Java tutorial
/** * This program is free software: you can redistribute it and/or modify it under * the terms of the GNU General Public License as published by the Free Software * Foundation, either version 3 of the License, or (at your option) any later * version. * * This program is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more * details. * * You should have received a copy of the GNU General Public License along with * this program. If not, see <http://www.gnu.org/licenses/>. * */ package cloudExplorer; import com.amazonaws.auth.AWSCredentials; import com.amazonaws.auth.BasicAWSCredentials; import com.amazonaws.services.s3.AmazonS3; import com.amazonaws.services.s3.AmazonS3Client; import com.amazonaws.services.s3.model.GetObjectRequest; import com.amazonaws.services.s3.model.S3Object; import java.io.File; import java.io.FileOutputStream; import java.io.InputStream; import static cloudExplorer.NewJFrame.jTextArea1; import com.amazonaws.AmazonServiceException; import com.amazonaws.ClientConfiguration; public class Get implements Runnable { String Home = System.getProperty("user.home"); NewJFrame mainFrame; String what = null; String access_key = null; String bucket = null; String endpoint = null; String secret_key = null; String destination = null; String version = null; Thread get; public static Boolean debug = false; public static Boolean terminal = false; public void calibrate() { try { jTextArea1.setCaretPosition(jTextArea1.getLineStartOffset(jTextArea1.getLineCount() - 1)); } catch (Exception e) { } } Get(String Awhat, String Aaccess_key, String Asecret_key, String Abucket, String Aendpoint, String Adestination, String Aversion) { what = Awhat; access_key = Aaccess_key; secret_key = Asecret_key; bucket = Abucket; endpoint = Aendpoint; destination = Adestination; version = Aversion; } void writeFile(InputStream is, String destination) { try { FileOutputStream fo = new FileOutputStream(destination); int read = 0; byte[] bytes = new byte[1024]; while ((read = is.read(bytes)) != -1) { fo.write(bytes, 0, read); } fo.close(); } catch (Exception add) { if (debug) { System.out.print("\n\n\n" + add.getMessage() + "\n\n\n"); } } } public void run() { String message = null; AWSCredentials credentials = new BasicAWSCredentials(access_key, secret_key); File file = new File(what); AmazonS3 s3Client = new AmazonS3Client(credentials, new ClientConfiguration().withSignerOverride("S3SignerType")); s3Client.setEndpoint(endpoint); try { long t1 = System.currentTimeMillis(); S3Object s3object = s3Client.getObject(new GetObjectRequest(bucket, what, version)); InputStream objectData = s3object.getObjectContent(); this.writeFile(objectData, destination); long t2 = System.currentTimeMillis(); long diff = t2 - t1; if (!mainFrame.perf) { if (terminal) { System.out.print("\nDownloaded: " + what + " in " + diff / 1000 + " second(s).\n"); } else { mainFrame.jTextArea1.append("\nDownloaded: " + what + " in " + diff / 1000 + " second(s)."); mainFrame.calibrateTextArea(); } } } catch (AmazonServiceException ase) { if (NewJFrame.gui) { mainFrame.jTextArea1.append("\n\nError Message: " + ase.getMessage()); mainFrame.jTextArea1.append("\nHTTP Status Code: " + ase.getStatusCode()); mainFrame.jTextArea1.append("\nAWS Error Code: " + ase.getErrorCode()); mainFrame.jTextArea1.append("\nError Type: " + ase.getErrorType()); mainFrame.jTextArea1.append("\nRequest ID: " + ase.getRequestId()); calibrate(); } else { System.out.print("\n\nError Message: " + ase.getMessage()); System.out.print("\nHTTP Status Code: " + ase.getStatusCode()); System.out.print("\nAWS Error Code: " + ase.getErrorCode()); System.out.print("\nError Type: " + ase.getErrorType()); System.out.print("\nRequest ID: " + ase.getRequestId()); } } catch (Exception get) { } calibrate(); } void startc(String Awhat, String Aaccess_key, String Asecret_key, String Abucket, String Aendpoint, String Adestination, String Aversion) { get = new Thread(new Get(Awhat, Aaccess_key, Asecret_key, Abucket, Aendpoint, Adestination, Aversion)); get.start(); if (NewJFrame.perf) { try { get.join(); File delete_temp = new File(destination); if (delete_temp.exists()) { delete_temp.delete(); } } catch (Exception get) { } } } void stop() { get.stop(); mainFrame.jTextArea1.setText("\nDownload completed or aborted.\n"); } }