Example usage for com.amazonaws.services.s3.model S3ObjectSummary getKey

List of usage examples for com.amazonaws.services.s3.model S3ObjectSummary getKey

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Introduction

In this page you can find the example usage for com.amazonaws.services.s3.model S3ObjectSummary getKey.

Prototype

public String getKey()

Source Link

Document

Gets the key under which this object is stored in Amazon S3.

Usage

From source file:com.haskins.cloudtrailviewer.dialog.S3FileChooser.java

License:Open Source License

private void reloadContents() {

    loadingLabel.setVisible(true);//  w  w w.j  av a2s  .c om
    this.s3ListModel.clear();

    String bucketName = currentAccount.getBucket();

    ListObjectsRequest listObjectsRequest = new ListObjectsRequest();
    listObjectsRequest.setBucketName(bucketName);
    listObjectsRequest.setPrefix(prefix);
    listObjectsRequest.setDelimiter("/");

    AWSCredentials credentials = new BasicAWSCredentials(currentAccount.getKey(), currentAccount.getSecret());

    AmazonS3 s3Client = new AmazonS3Client(credentials);

    try {
        ObjectListing objectListing = s3Client.listObjects(listObjectsRequest);

        // Add .. if not at root
        if (prefix.trim().length() != 0) {
            S3ListModel model = new S3ListModel(MOVE_BACK, MOVE_BACK, S3ListModel.FILE_BACK);
            this.s3ListModel.addElement(model);
        }

        // these are directories
        List<String> directories = objectListing.getCommonPrefixes();
        for (String directory : directories) {

            String dir = stripPrefix(directory);
            int lastSlash = dir.lastIndexOf("/");
            String strippeDir = dir.substring(0, lastSlash);

            String alias = dir;
            if (isAccountNumber(strippeDir)) {
                if (aliasMap.containsKey(strippeDir)) {
                    alias = aliasMap.get(strippeDir);
                }
            }

            S3ListModel model = new S3ListModel(dir, alias, S3ListModel.FILE_DIR);
            this.s3ListModel.addElement(model);
        }

        // these are files
        List<S3ObjectSummary> objectSummaries = objectListing.getObjectSummaries();
        for (final S3ObjectSummary objectSummary : objectSummaries) {

            String file = stripPrefix(objectSummary.getKey());

            S3ListModel model = new S3ListModel(file, file, S3ListModel.FILE_DOC);
            this.s3ListModel.addElement(model);
        }

        loadingLabel.setVisible(false);
    } catch (Exception e) {
        e.printStackTrace();
    }
}

From source file:com.ibm.stocator.fs.cos.COSAPIClient.java

License:Apache License

private FileStatus createFileStatus(S3ObjectSummary objSummary, String hostName, Path path)
        throws IllegalArgumentException, IOException {
    String objKey = objSummary.getKey();
    String newMergedPath = getMergedPath(hostName, path, objKey);
    return createFileStatus(objSummary.getSize(), objKey, objSummary.getLastModified(),
            new Path(newMergedPath));
}

From source file:com.ibm.stocator.fs.cos.COSAPIClient.java

License:Apache License

/**
 * {@inheritDoc}/*from w  w w.  j av a2  s. c  om*/
 *
 * Prefix based
 * Return everything that starts with the prefix
 * Fill listing
 * Return all objects, even zero size
 * If fileStatus is null means the path is part of some name, neither object
 * or pseudo directory. Was called by Globber
 *
 * @param hostName hostName
 * @param path path
 * @param fullListing Return all objects, even zero size
 * @param prefixBased Return everything that starts with the prefix
 * @return list
 * @throws IOException if error
 */
/*
public FileStatus[] list(String hostName, Path path, boolean fullListing,
    boolean prefixBased) throws IOException {
  String key = pathToKey(hostName, path);
  ArrayList<FileStatus> tmpResult = new ArrayList<FileStatus>();
  ListObjectsRequest request = new ListObjectsRequest().withBucketName(mBucket).withPrefix(key);
        
  String curObj;
  if (path.toString().equals(mBucket)) {
    curObj = "";
  } else if (path.toString().startsWith(mBucket + "/")) {
    curObj = path.toString().substring(mBucket.length() + 1);
  } else if (path.toString().startsWith(hostName)) {
    curObj = path.toString().substring(hostName.length());
  } else {
    curObj = path.toString();
  }
        
