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.scireum.SDSMojo.java

private String computeContentHash(File artifactFile) throws IOException {
    return ByteStreams.hash(Files.newInputStreamSupplier(artifactFile), Hashing.md5()).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//w  w w  .  j a  v  a  2 s. c o 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.eclipse.che.api.watcher.server.detectors.EditorFileTracker.java

private String hashFile(String wsPath) {
    try {/*from ww  w.  j  a  va2  s .  c o  m*/
        File file = fsManager.toIoFile(wsPath);
        return file == null ? Hashing.md5().hashString("", defaultCharset()).toString()
                : hash(file, Hashing.md5()).toString();
    } catch (IOException e) {
        LOG.error("Error trying to read {} file and broadcast it", wsPath, e);
    }
    return null;
}

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From source file:com.facebook.buck.versions.VersionedTargetGraphBuilder.java

/**
 * @return a flavor to which summarizes the given version selections.
 *//*ww w.ja v  a 2 s  .  com*/
static Flavor getVersionedFlavor(SortedMap<BuildTarget, Version> versions) {
    Preconditions.checkArgument(!versions.isEmpty());
    Hasher hasher = Hashing.md5().newHasher();
    for (Map.Entry<BuildTarget, Version> ent : versions.entrySet()) {
        hasher.putString(ent.getKey().toString(), Charsets.UTF_8);
        hasher.putString(ent.getValue().getName(), Charsets.UTF_8);
    }
    return ImmutableFlavor.of("v" + hasher.hash().toString().substring(0, 7));
}

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From source file:com.qubole.rubix.core.CachingFileSystem.java

@Override
public BlockLocation[] getFileBlockLocations(FileStatus file, long start, long len) throws IOException {
    if (!clusterManager.isMaster() || cacheSkipped) {
        // If in worker node, blockLocation does not matter
        return fs.getFileBlockLocations(file, start, len);
    }//from  www .  ja  v a2 s  .  com

    List<String> nodes = clusterManager.getNodes();

    if (file == null) {
        return null;
    } else if (start >= 0L && len >= 0L) {
        if (file.getLen() < start) {
            return new BlockLocation[0];
        } else {
            // Using similar logic of returning all Blocks as FileSystem.getFileBlockLocations does instead of only returning blocks from start till len

            BlockLocation[] blockLocations = new BlockLocation[(int) Math
                    .ceil((double) file.getLen() / clusterManager.getSplitSize())];
            int blockNumber = 0;
            for (long i = 0; i < file.getLen(); i = i + clusterManager.getSplitSize()) {
                long end = i + clusterManager.getSplitSize();
                if (end > file.getLen()) {
                    end = file.getLen();
                }
                String key = file.getPath().toString() + i + end;
                HashFunction hf = Hashing.md5();
                HashCode hc = hf.hashString(key, Charsets.UTF_8);
                int nodeIndex = Hashing.consistentHash(hc, nodes.size());
                String[] name = new String[] { nodes.get(nodeIndex) };
                String[] host = new String[] { nodes.get(nodeIndex) };
                blockLocations[blockNumber++] = new BlockLocation(name, host, i, end - i);
                log.info(String.format("BlockLocation %s %d %d %s totalHosts: %s", file.getPath().toString(), i,
                        end - i, host[0], nodes.size()));
            }

            return blockLocations;
        }
    } else {
        throw new IllegalArgumentException("Invalid start or len parameter");
    }
}

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From source file:org.lenskit.data.store.PackedEntityCollection.java

@Override
public void describeTo(DescriptionWriter writer) {
    writer.putField("entity_count", size);
    writer.putList("attributes", attributes);
    if (contentHash == null) {
        Hasher hash = Hashing.md5().newHasher();
        for (int i = 0; i < size; i++) {
            hash.putLong(idStore.getLong(i));
            for (int j = 1; j < attributes.size(); j++) {
                hash.putInt(Objects.hashCode(attrStores[j].get(i)));
            }/*from   ww  w . j av  a  2  s  .  co  m*/
        }
        contentHash = hash.hash();
    }
    writer.putField("content_hash", contentHash);
}

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From source file:ca.ualberta.physics.cssdp.file.service.CacheService.java

private String getMD5(File file) {

    try {/*from ww  w  . j av  a 2  s .  c o m*/

        HashCode hashcode = Files.hash(file, Hashing.md5());

        String md5HexString = hashcode.toString();
        return md5HexString;

    } catch (IOException e) {
        throw Throwables.propagate(e);
    }
}

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From source file:net.nharyes.drivecopy.biz.wfm.FileStorageWorkflowManagerImpl.java

private FileBO upsert(FileBO file, boolean upload) throws WorkflowManagerException {

    try {/*from w  ww.j a  v  a 2s .co  m*/

        // get token
        TokenBO token = getToken();

        // log action
        if (upload)
            logger.info(String.format("Upload '%s' to entry '%s'", file.getFile().getAbsolutePath(),
                    file.getName()));
        else
            logger.info(String.format("Replace entry '%s' with '%s'", file.getName(),
                    file.getFile().getAbsolutePath()));

        // check force option
        if (upload && file.isForce())
            logger.warning("force option ignored");

        EntryBO entry = null;
        String parentId = null;
        try {

            // process folders and get parent ID
            parentId = driveSdo.getLastFolderId(token, extractFolders(file.getName()), file.isCreateFolders());

            // search entry
            entry = driveSdo.searchEntry(token, extractFileName(file.getName()), parentId);

            if (upload) {

                // entry already exists
                throw new SdoException(String.format("Entry with name '%s' already exists", file.getName()));
            }

