Example usage for com.google.common.hash Hashing md5

Introduction

In this page you can find the example usage for com.google.common.hash Hashing md5.

Prototype

public static HashFunction md5()

Source Link

Document

Returns a hash function implementing the MD5 hash algorithm (128 hash bits) by delegating to the MD5 MessageDigest .

Usage

From source file:jp.classmethod.aws.gradle.s3.AmazonS3FileUploadTask.java

private String md5() throws IOException {
    return Files.hash(getFile(), Hashing.md5()).toString();
}

From source file:com.philbeaudoin.quebec.server.session.ServerSessionManagerImpl.java

@Inject
public ServerSessionManagerImpl(ObjectifyServiceWrapper objectifyServiceWrapper, SecureRandomSingleton random,
        HttpServletRequest request, HttpServletResponse response) {
    this.objectifyServiceWrapper = objectifyServiceWrapper;
    this.random = random;
    this.request = request;
    this.response = response;
    hashFunction = Hashing.md5();
}

From source file:com.netflix.dynomitemanager.sidecore.utils.SystemUtils.java

/**
 * Get a Md5 string which is similar to OS Md5sum
 *//*from ww  w  .j a  v a2s  . c om*/
public static String md5(File file) {
    if (file == null)
        throw new IllegalArgumentException("file cannot be null");
    try {
        HashCode hc = Files.hash(file, Hashing.md5());
        return toHex(hc.asBytes());
    } catch (Exception e) {
        throw new RuntimeException(e);
    }
}

From source file:org.apache.aurora.scheduler.storage.log.LogPersistenceModule.java

@Override
protected void configure() {
    bind(new TypeLiteral<Amount<Integer, Data>>() {
    }).annotatedWith(MaxEntrySize.class).toInstance(options.maxLogEntrySize);
    bind(LogManager.class).in(Singleton.class);
    bind(LogPersistence.class).in(Singleton.class);
    bind(Persistence.class).to(LogPersistence.class);
    expose(Persistence.class);
    expose(LogPersistence.class);

    bind(EntrySerializer.class).to(EntrySerializerImpl.class);
    // TODO(ksweeney): We don't need a cryptographic checksum here - assess performance of MD5
    // versus a faster error-detection checksum like CRC32 for large Snapshots.
    @SuppressWarnings("deprecation")
    HashFunction hashFunction = Hashing.md5();
    bind(HashFunction.class).annotatedWith(LogEntryHashFunction.class).toInstance(hashFunction);

    bind(SnapshotDeduplicator.class).to(SnapshotDeduplicatorImpl.class);

    install(new FactoryModuleBuilder().implement(StreamManager.class, StreamManagerImpl.class)
            .build(StreamManagerFactory.class));
}

From source file:org.eclipse.che.everrest.ETagResponseFilter.java

/**
 * Filter the given container response/*from w w  w.  j  av a  2 s . c o m*/
 *
 * @param containerResponse
 *         the response to use
 */
public void doFilter(GenericContainerResponse containerResponse) {

    // get entity of the response
    Object entity = containerResponse.getEntity();

    // no entity, skip
    if (entity == null) {
        return;
    }

    // Only handle JSON content
    if (!MediaType.APPLICATION_JSON_TYPE.equals(containerResponse.getContentType())) {
        return;
    }

    // Get the request
    ApplicationContext applicationContext = ApplicationContext.getCurrent();
    Request request = applicationContext.getRequest();

    // manage only GET requests
    if (!HttpMethod.GET.equals(request.getMethod())) {
        return;
    }

    // calculate hash with MD5
    HashFunction hashFunction = Hashing.md5();
    Hasher hasher = hashFunction.newHasher();
    boolean hashingSuccess = true;

    // Manage a list
    if (entity instanceof List) {
        List<?> entities = (List) entity;
        for (Object simpleEntity : entities) {
            hashingSuccess = addHash(simpleEntity, hasher);
            if (!hashingSuccess) {
                break;
            }
        }
    } else {
        hashingSuccess = addHash(entity, hasher);
    }

    // if we're able to handle the hash
    if (hashingSuccess) {

        // get result of the hash
        HashCode hashCode = hasher.hash();

        // Create the entity tag
        EntityTag entityTag = new EntityTag(hashCode.toString());

        // Check the etag
        Response.ResponseBuilder builder = request.evaluatePreconditions(entityTag);

