Example usage for com.google.common.hash HashingOutputStream close

Introduction

In this page you can find the example usage for com.google.common.hash HashingOutputStream close.

Prototype

@Override
    public void close() throws IOException 

Source Link

Usage

From source file:uk.ac.horizon.artcodes.server.christmas.ImageServlet.java

@Override
public void doPut(HttpServletRequest request, HttpServletResponse response) throws IOException {
    try {/* ww w  . j av  a2  s . c  o  m*/
        if (request.getContentLength() > image_size) {
            throw new HTTPException(HttpServletResponse.SC_REQUEST_ENTITY_TOO_LARGE, "Image too large");
        }

        verifyApp(request);
        final String id = getImageID(request);
        final GcsService gcsService = GcsServiceFactory.createGcsService(RetryParams.getDefaultInstance());
        final GcsFilename filename = new GcsFilename(request.getServerName(), id);

        final GcsFileMetadata metadata = gcsService.getMetadata(filename);
        if (metadata != null) {
            throw new HTTPException(HttpServletResponse.SC_FORBIDDEN, "Cannot modify");
        }

        final BufferedInputStream inputStream = new BufferedInputStream(request.getInputStream());
        final String mimetype = URLConnection.guessContentTypeFromStream(inputStream);
        if (mimetype == null) {
            throw new HTTPException(HttpServletResponse.SC_BAD_REQUEST, "Unrecognised image type");
        }

        final GcsFileOptions.Builder fileOptionsBuilder = new GcsFileOptions.Builder();
        fileOptionsBuilder.mimeType(mimetype);
        final GcsFileOptions fileOptions = fileOptionsBuilder.build();
        final GcsOutputChannel outputChannel = gcsService.createOrReplace(filename, fileOptions);

        final HashingOutputStream outputStream = new HashingOutputStream(Hashing.sha256(),
                Channels.newOutputStream(outputChannel));
        ByteStreams.copy(inputStream, outputStream);

        String hash = outputStream.hash().toString();
        if (!hash.equals(id)) {
            gcsService.delete(filename);
            throw new HTTPException(HttpServletResponse.SC_BAD_REQUEST, "Invalid hash");
        }

        outputStream.close();
        outputChannel.close();
    } catch (HTTPException e) {
        e.writeTo(response);
    }
}

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From source file:uk.ac.horizon.artcodes.server.ImageServlet.java

@Override
public void doPut(HttpServletRequest request, HttpServletResponse response) throws IOException {
    try {// www  .j a v a2  s  .  c o m
        if (request.getContentLength() > image_size) {
            throw new HTTPException(HttpServletResponse.SC_REQUEST_ENTITY_TOO_LARGE, "Image too large");
        }

        verifyUser(getUser(request));
        final String id = getImageID(request);
        final GcsService gcsService = GcsServiceFactory.createGcsService(RetryParams.getDefaultInstance());
        final GcsFilename filename = new GcsFilename(request.getServerName(), id);

        final GcsFileMetadata metadata = gcsService.getMetadata(filename);
        if (metadata != null) {
            throw new HTTPException(HttpServletResponse.SC_FORBIDDEN, "Cannot modify");
        }

        final BufferedInputStream inputStream = new BufferedInputStream(request.getInputStream());
        final String mimetype = URLConnection.guessContentTypeFromStream(inputStream);
        if (mimetype == null) {
            throw new HTTPException(HttpServletResponse.SC_BAD_REQUEST, "Unrecognised image type");
        }

        final GcsFileOptions.Builder fileOptionsBuilder = new GcsFileOptions.Builder();
        fileOptionsBuilder.mimeType(mimetype);
        final GcsFileOptions fileOptions = fileOptionsBuilder.build();
        final GcsOutputChannel outputChannel = gcsService.createOrReplace(filename, fileOptions);

        final HashingOutputStream outputStream = new HashingOutputStream(Hashing.sha256(),
                Channels.newOutputStream(outputChannel));
        ByteStreams.copy(inputStream, outputStream);

        String hash = outputStream.hash().toString();
        if (!hash.equals(id)) {
            gcsService.delete(filename);
            throw new HTTPException(HttpServletResponse.SC_BAD_REQUEST, "Invalid hash");
        }

        outputStream.close();
        outputChannel.close();
    } catch (HTTPException e) {
        e.writeTo(response);
    }
}

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