| 1 |
//---PACKAGE DECLARATION--- |
| 2 |
|
| 3 |
//---IMPORTS--- |
| 4 |
|
| 5 |
import java.util.Random; |
| 6 |
|
| 7 |
/** |
| 8 |
* Gathers system information then outputs it as XML |
| 9 |
* Collects data based on properties gained from the configurator |
| 10 |
* then packages these up using XMLFormatter and outputs them if |
| 11 |
* the timeout has passed. |
| 12 |
* |
| 13 |
* @author $Author: ab11 $ |
| 14 |
* @version $Id: SystemMonitor.java,v 1.2 2000/11/27 20:36:30 ab11 Exp $ |
| 15 |
*/ |
| 16 |
class SystemMonitor { |
| 17 |
|
| 18 |
//---FINAL ATTRIBUTES--- |
| 19 |
|
| 20 |
//---STATIC METHODS--- |
| 21 |
|
| 22 |
//---CONSTRUCTORS--- |
| 23 |
|
| 24 |
/** |
| 25 |
* Public constructor for the class. Takes in a Config object to gain its |
| 26 |
* properties from. |
| 27 |
* |
| 28 |
*/ |
| 29 |
public SystemMonitor( Config config ){ |
| 30 |
// create a new instace, get the info we need out of config |
| 31 |
// like things to monitor |
| 32 |
|
| 33 |
lastCheck = System.currentTimeMillis(); |
| 34 |
sequence = 0; |
| 35 |
|
| 36 |
|
| 37 |
// why oh why wont ultra edit let me put Long in the next line? oh its trying to |
| 38 |
// correct keywords =| |
| 39 |
checkInterval = Long.parseLong(config.getProperty("UDPUpdateTime")) * 1000; |
| 40 |
// make the check interval into seconds |
| 41 |
|
| 42 |
} |
| 43 |
|
| 44 |
//---PUBLIC METHODS--- |
| 45 |
|
| 46 |
/** |
| 47 |
* Gathers system information and will black until the timeout has passed. |
| 48 |
* |
| 49 |
* @return the system information in an XML packet |
| 50 |
*/ |
| 51 |
public String getInfo(){ |
| 52 |
// called to retrieve the stored averages and output them as a XML string |
| 53 |
XMLFormatter xml = new XMLFormatter("packet"); |
| 54 |
|
| 55 |
Random rand = new Random(); |
| 56 |
|
| 57 |
// just send some dummy info for now. |
| 58 |
xml.addNest("packet_info"); |
| 59 |
String currentTime = Long.toString(System.currentTimeMillis()); |
| 60 |
xml.addElement("date_time", currentTime ); |
| 61 |
xml.addElement("sequence", Integer.toString(sequence)); |
| 62 |
xml.closeNest(); |
| 63 |
xml.addNest("core"); |
| 64 |
xml.addElement("cpu",""+rand.nextInt(100)); |
| 65 |
xml.addElement("memory",""+rand.nextInt(100)); |
| 66 |
xml.closeNest(); |
| 67 |
if ( rand.nextBoolean() ){ |
| 68 |
xml.addNest("additional"); |
| 69 |
xml.addElement("users",""+rand.nextInt(30)); |
| 70 |
xml.closeNest(); |
| 71 |
} |
| 72 |
// MUST FIX THIS..!!!! |
| 73 |
try { |
| 74 |
Thread.sleep(( lastCheck + checkInterval )-System.currentTimeMillis()); |
| 75 |
} |
| 76 |
catch( InterruptedException e ){ |
| 77 |
System.out.println("Sleep interrupted"); |
| 78 |
} |
| 79 |
|
| 80 |
// increment sequence. |
| 81 |
sequence++; |
| 82 |
lastCheck = System.currentTimeMillis(); |
| 83 |
|
| 84 |
// finally return a string |
| 85 |
return xml.returnXML(); |
| 86 |
} // getinfo() |
| 87 |
|
| 88 |
//---PRIVATE METHODS--- |
| 89 |
|
| 90 |
//---ACCESSOR/MUTATOR METHODS--- |
| 91 |
|
| 92 |
//---ATTRIBUTES--- |
| 93 |
|
| 94 |
private long lastCheck; |
| 95 |
private int sequence; |
| 96 |
private long checkInterval; |
| 97 |
|
| 98 |
//---STATIC ATTRIBUTES--- |
| 99 |
|
| 100 |
} // class |
