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.google.gerrit.server.change.ChangeResource.java

@Override
public String getETag() {
    CurrentUser user = control.getUser();
    Hasher h = Hashing.md5().newHasher();
    if (user.isIdentifiedUser()) {
        h.putString(starredChangesUtil.getObjectId(user.getAccountId(), getId()).name(), UTF_8);
    }//  w w  w.  java2 s.c o m
    prepareETag(h, user);
    return h.hash().toString();
}

From source file:org.dspace.ctask.replicate.store.DuraCloudObjectStore.java

@Override
public long transferObject(String group, Path file) throws IOException {
    long size = 0L;
    String chkSum = com.google.common.io.Files.hash(file.toFile(), Hashing.md5()).toString(); //Utils.checksum(file, "MD5");
    // make sure this is a different file from what replica store has
    // to avoid network I/O tax
    try {/*  w ww  .j a  v a 2 s . c o  m*/
        Map<String, String> attrs = dcStore.getContentProperties(getSpaceID(group),
                getContentPrefix(group) + file.getFileName().toString());
        if (!chkSum.equals(attrs.get(ContentStore.CONTENT_CHECKSUM))) {
            size = uploadReplica(group, file, chkSum);
        }
    } catch (NotFoundException nfE) {
        // no extant replica - proceed
        size = uploadReplica(group, file, chkSum);
    } catch (ContentStoreException csE) {
        throw new IOException(csE);
    }
    // delete staging file
    Files.delete(file);
    return size;
}

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

private Hasher createHasher() {
    Hasher hasher = Hashing.md5().newHasher();
    hasher.putBytes(SIGNATURE);
    return hasher;
}

From source file:qa.qcri.nadeef.tools.CommonTools.java

/**
 * Converts a string into an integer hashcode.
 * @param value string value.// w ww . j  a  v  a2  s. c o  m
 * @return integer hashcode.
 */
public static int toHashCode(String value) {
    return Math.abs(Hashing.md5().newHasher().putString(value, Charset.forName("UTF8")).hash().asInt());
}

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

@Override
protected void configure() {
    bind(Settings.class).toInstance(new Settings(SHUTDOWN_GRACE_PERIOD.get(), SNAPSHOT_INTERVAL.get()));

    bind(new TypeLiteral<Boolean>() {
    }).annotatedWith(ExperimentalTaskStore.class).toInstance(DbModule.USE_DB_TASK_STORE.get());

    bind(new TypeLiteral<Amount<Integer, Data>>() {
    }).annotatedWith(MaxEntrySize.class).toInstance(MAX_LOG_ENTRY_SIZE.get());
    bind(LogManager.class).in(Singleton.class);
    bind(LogStorage.class).in(Singleton.class);

    bind(new TypeLiteral<Set<String>>() {
    }).annotatedWith(HydrateSnapshotFields.class).toInstance(HYDRATE_SNAPSHOT_FIELDS.get());

    install(CallOrderEnforcingStorage.wrappingModule(LogStorage.class));
    bind(DistributedSnapshotStore.class).to(LogStorage.class);
    expose(Storage.class);
    expose(NonVolatileStorage.class);
    expose(DistributedSnapshotStore.class);
    expose(new TypeLiteral<Boolean>() {
    }).annotatedWith(ExperimentalTaskStore.class);
    expose(new TypeLiteral<Set<String>>() {
    }).annotatedWith(HydrateSnapshotFields.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.
    bind(HashFunction.class).annotatedWith(LogEntryHashFunction.class).toInstance(Hashing.md5());

