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:org.dllearner.reasoning.MaterializableFastInstanceChecker.java

private void loadOrDematerialize() {
    if (useCaching) {
        File cacheDir = new File("cache");
        cacheDir.mkdirs();//from w w w  . j  a v  a  2 s.  co  m
        HashFunction hf = Hashing.md5();
        Hasher hasher = hf.newHasher();
        hasher.putBoolean(materializeExistentialRestrictions);
        hasher.putBoolean(handlePunning);
        for (OWLOntology ont : rc.getOWLAPIOntologies()) {
            hasher.putInt(ont.getLogicalAxioms().hashCode());
            hasher.putInt(ont.getAxioms().hashCode());
        }
        String filename = hasher.hash().toString() + ".obj";

        File cacheFile = new File(cacheDir, filename);
        if (cacheFile.exists()) {
            logger.debug("Loading materialization from disk...");
            try (ObjectInputStream ois = new ObjectInputStream(new FileInputStream(cacheFile))) {
                Materialization mat = (Materialization) ois.readObject();
                classInstancesPos = mat.classInstancesPos;
                classInstancesNeg = mat.classInstancesNeg;
                opPos = mat.opPos;
                dpPos = mat.dpPos;
                bdPos = mat.bdPos;
                bdNeg = mat.bdNeg;
                dd = mat.dd;
                id = mat.id;
                sd = mat.sd;
            } catch (ClassNotFoundException | IOException e) {
                e.printStackTrace();
            }
            logger.debug("done.");
        } else {
            dematerialize();
            Materialization mat = new Materialization();
            mat.classInstancesPos = classInstancesPos;
            mat.classInstancesNeg = classInstancesNeg;
            mat.opPos = opPos;
            mat.dpPos = dpPos;
            mat.bdPos = bdPos;
            mat.bdNeg = bdNeg;
            mat.dd = dd;
            mat.id = id;
            mat.sd = sd;
            try (ObjectOutputStream oos = new ObjectOutputStream(new FileOutputStream(cacheFile))) {
                oos.writeObject(mat);
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    } else {
        dematerialize();
    }
}

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From source file:org.dllearner.reasoning.FastInstanceChecker.java

private void loadOrDematerialize() {
    if (useCaching) {
        File cacheDir = new File("cache");
        cacheDir.mkdirs();/*  ww w.j  a  va  2 s .c om*/
        HashFunction hf = Hashing.md5();
        Hasher hasher = hf.newHasher();
        hasher.putBoolean(materializeExistentialRestrictions);
        hasher.putBoolean(handlePunning);
        for (OWLOntology ont : rc.getOWLAPIOntologies()) {
            hasher.putInt(ont.getLogicalAxioms().hashCode());
            hasher.putInt(ont.getAxioms().hashCode());
        }
        String filename = hasher.hash().toString() + ".obj";

        File cacheFile = new File(cacheDir, filename);
        if (cacheFile.exists()) {
            logger.debug("Loading materialization from disk...");
            try (ObjectInputStream ois = new ObjectInputStream(new FileInputStream(cacheFile))) {
                Materialization mat = (Materialization) ois.readObject();
                classInstancesPos = mat.classInstancesPos;
                classInstancesNeg = mat.classInstancesNeg;
                opPos = mat.opPos;
                dpPos = mat.dpPos;
                bdPos = mat.bdPos;
                bdNeg = mat.bdNeg;
                dd = mat.dd;
                id = mat.id;
                sd = mat.sd;
            } catch (ClassNotFoundException | IOException e) {
                e.printStackTrace();
            }
            logger.debug("done.");
        } else {
            materialize();
            Materialization mat = new Materialization();
            mat.classInstancesPos = classInstancesPos;
            mat.classInstancesNeg = classInstancesNeg;
            mat.opPos = opPos;
            mat.dpPos = dpPos;
            mat.bdPos = bdPos;
            mat.bdNeg = bdNeg;
            mat.dd = dd;
            mat.id = id;
            mat.sd = sd;
            try (ObjectOutputStream oos = new ObjectOutputStream(new FileOutputStream(cacheFile))) {
                oos.writeObject(mat);
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    } else {
        materialize();
    }
}

