Example usage for com.google.common.hash Hasher putInt

Introduction

In this page you can find the example usage for com.google.common.hash Hasher putInt.

Prototype

@Override
    Hasher putInt(int i);

Source Link

Usage

From source file:com.yahoo.yqlplus.api.types.YQLType.java

public void hashTo(Hasher digest) {
    digest.putInt(getCoreType().ordinal());
    annotations.hashTo(digest);
}

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From source file:com.spotify.heroic.metric.Event.java

@Override
public void hash(final Hasher hasher) {
    hasher.putInt(MetricType.EVENT.ordinal());

    for (final String k : KEY_ORDER.sortedCopy(payload.keySet())) {
        hasher.putString(k, Charsets.UTF_8).putString(payload.get(k), Charsets.UTF_8);
    }/*from  www . j  a v a 2  s . c  om*/
}

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From source file:com.spotify.heroic.metric.Spread.java

@Override
public void hash(final Hasher hasher) {
    hasher.putInt(MetricType.SPREAD.ordinal());
    hasher.putLong(timestamp);//from   w w  w. ja  va  2 s  . co  m
    hasher.putLong(count);
    hasher.putDouble(sum);
    hasher.putDouble(sum2);
    hasher.putDouble(min);
    hasher.putDouble(max);
}

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From source file:com.spotify.heroic.metric.MetricGroup.java

@Override
public void hash(final Hasher hasher) {
    hasher.putInt(MetricType.GROUP.ordinal());

    for (final MetricCollection c : groups) {
        for (final Metric m : c.getData()) {
            m.hash(hasher);//  w  w w .ja  v  a  2 s. c o m
        }
    }
}

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From source file:com.facebook.buck.json.JsonObjectHashing.java

/**
 * Given a {@link Hasher} and a parsed BUCK file object, updates the Hasher
 * with the contents of the JSON object.
 *//*from   w  w  w  .  j a  v  a2s.co  m*/
public static void hashJsonObject(Hasher hasher, @Nullable Object obj) {
    if (obj instanceof Map) {
        Map<?, ?> map = (Map<?, ?>) obj;
        ImmutableSortedMap.Builder<String, Optional<Object>> sortedMapBuilder = ImmutableSortedMap
                .naturalOrder();
        for (Map.Entry<?, ?> entry : map.entrySet()) {
            Object key = entry.getKey();
            if (!(key instanceof String)) {
                throw new RuntimeException(String.format(
                        "Keys of JSON maps are expected to be strings. Actual type: %s, contents: %s",
                        key.getClass().getName(), key));
            }
            Object value = entry.getValue();
            if (value != null) {
                sortedMapBuilder.put((String) key, Optional.of(value));
            }
        }
        ImmutableSortedMap<String, Optional<Object>> sortedMap = sortedMapBuilder.build();
        hasher.putInt(HashedObjectType.MAP.ordinal());
        hasher.putInt(sortedMap.size());
        for (Map.Entry<String, Optional<Object>> entry : sortedMap.entrySet()) {
            hashJsonObject(hasher, entry.getKey());
            if (entry.getValue().isPresent()) {
                hashJsonObject(hasher, entry.getValue().get());
            } else {
                hashJsonObject(hasher, null);
            }
        }
    } else if (obj instanceof Collection) {
        Collection<?> collection = (Collection<?>) obj;
        hasher.putInt(HashedObjectType.LIST.ordinal());
        hasher.putInt(collection.size());
        for (Object collectionEntry : collection) {
            hashJsonObject(hasher, collectionEntry);
        }
    } else if (obj instanceof String) {
        hasher.putInt(HashedObjectType.STRING.ordinal());
        byte[] stringBytes = ((String) obj).getBytes(Charsets.UTF_8);
        hasher.putInt(stringBytes.length);
        hasher.putBytes(stringBytes);
    } else if (obj instanceof Boolean) {
        hasher.putInt(HashedObjectType.BOOLEAN.ordinal());
        hasher.putBoolean((boolean) obj);
    } else if (obj instanceof Number) {
        // This is gross, but it mimics the logic originally in RawParser.
        Number number = (Number) obj;
        if (number.longValue() == number.doubleValue()) {
            hasher.putInt(HashedObjectType.LONG.ordinal());
            hasher.putLong(number.longValue());
        } else {
            hasher.putInt(HashedObjectType.DOUBLE.ordinal());
            hasher.putDouble(number.doubleValue());
        }
    } else if (obj instanceof Void || obj == null) {
        hasher.putInt(HashedObjectType.NULL.ordinal());
    } else {
        throw new RuntimeException(String.format("Unsupported object %s (class %s)", obj, obj.getClass()));
    }
}