  ObjectListing objectList = mClient.listObjects(request);
  List<S3ObjectSummary> objectSummaries = objectList.getObjectSummaries();
  if (objectSummaries.size() == 0) {
    FileStatus[] emptyRes = {};
    LOG.debug("List for bucket {} is empty", mBucket);
    return emptyRes;
  }
  boolean objectScanContinue = true;
  S3ObjectSummary prevObj = null;
  while (objectScanContinue) {
    for (S3ObjectSummary obj : objectSummaries) {
if (prevObj == null) {
  prevObj = obj;
  continue;
}
String objKey = obj.getKey();
String unifiedObjectName = extractUnifiedObjectName(objKey);
if (!prefixBased && !curObj.equals("") && !path.toString().endsWith("/")
    && !unifiedObjectName.equals(curObj) && !unifiedObjectName.startsWith(curObj + "/")) {
  LOG.trace("{} does not match {}. Skipped", unifiedObjectName, curObj);
  continue;
}
if (isSparkOrigin(unifiedObjectName) && !fullListing) {
  LOG.trace("{} created by Spark", unifiedObjectName);
  if (!isJobSuccessful(unifiedObjectName)) {
    LOG.trace("{} created by failed Spark job. Skipped", unifiedObjectName);
    if (fModeAutomaticDelete) {
      delete(hostName, new Path(objKey), true);
    }
    continue;
  } else {
    // if we here - data created by spark and job completed
    // successfully
    // however there be might parts of failed tasks that
    // were not aborted
    // we need to make sure there are no failed attempts
    if (nameWithoutTaskID(objKey).equals(nameWithoutTaskID(prevObj.getKey()))) {
      // found failed that was not aborted.
      LOG.trace("Colisiion found between {} and {}", prevObj.getKey(), objKey);
      if (prevObj.getSize() < obj.getSize()) {
        LOG.trace("New candidate is {}. Removed {}", obj.getKey(), prevObj.getKey());
        prevObj = obj;
      }
      continue;
    }
  }
}
if (prevObj.getSize() > 0 || fullListing) {
  FileStatus fs = getFileStatusObjSummaryBased(prevObj, hostName, path);
  tmpResult.add(fs);
}
prevObj = obj;
    }
    boolean isTruncated = objectList.isTruncated();
    if (isTruncated) {
objectList = mClient.listNextBatchOfObjects(objectList);
objectSummaries = objectList.getObjectSummaries();
    } else {
objectScanContinue = false;
    }
  }
  if (prevObj != null && (prevObj.getSize() > 0 || fullListing)) {
    FileStatus fs = getFileStatusObjSummaryBased(prevObj, hostName, path);
    tmpResult.add(fs);
  }
  if (LOG.isTraceEnabled()) {
    LOG.trace("COS List to return length {}", tmpResult.size());
    for (FileStatus fs: tmpResult) {
LOG.trace("{}", fs.getPath());
    }
  }
  return tmpResult.toArray(new FileStatus[tmpResult.size()]);
}
*/
@Override
public FileStatus[] list(String hostName, Path path, boolean fullListing, boolean prefixBased,
        Boolean isDirectory, boolean flatListing, PathFilter filter) throws FileNotFoundException, IOException {
    LOG.debug("Native direct list status for {}", path);
    ArrayList<FileStatus> tmpResult = new ArrayList<FileStatus>();
    String key = pathToKey(hostName, path);
    if (isDirectory != null && isDirectory.booleanValue() && !key.endsWith("/")) {
        key = key + "/";
        LOG.debug("listNativeDirect modify key to {}", key);
    }

    Map<String, FileStatus> emptyObjects = new HashMap<String, FileStatus>();
    ListObjectsRequest request = new ListObjectsRequest();
    request.setBucketName(mBucket);
    request.setMaxKeys(5000);
    request.setPrefix(key);
    if (!flatListing) {
        request.setDelimiter("/");
    }

    ObjectListing objectList = mClient.listObjects(request);

