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:com.facebook.buck.zip.OverwritingZipOutputStreamImpl.java

@Override
public 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);//www.  j  a  v a 2 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));
}

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From source file:com.globo.galeb.consistenthash.HashAlgorithm.java

/**
 * Calc Hash./*from  www.j  av a 2 s  .co  m*/
 *
 * @param key the key
 * @return int hash
 */
public HashAlgorithm hash(Object key) {
    HashFunction hashAlgorithm;
    switch (hashType) {
    case MD5:
        hashAlgorithm = Hashing.md5();
        break;
    case MURMUR3_32:
        hashAlgorithm = Hashing.murmur3_32();
        break;
    case SHA256:
        hashAlgorithm = Hashing.sha256();
        break;
    case SIP24:
        hashAlgorithm = Hashing.sipHash24();
        break;
    default:
        hashAlgorithm = Hashing.sipHash24();
        break;
    }
    if (key instanceof String) {
        hashCode = hashAlgorithm.newHasher().putString((String) key, Charsets.UTF_8).hash();
    } else if (key instanceof Long) {
        hashCode = hashAlgorithm.newHasher().putLong((Long) key).hash();
    } else {
        hashCode = hashAlgorithm.newHasher().hash();
    }
    return this;
}

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From source file:pt.ist.fenix.ui.spring.controller.ApiServiceAgreementController.java

@RequestMapping(method = RequestMethod.GET, value = "show")
public String showServiceAgreementHtml(Model model, HttpServletRequest request) {
    String serviceAgreementHtml = getServiceAgreementHtml();
    model.addAttribute("serviceAgreement", serviceAgreementHtml);
    model.addAttribute("serviceAgreementChecksum",
            Hashing.md5().newHasher().putString(serviceAgreementHtml, Charsets.UTF_8).hash().toString());
    PortalLayoutInjector.skipLayoutOn(request);
    return "fenix-ist/public/showServiceAgreement";
}

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From source file:pt.ist.fenixedu.integration.ui.spring.controller.ApiServiceAgreementController.java

@RequestMapping(method = RequestMethod.GET, value = "show")
public String showServiceAgreementHtml(Model model, HttpServletRequest request) {
    String serviceAgreementHtml = getServiceAgreementHtml();
    model.addAttribute("serviceAgreement", serviceAgreementHtml);
    model.addAttribute("serviceAgreementChecksum",
            Hashing.md5().newHasher().putString(serviceAgreementHtml, Charsets.UTF_8).hash().toString());
    PortalLayoutInjector.skipLayoutOn(request);
    return "fenixedu-ist-integration/public/showServiceAgreement";
}

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From source file:org.apache.accumulo.core.sample.AbstractHashSampler.java

/**
 * Subclasses with options should override this method and call {@code super.init(config)}.
 *///from  w w  w  .j a  va 2s . c  om

@Override
public void init(SamplerConfiguration config) {
    String hasherOpt = config.getOptions().get("hasher");
    String modulusOpt = config.getOptions().get("modulus");

    requireNonNull(hasherOpt, "Hasher not specified");
    requireNonNull(modulusOpt, "Modulus not specified");

    for (String option : config.getOptions().keySet()) {
        checkArgument(isValidOption(option), "Unknown option : %s", option);
    }

    switch (hasherOpt) {
    case "murmur3_32":
        hashFunction = Hashing.murmur3_32();
        break;
    case "md5":
        hashFunction = Hashing.md5();
        break;
    case "sha1":
        hashFunction = Hashing.sha1();
        break;
    default:
        throw new IllegalArgumentException("Uknown hahser " + hasherOpt);
    }

    modulus = Integer.parseInt(modulusOpt);
}

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From source file:org.apache.beam.sdk.util.PackageUtil.java

