Example usage for com.google.common.hash HashingInputStream HashingInputStream

Introduction

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

Prototype

public HashingInputStream(HashFunction hashFunction, InputStream in) 

Source Link

Document

Creates an input stream that hashes using the given HashFunction and delegates all data read from it to the underlying InputStream .

Usage

From source file:org.apache.james.blob.objectstorage.ObjectStorageBlobsDAO.java

private CompletableFuture<BlobId> save(InputStream data, BlobId id) {
    String containerName = this.containerName.value();
    HashingInputStream hashingInputStream = new HashingInputStream(Hashing.sha256(), data);
    Payload payload = payloadCodec.write(hashingInputStream);
    Blob blob = blobStore.blobBuilder(id.asString()).payload(payload).build();

    return CompletableFuture.supplyAsync(() -> blobStore.putBlob(containerName, blob), executor)
            .thenApply(any -> blobIdFactory.from(hashingInputStream.hash().toString()));
}

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From source file:com.ibm.common.activitystreams.legacy.Binary.java

/**
 * Return an InputStream for reading the data
 * @param compression Compression/*from   w  w w .j  av  a 2  s  .  co  m*/
 * @return InputStream
 * @throws IOException
 */
public InputStream read(Compression<?, ?> compression) throws IOException {
    StringReader reader = new StringReader(data());
    InputStream in = BaseEncoding.base64Url().decodingStream(reader);
    if (compression != null)
        in = compression.decompressor(in);
    if (has("md5"))
        in = new HashingInputStream(Hashing.md5(), in);
    return in;
}

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From source file:org.jclouds.s3.filters.Aws4SignerBase.java

/**
 * hash input with sha256//from   w  w w. jav  a2  s. c om
 *
 * @param input
 * @return hash result
 * @throws HTTPException
 */
public static byte[] hash(InputStream input) throws HTTPException {
    HashingInputStream his = new HashingInputStream(Hashing.sha256(), input);
    try {
        ByteStreams.copy(his, ByteStreams.nullOutputStream());
        return his.hash().asBytes();
    } catch (IOException e) {
        throw new HttpException("Unable to compute hash while signing request: " + e.getMessage(), e);
    }
}

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From source file:org.haiku.haikudepotserver.pkg.job.PkgScreenshotImportArchiveJobRunner.java

/**
 * <p>Goes through the archive and captures information about each screenshot.</p>
 *///from   w  w  w . ja  v  a  2s  . c  o m

private void collectScreenshotMetadataFromArchive(Map<String, ScreenshotImportMetadatas> data,
        ArchiveInputStream archiveInputStream, ArchiveEntry archiveEntry, String pkgName, int order) {

    ScreenshotImportMetadatas metadatas = data.get(pkgName);

    if (null == metadatas) {
        metadatas = new ScreenshotImportMetadatas();
        ObjectContext context = serverRuntime.newContext();
        Optional<Pkg> pkgOptional = Pkg.tryGetByName(context, pkgName);

        if (!pkgOptional.isPresent()) {
            metadatas.setNotFound();
        }

        data.put(pkgName, metadatas);
    }

    if (!metadatas.isNotFound()) {
        HashingInputStream hashingInputStream = new HashingInputStream(HASH_FUNCTION, archiveInputStream);

        try {
            ByteStreams.copy(hashingInputStream, ByteStreams.nullOutputStream());
        } catch (IOException ioe) {
            throw new UncheckedIOException(ioe);
        }

        metadatas.add(new FromArchiveScreenshotMetadata(order, archiveEntry.getSize(),
                hashingInputStream.hash(), archiveEntry.getName()));
    }
}

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From source file:org.jclouds.kinetic.strategy.internal.KineticStorageStrategyImpl.java

@Override
public String putBlob(final String containerName, final Blob blob) throws IOException {
    String blobKey = blob.getMetadata().getName();
    Payload payload = blob.getPayload();

    InputStream payloadStream = payload.openStream();

    HashingInputStream his = new HashingInputStream(Hashing.md5(), payloadStream);
    // Reset input stream back to beginning
    payloadStream.reset();/*from   w w  w  .ja v  a 2 s. com*/

    kineticContainerNameValidator.validate(containerName);
    kineticBlobKeyValidator.validate(blobKey);
    if (getDirectoryBlobSuffix(blobKey) != null) {
        return putDirectoryBlob(containerName, blob);
    }

    long fileLength = payload.getContentMetadata().getContentLength();
    long chunksRequired = numberOfChunksForSize(fileLength);
    int chunkDataLength = KineticConstants.PROPERTY_CHUNK_SIZE_BYTES
            - KineticConstants.PROPERTY_CHUNK_FULL_HEADER_SIZE_BYTES;
    int currentChunk = 0;
    long fileId = -1;
    try {
        fileId = KineticDatabaseUtils.getInstance().getFileIdFromDatabase(containerName + "/" + blobKey);
    } catch (SQLException sqle) {
        sqle.printStackTrace();
    }
    while (currentChunk < chunksRequired) {
        Chunk chunk = new Chunk(this, fileId, currentChunk);
        byte[] chunkData = new byte[KineticConstants.PROPERTY_CHUNK_SIZE_BYTES];

        // Get header type values
        Map<String, String> headers = getChunkHeaders(containerName, blobKey, currentChunk);
        String chunkKey = getChunkKey(containerName, blobKey, currentChunk);

        // Set header values into the actual data of the chunk
        byte[] headerBytes = chunkKey.getBytes("UTF-8");
        for (int i = 0; i < headerBytes.length; i++) {
            chunkData[i] = headerBytes[i];
        }

        // Read data from blob into chunk
        payload.openStream().read(chunkData, headerBytes.length, chunkDataLength);
        chunk.setData(chunkData);

        // Send data to KDCC
        try {
            KineticDatabaseUtils.getInstance().addChunkToDatabase(chunkKey, chunkData);
        } catch (SQLException sqle) {
            return null;
        }

    }
    try {
        KineticDatabaseUtils.getInstance().addFileToDatabase(containerName + "/" + blobKey, fileLength);
    } catch (SQLException e) {
        e.printStackTrace();
    }

    if (payload != null) {
        payload.release();
    }
    return base16().lowerCase().encode(his.hash().asBytes());
}

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