BytesRecorder.java

package org.webpieces.nio.api.integ;

import java.util.Timer;
import java.util.TimerTask;

import org.webpieces.util.logging.Logger;
import org.webpieces.util.logging.LoggerFactory;

public class BytesRecorder {

	private static final Logger log = LoggerFactory.getLogger(BytesRecorder.class);
	private Timer timer = new Timer();
	
	private long totalBytes = 0;
	private long totalBytesLastRount;
	private long lastTime;
	
	private void logBytesTxfrd() {
		long bytesTxfrd = getBytes();
		long bytesThisRound = bytesTxfrd - totalBytesLastRount;
		totalBytesLastRount = bytesTxfrd;

		long now = System.currentTimeMillis();
		long roundTime = now - lastTime;
		lastTime = now;
		long roundBytesPerMs = bytesThisRound / roundTime;
		double megaRoundPerMs = ((double)roundBytesPerMs) / 1_000_000;
		double megaRoundPerSec = megaRoundPerMs * 1000;
		log.info("this round="+megaRoundPerSec+"MBytes/Sec.  bytes=" +bytesThisRound+" totalBytes="+bytesTxfrd);
	}
	
	private synchronized long getBytes() {
		return totalBytes;
	}

	protected synchronized void recordBytes(int size) {
		totalBytes += size;
	}
	
	public void start() {
		timer.schedule(new TimerTask() {
			@Override
			public void run() {
				logBytesTxfrd();
			}
		}, 1000, 5000);		
	}
}