Examples of com.amazonaws.services.s3.model.ObjectListing

com.amazonaws.services.s3.model.ObjectListing
Contains the results of listing the objects in an Amazon S3 bucket. This includes a list of {@link S3ObjectSummary} objects describing the objects stored inthe bucket, a list of common prefixes if a delimiter was specified in the request, information describing if this is a complete or partial listing, and the original request parameters. @see AmazonS3#listObjects(String,String) @see AmazonS3#listObjects(ListObjectsRequest) @see AmazonS3#listNextBatchOfObjects(ObjectListing)

            throws AmazonClientException, AmazonServiceException {
        assertParameterNotNull(previousObjectListing,
                "The previous object listing parameter must be specified when listing the next batch of objects in a bucket");


        if (!previousObjectListing.isTruncated()) {
            ObjectListing emptyListing = new ObjectListing();
            emptyListing.setBucketName(previousObjectListing.getBucketName());
            emptyListing.setDelimiter(previousObjectListing.getDelimiter());
            emptyListing.setMarker(previousObjectListing.getNextMarker());
            emptyListing.setMaxKeys(previousObjectListing.getMaxKeys());
            emptyListing.setPrefix(previousObjectListing.getPrefix());
            emptyListing.setTruncated(false);


            return emptyListing;
        }


        return listObjects(new ListObjectsRequest(

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        // Recurse all virtual subdirectories to get a list of object summaries.
        // This is a depth-first search.
        do {
            String prefix = commonPrefixes.pop();
            ObjectListing listObjectsResponse = null;


            do {
                if ( listObjectsResponse == null ) {
                    ListObjectsRequest listObjectsRequest = new ListObjectsRequest().withBucketName(bucketName)
                            .withDelimiter(DEFAULT_DELIMITER).withPrefix(prefix);
                    listObjectsResponse = s3.listObjects(listObjectsRequest);
                } else {
                    listObjectsResponse = s3.listNextBatchOfObjects(listObjectsResponse);
                }


                for ( S3ObjectSummary s : listObjectsResponse.getObjectSummaries() ) {
                    // Skip any files that are also virtual directories, since
                    // we can't save both a directory and a file of the same
                    // name.
                    if ( !s.getKey().equals(prefix)
                            && !listObjectsResponse.getCommonPrefixes().contains(s.getKey() + DEFAULT_DELIMITER) ) {
                        objectSummaries.add(s);
                        totalSize += s.getSize();
                    } else {
                        log.debug("Skipping download for object " + s.getKey()
                                + " since it is also a virtual directory");
                    }
                }


                commonPrefixes.addAll(listObjectsResponse.getCommonPrefixes());
            } while ( listObjectsResponse.isTruncated() );
        } while ( !commonPrefixes.isEmpty() );
        
        TransferProgressImpl transferProgress = new TransferProgressImpl();
        transferProgress.setTotalBytesToTransfer(totalSize);
        ProgressListener listener = new TransferProgressUpdatingListener(transferProgress);

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        LOG.info("delete bucket [" + bucket + "]");
        TransferManager tmx = new TransferManager(s3service);
        if (s3service.doesBucketExist(bucket)) {
            for (int i = 0; i < 3; i++) {
                tmx.abortMultipartUploads(bucket, startTime);
                ObjectListing prevObjectListing = s3service.listObjects(bucket);
                while (prevObjectListing != null ) {
                    List<DeleteObjectsRequest.KeyVersion> deleteList = new ArrayList<DeleteObjectsRequest.KeyVersion>();
                    for (S3ObjectSummary s3ObjSumm : prevObjectListing.getObjectSummaries()) {
                        deleteList.add(new DeleteObjectsRequest.KeyVersion(s3ObjSumm.getKey()));
                    }
                    if (deleteList.size() > 0) {
                        DeleteObjectsRequest delObjsReq = new DeleteObjectsRequest(bucket);
                        delObjsReq.setKeys(deleteList);
                        s3service.deleteObjects(delObjsReq);
                    }
                    if (!prevObjectListing.isTruncated()) break;
                    prevObjectListing = s3service.listNextBatchOfObjects(prevObjectListing);
                }
            }
            s3service.deleteBucket(bucket);
            LOG.info("bucket: " + bucket + " deleted");

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        throw new UnsupportedOperationException();
    }


