使用Sigar采系统信息

简介
Sigar（System Information Gatherer And Reporter），开源的跨平台系统信息收集工具，C语言实现。
可以监控服务器性能信息，例如cpu、mem、disk等使用信息。

下载 
Hyperic-hq官方网站：http://www.hyperic.com
Sigar.jar下载地址：http://sigar.hyperic.com

使用

非Maven：直接拷贝下载压缩包中的Sigar.jar 到你的项目lib目录

 Sigar中提供的基本类

/* * Copyright (C) [2004, 2005, 2006], Hyperic, Inc. * This file is part of SIGAR. * * SIGAR is free software; you can redistribute it and/or modify * it under the terms version 2 of the GNU General Public License as * published by the Free Software Foundation. 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. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 * USA. */ package com.study.sigar; import java.io.PrintStream; import java.util.Arrays; import java.util.ArrayList; import java.util.Collection; import java.util.Iterator; import java.util.List; import org.hyperic.sigar.Sigar; import org.hyperic.sigar.SigarProxy; import org.hyperic.sigar.SigarException; import org.hyperic.sigar.cmd.Shell; import org.hyperic.sigar.pager.PageControl; import org.hyperic.sigar.pager.PageFetchException; import org.hyperic.sigar.pager.StaticPageFetcher; import org.hyperic.sigar.util.GetlineCompleter; import org.hyperic.sigar.util.PrintfFormat; import org.hyperic.sigar.shell.CollectionCompleter; import org.hyperic.sigar.shell.ProcessQueryCompleter; import org.hyperic.sigar.shell.ShellCommandBase; import org.hyperic.sigar.shell.ShellCommandExecException; import org.hyperic.sigar.shell.ShellCommandUsageException; public abstract class SigarCommandBase extends ShellCommandBase implements GetlineCompleter { protected Shell shell; protected PrintStream out = System.out; protected PrintStream err = System.err; protected Sigar sigar; protected SigarProxy proxy; protected List output = new ArrayList(); private CollectionCompleter completer; private GetlineCompleter ptqlCompleter; private Collection completions = new ArrayList(); private PrintfFormat formatter; private ArrayList printfItems = new ArrayList(); public SigarCommandBase(Shell shell) { this.shell = shell; this.out = shell.getOutStream(); this.err = shell.getErrStream(); this.sigar = shell.getSigar(); this.proxy = shell.getSigarProxy(); //provide simple way for handlers to implement tab completion this.completer = new CollectionCompleter(shell); if (isPidCompleter()) { this.ptqlCompleter = new ProcessQueryCompleter(shell); } } public SigarCommandBase() { this(new Shell()); this.shell.setPageSize(PageControl.SIZE_UNLIMITED); } public void setOutputFormat(String format) { this.formatter = new PrintfFormat(format); } public PrintfFormat getFormatter() { return this.formatter; } public String sprintf(String format, Object[] items) { return new PrintfFormat(format).sprintf(items); } public void printf(String format, Object[] items) { println(sprintf(format, items)); } public void printf(Object[] items) { PrintfFormat formatter = getFormatter(); if (formatter == null) { //see flushPrintfItems this.printfItems.add(items); } else { println(formatter.sprintf(items)); } } public void printf(List items) { printf((Object[])items.toArray(new Object[0])); } public void println(String line) { if (this.shell.isInteractive()) { this.output.add(line); } else { this.out.println(line); } } private void flushPrintfItems() { if (this.printfItems.size() == 0) { return; } //no format was specified, just line up the columns int[] max = null; for (Iterator it=this.printfItems.iterator(); it.hasNext();) { Object[] items = (Object[])it.next(); if (max == null) { max = new int[items.length]; Arrays.fill(max, 0); } for (int i=0; i 
  
    max[i]) { max[i] = len; } } } StringBuffer format = new StringBuffer(); for (int i=0; i 
   