/**
 * Compute and cache the attributes of a classpath element that we will need to stage it.
 *
 * @param classpathElement the file or directory to be staged.
 * @param stagingPath The base location for staged classpath elements.
 * @param overridePackageName If non-null, use the given value as the package name
 *                            instead of generating one automatically.
 * @return a {@link PackageAttributes} that containing metadata about the object to be staged.
 *//*  w  w  w.jav a 2  s  .  c o  m*/
static PackageAttributes createPackageAttributes(File classpathElement, String stagingPath,
        String overridePackageName) {
    try {
        boolean directory = classpathElement.isDirectory();

        // Compute size and hash in one pass over file or directory.
        Hasher hasher = Hashing.md5().newHasher();
        OutputStream hashStream = Funnels.asOutputStream(hasher);
        CountingOutputStream countingOutputStream = new CountingOutputStream(hashStream);

        if (!directory) {
            // Files are staged as-is.
            Files.asByteSource(classpathElement).copyTo(countingOutputStream);
        } else {
            // Directories are recursively zipped.
            ZipFiles.zipDirectory(classpathElement, countingOutputStream);
        }

        long size = countingOutputStream.getCount();
        String hash = Base64Variants.MODIFIED_FOR_URL.encode(hasher.hash().asBytes());

        // Create the DataflowPackage with staging name and location.
        String uniqueName = getUniqueContentName(classpathElement, hash);
        String resourcePath = IOChannelUtils.resolve(stagingPath, uniqueName);
        DataflowPackage target = new DataflowPackage();
        target.setName(overridePackageName != null ? overridePackageName : uniqueName);
        target.setLocation(resourcePath);

        return new PackageAttributes(size, hash, directory, target);
    } catch (IOException e) {
        throw new RuntimeException("Package setup failure for " + classpathElement, e);
    }
}

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From source file:org.dspace.ctask.replicate.CompareWithAIP.java

/**
 * Perform 'Compare with AIP' task/*from  www  .j  a v a2  s  . c  o m*/
 * @param dso DSpace Object to perform on
 * @return integer which represents Curator return status
 * @throws IOException 
 */
@Override
public int perform(DSpaceObject dso) throws AuthorizeException, IOException, SQLException {
    ReplicaManager repMan = ReplicaManager.instance();
    String id = dso.getHandle();
    status = Curator.CURATE_SUCCESS;
    result = "Checksums of local and remote agree";
    PackingSpec spec = repMan.packingSpec(dso);
    String objId = repMan.storageId(id, spec.getFormat());
    //First, make sure this object has an AIP in remote storage
    if (checkReplica(repMan, dso, spec)) {
        // generate an archive and calculate it's checksum
        Path packDir = repMan.stage(repMan.storeGroupName(), id);
        Path archive = Packager.toPackage(dso, spec, packDir);
        // RLR recheck
        String chkSum = Files.hash(archive.toFile(), Hashing.md5()).toString();
        //String chkSum = HashCode.fromLong(Files.checksum(archive, "md5")).toString();
        //String chkSum = Utils.checksum(archive, "MD5");
        // compare with replica
        String repChkSum = repMan.objectAttribute(repMan.storeGroupName(), objId, "checksum");
        if (!chkSum.equals(repChkSum)) {
            report("Local and remote checksums differ for: " + id);
            report("Local: " + chkSum + " replica: " + repChkSum);
            result = "Checksums of local and remote differ for: " + id;
            status = Curator.CURATE_FAIL;
        } else {
            report("Local and remote checksums agree for: " + id);
        }
        // if a container, also perform an extent (count) audit - i.e.
        // does replica store have replicas for each object in container?
        if (Curator.isContainer(dso) || dso.getType() == Constants.SITE) {
            auditExtent(repMan, dso, spec);
        }
    }
    setResult(result);
    return status;
}

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From source file:org.apache.beam.runners.dataflow.util.PackageUtil.java

/**
 * Compute and cache the attributes of a classpath element that we will need to stage it.
 *
 * @param source the file or directory to be staged.
 * @param stagingPath The base location for staged classpath elements.
 * @param overridePackageName If non-null, use the given value as the package name
 *                            instead of generating one automatically.
 * @return a {@link PackageAttributes} that containing metadata about the object to be staged.
 *//*from  w ww  . ja  v  a  2s .  c om*/
static PackageAttributes createPackageAttributes(File source, String stagingPath,
        @Nullable String overridePackageName) {
    boolean directory = source.isDirectory();

