通过Hyperic-hq产品的基础包sigar.jar来实现服务器状态数据的获取

通过Hyperic-hq产品的基础包sigar.jar来实现服务器状态数据的获取。Sigar.jar包是通过本地方法来调用操作系统API来获取系统相关数据。Windows操作系统下Sigar.jar依赖sigar-amd64-winnt.dll或sigar-x86- winnt.dll，linux 操作系统下则依赖libsigar-amd64-linux.so或libsigar-x86-linux.so……而Sigar.jar还依赖于 jug-asl-2.0.0.jar、log4j-1.2.14.jar、Junit.jar，
Hyperic-hq官方网站：http://www.hyperic.com
Sigar.jar下载地址：http://sigar.hyperic.com
Sigar.jar包的使用方法：

1. CPU资源信息
a) CPU数量（单位：个）
privatestaticint getCpuCount() throws SigarException {
      Sigar sigar = new Sigar();
      try {
   return sigar.getCpuInfoList().length;
      } finally {
   sigar.close();
      }
}
b) CPU的总量（单位：HZ）及CPU的相关信息
Sigar sigar = getSigar();
        CpuInfo infos[] = sigar.getCpuInfoList();
        for (int i = 0; i < infos.length; i++) {//不管是单块CPU还是多CPU都适用
     CpuInfo info = infos[i];
     traceln("mhz=" + info.getMhz());//CPU的总量MHz
     traceln("vendor=" + info.getVendor());//获得CPU的卖主，如：Intel
     traceln("model=" + info.getModel());//获得CPU的类别，如：Celeron
     traceln("cache size=" + info.getCacheSize());//缓冲存储器数量
}
c) CPU的用户使用量、系统使用剩余量、总的剩余量、总的使用占用量等（单位：100%）
publicvoid testCpuPerc() {
     Sigar sigar = new Sigar();
     // 方式一，主要是针对一块CPU的情况
     CpuPerc cpu;
     try {
         cpu = sigar.getCpuPerc();
         printCpuPerc(cpu);
     } catch (SigarException e) {
         e.printStackTrace();
     }
     // 方式二，不管是单块CPU还是多CPU都适用
     CpuPerc cpuList[] = null;
     try {
         cpuList = sigar.getCpuPercList();
     } catch (SigarException e) {
         e.printStackTrace();
         return;
     }
     for (int i = 0; i < cpuList.length; i++) {
         printCpuPerc(cpuList[i]);
     }
  }
  privatevoid printCpuPerc(CpuPerc cpu) {
     println("User :" + CpuPerc.format(cpu.getUser()));// 用户使用率
     println("Sys :" + CpuPerc.format(cpu.getSys()));// 系统使用率
     println("Wait :" + CpuPerc.format(cpu.getWait()));// 当前等待率
     println("Nice :" + CpuPerc.format(cpu.getNice()));//
     println("Idle :" + CpuPerc.format(cpu.getIdle()));// 当前空闲率
     println("Total :" + CpuPerc.format(cpu.getCombined()));// 总的使用率
}
d) ……
2. 内存资源信息
a) 物理内存信息
Sigar sigar = new Sigar();
Mem mem = sigar.getMem();
// 内存总量
        System.out.println("Total = " + mem.getTotal() / 1024L + "K av");
        // 当前内存使用量
        System.out.println("Used = " + mem.getUsed() / 1024L + "K used");
        // 当前内存剩余量
System.out.println("Free = " + mem.getFree() / 1024L + "K free");
b) 系统页面文件交换区信息
Sigar sigar = new Sigar();
Swap swap = sigar.getSwap();
// 交换区总量
        System.out.println("Total = " + swap.getTotal() / 1024L + "K av");
        // 当前交换区使用量
        System.out.println("Used = " + swap.getUsed() / 1024L + "K used");
        // 当前交换区剩余量
System.out.println("Free = " + swap.getFree() / 1024L + "K free");
c) ……
3. 操作系统信息
a) 取到当前操作系统的名称：
  private String getPlatformName() {
     String hostname = "";
     try {
         hostname = InetAddress.getLocalHost().getHostName();
     } catch (Exception exc) {
         Sigar sigar = new Sigar();
         try {
     hostname = sigar.getNetInfo().getHostName();
         } catch (SigarException e) {
     hostname = "localhost.unknown";
         } finally {
     sigar.close();
         }
     }
     return hostname;
}
b) 取当前操作系统的信息
        publicvoid testGetOSInfo() {
           OperatingSystem OS = OperatingSystem.getInstance();
           // 操作系统内核类型如： 386、486、586等x86
           System.out.println("OS.getArch() = " + OS.getArch());
           System.out.println("OS.getCpuEndian() = " + OS.getCpuEndian());//
           System.out.println("OS.getDataModel() = " + OS.getDataModel());//
           // 系统描述
           System.out.println("OS.getDescription() = " + OS.getDescription());
           System.out.println("OS.getMachine() = " + OS.getMachine());//
           // 操作系统类型
           System.out.println("OS.getName() = " + OS.getName());
           System.out.println("OS.getPatchLevel() = " + OS.getPatchLevel());//
           // 操作系统的卖主
           System.out.println("OS.getVendor() = " + OS.getVendor());
           // 卖主名称