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

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

From source file:net.minecraftforge.fml.relauncher.libraries.Repository.java

public File archive(Artifact artifact, File file, byte[] manifest) {
    File target = artifact.getFile();
    try {/*from w  w  w. j a v  a2  s  . co m*/
        if (target.exists()) {
            FMLLog.log.debug("Maven file already exists for {}({}) at {}, deleting duplicate.", file.getName(),
                    artifact.toString(), target.getAbsolutePath());
            file.delete();
        } else {
            FMLLog.log.debug("Moving file {}({}) to maven repo at {}.", file.getName(), artifact.toString(),
                    target.getAbsolutePath());
            Files.move(file, target);

            if (artifact.isSnapshot()) {
                SnapshotJson json = SnapshotJson.create(artifact.getSnapshotMeta());
                json.add(new SnapshotJson.Entry(artifact.getTimestamp(),
                        Files.hash(target, Hashing.md5()).toString()));
                json.write(artifact.getSnapshotMeta());
            }

            if (!LibraryManager.DISABLE_EXTERNAL_MANIFEST) {
                File meta_target = new File(target.getAbsolutePath() + ".meta");
                Files.write(manifest, meta_target);
            }
        }
        return target;
    } catch (IOException e) {
        FMLLog.log.error(FMLLog.log.getMessageFactory().newMessage("Error moving file {} to {}", file,
                target.getAbsolutePath()), e);
    }
    return file;
}

From source file:org.eclipse.che.api.vfs.impl.file.event.detectors.FileTrackingRegistry.java

private String getHash(String path) {
    try {//from   w  ww .j a v a2  s  .c  om
        final VirtualFile file = vfsProvider.getVirtualFileSystem().getRoot().getChild(Path.of(path));
        String content;
        if (file == null) {
            content = "";
        } else {
            content = file.getContentAsString();
        }

        return Hashing.md5().hashString(content, defaultCharset()).toString();
    } catch (ServerException | ForbiddenException e) {
        LOG.error("Error trying to read {} file and broadcast it", path, e);
    }
    return null;
}

From source file:de.cinovo.cloudconductor.agent.executors.FileExecutor.java

private HashCode getChecksum(String content) {
    return Hashing.md5().hashBytes(content.getBytes());
}

From source file:com.facebook.buck.core.build.engine.manifest.Manifest.java

/** Hash the files pointed to by the source paths. */
@VisibleForTesting// w  ww  .j  a v  a  2  s .  c o  m
static HashCode hashSourcePathGroup(FileHashCache fileHashCache, SourcePathResolver resolver,
        ImmutableList<SourcePath> paths) throws IOException {
    if (paths.size() == 1) {
        return hashSourcePath(paths.get(0), fileHashCache, resolver);
    }
    Hasher hasher = Hashing.md5().newHasher();
    for (SourcePath path : paths) {
        hasher.putBytes(hashSourcePath(path, fileHashCache, resolver).asBytes());
    }
    return hasher.hash();
}

From source file:co.cask.cdap.internal.app.runtime.service.http.HttpHandlerGenerator.java

ClassDefinition generate(TypeToken<? extends HttpServiceHandler> delegateType, String pathPrefix)
        throws IOException {
    Class<?> rawType = delegateType.getRawType();
    List<Class<?>> preservedClasses = Lists.newArrayList();
    preservedClasses.add(rawType);/*from   w ww .  ja  v  a 2 s. c  om*/

    ClassWriter classWriter = new ClassWriter(ClassWriter.COMPUTE_FRAMES);

    String internalName = Type.getInternalName(rawType);
    String className = internalName + Hashing.md5().hashString(internalName);

    // Generate the class
    Type classType = Type.getObjectType(className);
    classWriter.visit(Opcodes.V1_6, Opcodes.ACC_PUBLIC + Opcodes.ACC_FINAL, className,
            getClassSignature(delegateType), Type.getInternalName(AbstractHttpHandlerDelegator.class), null);

    // Inspect the delegate class hierarchy to generate public handler methods.
    for (TypeToken<?> type : delegateType.getTypes().classes()) {
        if (!Object.class.equals(type.getRawType())) {
            inspectHandler(delegateType, type, pathPrefix, classType, classWriter, preservedClasses);
        }
    }

    generateConstructor(delegateType, classWriter);
    generateLogger(classType, classWriter);

    ClassDefinition classDefinition = new ClassDefinition(classWriter.toByteArray(), className,
            preservedClasses);
    // DEBUG block. Uncomment for debug
    //    co.cask.cdap.internal.asm.Debugs.debugByteCode(classDefinition, new java.io.PrintWriter(System.out));
    // End DEBUG block
    return classDefinition;
}