     = 1) && Character.isDigit(line.charAt(0))) { return line; } return this.ptqlCompleter.complete(line); } public String complete(String line) { if (isPidCompleter()) { return completePid(line); } GetlineCompleter c = getCompleter(); if (c != null) { return c.complete(line); } this.completer.setCollection(getCompletions()); return this.completer.complete(line); } } 
    
  

  采集系统信息

package com.study.sigar; import java.sql.Connection; import java.sql.PreparedStatement; import java.text.DecimalFormat; import java.util.HashMap; import org.apache.log4j.Logger; import org.hyperic.sigar.CpuPerc; import org.hyperic.sigar.FileSystem; import org.hyperic.sigar.FileSystemUsage; import org.hyperic.sigar.Mem; import org.hyperic.sigar.NetInterfaceConfig; import org.hyperic.sigar.NfsFileSystem; import org.hyperic.sigar.SigarException; / * @Title: * @author Administrator * @version 1.0 */ public class SigarCollect extends SigarCommandBase { private Logger log = Logger.getLogger(SigarCollect.class); private HashMap info = new HashMap(); // Probe Name public static void main(String[] args) throws Exception { new SigarCollect().processCommand(args); } public static void collect() throws Exception { String[] args = new String[]{}; new SigarCollect().processCommand(args); } public void output(String[] args) throws SigarException { info.clear(); log.info("Sigar collect probe host info..."); //IP MAC NetInterfaceConfig config = this.sigar.getNetInterfaceConfig(null); info.put("CollectorIP", config.getAddress()); info.put("Mac", config.getHwaddr()); //采集机名称 org.hyperic.sigar.NetInfo netInfo = this.sigar.getNetInfo(); info.put("CollectorName", netInfo.getHostName()); //内存大小单位G Mem mem = this.sigar.getMem(); info.put("hMemory", mem.getTotal()/1024/1024/1024); //Mem占用百分比 String sMemory = format( mem.getUsedPercent()); info.put("Memory", sMemory); //CPU占用百分比 CpuPerc cpu = sigar.getCpuPerc(); String sCpu = format(cpu.getCombined() * 100); info.put("Cpu", sCpu); //CPU大小 格式如 3*4Core2.67GHz org.hyperic.sigar.CpuInfo[] cpuInfos = this.sigar.getCpuInfoList(); org.hyperic.sigar.CpuInfo cpuInfo = cpuInfos[0]; info.put("hCPU", cpuInfo.getModel()); //磁盘/文件系统 outputFile(); info.put("Time_stamp", System.currentTimeMillis() + ""); log.info("Collected probe host info " + info); } / * 采文件系统 */ public void outputFile() throws SigarException { FileSystem[] fslist = this.proxy.getFileSystemList(); double totalSize = 0l; double totalUsed = 0l; for (int i = 0; i < fslist.length; i++) { FileSystem fs = fslist[i]; try { FileSystemUsage usage = null; if (fs instanceof NfsFileSystem) { NfsFileSystem nfs = (NfsFileSystem) fs; if (!nfs.ping()) { log.warn(nfs.getUnreachableMessage()); return; } } try { usage = this.sigar.getFileSystemUsage(fs.getDirName()); } catch(Exception e){ continue; } totalSize += Double.parseDouble(usage.getTotal() + ""); // 总大小 totalUsed += Double.parseDouble(usage.getUsed() + ""); // 总已使用 } catch (Exception e) { log.error("Get host file system info error", e); } } //磁盘占用百分比 double percent = (double)(totalUsed/totalSize*100); String sPercent = format(percent); info.put("Disk", sPercent); //磁盘大小单位G double dTotalFileSize = totalSize/1024/1024; long iTotalFileSize = Math.round(dTotalFileSize); info.put("hDisk", iTotalFileSize); } / * 保留2位小数 * @param d * @return */ private String format(double d) { DecimalFormat fnum = new DecimalFormat("0.00"); String dd = fnum.format(d); return dd; } }