1 files changed, 34 insertions, 24 deletions

diff --git a/dozentenmodul/src/main/java/ftp/UploadTask.java b/dozentenmodul/src/main/java/ftp/UploadTask.java
index eff96d68..40a79f55 100644
--- a/dozentenmodul/src/main/java/ftp/UploadTask.java
+++ b/dozentenmodul/src/main/java/ftp/UploadTask.java
@@ -18,14 +18,18 @@ import models.Image;
  * 
  */
 public class UploadTask extends SwingWorker<Void, Void> {
-	
+
 	/**
-	 * Logger instance for this class. 
+	 * Logger instance for this class.
 	 */
 	private final static Logger LOGGER = Logger.getLogger(UploadTask.class);
-	
+
 	// 8MB buffer
-	private static final int BUFFER_SIZE = 8 * 1024 * 1024;;
+	private static final int BUFFER_SIZE = 1024 * 1024;
+
+	private static final double UPDATE_INTERVAL_SECONDS = 0.6;
+	private static final double UPDATE_INTERVAL_MS = UPDATE_INTERVAL_SECONDS * 1000;
+	private static final double BYTES_PER_MIB = 1024 * 1024;
 
 	private String host;
 	private int port;
@@ -64,21 +68,28 @@ public class UploadTask extends SwingWorker<Void, Void> {
 			percentCompleted = 0;
 			long fileSize = uploadFile.length();
 			Image.image.setFilesize(fileSize);
-			long start = System.nanoTime();
-			final double NANOS_PER_SECOND = 1000000000.0;
-			final double BYTES_PER_MIB = 1024 * 1024;
-			while ((bytesRead = inputStream.read(buffer)) != -1
-					&& isCancelled() == false) {
+			firePropertyChange("filesize", 0, fileSize);
+			long lastUpdate = 0;
+			long currentBytes = 0;
+			long lastBytes = 0;
+			while ((bytesRead = inputStream.read(buffer)) != -1 && !isCancelled()) {
 				util.writeFileBytes(buffer, 0, bytesRead);
-				totalBytesRead += bytesRead;
-				percentCompleted = (int) (totalBytesRead * 100 / fileSize);
-				double speed = NANOS_PER_SECOND / BYTES_PER_MIB
-						* totalBytesRead / (System.nanoTime() - start + 1);
-				setProgress(percentCompleted);
-				firePropertyChange("speed", 0, speed);
-				firePropertyChange("filesize", 0, fileSize);
-				firePropertyChange("bytesread", 0, totalBytesRead);
+				currentBytes += bytesRead;
+				long now = System.currentTimeMillis();
+				if (lastUpdate + UPDATE_INTERVAL_MS < now) {
+					totalBytesRead += currentBytes;
+					percentCompleted = (int) ((totalBytesRead * 100) / fileSize);
+					setProgress(percentCompleted);
+					lastBytes = (lastBytes * 2 + currentBytes) / 3;
+					final double speed = lastBytes / UPDATE_INTERVAL_SECONDS;
+					firePropertyChange("speed", 0, speed / BYTES_PER_MIB);
+					firePropertyChange("bytesread", 0, totalBytesRead);
+					lastUpdate = now;
+					currentBytes = 0;
+				}
 			}
+			percentCompleted = (int) ((totalBytesRead * 100) / fileSize);
+			setProgress(percentCompleted);
 
 			inputStream.close();
 
@@ -102,16 +113,15 @@ public class UploadTask extends SwingWorker<Void, Void> {
 	 */
 	@Override
 	protected void done() {
-		if (!isCancelled() && percentCompleted==100) {
+		if (!isCancelled() && percentCompleted == 100) {
 			LOGGER.info("Datei erfolgreich hochgeladen.");
-			JOptionPane.showMessageDialog(null,
-					"Datei erfolgreich hochgeladen.", "Message",
-					JOptionPane.INFORMATION_MESSAGE);
-		} else if(!isCancelled() && percentCompleted != 100){
+			JOptionPane.showMessageDialog(null, "Datei erfolgreich hochgeladen.",
+					"Message", JOptionPane.INFORMATION_MESSAGE);
+		} else if (!isCancelled() && percentCompleted != 100) {
 			LOGGER.error("Datei wurde unvollständig hochgeladen.");
 			JOptionPane.showMessageDialog(null,
-					"Datei wurde unvollständig hochgeladen. Bitte wiederholen.", "Message",
-					JOptionPane.INFORMATION_MESSAGE);
+					"Datei wurde unvollständig hochgeladen. Bitte wiederholen.",
+					"Message", JOptionPane.INFORMATION_MESSAGE);
 		}
 	}
 }