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From source file:com.infinities.keystone4j.utils.Cms.java

public String hashToken(String tokenid, Algorithm mode)
        throws UnsupportedEncodingException, NoSuchAlgorithmException, DecoderException {
    if (mode == null) {
        mode = Algorithm.md5;/*  ww w.  ja va  2s .co m*/
    }

    if (Strings.isNullOrEmpty(tokenid)) {
        throw new NullPointerException("invalid tokenid");
    }

    if (isAsn1Token(tokenid) || isPkiz(tokenid)) {
        HashFunction hf = Hashing.md5();
        if (mode == Algorithm.sha1) {
            hf = Hashing.sha1();
        } else if (mode == Algorithm.sha256) {
            hf = Hashing.sha256();
        } else if (mode == Algorithm.sha512) {
            hf = Hashing.sha512();
        }
        HashCode hc = hf.newHasher().putString(tokenid).hash();
        return toHex(hc.asBytes());

    } else {
        return tokenid;
    }
}

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From source file:annis.libgui.AnnisBaseUI.java

/**
* Inject CSS into the UI./* w  w w.  jav a2s. c om*/
* This function will not add multiple style-elements if the
* exact CSS string was already added.
* @param cssContent
*/
public void injectUniqueCSS(String cssContent) {
    if (alreadyAddedCSS == null) {
        alreadyAddedCSS = new TreeSet<String>();
    }
    String hashForCssContent = Hashing.md5().hashString(cssContent).toString();
    if (!alreadyAddedCSS.contains(hashForCssContent)) {
        CSSInject cssInject = new CSSInject(UI.getCurrent());
        cssInject.setStyles(cssContent);
        alreadyAddedCSS.add(hashForCssContent);
    }
}

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From source file:org.apache.twill.discovery.ZKDiscoveryService.java

/**
 * Generate unique node path for a given {@link Discoverable}.
 * @param discoverable An instance of {@link Discoverable}.
 * @return A node name based on the discoverable.
 *//*w  w w  . ja v a  2 s  .  c om*/
private String getNodePath(Discoverable discoverable) {
    InetSocketAddress socketAddress = discoverable.getSocketAddress();
    String node = Hashing.md5().newHasher().putBytes(socketAddress.getAddress().getAddress())
            .putInt(socketAddress.getPort()).hash().toString();

    return String.format("/%s/%s", discoverable.getName(), node);
}

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From source file:net.ftb.util.DownloadUtils.java

/**
 * Gets the md5 of the downloaded file/*from  w  w  w. ja  va2  s. c  o m*/
 * @param file - File to check
 * @return - string of file's md5
 * @throws IOException 
 */
public static String fileMD5(File file) throws IOException {
    if (file.exists()) {
        return Files.hash(file, Hashing.md5()).toString();
        //FileInputStream fis = new FileInputStream(file);
        //String result = DigestUtils.md5Hex(fis);
        //fis.close();
        //return result;
    } else
        return "";
}

---

From source file:com.google.devtools.build.lib.vfs.FileSystem.java

/**
 * Returns the MD5 digest of the file denoted by {@code path}. See
 * {@link Path#getMD5Digest} for specification.
 *//*  w ww .  ja v  a  2s  .co  m*/
protected byte[] getMD5Digest(final Path path) throws IOException {
    // Naive I/O implementation.  Subclasses may (and do) optimize.
    // This code is only used by the InMemory or Zip or other weird FSs.
    return new ByteSource() {
        @Override
        public InputStream openStream() throws IOException {
            return getInputStream(path);
        }
    }.hash(Hashing.md5()).asBytes();
}

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From source file:org.sonatype.nexus.proxy.maven.maven2.M2Repository.java