        // not modified ?
        if (builder != null) {
            containerResponse.setResponse(builder.tag(entityTag).build());
        } else {
            // it has been changed, so send response with new ETag and entity
            Response.ResponseBuilder responseBuilder = Response.fromResponse(containerResponse.getResponse())
                    .tag(entityTag);
            containerResponse.setResponse(responseBuilder.build());
        }
    }

}

From source file:net.portalblockz.portalbot.webinterface.WebIntHandler.java

@Override
public void handle(HttpExchange httpExchange) throws IOException {
    //TODO: Make this dynamic with a page, add support for multiple pages, make it actually display info!
    /*String header = "<h1 style=\"color:red\">portalBot IRC Bot</h1>";
    String text =/*from   ww w .  j a  v  a 2s  .co m*/
        "<p>Welcome this is the beginning of a web interface for portalBot, its a WIP and right now does not have anything but this message on it!</p>";*/
    String footer = "<br><center>&copy; portalBlock " + year + "</center>";
    if (customFile) {
        if (!indexHash.equals(Files.hash(indexFile, Hashing.md5()).toString())) {
            reply = readFile(indexFile);
        }
    } else {
        reply = defaultContent;
    }
    String newReply;
    newReply = reply.replaceAll("%servers%", getJSONServers());
    newReply = newReply.replaceAll("%warns%", SmartListener.getJSONInfo());
    //reply = reply.replaceAll("%stats%", getJSONSystemStats());
    sendReply(httpExchange, newReply + footer);
}

From source file:org.usergrid.services.ServiceInfo.java

public ServiceInfo(String name, boolean rootService, String rootType, String containerType,
        String collectionName, String itemType, List<String> patterns, List<String> collections) {
    this.name = name;
    this.rootService = rootService;
    this.rootType = rootType;
    this.containerType = containerType;
    this.collectionName = collectionName;
    this.itemType = itemType;
    this.patterns = patterns;
    this.collections = collections;

    Hasher hasher = Hashing.md5().newHasher();

    for (String pattern : patterns) {
        hasher.putString(pattern);/*from   w w  w  . j a va 2 s .co m*/
    }

    hashCode = hasher.hash().asInt();
}

From source file:com.facebook.buck.zip.OverwritingZipOutputStream.java

@Override
protected void actuallyPutNextEntry(ZipEntry entry) throws IOException {
    // We calculate the actual offset when closing the stream, so 0 is fine.
    currentEntry = new EntryAccounting(clock, entry, /* currentOffset */ 0);

    long md5 = Hashing.md5().hashUnencodedChars(entry.getName()).asLong();
    String name = String.valueOf(md5);

    File file = new File(scratchDir, name);
    entries.put(file, currentEntry);/*  w w  w  . j a  va2  s  .c  o  m*/
    if (file.exists() && !file.delete()) {
        throw new ZipException("Unable to delete existing file: " + entry.getName());
    }
    currentOutput = new BufferedOutputStream(new FileOutputStream(file));
}

From source file:net.malisis.advert.advert.Advert.java

protected String calculateHash(byte[] img) {
    return Hashing.md5().hashBytes(img).toString();
}

From source file:com.facebook.buck.codegen.SourceSigner.java

/**
 * Given the contents of a source file containing 0 or more existing signatures
 * or signature placeholders, calculates an updated signature and updates
 * the signatures in the source file./*from www. j a v a2 s .c o m*/
 *
 * If the source file contains at least one signature, returns an Optional
 * containing the updated source file. Otherwise, returns Optional.absent().
 */
public static final Optional<String> sign(String source) {
    Matcher matcher = SIGNATURE_OR_PLACEHOLDER_PATTERN.matcher(source);
    Hasher md5Hasher = Hashing.md5().newHasher();
    int pos = 0;
    while (matcher.find()) {
        if (matcher.groupCount() == 1) {
            // Update the digest up to the matched md5, but then hash the
            // placeholder token instead of the md5.
            md5Hasher.putString(source.substring(pos, matcher.start()), Charsets.UTF_8);
            md5Hasher.putString(PLACEHOLDER, Charsets.UTF_8);
        } else {
            md5Hasher.putString(source.substring(pos, matcher.end()), Charsets.UTF_8);
        }
        pos = matcher.end();
    }

    if (pos > 0) {
        md5Hasher.putString(source.substring(pos), Charsets.UTF_8);
        matcher.reset();
        String newSignature = formatSignature(md5Hasher.hash().toString());
        return Optional.of(matcher.replaceAll(newSignature));
    } else {
        return Optional.absent();
    }
}