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From source file:org.opendaylight.openflowplugin.openflow.md.core.session.SwitchConnectionCookieOFImpl.java

/**
 * compute pseudorandom key unique for given seed and {@link #auxiliaryId}
 * @param seed random int but fixed per session
 */// w ww. j a  v a  2 s  . co m
public void init(int seed) {
    if (auxiliaryId <= 0) {
        throw new IllegalStateException("auxiliaryId must be greater than 0");
    }

    HashFunction mm32Hf = Hashing.murmur3_32(seed);
    Hasher hasher = mm32Hf.newHasher(8);
    hasher.putInt(auxiliaryId);
    long hash = 0xFFFFFFFFL & hasher.hash().asInt();
    cookie = (auxiliaryId << 24) | (hash >> 8);
}

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From source file:com.facebook.buck.util.sha1.Sha1HashCode.java

/**
 * Updates the specified {@link Hasher} by putting the 20 bytes of this SHA-1 to it in order.
 * @return The specified {@link Hasher}.
 *///www .j av a  2s  .co  m
public Hasher update(Hasher hasher) {
    hasher.putInt(firstFourBytes);
    hasher.putLong(nextEightBytes);
    hasher.putLong(lastEightBytes);
    return hasher;
}

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From source file:com.google.gerrit.server.change.ChangeResource.java

public void prepareETag(Hasher h, CurrentUser user) {
    h.putInt(JSON_FORMAT_VERSION).putLong(getChange().getLastUpdatedOn().getTime())
            .putInt(getChange().getRowVersion())
            .putInt(user.isIdentifiedUser() ? user.getAccountId().get() : 0);

    if (user.isIdentifiedUser()) {
        for (AccountGroup.UUID uuid : user.getEffectiveGroups().getKnownGroups()) {
            h.putBytes(uuid.get().getBytes(UTF_8));
        }//from  w ww.  jav  a  2  s  . co  m
    }

    byte[] buf = new byte[20];
    ObjectId noteId;
    try {
        noteId = getNotes().loadRevision();
    } catch (OrmException e) {
        noteId = null; // This ETag will be invalidated if it loads next time.
    }
    hashObjectId(h, noteId, buf);
    // TODO(dborowitz): Include more NoteDb and other related refs, e.g. drafts
    // and edits.

    for (ProjectState p : control.getProjectControl().getProjectState().tree()) {
        hashObjectId(h, p.getConfig().getRevision(), buf);
    }
}

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From source file:com.cloudera.oryx.app.classreg.example.Example.java

public Example(Feature target, Feature... features) {
    Preconditions.checkArgument(features != null);
    this.features = features;
    this.target = target;
    Hasher hasher = HASH.newHasher();
    for (Feature feature : features) {
        if (feature != null) {
            hasher.putInt(feature.hashCode());
        }//from   w w w  . j  a v a  2 s .  c o m
    }
    if (target != null) {
        hasher.putInt(target.hashCode());
    }
    cachedHashCode = hasher.hashCode();
}

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From source file:mx.itam.metodos.lshclustering.MinhashEmitMapper.java

@Override
public void map(Text id, IntArrayWritable values, Context context) throws IOException, InterruptedException {
    for (int i = 0; i < functionsCount; i++) {
        hashValues[i] = Integer.MAX_VALUE;
    }//w  w  w .ja v  a  2  s .c  o  m
    for (int i = 0; i < functionsCount; i++) {
        HashFunction hf = functions[i];
        for (Writable wr : values.get()) {
            IntWritable value = (IntWritable) wr;
            int hash = hf.hashInt(value.get()).asInt();
            if (hash < hashValues[i]) {
                hashValues[i] = hash;
            }
        }
    }
    Text sketch = new Text();
    Hasher hasher = lsh.newHasher();
    int band = 0;
    for (int i = 0; i < functionsCount; i++) {
        hasher.putInt(hashValues[i]);
        if (i > 0 && (i % rows) == 0) {
            sketch.set(band + "-" + hasher.hash().toString());
            context.write(new SecondarySortKey(sketch, id), id);
            hasher = lsh.newHasher();
            band++;
        }
    }
    sketch.set(band + "-" + hasher.hash().toString());
    context.write(new SecondarySortKey(sketch, id), id);
}

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