List of usage examples for com.google.common.hash Hasher hash
@CheckReturnValue HashCode hash();
From source file:teetime.stage.MD5Stage.java
@Override protected void execute(final String element) { Hasher hasher = Hashing.md5().newHasher(); hasher.putString(element, charset);//from w w w. j av a 2 s .c om outputPort.send(hasher.hash().toString()); }
From source file:org.gradle.api.internal.hash.DefaultFileHasher.java
@Override public HashCode hash(File file) { try {/* w w w .j a v a 2s .co m*/ Hasher hasher = createFileHasher(); Files.copy(file, Funnels.asOutputStream(hasher)); return hasher.hash(); } catch (IOException e) { throw new UncheckedIOException(String.format("Failed to create MD5 hash for file '%s'.", file), e); } }
From source file:documents.Document.java
public int hashCode() { Hasher hf = Hashing.md5().newHasher(); metadata.forEach((k, v) -> hf.putString(v, Charset.defaultCharset())); return hf.hash().asInt(); }
From source file:com.dssmp.agent.tailing.KinesisRecord.java
@VisibleForTesting
String generatePartitionKey(PartitionKeyOption option) {
Preconditions.checkNotNull(option);/*from w w w. j a va2 s. c o m*/
if (option == PartitionKeyOption.DETERMINISTIC) {
Hasher hasher = Hashing.md5().newHasher();
hasher.putBytes(data.array());
return hasher.hash().toString();
}
if (option == PartitionKeyOption.RANDOM)
return "" + ThreadLocalRandom.current().nextDouble(1000000);
return null;
}
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 *//* www .java2 s . c om*/ 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); }
From source file:org.apache.kylin.cube.util.CubingUtils.java
public static Map<Long, HLLCounter> sampling(CubeDesc cubeDesc, IJoinedFlatTableDesc flatDescIn, Iterable<List<String>> streams) { final CubeJoinedFlatTableEnrich flatDesc = new CubeJoinedFlatTableEnrich(flatDescIn, cubeDesc); final int rowkeyLength = cubeDesc.getRowkey().getRowKeyColumns().length; final List<Long> allCuboidIds = new CuboidScheduler(cubeDesc).getAllCuboidIds(); final long baseCuboidId = Cuboid.getBaseCuboidId(cubeDesc); final Map<Long, Integer[]> allCuboidsBitSet = Maps.newHashMap(); Lists.transform(allCuboidIds, new Function<Long, Integer[]>() { @Nullable/*from w w w . j a va2s . c o m*/ @Override public Integer[] apply(@Nullable Long cuboidId) { Integer[] result = new Integer[Long.bitCount(cuboidId)]; long mask = Long.highestOneBit(baseCuboidId); int position = 0; for (int i = 0; i < rowkeyLength; i++) { if ((mask & cuboidId) > 0) { result[position] = i; position++; } mask = mask >> 1; } return result; } }); final Map<Long, HLLCounter> result = Maps.newHashMapWithExpectedSize(allCuboidIds.size()); for (Long cuboidId : allCuboidIds) { result.put(cuboidId, new HLLCounter(cubeDesc.getConfig().getCubeStatsHLLPrecision())); Integer[] cuboidBitSet = new Integer[Long.bitCount(cuboidId)]; long mask = Long.highestOneBit(baseCuboidId); int position = 0; for (int i = 0; i < rowkeyLength; i++) { if ((mask & cuboidId) > 0) { cuboidBitSet[position] = i; position++; } mask = mask >> 1; } allCuboidsBitSet.put(cuboidId, cuboidBitSet); } HashFunction hf = Hashing.murmur3_32(); ByteArray[] row_hashcodes = new ByteArray[rowkeyLength]; for (int i = 0; i < rowkeyLength; i++) { row_hashcodes[i] = new ByteArray(); } for (List<String> row : streams) { //generate hash for each row key column for (int i = 0; i < rowkeyLength; i++) { Hasher hc = hf.newHasher(); final String cell = row.get(flatDesc.getRowKeyColumnIndexes()[i]); if (cell != null) { row_hashcodes[i].set(hc.putString(cell).hash().asBytes()); } else { row_hashcodes[i].set(hc.putInt(0).hash().asBytes()); } } for (Map.Entry<Long, HLLCounter> longHyperLogLogPlusCounterNewEntry : result.entrySet()) { Long cuboidId = longHyperLogLogPlusCounterNewEntry.getKey(); HLLCounter counter = longHyperLogLogPlusCounterNewEntry.getValue(); Hasher hc = hf.newHasher(); final Integer[] cuboidBitSet = allCuboidsBitSet.get(cuboidId); for (int position = 0; position < cuboidBitSet.length; position++) { hc.putBytes(row_hashcodes[cuboidBitSet[position]].array()); } counter.add(hc.hash().asBytes()); } } return result; }