@Override
protected StorageItem doRetrieveItem(ResourceStoreRequest request)
        throws IllegalOperationException, ItemNotFoundException, StorageException {
    // we do all this mockery (NEXUS-4218 and NEXUS-4243) ONLY when we are sure
    // that we deal with REMOTE REQUEST INITIATED BY OLD 2.x MAVEN and nothing else.
    // Before this fix, the code was executed whenever
    // "!ModelVersionUtility.LATEST_MODEL_VERSION.equals( userSupportedVersion ) )" was true
    // and it was true even for userSupportedVersion being null (ie. not user agent string supplied!)!!!
    final boolean remoteCall = request.getRequestContext().containsKey(AccessManager.REQUEST_REMOTE_ADDRESS);
    final String userAgent = (String) request.getRequestContext().get(AccessManager.REQUEST_AGENT);

    if (remoteCall && null != userAgent) {
        final Version userSupportedVersion = getClientSupportedVersion(userAgent);

        // we still can make up our mind here, we do this only if we know: this request is about metadata,
        // the client's metadata version is known and it is not the latest one
        if (M2ArtifactRecognizer.isMetadata(request.getRequestPath()) && userSupportedVersion != null
                && !ModelVersionUtility.LATEST_MODEL_VERSION.equals(userSupportedVersion)) {
            // metadata checksum files are calculated and cached as side-effect
            // of doRetrieveMetadata.
            final StorageFileItem mdItem;
            if (M2ArtifactRecognizer.isChecksum(request.getRequestPath())) {
                String path = request.getRequestPath();
                if (request.getRequestPath().endsWith(".md5")) {
                    path = path.substring(0, path.length() - 4);
                } else if (request.getRequestPath().endsWith(".sha1")) {
                    path = path.substring(0, path.length() - 5);
                }//from  w w  w .  ja v  a2 s  .c om
                // we have to keep original reqest's flags: localOnly and remoteOnly are strange ones, so
                // we do a hack here
                // second, since we initiate a request for different path within a context of this request,
                // we need to be careful about it
                ResourceStoreRequest mdRequest = new ResourceStoreRequest(path, request.isRequestLocalOnly(),
                        request.isRequestRemoteOnly());
                mdRequest.getRequestContext().setParentContext(request.getRequestContext());

                mdItem = (StorageFileItem) super.retrieveItem(false, mdRequest);
            } else {
                mdItem = (StorageFileItem) super.doRetrieveItem(request);
            }

            try {
                Metadata metadata;
                try (final InputStream inputStream = mdItem.getInputStream()) {
                    metadata = MetadataBuilder.read(inputStream);
                }

                Version requiredVersion = getClientSupportedVersion(userAgent);
                Version metadataVersion = ModelVersionUtility.getModelVersion(metadata);

                if (requiredVersion == null || requiredVersion.equals(metadataVersion)) {
                    return super.doRetrieveItem(request);
                }

                ModelVersionUtility.setModelVersion(metadata, requiredVersion);

                ByteArrayOutputStream mdOutput = new ByteArrayOutputStream();

                MetadataBuilder.write(metadata, mdOutput);

                final byte[] content;
                if (M2ArtifactRecognizer.isChecksum(request.getRequestPath())) {
                    String digest;
                    if (request.getRequestPath().endsWith(".md5")) {
                        digest = Hashing.md5().hashBytes(mdOutput.toByteArray()).toString();
                    } else {
                        digest = Hashing.sha1().hashBytes(mdOutput.toByteArray()).toString();
                    }
                    content = (digest + '\n').getBytes("UTF-8");
                } else {
                    content = mdOutput.toByteArray();
                }

                String mimeType = getMimeSupport().guessMimeTypeFromPath(getMimeRulesSource(),
                        request.getRequestPath());
                ContentLocator contentLocator = new ByteArrayContentLocator(content, mimeType);

