S3TransferProgressSample.java

/*
 * Copyright 2010-2012 Amazon.com, Inc. or its affiliates. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License").
 * You may not use this file except in compliance with the License.
 * A copy of the License is located at
 *
 *  http://aws.amazon.com/apache2.0
 *
 * or in the "license" file accompanying this file. This file is distributed
 * on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
 * express or implied. See the License for the specific language governing
 * permissions and limitations under the License.
 */
import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;

import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JProgressBar;

import com.amazonaws.AmazonClientException;
import com.amazonaws.auth.AWSCredentials;
import com.amazonaws.auth.PropertiesCredentials;
import com.amazonaws.services.s3.model.ProgressEvent;
import com.amazonaws.services.s3.model.ProgressListener;
import com.amazonaws.services.s3.model.PutObjectRequest;
import com.amazonaws.services.s3.transfer.TransferManager;
import com.amazonaws.services.s3.transfer.Upload;

/**
 * Demonstrates how to upload data to Amazon S3, and track progress, using a
 * Swing progress bar.
 * <p>
 * <b>Prerequisites:</b> You must have a valid Amazon Web Services developer
 * account, and be signed up to use Amazon S3. For more information on
 * Amazon S3, see http://aws.amazon.com/s3.
 * <p>
 * <b>Important:</b> Be sure to fill in your AWS access credentials in the
 *                   AwsCredentials.properties file before you try to run this
 *                   sample.
 * http://aws.amazon.com/security-credentials
 */
public class S3TransferProgressSample {

    private static AWSCredentials credentials;
    private static TransferManager tx;
    private static String bucketName;
    
    private JProgressBar pb;
    private JFrame frame;
    private Upload upload;
    private JButton button;

    public static void main(String[] args) throws Exception {
        credentials = new PropertiesCredentials(S3TransferProgressSample.class
                .getResourceAsStream("AwsCredentials.properties"));

        // TransferManager manages a pool of threads, so we create a
        // single instance and share it throughout our application.
        tx = new TransferManager(credentials);
        
        bucketName = "s3-upload-sdk-sample-" + credentials.getAWSAccessKeyId().toLowerCase();
        
        new S3TransferProgressSample();
    }

    public S3TransferProgressSample() throws Exception {
        frame = new JFrame("Amazon S3 File Upload");
        button = new JButton("Choose File...");
        button.addActionListener(new ButtonListener());

        pb = new JProgressBar(0, 100);
        pb.setStringPainted(true);

        frame.setContentPane(createContentPane());
        frame.pack();
        frame.setVisible(true);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    }

    class ButtonListener implements ActionListener {
        public void actionPerformed(ActionEvent ae) {
            JFileChooser fileChooser = new JFileChooser();
            int showOpenDialog = fileChooser.showOpenDialog(frame);
            if (showOpenDialog != JFileChooser.APPROVE_OPTION) return;
            
            createAmazonS3Bucket();
            
            ProgressListener progressListener = new ProgressListener() {
                public void progressChanged(ProgressEvent progressEvent) {
                    if (upload == null) return;
                    
                    pb.setValue((int)upload.getProgress().getPercentTransfered());
                    
                    switch (progressEvent.getEventCode()) {
                    case ProgressEvent.COMPLETED_EVENT_CODE:
                        pb.setValue(100);
                        break;
                    case ProgressEvent.FAILED_EVENT_CODE:
                        try {
                            AmazonClientException e = upload.waitForException();
                            JOptionPane.showMessageDialog(frame, 
                                    "Unable to upload file to Amazon S3: " + e.getMessage(), 
                                    "Error Uploading File", JOptionPane.ERROR_MESSAGE);
                        } catch (InterruptedException e) {}
                        break;
                    }
                }
            };
            
            File fileToUpload = fileChooser.getSelectedFile();
            PutObjectRequest request = new PutObjectRequest(
                    bucketName, fileToUpload.getName(), fileToUpload)
                .withProgressListener(progressListener);
            upload = tx.upload(request);
        }
    }
    
    private void createAmazonS3Bucket() {
        try {
            if (tx.getAmazonS3Client().doesBucketExist(bucketName) == false) {
                tx.getAmazonS3Client().createBucket(bucketName);
            }
        } catch (AmazonClientException ace) {
            JOptionPane.showMessageDialog(frame, "Unable to create a new Amazon S3 bucket: " + ace.getMessage(), 
                    "Error Creating Bucket", JOptionPane.ERROR_MESSAGE);
        }
    }
    
    private JPanel createContentPane() {
        JPanel panel = new JPanel();
        panel.add(button);
        panel.add(pb);

        JPanel borderPanel = new JPanel();
        borderPanel.setLayout(new BorderLayout());
        borderPanel.add(panel, BorderLayout.NORTH);
        borderPanel.setBorder(BorderFactory.createEmptyBorder(20, 20, 20, 20));
        return borderPanel;
    }
}