warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE.  See the GNU General Public License for more details.
    
 */
package com.clustercontrol.winsyslog;

import java.io.IOException;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetSocketAddress;
import java.net.SocketException;
import java.util.ArrayList;
import java.util.List;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

/**
 * ?????UDP???
 */
public class UdpSender {
    private static Log log = LogFactory.getLog(UdpSender.class);

    private static InetSocketAddress[] toAddresses = null;

    /**
     * ??
     * @param configValue ??
     */
    public static void init(String configValue) {
        // ?
        // ex)192.168.0.1:24001,192.168.0.2:24001
        List<InetSocketAddress> sockets = new ArrayList<InetSocketAddress>();
        if (configValue != null && configValue.length() > 0) {
            String[] targetsArray = configValue.split(",");
            for (String target : targetsArray) {
                String[] address = target.split(":");
                if (address.length != 2) {
                    log.warn("illegal configuration value line \"syslog.send.targets\":" + target);
                    continue;
                }

                try {
                    InetSocketAddress socketAddress = new InetSocketAddress(address[0].trim(),
                            Integer.parseInt(address[1].trim()));
                    sockets.add(socketAddress);
                } catch (Exception e) {
                    log.warn("illegal configuration value line \"syslog.send.targets\":" + target, e);
                }
            }

        } else {
            log.warn("configuration value \"syslog.send.targets\" is not defined.");
        }
        toAddresses = sockets.toArray(new InetSocketAddress[0]);
    }

    /**
     * ??
     * @param sendBuff ?
     */
    public static void send(byte[] sendBuff) {
        if (toAddresses == null) {
            log.warn("UdpSender is not Initialised.");
            return;
        } else if (toAddresses.length == 0) {
            log.warn("send target is none.");
            return;
        }

        SenderTask sender = new SenderTask(sendBuff);
        Thread thread = new Thread(sender);
        thread.start();
    }

    private static class SenderTask implements Runnable {
        private byte[] sendBuff;

        public SenderTask(byte[] sendBuff) {
            this.sendBuff = sendBuff;
        }

        @Override
        public void run() {
            try {
                for (InetSocketAddress addr : toAddresses) {
                    log.debug("send to [" + addr.toString() + "]");
                    DatagramSocket dataSocket = new DatagramSocket();
                    DatagramPacket packet = new DatagramPacket(sendBuff, sendBuff.length, addr);
                    dataSocket.send(packet);
                    dataSocket.close();
                }

            } catch (SocketException e) {
                log.error("send failed.", e);
            } catch (IOException e) {
                log.error("send failed.", e);
            }
        }
    }

}