use of com.sohu.cache.ssh.SSHTemplate.LineProcessor in project cachecloud by sohutv.
the class SSHUtil method getMachineInfo.
/**
* Get HostPerformanceEntity[cpuUsage, memUsage, load] by ssh.<br>
* 方法返回前已经释放了所有资源,调用方不需要关心
*
* @param ip
* @param userName
* @param password
* @throws Exception
* @since 1.0.0
*/
public static MachineStats getMachineInfo(String ip, int port, String userName, String password) throws SSHException {
if (StringUtil.isBlank(ip)) {
try {
throw new IllegalParamException("Param ip is empty!");
} catch (IllegalParamException e) {
throw new SSHException(e.getMessage(), e);
}
}
port = IntegerUtil.defaultIfSmallerThan0(port, ConstUtils.SSH_PORT_DEFAULT);
final MachineStats systemPerformanceEntity = new MachineStats();
systemPerformanceEntity.setIp(ip);
sshTemplate.execute(ip, port, userName, password, new SSHCallback() {
public Result call(SSHSession session) {
//解析top命令
session.executeCommand(COMMAND_TOP, new DefaultLineProcessor() {
public void process(String line, int lineNum) throws Exception {
if (lineNum > 5) {
return;
}
if (1 == lineNum) {
// 第一行,通常是这样:
// top - 19:58:52 up 416 days, 30 min, 1 user, load average:
// 0.00, 0.00, 0.00
int loadAverageIndex = line.indexOf(LOAD_AVERAGE_STRING);
String loadAverages = line.substring(loadAverageIndex).replace(LOAD_AVERAGE_STRING, EMPTY_STRING);
String[] loadAverageArray = loadAverages.split(",");
if (3 == loadAverageArray.length) {
systemPerformanceEntity.setLoad(StringUtil.trimToEmpty(loadAverageArray[0]));
}
} else if (3 == lineNum) {
// 第三行通常是这样:
// , 0.0% sy, 0.0% ni, 100.0% id, 0.0% wa,
// 0.0% hi, 0.0% si
// redhat:%Cpu(s): 0.0 us
// centos7:Cpu(s): 0.0% us
double cpuUs = getUsCpu(line);
systemPerformanceEntity.setCpuUsage(String.valueOf(cpuUs));
}
}
});
//解析memory
session.executeCommand(COMMAND_MEM, new LineProcessor() {
private String totalMem;
private String freeMem;
private String buffersMem;
private String cachedMem;
public void process(String line, int lineNum) throws Exception {
if (line.contains(MEM_TOTAL)) {
totalMem = matchMemLineNumber(line).trim();
} else if (line.contains(MEM_FREE)) {
freeMem = matchMemLineNumber(line).trim();
} else if (line.contains(MEM_BUFFERS)) {
buffersMem = matchMemLineNumber(line).trim();
} else if (line.contains(MEM_CACHED)) {
cachedMem = matchMemLineNumber(line).trim();
}
}
public void finish() {
if (!StringUtil.isBlank(totalMem, freeMem, buffersMem)) {
Long totalMemLong = NumberUtils.toLong(totalMem);
Long freeMemLong = NumberUtils.toLong(freeMem);
Long buffersMemLong = NumberUtils.toLong(buffersMem);
Long cachedMemLong = NumberUtils.toLong(cachedMem);
Long usedMemFree = freeMemLong + buffersMemLong + cachedMemLong;
Double memoryUsage = 1 - (NumberUtils.toDouble(usedMemFree.toString()) / NumberUtils.toDouble(totalMemLong.toString()) / 1.0);
systemPerformanceEntity.setMemoryTotal(String.valueOf(totalMemLong));
systemPerformanceEntity.setMemoryFree(String.valueOf(usedMemFree));
DecimalFormat df = new DecimalFormat("0.00");
systemPerformanceEntity.setMemoryUsageRatio(df.format(memoryUsage * 100));
}
}
});
// 统计磁盘使用状况
/**
* 内容通常是这样: Filesystem 容量 已用 可用 已用% 挂载点 /dev/xvda2 5.8G 3.2G 2.4G
* 57% / /dev/xvda1 99M 8.0M 86M 9% /boot none 769M 0 769M 0%
* /dev/shm /dev/xvda7 68G 7.1G 57G 12% /home /dev/xvda6 2.0G 36M
* 1.8G 2% /tmp /dev/xvda5 2.0G 199M 1.7G 11% /var
* */
session.executeCommand(COMMAND_DF_LH, new LineProcessor() {
private Map<String, String> diskUsageMap = new HashMap<String, String>();
public void process(String line, int lineNum) throws Exception {
if (lineNum == 1) {
return;
}
line = line.replaceAll(" {1,}", WORD_SEPARATOR);
String[] lineArray = line.split(WORD_SEPARATOR);
if (6 == lineArray.length) {
String diskUsage = lineArray[4];
String mountedOn = lineArray[5];
diskUsageMap.put(mountedOn, diskUsage);
}
}
public void finish() {
systemPerformanceEntity.setDiskUsageMap(diskUsageMap);
}
});
return null;
}
});
// 统计当前网络流量 @TODO
Double traffic = 0.0;
systemPerformanceEntity.setTraffic(traffic.toString());
return systemPerformanceEntity;
}
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