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.jclouds.io.ByteStreams2.java

public static HashCode hashAndClose(InputStream input, HashFunction hashFunction) throws IOException {
    checkNotNull(input, "input");
    checkNotNull(hashFunction, "hashFunction");
    try {//from w  w  w.  j ava2s .  c om
        HashingInputStream his = new HashingInputStream(hashFunction, input);
        ByteStreams.copy(his, ByteStreams.nullOutputStream());
        return his.hash();
    } finally {
        closeQuietly(input);
    }
}

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From source file:org.sonatype.nexus.common.hash.Hashes.java

/**
 * Computes the hash of the given stream using the given algorithm.
 *//* w  w w  . j a v  a 2  s.  c  o m*/
public static HashCode hash(final HashAlgorithm algorithm, final InputStream inputStream) throws IOException {
    checkNotNull(algorithm);
    checkNotNull(inputStream);

    try (HashingInputStream hashingStream = new HashingInputStream(algorithm.function(), inputStream)) {
        ByteStreams.copy(hashingStream, ByteStreams.nullOutputStream());
        return hashingStream.hash();
    }
}

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From source file:com.lithium.flow.util.HashEncoder.java

@Nonnull
public String process(@Nonnull InputStream in) throws IOException {
    checkNotNull(in);/*from   www  .j av  a  2 s  . co m*/
    try {
        HashingInputStream hashIn = new HashingInputStream(function, in);
        IOUtils.copy(hashIn, ByteStreams.nullOutputStream());
        return encoding.encode(hashIn.hash().asBytes());
    } finally {
        IOUtils.closeQuietly(in);
    }
}

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From source file:net.minecrell.workbench.tools.DownloadTools.java

public static void download(URLConnection con, Path output, boolean verifyEtag) throws IOException {
    if (verifyEtag) {

        HashCode hash;//from   www .ja  v  a 2  s .  co m
        try (HashingInputStream in = new HashingInputStream(ETAG_HASH, con.getInputStream())) {
            download(in, output);
            hash = in.hash();
        }

        String expected = getEtag(con);
        if (!expected.isEmpty()) {
            String result = hash.toString();
            if (!result.equals(expected)) {
                Files.delete(output);
                throw new IOException("Checksum mismatch for " + output.getFileName().toString() + ": expected "
                        + expected + " got " + result);
            }
        }
    } else {
        download(con.getInputStream(), output);
    }
}

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From source file:com.facebook.buck.io.HashingDeterministicJarWriter.java

public HashingDeterministicJarWriter writeEntry(String name, InputStream contents) throws IOException {
    try (HashingInputStream hashingContents = new HashingInputStream(Hashing.murmur3_128(), contents)) {
        writeToJar(name, hashingContents);
        manifestWriter.setEntryAttribute(name, DIGEST_ATTRIBUTE_NAME, hashingContents.hash().toString());
    }//w  w  w .j  av  a 2  s . com
    return this;
}

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From source file:org.jclouds.glacier.util.TreeHash.java

/**
 * Builds the Hash and the TreeHash values of the payload.
 *
 * @return The calculated TreeHash.//from ww  w  .j  a v  a 2  s  . com
 * @see <a href="http://docs.aws.amazon.com/amazonglacier/latest/dev/checksum-calculations.html" />
 */
public static TreeHash buildTreeHashFromPayload(Payload payload) throws IOException {
    InputStream is = null;
    try {
        is = checkNotNull(payload, "payload").openStream();
        Builder<HashCode> list = ImmutableList.builder();
        HashingInputStream linearHis = new HashingInputStream(Hashing.sha256(), is);
        while (true) {
            HashingInputStream chunkedHis = new HashingInputStream(Hashing.sha256(),
                    ByteStreams.limit(linearHis, CHUNK_SIZE));
            long count = ByteStreams.copy(chunkedHis, ByteStreams.nullOutputStream());
            if (count == 0) {
                break;
            }
            list.add(chunkedHis.hash());
        }
        //The result list contains exactly one element now.
        return new TreeHash(hashList(list.build()), linearHis.hash());
    } finally {
        closeQuietly(is);
    }
}

