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//---PACKAGE DECLARATION--- |
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|
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//---IMPORTS--- |
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import java.util.Random; |
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import java.io.*; |
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|
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/** |
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* Gathers system information then outputs it as XML |
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* Collects data based on properties gained from the configurator |
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* then packages these up using XMLFormatter and outputs them if |
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* the timeout has passed. |
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* |
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* @author $Author: ab11 $ |
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* @version $Id: SystemMonitor.java,v 1.4 2000/11/30 17:33:36 ab11 Exp $ |
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*/ |
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class SystemMonitor { |
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|
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//---FINAL ATTRIBUTES--- |
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|
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//---STATIC METHODS--- |
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|
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//---CONSTRUCTORS--- |
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|
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/** |
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* Public constructor for the class. Takes in a Config object to gain its |
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* properties from. |
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* |
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*/ |
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public SystemMonitor( Config config ){ |
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// create a new instace, get the info we need out of config |
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// like things to monitor |
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|
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lastCheck = System.currentTimeMillis(); |
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sequence = 0; |
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|
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|
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// why oh why wont ultra edit let me put Long in the next line? oh its trying to |
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// correct keywords =| |
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try { |
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udpcheckInterval = Long.parseLong(config.getProperty("UDPUpdateTime")) * 1000; |
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} |
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catch ( NumberFormatException e ){ |
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System.out.println("The value for UDPUpdateTime is invalid, using a default"); |
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// 5 mins |
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udpcheckInterval = 5000 * 60; |
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} |
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// make the check interval into seconds |
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|
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} |
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|
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//---PUBLIC METHODS--- |
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|
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/** |
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* Gathers system information and will black until the timeout has passed. |
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* |
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* @return the system information in an XML packet |
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*/ |
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public String getInfo(){ |
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// called to retrieve the stored averages and output them as a XML string |
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XMLFormatter xml = new XMLFormatter("packet"); |
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|
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// the process to run |
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try { |
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Process proc = Runtime.getRuntime().exec("/usr/local/sbin/top -s1 -d2 0 > top.txt"); |
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// this process will take atleast 2 seconds to complete |
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try { |
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proc.waitFor(); |
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} |
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catch ( InterruptedException e ){ |
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|
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} |
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|
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} |
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catch ( IOException e ){ |
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|
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} |
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|
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|
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// now do some text processing. |
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DecodeCPU_TXT details = new DecodeCPU_TXT("top.txt"); |
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|
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|
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Random rand = new Random(); |
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|
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// just send some dummy info for now. |
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xml.addNest("packet_info"); |
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String currentTime = Long.toString(System.currentTimeMillis()); |
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xml.addElement("date_time", currentTime ); |
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xml.addElement("sequence", Integer.toString(sequence)); |
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xml.closeNest(); |
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xml.addString(details.getItems()); |
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|
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|
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// MUST FIX THIS..!!!! |
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try { |
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long updateIn = ( lastCheck + udpcheckInterval )-System.currentTimeMillis(); |
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if ( updateIn > 0 ){ |
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Thread.sleep(updateIn); |
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} |
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else |
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{ |
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Thread.sleep(defaultUpdateTime); |
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} |
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} |
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catch( InterruptedException e ){ |
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System.out.println("Sleep interrupted"); |
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} |
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|
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// increment sequence. |
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sequence++; |
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lastCheck = System.currentTimeMillis(); |
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|
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// finally return a string |
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return xml.returnXML(); |
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} // getinfo() |
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|
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//---PRIVATE METHODS--- |
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|
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//---ACCESSOR/MUTATOR METHODS--- |
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|
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//---ATTRIBUTES--- |
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|
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private long lastCheck; |
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private int sequence; |
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private long udpcheckInterval; |
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private final long defaultUpdateTime = 60000; |
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|
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//---STATIC ATTRIBUTES--- |
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|
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} // class |
