Examples with NOFOLLOW_LINKS java.nio.file.LinkOption.NOFOLLOW_LINKS used on opensource projects

Example 1 with NOFOLLOW_LINKS

use of java.nio.file.LinkOption.NOFOLLOW_LINKS in project aws-java-nio-spi-for-s3 by awslabs.

the class S3FileSystemProvider method checkAccess.

/**
 * Composable and testable version of {@code checkAccess} that uses the provided client to check access
 */
protected void checkAccess(S3AsyncClient s3Client, Path path, AccessMode... modes) throws IOException, ExecutionException, InterruptedException {
    if (Arrays.asList(modes).contains(AccessMode.WRITE)) {
        throw new UnsupportedOperationException("WRITE is not currently supported. Please raise a feature request if you want this.");
    }
    assert path instanceof S3Path;
    S3Path s3Path = (S3Path) path.toRealPath(NOFOLLOW_LINKS);
    final String bucketName = s3Path.getFileSystem().bucketName();
    if (s3Client == null) {
        s3Client = S3ClientStore.getInstance().getAsyncClientForBucketName(bucketName);
    }
    final CompletableFuture<? extends S3Response> response;
    if (s3Path.equals(s3Path.getRoot())) {
        response = s3Client.headBucket(request -> request.bucket(bucketName));
    } else {
        response = s3Client.headObject(req -> req.bucket(bucketName).key(s3Path.getKey()));
    }
    long timeOut = TimeOutUtils.TIMEOUT_TIME_LENGTH_1;
    TimeUnit unit = MINUTES;
    try {
        SdkHttpResponse httpResponse = response.get(timeOut, unit).sdkHttpResponse();
        if (httpResponse.isSuccessful())
            return;
        if (httpResponse.statusCode() == FORBIDDEN)
            throw new AccessDeniedException(s3Path.toString());
        if (httpResponse.statusCode() == NOT_FOUND)
            throw new NoSuchFileException(s3Path.toString());
        throw new IOException(String.format("exception occurred while checking access, response code was '%d'", httpResponse.statusCode()));
    } catch (TimeoutException e) {
        throw logAndGenerateExceptionOnTimeOut(logger, "checkAccess", timeOut, unit);
    }
}

Example 2 with NOFOLLOW_LINKS

use of java.nio.file.LinkOption.NOFOLLOW_LINKS in project aws-java-nio-spi-for-s3 by awslabs.

the class S3FileSystemProvider method newDirectoryStream.

/**
 * Get a new directory stream that will use the specified client. A composable and testable version of the public
 * version of {@code newDirectoryStream}
 */
protected DirectoryStream<Path> newDirectoryStream(S3AsyncClient s3Client, Path dir, DirectoryStream.Filter<? super Path> filter) throws ExecutionException, InterruptedException {
    S3Path s3Path = (S3Path) dir;
    if (s3Client == null) {
        s3Client = S3ClientStore.getInstance().getAsyncClientForBucketName(s3Path.bucketName());
    }
    String pathString = s3Path.toRealPath(NOFOLLOW_LINKS).toString();
    if (!pathString.endsWith(S3Path.PATH_SEPARATOR) && !pathString.isEmpty()) {
        pathString = pathString + S3Path.PATH_SEPARATOR;
    }
    final String bucketName = s3Path.bucketName();
    final S3FileSystem fs = new S3FileSystem(bucketName);
    final String prefix = pathString;
    long timeOut = TIMEOUT_TIME_LENGTH_1;
    final TimeUnit unit = MINUTES;
    try {
        final Iterator<S3Path> filteredDirectoryContents = s3Client.listObjectsV2(req -> req.bucket(bucketName).prefix(prefix)).get(timeOut, unit).contents().stream().map(s3Object -> truncateByPrefix(fs, prefix, s3Object)).filter(path -> {
            try {
                return filter.accept(path);
            } catch (IOException e) {
                e.printStackTrace();
                return false;
            }
        }).iterator();
        return new DirectoryStream<Path>() {

            final Iterator<? extends Path> iterator = filteredDirectoryContents;

            @Override
            @SuppressWarnings("unchecked")
            public Iterator<Path> iterator() {
                return (Iterator<Path>) iterator;
            }

            @Override
            public void close() {
            // nothing to close
            }
        };
    } catch (TimeoutException e) {
        throw logAndGenerateExceptionOnTimeOut(logger, "newDirectoryStream", timeOut, unit);
    }
}