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From source file:org.openscoring.service.ModelRegistry.java

@SuppressWarnings(value = { "resource" })
public Model load(InputStream is) throws Exception {
    CountingInputStream countingIs = new CountingInputStream(is);

    HashingInputStream hashingIs = new HashingInputStream(Hashing.md5(), countingIs);

    ModelEvaluator<?> evaluator = unmarshal(hashingIs, this.validate);

    PMML pmml = evaluator.getPMML();//from  w  w  w  .ja v  a  2  s.co  m

    for (Class<? extends Visitor> visitorClazz : this.visitorClazzes) {
        Visitor visitor = visitorClazz.newInstance();

        visitor.applyTo(pmml);
    }

    evaluator.verify();

    Model model = new Model(evaluator);
    model.putProperty(Model.PROPERTY_FILE_SIZE, countingIs.getCount());
    model.putProperty(Model.PROPERTY_FILE_MD5SUM, (hashingIs.hash()).toString());

    return model;
}

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From source file:com.facebook.buck.jvm.java.JarDumper.java

private Stream<String> dumpBinaryFile(String name, InputStream inputStream) throws IOException {
    try (HashingInputStream is = new HashingInputStream(Hashing.murmur3_128(), inputStream)) {
        ByteStreams.exhaust(is);//from ww  w . jav  a2  s  .  c  o  m
        return Stream.of(String.format("Murmur3-128 of %s: %s", name, is.hash().toString()));
    }
}

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From source file:org.jclouds.jdbc.service.JdbcService.java

@Transactional(rollbackOn = IOException.class)
public BlobEntity createOrModifyBlob(String containerName, Blob blob, BlobAccess blobAccess)
        throws IOException {
    List<Long> chunks;
    HashingInputStream his = new HashingInputStream(Hashing.md5(), blob.getPayload().openStream());
    try {//from  w ww .  ja va  2s.  c o  m
        chunks = storeData(his);
    } finally {
        Closeables2.closeQuietly(his);
    }
    HashCode actualHashCode = his.hash();
    HashCode expectedHashCode = blob.getPayload().getContentMetadata().getContentMD5AsHashCode();
    if (expectedHashCode != null && !actualHashCode.equals(expectedHashCode)) {
        throw new IOException(
                "MD5 hash code mismatch, actual: " + actualHashCode + " expected: " + expectedHashCode);
    }

    String key = blob.getMetadata().getName();
    Date creationDate = null;
    BlobEntity oldBlobEntity = findBlobById(containerName, key);
    if (oldBlobEntity != null) {
        creationDate = oldBlobEntity.getCreationDate();
    }
    BlobEntity blobEntity = blobToBlobEntity.apply(blob);
    blobEntity.getPayload().setChunks(chunks);
    blobEntity.setContainerEntity(containerRepository.findContainerByName(containerName));
    blobEntity.setKey(key);
    blobEntity.setBlobAccess(blobAccess);
    blobEntity.setTier(blob.getMetadata().getTier());
    blobEntity.setCreationDate(creationDate);
    blobEntity.setLastModified(new Date());
    blobEntity.setEtag(base16().lowerCase().encode(actualHashCode.asBytes()));
    blobEntity.getPayload().setContentMD5(actualHashCode.asBytes());

    BlobEntity result = blobRepository.save(blobEntity);
    return result;
}

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From source file:org.jclouds.glacier.util.AWSRequestSignerV4.java

private static HashCode buildHashedPayload(HttpRequest request) {
    HashingInputStream his = null;/*from ww w  . j av  a 2s .c  o m*/
    try {
        his = new HashingInputStream(Hashing.sha256(),
                request.getPayload() == null ? ByteSource.empty().openStream()
                        : request.getPayload().openStream());
        ByteStreams.copy(his, ByteStreams.nullOutputStream());
        return his.hash();
    } catch (IOException e) {
        throw new HttpException("Error signing request", e);
    } finally {
        closeQuietly(his);
    }
}

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