From source file:com.underthehood.weblogs.utils.TimeuuidGenerator.java
/** * Using MAC address, process id, and some env props * @param addr//from ww w . ja v a 2s. c o m * @return */ private static long makeNode(InetAddress addr) { byte[] mac = null; if (addr != null) { try { mac = NetworkInterface.getByInetAddress(addr).getHardwareAddress(); } catch (SocketException e) { } } if (mac == null) { try { mac = NetworkInterface.getByInetAddress(getActualIPv4HostAddress()).getHardwareAddress(); Hasher hash = Hashing.md5().newHasher(); hash.putBytes(mac); String procId = ManagementFactory.getRuntimeMXBean().getName().split("@")[0]; hash.putBytes(procId.getBytes(StandardCharsets.UTF_8)); Properties props = System.getProperties(); hash.putBytes(props.getProperty("os.arch").getBytes(StandardCharsets.UTF_8)); hash.putBytes(props.getProperty("os.name").getBytes(StandardCharsets.UTF_8)); hash.putBytes(props.getProperty("os.version").getBytes(StandardCharsets.UTF_8)); hash.putBytes(props.getProperty("java.vendor").getBytes(StandardCharsets.UTF_8)); hash.putBytes(props.getProperty("java.version").getBytes(StandardCharsets.UTF_8)); return hash.hash().asLong(); } catch (SocketException e) { log.warn("Unable to get a valid network interface!"); log.debug("", e); } } return UUID.randomUUID().getLeastSignificantBits(); }
From source file:io.github.maxymania.powercache.proxy.MethodCall.java
@Override public int hashCode() { //int hash = 7; //hash = 79 * hash + Objects.hashCode(this.name); //hash = 79 * hash + Arrays.deepHashCode(this.data); //return hash; Hasher h = Hashing.adler32().newHasher(); h.putString(name, Util.UTF);/*from ww w . j a va 2 s . co m*/ h.putObject(data, Util.funnel); return h.hash().asInt(); }
From source file:org.apache.metron.hbase.converters.threatintel.ThreatIntelKey.java
@Override public byte[] toBytes() { byte[] indicatorBytes = Bytes.toBytes(indicator); Hasher hasher = hFunction.get().newHasher(); hasher.putBytes(Bytes.toBytes(indicator)); byte[] prefix = hasher.hash().asBytes(); byte[] val = new byte[indicatorBytes.length + prefix.length]; int pos = 0;/* w w w .j ava 2 s . c o m*/ for (int i = 0; pos < prefix.length; ++pos, ++i) { val[pos] = prefix[i]; } for (int i = 0; i < indicatorBytes.length; ++pos, ++i) { val[pos] = indicatorBytes[i]; } return val; }
From source file:com.google.api.control.aggregator.CheckRequestAggregator.java
/** * Obtains the {@code HashCode} for the contents of {@code value}. * * @param value a {@code CheckRequest} to be signed * @return the {@code HashCode} corresponding to {@code value} *//*from www.j a v a 2 s . c o m*/ public static HashCode sign(CheckRequest value) { Hasher h = Hashing.md5().newHasher(); Operation o = value.getOperation(); if (o == null || Strings.isNullOrEmpty(o.getConsumerId()) || Strings.isNullOrEmpty(o.getOperationName())) { throw new IllegalArgumentException("CheckRequest should have a valid operation"); } h.putString(o.getConsumerId(), StandardCharsets.UTF_8); h.putChar('\0'); h.putString(o.getOperationName(), StandardCharsets.UTF_8); h.putChar('\0'); Signing.putLabels(h, o.getLabels()); for (MetricValueSet mvSet : o.getMetricValueSetsList()) { h.putString(mvSet.getMetricName(), StandardCharsets.UTF_8); h.putChar('\0'); for (MetricValue metricValue : mvSet.getMetricValuesList()) { MetricValues.putMetricValue(h, metricValue); } } return h.hash(); }