           System.out.println("OS.getVendorCodeName() = " + OS.getVendorCodeName());
           // 操作系统名称
           System.out.println("OS.getVendorName() = " + OS.getVendorName());
           // 操作系统卖主类型
           System.out.println("OS.getVendorVersion() = " + OS.getVendorVersion());
           // 操作系统的版本号
           System.out.println("OS.getVersion() = " + OS.getVersion());
}
c) 取当前系统进程表中的用户信息
publicvoid testWho() {
    try {
        Sigar sigar = new Sigar();
        Who who[] = sigar.getWhoList();
        if (who != null && who.length > 0) {
    for (int i = 0; i < who.length; i++) {
        Sysout.out.println("\n~~~~~~~~~" + String.valueOf(i) + "~~~~~~~~~");
        Who _who = who[i];
        Sysout.out.println ("getDevice() = " + _who.getDevice());
        Sysout.out.println ("getHost() = " + _who.getHost());
        Sysout.out.println ("getTime() = " + _who.getTime());
       //当前系统进程表中的用户名
        Sysout.out.println ("getUser() = " + _who.getUser());
    }
        }
    } catch (SigarException e) {
        e.printStackTrace();
    }
}
d) ……
4. 资源信息（主要是硬盘）
a) 取硬盘已有的分区及其详细信息（通过sigar.getFileSystemList()来获得FileSystem列表对象，然后对其进行编历）：
publicvoid testFileSystemInfo() throws Exception {
    Sigar sigar = getSigar();
    FileSystem fslist[] = sigar.getFileSystemList();
    String dir = System.getProperty("user.home");//当前用户文件夹路径
    for (int i = 0; i < fslist.length; i++) {
        System.out.println("\n~~~~~~~~~~" + i + "~~~~~~~~~~");
        FileSystem fs = fslist[i];
        // 分区的盘符名称
        System.out.println("fs.getDevName() = " + fs.getDevName());
        // 分区的盘符名称
        System.out.println("fs.getDirName() = " + fs.getDirName());
        System.out.println("fs.getFlags() = " + fs.getFlags());//
        // 文件系统类型，比如 FAT32、NTFS
        System.out.println("fs.getSysTypeName() = " + fs.getSysTypeName());
        // 文件系统类型名，比如本地硬盘、光驱、网络文件系统等
        System.out.println("fs.getTypeName() = " + fs.getTypeName());
        // 文件系统类型
        System.out.println("fs.getType() = " + fs.getType());
        FileSystemUsage usage = null;
        try {
    usage = sigar.getFileSystemUsage(fs.getDirName());
        } catch (SigarException e) {
    if (fs.getType() == 2)
        throw e;
    continue;
        }
        switch (fs.getType()) {
        case 0: // TYPE_UNKNOWN ：未知
    break;
        case 1: // TYPE_NONE
    break;
        case 2: // TYPE_LOCAL_DISK : 本地硬盘
    // 文件系统总大小
    System.out.println(" Total = " + usage.getTotal() + "KB");
    // 文件系统剩余大小
    System.out.println(" Free = " + usage.getFree() + "KB");
    // 文件系统可用大小
    System.out.println(" Avail = " + usage.getAvail() + "KB");
    // 文件系统已经使用量
    System.out.println(" Used = " + usage.getUsed() + "KB");
    double usePercent = usage.getUsePercent() * 100D;
    // 文件系统资源的利用率
    System.out.println(" Usage = " + usePercent + "%");
  break;
        case 3:// TYPE_NETWORK ：网络
    break;
        case 4:// TYPE_RAM_DISK ：闪存
    break;
        case 5:// TYPE_CDROM ：光驱
    break;
        case 6:// TYPE_SWAP ：页面交换
    break;
        }
        System.out.println(" DiskReads = " + usage.getDiskReads());
        System.out.println(" DiskWrites = " + usage.getDiskWrites());
    }
    return;
}
b) ……
5. 网络信息
a) 当前机器的正式域名
public String getFQDN(){
     try {
         return InetAddress.getLocalHost().getCanonicalHostName();
     } catch (UnknownHostException e) {
         try {
     Sigar sigar = new Sigar();
     return sigar.getFQDN();
         } catch (SigarException ex) {
     returnnull;
         } finally {
        sigar.close();
    }
     }
}
b) 取到当前机器的IP地址
public String getDefaultIpAddress() {
       String address = null;
       try {
    address = InetAddress.getLocalHost().getHostAddress();
    // 没有出现异常而正常当取到的IP时，如果取到的不是网卡循回地址时就返回
         // 否则再通过Sigar工具包中的方法来获取
       if (!NetFlags.LOOPBACK_ADDRESS.equals(address)) {
         return address;
    }
       } catch (UnknownHostException e) {
    //hostname not in DNS or /etc/hosts
       }
       Sigar sigar = new Sigar();
       try {
    address = sigar.getNetInterfaceConfig().getAddress();