    @Override
    public ObjectListing listObjects(ListObjectsRequest listObjectsRequest) throws AmazonClientException, AmazonServiceException {
        ObjectListing objectListing = new ObjectListing();
        int capacity = listObjectsRequest.getMaxKeys();
        
        for (int index = 0; index < objects.size() && index < capacity; index++) {
            S3ObjectSummary s3ObjectSummary = new S3ObjectSummary();
            s3ObjectSummary.setBucketName(objects.get(index).getBucketName());
            s3ObjectSummary.setKey(objects.get(index).getKey());
            
            objectListing.getObjectSummaries().add(s3ObjectSummary);
        }


        return objectListing;
    }

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     * @param bucketName the bucket name.
     */
    public static void deleteBucket(final String bucketName) throws IOException {
        Properties prop = readConfig(DEFAULT_CONFIG_FILE);
        AmazonS3 s3service = openService(prop);
        ObjectListing prevObjectListing = s3service.listObjects(bucketName);
        while (true) {
            for (S3ObjectSummary s3ObjSumm : prevObjectListing.getObjectSummaries()) {
                s3service.deleteObject(bucketName, s3ObjSumm.getKey());
            }
            if (!prevObjectListing.isTruncated()) {
                break;
            }
            prevObjectListing = s3service.listNextBatchOfObjects(prevObjectListing);
        }
        s3service.deleteBucket(bucketName);

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        ClassLoader contextClassLoader = Thread.currentThread().getContextClassLoader();
        try {
            Thread.currentThread().setContextClassLoader(
                getClass().getClassLoader());
            Set<DataIdentifier> ids = new HashSet<DataIdentifier>();
            ObjectListing prevObjectListing = s3service.listObjects(bucket);
            while (true) {
                for (S3ObjectSummary s3ObjSumm : prevObjectListing.getObjectSummaries()) {
                    String id = getIdentifierName(s3ObjSumm.getKey());
                    if (id != null) {
                        ids.add(new DataIdentifier(id));
                    }
                }
                if (!prevObjectListing.isTruncated()) break;
                prevObjectListing = s3service.listNextBatchOfObjects(prevObjectListing);
            }
            LOG.debug("getAllIdentifiers returned size [{}] took [{}] ms.",
                ids.size(), (System.currentTimeMillis() - start));
            return ids.iterator();

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        Set<DataIdentifier> deleteIdSet = new HashSet<DataIdentifier>(30);
        ClassLoader contextClassLoader = Thread.currentThread().getContextClassLoader();
        try {
            Thread.currentThread().setContextClassLoader(
                getClass().getClassLoader());
            ObjectListing prevObjectListing = s3service.listObjects(bucket);
            while (true) {
                List<DeleteObjectsRequest.KeyVersion> deleteList = new ArrayList<DeleteObjectsRequest.KeyVersion>();
                for (S3ObjectSummary s3ObjSumm : prevObjectListing.getObjectSummaries()) {
                    DataIdentifier identifier = new DataIdentifier(
                        getIdentifierName(s3ObjSumm.getKey()));
                    long lastModified = s3ObjSumm.getLastModified().getTime();
                    LOG.debug("Identifier [{}]'s lastModified = [{}]", identifier, lastModified);
                    if (!store.isInUse(identifier) && lastModified < min) {
                        LOG.debug("add id [{}] to delete lists",  s3ObjSumm.getKey());
                        deleteList.add(new DeleteObjectsRequest.KeyVersion(
                            s3ObjSumm.getKey()));
                        deleteIdSet.add(identifier);
                    }
                }
                if (deleteList.size() > 0) {
                    DeleteObjectsRequest delObjsReq = new DeleteObjectsRequest(
                        bucket);
                    delObjsReq.setKeys(deleteList);
                    DeleteObjectsResult dobjs = s3service.deleteObjects(delObjsReq);
                    if (dobjs.getDeletedObjects().size() != deleteList.size()) {
                        throw new DataStoreException(
                            "Incomplete delete object request. only  "
                                + dobjs.getDeletedObjects().size() + " out of "
                                + deleteList.size() + " are deleted");
                    } else {
                        LOG.debug("[{}] records deleted from datastore",
                            deleteList);
                    }
                }
                if (!prevObjectListing.isTruncated()) {
                    break;
                }
                prevObjectListing = s3service.listNextBatchOfObjects(prevObjectListing);
            }
        } finally {