    List<S3ObjectSummary> objectSummaries = objectList.getObjectSummaries();
    List<String> commonPrefixes = objectList.getCommonPrefixes();

    boolean objectScanContinue = true;
    S3ObjectSummary prevObj = null;
    // start FTA logic
    boolean stocatorOrigin = isSparkOrigin(key, path.toString());
    if (stocatorOrigin) {
        LOG.debug("Stocator origin is true for {}", key);
        if (!isJobSuccessful(key)) {
            LOG.debug("{} created by failed Spark job. Skipped", key);
            if (fModeAutomaticDelete) {
                delete(hostName, new Path(key), true);
            }
            return new FileStatus[0];
        }
    }
    while (objectScanContinue) {
        for (S3ObjectSummary obj : objectSummaries) {
            if (prevObj == null) {
                prevObj = obj;
                continue;
            }
            String objKey = obj.getKey();
            String unifiedObjectName = extractUnifiedObjectName(objKey);
            LOG.debug("list candidate {}, unified name {}", objKey, unifiedObjectName);
            if (stocatorOrigin && !fullListing) {
                LOG.trace("{} created by Spark", unifiedObjectName);
                // if we here - data created by spark and job completed
                // successfully
                // however there be might parts of failed tasks that
                // were not aborted
                // we need to make sure there are no failed attempts
                if (nameWithoutTaskID(objKey).equals(nameWithoutTaskID(prevObj.getKey()))) {
                    // found failed that was not aborted.
                    LOG.trace("Colisiion found between {} and {}", prevObj.getKey(), objKey);
                    if (prevObj.getSize() < obj.getSize()) {
                        LOG.trace("New candidate is {}. Removed {}", obj.getKey(), prevObj.getKey());
                        prevObj = obj;
                    }
                    continue;
                }
            }
            FileStatus fs = createFileStatus(prevObj, hostName, path);
            if (fs.getLen() > 0 || fullListing) {
                LOG.debug("Native direct list. Adding {} size {}", fs.getPath(), fs.getLen());
                if (filter == null) {
                    tmpResult.add(fs);
                } else if (filter != null && filter.accept(fs.getPath())) {
                    tmpResult.add(fs);
                } else {
                    LOG.trace("{} rejected by path filter during list. Filter {}", fs.getPath(), filter);
                }
            } else {
                emptyObjects.put(fs.getPath().toString(), fs);
            }
            prevObj = obj;
        }
        boolean isTruncated = objectList.isTruncated();
        if (isTruncated) {
            objectList = mClient.listNextBatchOfObjects(objectList);
            objectSummaries = objectList.getObjectSummaries();
        } else {
            objectScanContinue = false;
        }
    }

    if (prevObj != null) {
        FileStatus fs = createFileStatus(prevObj, hostName, path);
        LOG.debug("Adding the last object from the list {}", fs.getPath());
        if (fs.getLen() > 0 || fullListing) {
            LOG.debug("Native direct list. Adding {} size {}", fs.getPath(), fs.getLen());
            if (filter == null) {
                memoryCache.putFileStatus(fs.getPath().toString(), fs);
                tmpResult.add(fs);
            } else if (filter != null && filter.accept(fs.getPath())) {
                memoryCache.putFileStatus(fs.getPath().toString(), fs);
                tmpResult.add(fs);
            } else {
                LOG.trace("{} rejected by path filter during list. Filter {}", fs.getPath(), filter);
            }
        } else if (!fs.getPath().getName().equals(HADOOP_SUCCESS)) {
            emptyObjects.put(fs.getPath().toString(), fs);
        }
    }

    // get common prefixes
    for (String comPrefix : commonPrefixes) {
        LOG.debug("Common prefix is {}", comPrefix);
        if (emptyObjects.containsKey(keyToQualifiedPath(hostName, comPrefix).toString())
                || emptyObjects.isEmpty()) {
            FileStatus status = new COSFileStatus(true, false, keyToQualifiedPath(hostName, comPrefix));
            LOG.debug("Match between common prefix and empty object {}. Adding to result", comPrefix);
            if (filter == null) {
                memoryCache.putFileStatus(status.getPath().toString(), status);
                tmpResult.add(status);
            } else if (filter != null && filter.accept(status.getPath())) {
                memoryCache.putFileStatus(status.getPath().toString(), status);
                tmpResult.add(status);
            } else {
                LOG.trace("Common prefix {} rejected by path filter during list. Filter {}", status.getPath(),
                        filter);
            }
        }
    }
    return tmpResult.toArray(new FileStatus[tmpResult.size()]);
}

