Examples with Hasher com.google.common.hash.Hasher used on opensource projects

Example 16 with Hasher

use of com.google.common.hash.Hasher in project buck by facebook.

the class JsonObjectHashingTest method mapOrderDoesNotChangeHash.

@Test
public void mapOrderDoesNotChangeHash() {
    Map<?, ?> map1 = ImmutableMap.of("firstKey", 24, "secondKey", new Float(13.5));
    Map<?, ?> map2 = ImmutableMap.of("secondKey", new Float(13.5), "firstKey", 24);
    Hasher hasher1 = Hashing.sha1().newHasher();
    Hasher hasher2 = Hashing.sha1().newHasher();
    JsonObjectHashing.hashJsonObject(hasher1, map1);
    JsonObjectHashing.hashJsonObject(hasher2, map2);
    assertEquals(hasher1.hash().toString(), hasher2.hash().toString());
}

Example 17 with Hasher

use of com.google.common.hash.Hasher in project aerosolve by airbnb.

the class Util method getHashCode.

public static HashCode getHashCode(String family, String value) {
    Hasher hasher = Hashing.murmur3_128().newHasher();
    hasher.putBytes(family.getBytes());
    hasher.putBytes(value.getBytes());
    return hasher.hash();
}

Example 18 with Hasher

use of com.google.common.hash.Hasher in project presto by prestodb.

the class TestTimeZoneKey method testZoneKeyData.

@Test
public void testZoneKeyData() throws Exception {
    Hasher hasher = Hashing.murmur3_128().newHasher();
    SortedSet<TimeZoneKey> timeZoneKeysSortedByKey = ImmutableSortedSet.copyOf(new Comparator<TimeZoneKey>() {

        @Override
        public int compare(TimeZoneKey left, TimeZoneKey right) {
            return Short.compare(left.getKey(), right.getKey());
        }
    }, TimeZoneKey.getTimeZoneKeys());
    for (TimeZoneKey timeZoneKey : timeZoneKeysSortedByKey) {
        hasher.putShort(timeZoneKey.getKey());
        hasher.putString(timeZoneKey.getId(), StandardCharsets.UTF_8);
    }
    // Zone file should not (normally) be changed, so let's make is more difficult
    assertEquals(hasher.hash().asLong(), 5498515770239515435L, "zone-index.properties file contents changed!");
}

Example 19 with Hasher

use of com.google.common.hash.Hasher in project torodb by torodb.

the class ObjectIdFactory method createMachineId.

private static int createMachineId() {
    int machineId;
    try {
        Hasher hasher = Hashing.crc32c().newHasher();
        Enumeration<NetworkInterface> nics = NetworkInterface.getNetworkInterfaces();
        boolean atLeastOne = false;
        while (nics.hasMoreElements()) {
            NetworkInterface ni = nics.nextElement();
            if (ni != null) {
                byte[] macAddress = ni.getHardwareAddress();
                if (macAddress != null) {
                    for (byte b : macAddress) {
                        atLeastOne = true;
                        hasher.putByte(b);
                    }
                }
            }
        }
        if (!atLeastOne) {
            LOGGER.warn("Failed to calculate the machine id. A random number is used");
            machineId = new SecureRandom().nextInt();
        } else {
            machineId = hasher.hash().asInt();
        }
    } catch (SocketException ex) {
        LOGGER.warn("Failed to calculate the machine id. A random number is used");
        machineId = new SecureRandom().nextInt();
    }
    return machineId & 0xFFFFFF;
}

Example 20 with Hasher

use of com.google.common.hash.Hasher in project gradle by gradle.

the class DefaultHashingClassLoaderFactory method calculateFilterSpecHash.

private static HashCode calculateFilterSpecHash(FilteringClassLoader.Spec spec) {
    Hasher hasher = Hashing.md5().newHasher();
    addToHash(hasher, spec.getClassNames());
    addToHash(hasher, spec.getPackageNames());
    addToHash(hasher, spec.getPackagePrefixes());
    addToHash(hasher, spec.getResourcePrefixes());
    addToHash(hasher, spec.getResourceNames());
    addToHash(hasher, spec.getDisallowedClassNames());
    addToHash(hasher, spec.getDisallowedPackagePrefixes());
    return hasher.hash();
}