import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
+import java.io.InputStream;
+import java.io.RandomAccessFile;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.CompletableFuture;
return downloadedFile;
}
+ public File downloadFileWithResume(String collectionUuid, String fileName, String pathToDownloadFolder, long start, Long end) throws IOException {
+ if (end != null && end < start) {
+ throw new IllegalArgumentException("End index must be greater than or equal to the start index");
+ }
+
+ File destinationFile = new File(pathToDownloadFolder, fileName);
+
+ if (!destinationFile.exists()) {
+ boolean isCreated = destinationFile.createNewFile();
+ if (!isCreated) {
+ throw new IOException("Failed to create new file: " + destinationFile.getAbsolutePath());
+ }
+ }
+
+ try (RandomAccessFile outputFile = new RandomAccessFile(destinationFile, "rw");
+ InputStream inputStream = keepWebApiClient.get(collectionUuid, fileName, start, end)) {
+ outputFile.seek(start);
+
+ long remaining = (end == null) ? Long.MAX_VALUE : end - start + 1;
+ byte[] buffer = new byte[4096];
+ int bytesRead;
+ while ((bytesRead = inputStream.read(buffer)) != -1 && remaining > 0) {
+ int bytesToWrite = (int) Math.min(bytesRead, remaining);
+ outputFile.write(buffer, 0, bytesToWrite);
+ remaining -= bytesToWrite;
+ }
+ }
+
+ return destinationFile;
+ }
+
public List<File> downloadFilesFromCollectionUsingKeepWeb(String collectionUuid, String pathToDownloadFolder) {
String collectionTargetDir = setTargetDirectory(collectionUuid, pathToDownloadFolder).getAbsolutePath();
List<FileToken> fileTokens = listFileInfoFromCollection(collectionUuid);