From source file:com.ibm.stocator.fs.cos.COSUtils.java

License:Apache License

/**
 * Create a files status instance from a listing.
 * @param keyPath path to entry/*from   w  w  w .j  av a2s  .c  o m*/
 * @param summary summary from AWS
 * @param blockSize block size to declare
 * @return a status entry
 */
public static COSFileStatus createFileStatus(Path keyPath, S3ObjectSummary summary, long blockSize) {
    long size = summary.getSize();
    return createFileStatus(keyPath, objectRepresentsDirectory(summary.getKey(), size), size,
            summary.getLastModified(), blockSize);
}

From source file:com.ibm.stocator.fs.cos.COSUtils.java

License:Apache License

public static String stringify(S3ObjectSummary summary) {
    StringBuilder builder = new StringBuilder(summary.getKey().length() + 100);
    builder.append(summary.getKey()).append(' ');
    builder.append("size=").append(summary.getSize());
    return builder.toString();
}

From source file:com.ikanow.infinit.e.harvest.extraction.document.file.AwsInfiniteFile.java

License:Open Source License

@Override
public InfiniteFile[] listFiles(Date optionalFilterDate, int maxDocs) {
    InfiniteFile[] fileList = null;//from  w  ww  . ja v  a  2 s  . co m
    ObjectListing list = null;
    _overwriteTime = 0L;
    ListObjectsRequest listRequest = new ListObjectsRequest().withBucketName(_awsBucketName);
    if (null != _awsObjectName) {
        listRequest.withPrefix(_awsObjectName);
    }
    listRequest.withDelimiter("/");
    list = ((AmazonS3Client) _awsClient).listObjects(listRequest);
    fileList = new InfiniteFile[list.getObjectSummaries().size() + list.getCommonPrefixes().size()];
    //TESTED (3.2)
    int nAdded = 0;
    // Get the sub-directories
    for (String subDir : list.getCommonPrefixes()) {
        // Create directories:
        fileList[nAdded] = new AwsInfiniteFile(_awsBucketName, subDir, null, _awsClient);
        nAdded++;
    } //TESTED (3b.3)
      // Get the files:
    for (S3ObjectSummary s3Obj : list.getObjectSummaries()) {
        if (!s3Obj.getKey().endsWith("/")) {
            fileList[nAdded] = new AwsInfiniteFile(s3Obj.getBucketName(), s3Obj.getKey(),
                    s3Obj.getLastModified(), _awsClient);
            long fileTime = fileList[nAdded].getDate();
            if (fileTime > _overwriteTime) {
                _overwriteTime = fileTime;
            } //TESTED (3.2)
            nAdded++;
        }
    }
    return fileList;
}

From source file:com.images3.data.impl.ImageContentAccessImplS3.java

License:Apache License

private void deleteAllImageContent(AmazonS3 client, AmazonS3Bucket bucket, ObjectListing objList) {
    boolean isFinished = false;
    while (!isFinished) {
        DeleteObjectsRequest request = new DeleteObjectsRequest(bucket.getName());
        List<KeyVersion> keys = new ArrayList<KeyVersion>(objList.getMaxKeys());
        for (S3ObjectSummary sum : objList.getObjectSummaries()) {
            keys.add(new KeyVersion(sum.getKey()));
        }//from  ww w.j  a va2 s  .  c om
        request.setKeys(keys);
        client.deleteObjects(request);
        if (objList.isTruncated()) {
            objList = client.listNextBatchOfObjects(objList);
        } else {
            isFinished = true;
        }
    }
}

From source file:com.intuit.s3encrypt.S3Encrypt.java

License:Open Source License

public static void main(String[] args) throws IOException, NoSuchAlgorithmException, InvalidKeySpecException {

    // create Options object
    Options options = new Options();
    options.addOption(create_bucket);/*from   w  ww . j ava  2 s .  c o m*/
    options.addOption(create_key);
    options.addOption(delete_bucket);
    options.addOption(get);
    options.addOption(help);
    options.addOption(inspect);
    options.addOption(keyfile);
    options.addOption(list_buckets);
    options.addOption(list_objects);
    options.addOption(put);
    options.addOption(remove);
    options.addOption(rotate);
    options.addOption(rotateall);
    options.addOption(rotateKey);