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        ClassLoader contextClassLoader = Thread.currentThread().getContextClassLoader();
        long count = 0;
        try {
            Thread.currentThread().setContextClassLoader(
                getClass().getClassLoader());
            ObjectListing prevObjectListing = s3service.listObjects(bucket,
                KEY_PREFIX);
            List<DeleteObjectsRequest.KeyVersion> deleteList = new ArrayList<DeleteObjectsRequest.KeyVersion>();
            int nThreads = Integer.parseInt(properties.getProperty("maxConnections"));
            ExecutorService executor = Executors.newFixedThreadPool(nThreads,
                new NamedThreadFactory("s3-object-rename-worker"));
            boolean taskAdded = false;
            while (true) {
                for (S3ObjectSummary s3ObjSumm : prevObjectListing.getObjectSummaries()) {
                    executor.execute(new KeyRenameThread(s3ObjSumm.getKey()));
                    taskAdded = true;
                    count++;
                    deleteList.add(new DeleteObjectsRequest.KeyVersion(
                        s3ObjSumm.getKey()));
                }
                if (!prevObjectListing.isTruncated()) break;
                prevObjectListing = s3service.listNextBatchOfObjects(prevObjectListing);
            }
            // This will make the executor accept no new threads
            // and finish all existing threads in the queue
            executor.shutdown();

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        ClassLoader contextClassLoader = Thread.currentThread().getContextClassLoader();
        try {
            Thread.currentThread().setContextClassLoader(
                getClass().getClassLoader());
            Set<DataIdentifier> ids = new HashSet<DataIdentifier>();
            ObjectListing prevObjectListing = s3service.listObjects(bucket);
            while (true) {
                for (S3ObjectSummary s3ObjSumm : prevObjectListing.getObjectSummaries()) {
                    String id = getIdentifierName(s3ObjSumm.getKey());
                    if (id != null) {
                        ids.add(new DataIdentifier(id));
                    }
                }
                if (!prevObjectListing.isTruncated()) break;
                prevObjectListing = s3service.listNextBatchOfObjects(prevObjectListing);
            }
            LOG.debug("getAllIdentifiers returned size [{}] took [{}] ms.",
                ids.size(), (System.currentTimeMillis() - start));
            return ids.iterator();

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        Set<DataIdentifier> deleteIdSet = new HashSet<DataIdentifier>(30);
        ClassLoader contextClassLoader = Thread.currentThread().getContextClassLoader();
        try {
            Thread.currentThread().setContextClassLoader(
                getClass().getClassLoader());
            ObjectListing prevObjectListing = s3service.listObjects(bucket);
            while (true) {
                List<DeleteObjectsRequest.KeyVersion> deleteList = new ArrayList<DeleteObjectsRequest.KeyVersion>();
                for (S3ObjectSummary s3ObjSumm : prevObjectListing.getObjectSummaries()) {
                    DataIdentifier identifier = new DataIdentifier(
                        getIdentifierName(s3ObjSumm.getKey()));
                    long lastModified = s3ObjSumm.getLastModified().getTime();
                    LOG.debug("Identifier [{}]'s lastModified = [{}]", identifier, lastModified);
                    if (!store.isInUse(identifier) && lastModified < min) {
                        LOG.debug("add id [{}] to delete lists",  s3ObjSumm.getKey());
                        deleteList.add(new DeleteObjectsRequest.KeyVersion(
                            s3ObjSumm.getKey()));
                        deleteIdSet.add(identifier);
                    }
                }
                if (deleteList.size() > 0) {
                    DeleteObjectsRequest delObjsReq = new DeleteObjectsRequest(
                        bucket);
                    delObjsReq.setKeys(deleteList);
                    DeleteObjectsResult dobjs = s3service.deleteObjects(delObjsReq);
                    if (dobjs.getDeletedObjects().size() != deleteList.size()) {
                        throw new DataStoreException(
                            "Incomplete delete object request. only  "
                                + dobjs.getDeletedObjects().size() + " out of "
                                + deleteList.size() + " are deleted");
                    } else {
                        LOG.debug("[{}] records deleted from datastore",
                            deleteList);
                    }
                }
                if (!prevObjectListing.isTruncated()) {
                    break;
                }
                prevObjectListing = s3service.listNextBatchOfObjects(prevObjectListing);
            }
        } finally {

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