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package ftp;
import java.io.File;
import java.io.FileInputStream;
import javax.swing.JOptionPane;
import javax.swing.SwingWorker;
/**
* Executes the file upload in a background thread and updates progress to
* listeners that implement the java.beans.PropertyChangeListener interface.
* @author www.codejava.net
*
*/
public class UploadTask extends SwingWorker<Void, Void> {
private static final int BUFFER_SIZE = 4096;
private String host;
private int port;
private String username;
private String password;
private String destDir;
private File uploadFile;
public UploadTask(String host, int port, String username, String password,
String destDir, File uploadFile) {
this.host = host;
this.port = port;
this.username = username;
this.password = password;
this.destDir = destDir;
this.uploadFile = uploadFile;
}
/**
* Executed in background thread
*/
@Override
protected Void doInBackground() throws Exception {
FTPUtility util = new FTPUtility(host, port, username, password);
try {
util.connect();
util.uploadFile(uploadFile, destDir);
FileInputStream inputStream = new FileInputStream(uploadFile);
byte[] buffer = new byte[BUFFER_SIZE];
int bytesRead = -1;
long totalBytesRead = 0;
int percentCompleted = 0;
long fileSize = uploadFile.length();
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) {
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);
}
inputStream.close();
util.finish();
} catch (FTPException ex) {
JOptionPane.showMessageDialog(null, "Error uploading file: " + ex.getMessage(),
"Error", JOptionPane.ERROR_MESSAGE);
ex.printStackTrace();
setProgress(0);
cancel(true);
} finally {
util.disconnect();
}
return null;
}
/**
* Executed in Swing's event dispatching thread
*/
@Override
protected void done() {
if (!isCancelled()) {
JOptionPane.showMessageDialog(null,
"File has been uploaded successfully!", "Message",
JOptionPane.INFORMATION_MESSAGE);
}
}
}
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