    //      CommandLineParser parser = new GnuParser();
    //       Changed from above GnuParser to below PosixParser because I found code which allows for multiple arguments 
    PosixParser parser = new PosixParser();
    CommandLine cmd;
    try {
        cmd = parser.parse(options, args);
        Logger.getRootLogger().setLevel(Level.OFF);

        if (cmd.hasOption("help")) {
            HelpFormatter help = new HelpFormatter();
            System.out.println();
            help.printHelp("S3Encrypt", options);
            System.out.println();
            System.exit(1);
        } else if (cmd.hasOption("create_key")) {
            keyname = cmd.getOptionValue("keyfile");
            createKeyFile(keyname);
            key = new File(keyname);
        } else {
            if (cmd.hasOption("keyfile")) {
                keyname = cmd.getOptionValue("keyfile");
            }
            key = new File(keyname);
        }

        if (!(key.exists())) {
            System.out.println("Key does not exist or not provided");
            System.exit(1);
        }

        //         AmazonS3 s3 = new AmazonS3Client(new ClasspathPropertiesFileCredentialsProvider());
        ClasspathPropertiesFileCredentialsProvider credentials = new ClasspathPropertiesFileCredentialsProvider(
                ".s3encrypt");
        EncryptionMaterials encryptionMaterials = new EncryptionMaterials(getKeyFile(keyname));
        AmazonS3EncryptionClient s3 = new AmazonS3EncryptionClient(credentials.getCredentials(),
                encryptionMaterials);
        //          Region usWest2 = Region.getRegion(Regions.US_WEST_2);
        //          s3.setRegion(usWest2);

        if (cmd.hasOption("create_bucket")) {
            String bucket = cmd.getOptionValue("create_bucket");
            System.out.println("Creating bucket " + bucket + "\n");
            s3.createBucket(bucket);
        } else if (cmd.hasOption("delete_bucket")) {
            String bucket = cmd.getOptionValue("delete_bucket");
            System.out.println("Deleting bucket " + bucket + "\n");
            s3.deleteBucket(bucket);
        } else if (cmd.hasOption("get")) {
            String[] searchArgs = cmd.getOptionValues("get");
            String bucket = searchArgs[0];
            String filename = searchArgs[1];
            getS3Object(cmd, s3, bucket, filename);
        } else if (cmd.hasOption("inspect")) {
            String[] searchArgs = cmd.getOptionValues("inspect");
            String bucket = searchArgs[0];
            String filename = searchArgs[1];
            String keyname = "encryption_key";
            String metadata = inspectS3Object(cmd, s3, bucket, filename, keyname);
            System.out.println(metadata);
        } else if (cmd.hasOption("list_buckets")) {
            System.out.println("Listing buckets");
            for (Bucket bucket : s3.listBuckets()) {
                System.out.println(bucket.getName());
            }
            System.out.println();
        } else if (cmd.hasOption("list_objects")) {
            String bucket = cmd.getOptionValue("list_objects");
            System.out.println("Listing objects");
            ObjectListing objectListing = s3.listObjects(new ListObjectsRequest().withBucketName(bucket));
            for (S3ObjectSummary objectSummary : objectListing.getObjectSummaries()) {
                System.out.println(objectSummary.getKey() + "  " + "(size = " + objectSummary.getSize() + ")");
            }
            System.out.println();
        } else if (cmd.hasOption("put")) {
            String[] searchArgs = cmd.getOptionValues("put");
            String bucket = searchArgs[0];
            String filename = searchArgs[1];
            String metadataKeyname = "encryption_key";
            String key = keyname;
            putS3Object(cmd, s3, bucket, filename, metadataKeyname, key);
        } else if (cmd.hasOption("remove")) {
            String[] searchArgs = cmd.getOptionValues("remove");
            String bucket = searchArgs[0];
            String filename = searchArgs[1];
            System.out.println("Removing object in S3 from BUCKET = " + bucket + " FILENAME = " + filename);
            s3.deleteObject(new DeleteObjectRequest(bucket, filename));
            System.out.println();
        } else if (cmd.hasOption("rotate")) {
            String[] searchArgs = cmd.getOptionValues("rotate");
            String bucket = searchArgs[0];
            String filename = searchArgs[1];
            String key1 = cmd.getOptionValue("keyfile");
            String key2 = cmd.getOptionValue("rotateKey");
            String metadataKeyname = "encryption_key";
            System.out.println("Supposed to get object from here OPTION VALUE = " + bucket + " FILENAME = "
                    + filename + " KEY1 = " + key1 + " KEY2 = " + key2);