       } catch (SigarException e) {
    address = NetFlags.LOOPBACK_ADDRESS;
       } finally {
    sigar.close();
       }
      return address;
}
c) 取到当前机器的MAC地址
public String getMAC() {
    Sigar sigar = null;
    try {
        sigar = new Sigar();
        String[] ifaces = sigar.getNetInterfaceList();
        String hwaddr = null;
        for (int i = 0; i < ifaces.length; i++) {
    NetInterfaceConfig cfg = sigar.getNetInterfaceConfig(ifaces[i]);
    if (NetFlags.LOOPBACK_ADDRESS.equals(cfg.getAddress())
    || (cfg.getFlags() & NetFlags.IFF_LOOPBACK) != 0
    || NetFlags.NULL_HWADDR.equals(cfg.getHwaddr())) {
        continue;
    }
    /*如果存在多张网卡包括虚拟机的网卡，默认只取第一张网卡的MAC地址，如果要返回所有的网卡（包括物理的和虚拟的）则可以修改方法的返回类型为数组或Collection，通过在for循环里取到的多个MAC地址。*/
    hwaddr = cfg.getHwaddr();
    break;
        }
        return hwaddr != null ? hwaddr : null;
    } catch (Exception e) {
        returnnull;
    } finally {
        if (sigar != null)
    sigar.close();
    }
}
d) 根据MAC地址来获得一个GUID号
public String getGUID(String mac) {
    if (mac == null)
        returnnull;
    EthernetAddress eAddr = new EthernetAddress(mac);
    return UUIDGenerator.getInstance().generateTimeBasedUUID(eAddr)
    .toString();
}
e) 获取网络流量等信息
publicvoid testNetIfList() throws Exception {
     Sigar sigar = new Sigar();
     String ifNames[] = sigar.getNetInterfaceList();
     for (int i = 0; i < ifNames.length; i++) {
         String name = ifNames[i];
         NetInterfaceConfig ifconfig = sigar.getNetInterfaceConfig(name);
         print("\nname = " + name);//网络设备名
         print("Address = "+ ifconfig.getAddress());//IP地址
         print("Netmask = "+ ifconfig.getNetmask());//子网掩码
         if ( (ifconfig.getFlags() & 1L) <= 0L) {
     print("!IFF_UP...skipping getNetInterfaceStat");
     continue;
         }
         try {
     NetInterfaceStat ifstat = sigar.getNetInterfaceStat(name);
     print("RxPackets = " + ifstat.getRxPackets());//接收的总包裹数
     print("TxPackets = " + ifstat.getTxPackets());//发送的总包裹数
     print("RxBytes = " + ifstat.getRxBytes());//接收到的总字节数
     print("TxBytes = " + ifstat.getTxBytes());//发送的总字节数
     print("RxErrors = " + ifstat.getRxErrors());//接收到的错误包数
     print("TxErrors = " + ifstat.getTxErrors());//发送数据包时的错误数
     print("RxDropped = " + ifstat.getRxDropped());//接收时丢弃的包数
     print("TxDropped = " + ifstat.getTxDropped());//发送时丢弃的包数
         } catch (SigarNotImplementedException e) {
         } catch (SigarException e) {
     print(e.getMessage());
         }
     }
}
void print(String msg){
     System.out.println(msg);
}
f) 一些其他的信息
  privatevoid getEthernetInfo(){
     Sigar sigar = null;
     try {
         sigar = new Sigar();
         String[] ifaces = sigar.getNetInterfaceList();
         for (int i = 0; i < ifaces.length; i++) {
     NetInterfaceConfig cfg = sigar.getNetInterfaceConfig(ifaces[i]);
     if (NetFlags.LOOPBACK_ADDRESS.equals(cfg.getAddress())
     || (cfg.getFlags() & NetFlags.IFF_LOOPBACK) != 0
     || NetFlags.NULL_HWADDR.equals(cfg.getHwaddr())) {
         continue;
     }
     System.out.println("cfg.getAddress() = " + cfg.getAddress());//IP地址
     System.out.println("cfg.getBroadcast() = " + cfg.getBroadcast());//网关广播地址
     System.out.println("cfg.getHwaddr() = " + cfg.getHwaddr());//网卡MAC地址
     System.out.println("cfg.getNetmask() = " + cfg.getNetmask());//子网掩码
     System.out.println("cfg.getDescription() = " + cfg.getDescription());//网卡描述信息
     System.out.println("cfg.getType() = " + cfg.getType());//
     System.out.println("cfg.getDestination() = " + cfg.getDestination());
     System.out.println("cfg.getFlags() = " + cfg.getFlags());//
     System.out.println("cfg.getMetric() = " + cfg.getMetric());
     System.out.println("cfg.getMtu() = " + cfg.getMtu());
     System.out.println("cfg.getName() = " + cfg.getName());
     System.out.println();
         }
     } catch (Exception e) {
         System.out.println("Error while creating GUID" + e);
     } finally {
         if (sigar != null)
     sigar.close();
     }
}