        } catch (ItemNotFoundException ex) {

            // check force option
            if (!upload && !file.isForce()) {

                // re-throw exception
                throw ex;

            } else if (!upload && file.isForce()) {

                // switch to upload mode
                upload = true;
                logger.info("Switched to upload mode");
            }

            if (upload) {

                // compose BO
                entry = new EntryBO();
                entry.setName(extractFileName(file.getName()));
            }
        }

        // set file property
        entry.setFile(file.getFile());

        // set MIME type property
        entry.setMimeType(file.getMimeType());

        // check skip revision option
        if (file.isSkipRevision() && upload)
            logger.warning("skip revision option ignored");
        else
            entry.setSkipRevision(file.isSkipRevision());

        // check directory
        DirectoryBO dirBO = new DirectoryBO();
        if (file.isDirectory()) {

            // compress directory
            logger.info(String.format("Compress directory with level '%d'", file.getCompressionLevel()));
            dirBO.setFile(file.getFile());
            dirBO.setLevel(file.getCompressionLevel());
            dirBO = directoryCompressorWorkflowManager.handleWorkflow(dirBO,
                    DirectoryCompressorWorkflowManager.ACTION_COMPRESS);

            // replace file
            entry.setFile(dirBO.getFile());

            // in case set ZIP MIME type
            if (entry.getMimeType() == null)
                entry.setMimeType("application/zip");

        } else {

            // in case set generic MIME type
            if (entry.getMimeType() == null)
                entry.setMimeType("application/octet-stream");
        }

        // upload/replace entry
        logger.info(String.format("MIME type of the entry: %s", entry.getMimeType()));
        if (upload)
            entry = driveSdo.uploadEntry(token, entry, parentId);
        else
            entry = driveSdo.updateEntry(token, entry);

        // in case check MD5 of the replaced entry
        if (file.isCheckMd5()) {

            // calculate MD5 of the local file/directory
            logger.info("calculate the MD5 summary of the file...");
            byte[] digest = Files.hash(entry.getFile(), Hashing.md5()).asBytes();
            String sDigest = new BigInteger(1, digest).toString(16);
            logger.fine(String.format("digest of the file: %s", sDigest));
            logger.fine(String.format("digest of the entry: %s", entry.getMd5Sum()));

            // compare digests
            if (!sDigest.equalsIgnoreCase(entry.getMd5Sum()))
                throw new WorkflowManagerException("wrong digest!");
            logger.info("digests comparison OK");
        }

        // in case delete temporary file
        if (file.isDirectory()) {

            logger.fine("Delete temporary file");
            entry.getFile().delete();
        }

        // in case delete file or directory
        if (file.isDeleteAfter()) {

            logger.info("Process file(s) for deletion...");
            processFileForDeletion(file.getFile(), dirBO.getNotCompressed());
        }

        // return updated entry
        FileBO fBO = new FileBO();
        fBO.setFile(entry.getFile());
        fBO.setName(entry.getName());
        return fBO;

    } catch (SdoException ex) {

        // re-throw exception
        throw new WorkflowManagerException(ex.getMessage(), ex);

    } catch (IOException ex) {

        // re-throw exception
        throw new WorkflowManagerException(ex.getMessage(), ex);
    }
}

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From source file:com.google.api.control.aggregator.ReportRequestAggregator.java

/**
 * Obtains the {@hashCode} for the contents of {@code value}.
 *
 * @param value a {@code Operation} to be signed
 * @return the {@code HashCode} corresponding to {@code value}
 *//* w w  w  .  j a  va 2 s  .c  om*/
private static HashCode sign(Operation value) {
    Hasher h = Hashing.md5().newHasher();
    h.putString(value.getConsumerId(), StandardCharsets.UTF_8);
    h.putChar('\0');
    h.putString(value.getOperationName(), StandardCharsets.UTF_8);
    h.putChar('\0');
    return Signing.putLabels(h, value.getLabels()).hash();
}

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From source file:com.google.idea.blaze.base.wizard2.ui.BlazeEditProjectViewControl.java

public void update(BlazeNewProjectBuilder builder) {
    BlazeSelectWorkspaceOption workspaceOption = builder.getWorkspaceOption();
    BlazeSelectProjectViewOption projectViewOption = builder.getProjectViewOption();
    String workspaceName = workspaceOption.getWorkspaceName();
    WorkspaceRoot workspaceRoot = workspaceOption.getWorkspaceRoot();
    WorkspacePath workspacePath = projectViewOption.getSharedProjectView();
    String initialProjectViewText = projectViewOption.getInitialProjectViewText();
    boolean allowAddDefaultValues = projectViewOption.allowAddDefaultProjectViewValues()
            && allowAddprojectViewDefaultValues.getValue();
    WorkspacePathResolver workspacePathResolver = workspaceOption.getWorkspacePathResolver();

    HashCode hashCode = Hashing.md5().newHasher().putUnencodedChars(workspaceName)
            .putUnencodedChars(workspaceRoot.toString())
            .putUnencodedChars(workspacePath != null ? workspacePath.toString() : "")
            .putUnencodedChars(initialProjectViewText != null ? initialProjectViewText : "")
            .putBoolean(allowAddDefaultValues).hash();

    // If any params have changed, reinit the control
    if (!hashCode.equals(paramsHash)) {
        this.paramsHash = hashCode;
        init(workspaceName, workspaceRoot, workspacePathResolver, workspacePath, initialProjectViewText,
                allowAddDefaultValues);/*from w w  w  . java 2s . c o  m*/
    }
}

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