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.fabrician.enabler.util.DockerfileBuildLock.java

private DockerfileBuildLock(String dockerImageName, File dockerFilePath) throws Exception {
    this.dockerImageName = dockerImageName;
    this.dockerFilePath = dockerFilePath;

    byte[] docker_bytes = FileUtils.readFileToByteArray(dockerFilePath);
    // we create a hash file name from the image and dockerfile content to build with...
    HashFunction hf = Hashing.md5();
    HashCode hc = hf.newHasher().putString(dockerImageName, Charsets.UTF_8).putBytes(docker_bytes).hash();
    String dockerFileHash = BaseEncoding.base64Url().encode(hc.asBytes());
    File tmpDir = new File(System.getProperty("java.io.tmpdir"));
    lock_file = new File(tmpDir, dockerFileHash + ".dockerfile_lck");
    logger.info("Attempt to acquire Dockerfile build lock at path :" + lock_file);
    lock_channel = FileUtils.openOutputStream(lock_file).getChannel();
    lock = lock_channel.tryLock();/*  ww  w.  j a  v a2s  .  com*/

    if (lock == null) {
        throw new Exception("Can't create exclusive build lock for image [" + dockerImageName
                + "] for Dockerfile [" + dockerFilePath + "]");
    } else {
        logger.info("Acquired Dockerfile build lock at lock path : [" + lock_file + "]");
    }
}

From source file:com.googlesource.gerrit.plugins.xdocs.XDocCache.java

private String getParentsHash(Project.NameKey project) {
    Hasher h = Hashing.md5().newHasher();
    ProjectState p = projectCache.get(project);
    if (p != null) {
        for (ProjectState parent : p.parents()) {
            h.putUnencodedChars(/*w  w  w .  ja  v  a  2  s . c o m*/
                    parent.getConfig().getRevision() != null ? parent.getConfig().getRevision().getName()
                            : ObjectId.zeroId().getName());
        }
    }
    return h.hash().toString();
}

From source file:org.gradle.api.internal.changedetection.state.CachingFileSnapshotter.java

@Override
public FileSnapshot snapshot(TextResource resource) {
    File file = resource.getFile();
    if (file != null) {
        return snapshot(file);
    }//from  ww w  .  j  a  v a  2 s.c  o  m
    final HashCode md5 = Hashing.md5().hashString(resource.getText(), Charsets.UTF_8);
    return new FileSnapshot() {
        @Override
        public HashCode getHash() {
            return md5;
        }
    };
}

From source file:co.turnus.versioning.impl.SimpleFileVersioner.java

@Override
public Version getVersion(File file) {
    Date date = new Date();
    Version v = VersioningFactory.eINSTANCE.createVersion();
    v.setVersioningDate(date);//  w ww. j av a2  s.com

    if (file != null && file.exists()) {
        v.setLastModificationDate(new Date(file.lastModified()));
        try {
            v.setId(Files.hash(file, Hashing.md5()).toString());
        } catch (Exception e) {
            v.setId(UUID.randomUUID().toString());
        }
    } else {
        v.setLastModificationDate(date);
        v.setId(UUID.randomUUID().toString());
    }

    v.setAttribute("versioner", NAME);

    return v;
}

From source file:iox.easycache.CachingApplier.java

protected HashFunction createHash() {
    return Hashing.md5();
}

From source file:com.google.gitiles.doc.TocFormatter.java

String idFromHeader(HeaderNode header) {
    String id = ids.get(header);//  w ww  .j  a va  2 s .c o m
    if (id == null) {
        String title = MarkdownUtil.getInnerText(header);
        if (title == null) {
            return null;
        }

        id = idFromTitle(title);
        if (ids.values().contains(id)) {
            id = String.format("%s-%x", id, Hashing.md5().hashString(id, StandardCharsets.UTF_8).asInt());
        }
        ids.put(header, id);
    }
    return id;
}

From source file:lbaas.util.HashAlgorithm.java

public int hash(Object key) {
    HashCode hashCode;/*from   www . ja v  a  2s  .  c om*/
    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 hashCode.asInt();
}

From source file:org.gradle.api.internal.changedetection.rules.TaskTypeTaskStateChanges.java

private static HashCode calculateActionClassLoaderHash(Collection<ClassLoader> taskActionClassLoaders,
        ClassLoaderHierarchyHasher classLoaderHierarchyHasher) {
    if (taskActionClassLoaders.isEmpty()) {
        return NO_ACTION_LOADERS;
    }/*www .  j a v a  2  s . c  om*/
    Hasher hasher = Hashing.md5().newHasher();
    for (ClassLoader taskActionClassLoader : taskActionClassLoaders) {
        HashCode actionLoaderHash = classLoaderHierarchyHasher.getClassLoaderHash(taskActionClassLoader);
        if (actionLoaderHash == null) {
            return null;
        }
        hasher.putBytes(actionLoaderHash.asBytes());
    }
    return hasher.hash();
}

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

/**
 * Given the contents of a source file, checks if a signature is present,
 * and if so, checks if the signature is valid.
 *///from  w ww  .  j av a 2 s  . c o m
public static final SignatureStatus getSignatureStatus(String source) {
    Matcher matcher = SIGNATURE_PATTERN.matcher(source);
    if (!matcher.find()) {
        return SignatureStatus.UNSIGNED;
    }

    if (matcher.groupCount() == 1) {
        String sourceSignature = matcher.group("signature");
        String sourceSignatureReplacedWithToken = matcher.replaceFirst(SIGNED_SOURCE_PLACEHOLDER);
        String expectedSignature = Hashing.md5().hashString(sourceSignatureReplacedWithToken, Charsets.UTF_8)
                .toString();
        if (sourceSignature.equals(expectedSignature)) {
            return SignatureStatus.OK;
        }
    }

    return SignatureStatus.INVALID;
}

From source file:org.rf.ide.core.executor.ArgumentsFile.java

File writeToTemporaryOrUseAlreadyExisting() throws IOException {
    final String content = generateContent();
    // it's deprecated although we don't need security here, so md5 is fine
    @SuppressWarnings("deprecation")
    final HashFunction md5Hasher = Hashing.md5();
    final HashCode hash = md5Hasher.hashString(content, Charsets.UTF_8);

    final String fileName = "args_" + Strings.padStart(Integer.toHexString(hash.asInt()), 8, '0') + ".arg";
    final Path dir = RobotRuntimeEnvironment.createTemporaryDirectory();

    for (final File existingArgFile : dir.toFile().listFiles((d, name) -> name.equals(fileName))) {
        final HashCode candidateHash = md5Hasher
                .hashString(Files.asCharSource(existingArgFile, Charsets.UTF_8).read(), Charsets.UTF_8);
        if (hash.equals(candidateHash)) {
            return existingArgFile;
        }// w w w. ja v a2s .c o  m
    }

    final File filePath = dir.resolve(fileName).toFile();
    writeTo(filePath);
    return filePath;
}