@POST
@Produces({MediaType.APPLICATION_JSON, MediaType.APPLICATION_XML})
@Path("/start")
public Response startMemoryMonitor() {
timeMonitor = null;
timeMonitor = new Timer();
TimerTask scanTask =
new TimerTask() {
IMemoryDAO mdao = DAOFactory.getInstance().getMemoryDAO();
MemoryPO memDetails = new MemoryPO();
DateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm");
@Override
public void run() {
/*Runtime rt=Runtime.getRuntime();
long freeVMemory = rt.freeMemory()/1024;
long totalVMemory = rt.totalMemory()/1024;
long usedVMemory = totalVMemory-freeVMemory;*/
OperatingSystemMXBean bean =
(com.sun.management.OperatingSystemMXBean)
ManagementFactory.getOperatingSystemMXBean();
long maxMemory = bean.getTotalPhysicalMemorySize() / 1024;
long freeVMemory = bean.getFreePhysicalMemorySize() / 1024;
long usedVMemory = maxMemory - freeVMemory;
long freeSpace = 0;
long usedSpace = 0;
for (java.nio.file.Path root : FileSystems.getDefault().getRootDirectories()) {
try {
FileStore store = Files.getFileStore(root);
freeSpace = store.getUnallocatedSpace() / 1024;
usedSpace = ((store.getTotalSpace() / 1024) - (store.getUnallocatedSpace() / 1024));
} catch (FileSystemException e) {
Log.trace(e.toString());
} catch (IOException e) {
Log.trace(e.toString());
}
}
memDetails.setUsedVolatile(usedVMemory);
memDetails.setRemainingVolatile(freeVMemory);
memDetails.setUsedPersistent(usedSpace);
memDetails.setRemainingPersistent(freeSpace);
Calendar calendar = Calendar.getInstance();
memDetails.setCreatedAt(df.format(calendar.getTime()));
mdao.insertMemoryStats(memDetails);
}
};
timeMonitor.schedule(scanTask, 0, 60000);
return ok();
}
@POST
@Path("/stop")
public void stopMemoryMonitor() {
timeMonitor.cancel();
Log.trace("Memory Monitor Stopped");
}