    // Compute size and hash in one pass over file or directory.
    Hasher hasher = Hashing.md5().newHasher();
    OutputStream hashStream = Funnels.asOutputStream(hasher);
    try (CountingOutputStream countingOutputStream = new CountingOutputStream(hashStream)) {
        if (!directory) {
            // Files are staged as-is.
            Files.asByteSource(source).copyTo(countingOutputStream);
        } else {
            // Directories are recursively zipped.
            ZipFiles.zipDirectory(source, countingOutputStream);
        }
        countingOutputStream.flush();

        long size = countingOutputStream.getCount();
        String hash = Base64Variants.MODIFIED_FOR_URL.encode(hasher.hash().asBytes());

        // Create the DataflowPackage with staging name and location.
        String uniqueName = getUniqueContentName(source, hash);
        String resourcePath = FileSystems.matchNewResource(stagingPath, true)
                .resolve(uniqueName, StandardResolveOptions.RESOLVE_FILE).toString();
        DataflowPackage target = new DataflowPackage();
        target.setName(overridePackageName != null ? overridePackageName : uniqueName);
        target.setLocation(resourcePath);

        return new PackageAttributes(size, hash, directory, target, source.getPath());
    } catch (IOException e) {
        throw new RuntimeException("Package setup failure for " + source, e);
    }
}

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From source file:sockslib.server.manager.HashPasswordProtector.java

private Hasher chooseHasher(HashAlgorithm algorithm) {
    Hasher hasher = null;/*from  w  ww.  j  ava 2  s  . c o m*/
    switch (algorithm) {

    case MD5:
        hasher = Hashing.md5().newHasher();
        break;
    case SHA1:
        hasher = Hashing.sha1().newHasher();
        break;
    case SHA256:
        hasher = Hashing.sha256().newHasher();
        break;
    case SHA512:
        hasher = Hashing.sha512().newHasher();
        break;

    }
    return hasher;
}

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From source file:org.jclouds.azureblob.blobstore.strategy.AzureBlobBlockUploadStrategy.java

@Override
public String execute(String container, Blob blob) {
    String blobName = blob.getMetadata().getName();
    Payload payload = blob.getPayload();
    Long length = payload.getContentMetadata().getContentLength();
    checkNotNull(length,/*from  w ww  . j  a  v a2s .  c  o  m*/
            "please invoke payload.getContentMetadata().setContentLength(length) prior to azure block upload");
    checkArgument(length <= (MAX_NUMBER_OF_BLOCKS * MAX_BLOCK_SIZE));
    long offset = 0L;
    List<String> blockIds = Lists.newArrayList();
    int blockCount = 0;
    int totalBlocks = (int) Math.ceil(((double) length) / MAX_BLOCK_SIZE);
    long bytesWritten = 0;
    while (offset < length) {
        blockCount++;
        long chunkSize = MAX_BLOCK_SIZE;
        if (length - offset < MAX_BLOCK_SIZE) {
            chunkSize = length % MAX_BLOCK_SIZE;
        }
        bytesWritten += chunkSize;
        Payload block = slicer.slice(payload, offset, chunkSize);
        offset += MultipartUploadStrategy.MAX_BLOCK_SIZE;
        String blockName = blobName + "-" + offset + "-" + new SecureRandom().nextInt();
        byte blockIdBytes[] = Hashing.md5().hashBytes(blockName.getBytes()).asBytes();
        String blockId = BaseEncoding.base64().encode(blockIdBytes);
        blockIds.add(blockId);
        client.putBlock(container, blobName, blockId, block);
    }
    checkState(bytesWritten == length, "Wrote %s bytes, but we wanted to write %s bytes", bytesWritten, length);
    return client.putBlockList(container, blobName, blockIds);
}

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