            EncryptionMaterials rotateEncryptionMaterials = new EncryptionMaterials(getKeyFile(key2));
            AmazonS3EncryptionClient rotateS3 = new AmazonS3EncryptionClient(credentials.getCredentials(),
                    rotateEncryptionMaterials);

            getS3Object(cmd, s3, bucket, filename);
            putS3Object(cmd, rotateS3, bucket, filename, metadataKeyname, key2);
        } else if (cmd.hasOption("rotateall")) {
            String[] searchArgs = cmd.getOptionValues("rotateall");
            String bucket = searchArgs[0];
            String key1 = searchArgs[1];
            String key2 = searchArgs[2];
            System.out.println("Supposed to rotateall here for BUCKET NAME = " + bucket + " KEY1 = " + key1
                    + " KEY2 = " + key2);
        } else {
            System.out.println("Something went wrong... ");
            System.exit(1);
        }

    } catch (ParseException e) {
        e.printStackTrace();
    } catch (AmazonServiceException ase) {
        System.out.println("Caught an AmazonServiceException, which " + "means your request made it "
                + "to Amazon S3, but was rejected with an error response" + " for some reason.");
        System.out.println("Error Message:    " + ase.getMessage());
        System.out.println("HTTP Status Code: " + ase.getStatusCode());
        System.out.println("AWS Error Code:   " + ase.getErrorCode());
        System.out.println("Error Type:       " + ase.getErrorType());
        System.out.println("Request ID:       " + ase.getRequestId());
    } catch (AmazonClientException ace) {
        System.out.println("Caught an AmazonClientException, which " + "means the client encountered "
                + "an internal error while trying to " + "communicate with S3, "
                + "such as not being able to access the network.");
        System.out.println("Error Message: " + ace.getMessage());
    }

}

From source file:com.ipcglobal.fredimportaws.TsvsToRedshift.java

License:Apache License

/**
 * Empty bucket contents./*from  w w  w  .ja  v a  2 s  . c om*/
 *
 * @throws Exception the exception
 */
private void emptyBucketContents() throws Exception {
    try {

        while (true) {
            ObjectListing objectListing = s3Client.listObjects(new ListObjectsRequest()
                    .withBucketName(awsBucketName).withPrefix(awsBucketTsvPrefix + "/").withDelimiter("/"));
            if (objectListing.getObjectSummaries().size() == 0)
                break;
            List<KeyVersion> keyVersions = new ArrayList<KeyVersion>();
            for (S3ObjectSummary s3ObjectSummary : objectListing.getObjectSummaries())
                keyVersions.add(new KeyVersion(s3ObjectSummary.getKey()));

            if (keyVersions.size() > 0) {
                DeleteObjectsRequest deleteObjectsRequest = new DeleteObjectsRequest(awsBucketName);
                deleteObjectsRequest.setKeys(keyVersions);
                s3Client.deleteObjects(deleteObjectsRequest);
            }
        }

    } catch (AmazonServiceException ase) {
        log.error(ase);
        throw ase;
    } catch (AmazonClientException ace) {
        log.error(ace);
        throw ace;
    }
}

From source file:com.jeet.s3.AmazonS3ClientWrapper.java

License:Open Source License

public List<String> getListOfFiles(String basepath) {
    try {//from  w w  w .  j  av a  2s . c  o  m
        List<String> keys = new ArrayList();
        ListObjectsRequest listObjectsRequest = new ListObjectsRequest();
        listObjectsRequest.setBucketName(Constants.BUCKET_NAME);
        //            listObjectsRequest.setDelimiter(basepath);
        listObjectsRequest.setPrefix(basepath);
        ObjectListing objectListing;
        do {
            objectListing = s3Client.listObjects(listObjectsRequest);
            for (S3ObjectSummary objectSummary : objectListing.getObjectSummaries()) {
                //                    System.out.println(" - " + objectSummary.getKey() + "  " + "(size = " + objectSummary.getSize() + ")");
                keys.add(objectSummary.getKey());
            }
            listObjectsRequest.setMarker(objectListing.getNextMarker());
        } while (objectListing.isTruncated());
        return keys;
    } catch (Exception e) {
        e.printStackTrace();
    }
    return new ArrayList<>();
}