                DefaultStorageFileItem result = new DefaultStorageFileItem(this, request, true, false,
                        contentLocator);
                result.setCreated(mdItem.getCreated());
                result.setModified(System.currentTimeMillis());
                return result;
            } catch (IOException e) {
                if (log.isDebugEnabled()) {
                    log.error("Error parsing metadata, serving as retrieved", e);
                } else {
                    log.error("Error parsing metadata, serving as retrieved: " + e.getMessage());
                }

                return super.doRetrieveItem(request);
            }
        }
    }

    return super.doRetrieveItem(request);
}

---

From source file:com.marvinformatics.formatter.FormatterMojo.java

/**
 * @param str//from  w  w  w  .  ja v a  2  s .  c  o m
 * @return
 * @throws UnsupportedEncodingException
 */
private String md5hash(String str) throws UnsupportedEncodingException {
    return Hashing.md5().hashBytes(str.getBytes(encoding)).toString();
}

---

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

private Blob createBlobFromByteSource(final String container, final String key, final ByteSource byteSource) {
    BlobBuilder builder = blobBuilders.get();
    builder.name(key);//from   ww  w  .j a  v a 2s.c om
    File file = getFileForBlobKey(container, key);
    try {
        String cacheControl = null;
        String contentDisposition = null;
        String contentEncoding = null;
        String contentLanguage = null;
        String contentType = null;
        HashCode hashCode = null;
        Date expires = null;
        ImmutableMap.Builder<String, String> userMetadata = ImmutableMap.builder();

        UserDefinedFileAttributeView view = getUserDefinedFileAttributeView(file.toPath());
        if (view != null) {
            Set<String> attributes = ImmutableSet.copyOf(view.list());

            cacheControl = readStringAttributeIfPresent(view, attributes, XATTR_CACHE_CONTROL);
            contentDisposition = readStringAttributeIfPresent(view, attributes, XATTR_CONTENT_DISPOSITION);
            contentEncoding = readStringAttributeIfPresent(view, attributes, XATTR_CONTENT_ENCODING);
            contentLanguage = readStringAttributeIfPresent(view, attributes, XATTR_CONTENT_LANGUAGE);
            contentType = readStringAttributeIfPresent(view, attributes, XATTR_CONTENT_TYPE);
            if (contentType == null && autoDetectContentType) {
                contentType = probeContentType(file.toPath());
            }
            if (attributes.contains(XATTR_CONTENT_MD5)) {
                ByteBuffer buf = ByteBuffer.allocate(view.size(XATTR_CONTENT_MD5));
                view.read(XATTR_CONTENT_MD5, buf);
                hashCode = HashCode.fromBytes(buf.array());
            }
            if (attributes.contains(XATTR_EXPIRES)) {
                ByteBuffer buf = ByteBuffer.allocate(view.size(XATTR_EXPIRES));
                view.read(XATTR_EXPIRES, buf);
                buf.flip();
                expires = new Date(buf.asLongBuffer().get());
            }
            for (String attribute : attributes) {
                if (!attribute.startsWith(XATTR_USER_METADATA_PREFIX)) {
                    continue;
                }
                String value = readStringAttributeIfPresent(view, attributes, attribute);
                userMetadata.put(attribute.substring(XATTR_USER_METADATA_PREFIX.length()), value);
            }

            builder.payload(byteSource).cacheControl(cacheControl).contentDisposition(contentDisposition)
                    .contentEncoding(contentEncoding).contentLanguage(contentLanguage)
                    .contentLength(byteSource.size()).contentMD5(hashCode).contentType(contentType)
                    .expires(expires).userMetadata(userMetadata.build());
        } else {
            builder.payload(byteSource).contentLength(byteSource.size())
                    .contentMD5(byteSource.hash(Hashing.md5()).asBytes());
        }
    } catch (IOException e) {
        throw Throwables.propagate(e);
    }
    Blob blob = builder.build();
    blob.getMetadata().setContainer(container);
    blob.getMetadata().setLastModified(new Date(file.lastModified()));
    blob.getMetadata().setSize(file.length());
    if (blob.getPayload().getContentMetadata().getContentMD5() != null)
        blob.getMetadata()
                .setETag(base16().lowerCase().encode(blob.getPayload().getContentMetadata().getContentMD5()));
    return blob;
}

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