@Override
public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
PerformanceMonitor.begin(target.getClass().getName() + "." + method.getName());
Object obj = method.invoke(target, args);
PerformanceMonitor.end();
return obj;
}
@SuppressWarnings("deprecation")
public void report() {
for (PerformanceMonitor m : monitors.values()) {
logger.info(m.report());
}
logger.info("Manager reported at " + new Date().toLocaleString());
}
public CachingPerformanceMonitor(final PerformanceMonitor performanceMonitor) {
cachedSystemResourcesInfo = performanceMonitor.createResourcesInfo();
Thread thread =
new Thread() {
@Override
public void run() {
super.run();
try {
cachedSystemResourcesInfo = performanceMonitor.createResourcesInfo();
Thread.sleep(500);
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
}
}
};
thread.setDaemon(true);
thread.start();
}
public DataBuffer getServerStatus(int version) {
DataBuffer buffer = new DataBuffer();
// system info
double cpu = roundToDecimals(cpuMonitor.getCpuUsage() * 100, 2);
long freeMem = Runtime.getRuntime().freeMemory();
long maxMem = Runtime.getRuntime().maxMemory();
long totalMem = Runtime.getRuntime().totalMemory();
buffer.writeDouble(cpu);
buffer.writeLong(freeMem);
buffer.writeLong(maxMem);
buffer.writeLong(totalMem);
// threads list
long totalThreadsCpuTime = 0;
long[] threadIds = ManagementFactory.getThreadMXBean().getAllThreadIds();
buffer.writeInt(threadIds.length); // 多少条线程.
for (int i = 0; i < threadIds.length; i++) {
long id = threadIds[i];
String name = ManagementFactory.getThreadMXBean().getThreadInfo(id).getThreadName();
long cpuTime = 0;
if (ManagementFactory.getThreadMXBean().isThreadCpuTimeSupported()
&& ManagementFactory.getThreadMXBean().isThreadCpuTimeEnabled()) {
cpuTime = ManagementFactory.getThreadMXBean().getThreadCpuTime(id);
totalThreadsCpuTime += cpuTime;
}
buffer.writeLong(id);
buffer.writeString(name);
buffer.writeLong(cpuTime);
}
buffer.writeLong(totalThreadsCpuTime);
return buffer;
}
public Dashboard() {
// Create CPU monitoring class
cpuMonitor = new PerformanceMonitor();
cpuMonitor.getCpuUsage(); // Set baseline
}
public void register(PerformanceMonitor m) {
monitors.put(m.getName(), m);
}
