sigaruptimeinfo.java

这是一个基于计算网格的web service。它用java编写。一旦安装完成

/*
 * SigarUptimeInfo.java
 *
 * Created on March 14, 2005, 12:30 PM
 */

package net.hyperic.sigar.cmd;

import net.hyperic.sigar.SigarProxy;
import net.hyperic.sigar.SigarException;
import net.hyperic.sigar.SigarNotImplementedException;
import net.hyperic.sigar.util.PrintfFormat;

import java.text.SimpleDateFormat;
import java.util.Date;

/**
 *
 * @author Sean
 */
public class SigarUptimeInfo extends SigarCommandBase {
    
    /** Creates a new instance of SigarUptimeInfo */
    public SigarUptimeInfo() {
        super();
    }
    
    /**
     *
     */     
    public double getUptime() throws SigarException {
        try {
            return sigar.getUptime().getUptime();
        } catch (SigarException e) {
            throw e;
        }
    } 
    
    /**
     *
     */     
    public double getUptimeMins() throws SigarException {
        try {
            return sigar.getUptime().getUptime() / 60;
        } catch (SigarException e) {
            throw e;
        }
    }    
    
    /**
     *
     */     
    public double getUptimeHrs() throws SigarException {
        try {
            return sigar.getUptime().getUptime() / (60 * 60);
        } catch (SigarException e) {
            throw e;
        }
    }    
    
    /**
     *
     */     
    public double getUptimeDays() throws SigarException {
        try {
            return sigar.getUptime().getUptime() / (60 * 60 * 24);
        } catch (SigarException e) {
            throw e;
        }
    }     
    
    /**
     *
     */     
    public double[] getLoadAvg() throws SigarException {
         try {
            return sigar.getLoadAverage();
        } catch (SigarException e) {
            throw e;
        }       
    }
    
    /**
     *
     */   
    public void output() throws SigarException {
         try {
            output(null);
        } catch (SigarException e) {
            throw e;
        }         
    }

    /**
     *
     */   
    public void output(String[] args) throws SigarException {
        double dUptime;
        double[] loadAvgArr;
        String loadAvgStr;
        String uptimeStr;
        String currTimeStr;
        PrintfFormat formatter = new PrintfFormat("%.2f, %.2f, %.2f"); 
        
        try {
            dUptime = sigar.getUptime().getUptime();
        } catch (SigarException e) {
            throw e;
        }

        try {
            loadAvgArr = sigar.getLoadAverage();
            loadAvgStr = "load average: " + formatter.sprintf(loadAvgArr);

        } catch (SigarNotImplementedException e) {
            loadAvgStr = "(load average unknown)";
        }

        uptimeStr = 
            "  " + getCurrentTime() + 
            "  up " + formatUptime(dUptime) +
            ", " + loadAvgStr;
        
        System.out.println( uptimeStr );
    }

    /**
     *
     */     
    private static String formatUptime(double uptime) {
        String retval = "";

        int days = (int)uptime / (60*60*24);
        int minutes, hours;

        if (days != 0) {
            retval += days + " " + ((days > 1) ? "days" : "day") + ", ";
        }

        minutes = (int)uptime / 60;
        hours = minutes / 60;
        hours %= 24;
        minutes %= 60;

        if (hours != 0) {
            retval += hours + ":" + minutes;
        }
        else {
            retval += minutes + " min";
        }

        return retval;
    }

    /**
     *
     */     
    private static String getCurrentTime() {
        return new SimpleDateFormat("h:mm a").format(new Date());
    }  
    
    public static void main( String[] args ) {
        try {
            SigarUptimeInfo info = new SigarUptimeInfo();
            info.output();
        } catch ( Exception ex ) {
            System.out.println( ex.getMessage() );            
        }
    }     
}