com.google.common.hash.HashCode类的使用及代码示例

x33g5p2x  于2022-01-19 转载在 其他  
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本文整理了Java中com.google.common.hash.HashCode类的一些代码示例，展示了HashCode类的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。HashCode类的具体详情如下：
包路径：com.google.common.hash.HashCode
类名称：HashCode

HashCode介绍

[英]An immutable hash code of arbitrary bit length.
[中]任意位长度的不可变哈希码。

代码示例

代码示例来源：origin: google/guava

public void testRoundTripHashCodeUsingBaseEncoding() {
 HashCode hash1 = Hashing.sha1().hashString("foo", Charsets.US_ASCII);
 HashCode hash2 = HashCode.fromBytes(BaseEncoding.base16().lowerCase().decode(hash1.toString()));
 assertEquals(hash1, hash2);
}

代码示例来源：origin: jooby-project/jooby

private String sha1(final File dir, final File sprite, final File css) throws IOException {
 try (Stream<Path> stream = Files.walk(dir.toPath())) {
  Hasher sha1 = Hashing.sha1().newHasher();
  stream.filter(p -> !Files.isDirectory(p))
    .forEach(p -> Try.run(() -> sha1.putBytes(Files.readAllBytes(p))));
  if (sprite.exists()) {
   sha1.putBytes(Files.readAllBytes(sprite.toPath()));
  }
  if (css.exists()) {
   sha1.putBytes(Files.readAllBytes(css.toPath()));
  }
  return BaseEncoding.base16().encode(sha1.hash().asBytes()).toLowerCase();
 }
}

代码示例来源：origin: google/guava

public void testGetBytesInternal_noCloneOccurs() {
 byte[] bytes = new byte[] {(byte) 0xcd, (byte) 0xab, (byte) 0x00, (byte) 0x00};
 HashCode hashCode = HashCode.fromBytes(bytes);
 assertEquals(0x0000abcd, hashCode.asInt());
 assertEquals("cdab0000", hashCode.toString());
 hashCode.getBytesInternal()[0] = (byte) 0x00;
 assertEquals(0x0000ab00, hashCode.asInt());
 assertEquals("00ab0000", hashCode.toString());
}

代码示例来源：origin: google/guava

/**
 * Returns a "Java hash code" for this {@code HashCode} instance; this is well-defined (so, for
 * example, you can safely put {@code HashCode} instances into a {@code HashSet}) but is otherwise
 * probably not what you want to use.
 */
@Override
public final int hashCode() {
 // If we have at least 4 bytes (32 bits), just take the first 4 bytes. Since this is
 // already a (presumably) high-quality hash code, any four bytes of it will do.
 if (bits() >= 32) {
  return asInt();
 }
 // If we have less than 4 bytes, use them all.
 byte[] bytes = getBytesInternal();
 int val = (bytes[0] & 0xFF);
 for (int i = 1; i < bytes.length; i++) {
  val |= ((bytes[i] & 0xFF) << (i * 8));
 }
 return val;
}

代码示例来源：origin: google/guava

public void testLongWriteBytesTo() {
 byte[] dest = new byte[8];
 HashCode.fromLong(42).writeBytesTo(dest, 0, 8);
 assertTrue(Arrays.equals(HashCode.fromLong(42).asBytes(), dest));
}

代码示例来源：origin: google/guava

public void testIntWriteBytesTo() {
 byte[] dest = new byte[4];
 HashCode.fromInt(42).writeBytesTo(dest, 0, 4);
 assertTrue(Arrays.equals(HashCode.fromInt(42).asBytes(), dest));
}

代码示例来源：origin: jclouds/legacy-jclouds

public Void call() throws Exception {
   HttpWire wire = setUp();
   InputStream in = wire.input(fromServer);
   ByteArrayOutputStream out = new ByteArrayOutputStream();// TODO
   copy(in, out);
   byte[] compare = md5().hashBytes(out.toByteArray()).asBytes();
   Thread.sleep(100);
   assertEquals(base16().lowerCase().encode(compare), checkNotNull(sysHttpStreamMd5, sysHttpStreamMd5));
   assertEquals(((BufferLogger) wire.getWireLog()).buff.toString().getBytes().length, 3331484);
   return null;
 }
}

代码示例来源：origin: io.airlift/slice

@Test(invocationCount = 100)
public void testLessThan16Bytes()
    throws Exception
{
  byte[] data = randomBytes(ThreadLocalRandom.current().nextInt(16));
  HashCode expected = Hashing.murmur3_128().hashBytes(data);
  Slice actual = Murmur3Hash128.hash(Slices.wrappedBuffer(data));
  assertEquals(actual.getBytes(), expected.asBytes());
}

代码示例来源：origin: jclouds/legacy-jclouds

private void checkLoginAsTheNewUser(String expectedUsername) {
   LoginResponse response = globalAdminClient.getSessionClient().loginUserInDomainWithHashOfPassword(
      expectedUsername, "", base16().lowerCase().encode(md5().hashString("password", UTF_8).asBytes()));

   assertNotNull(response);
   assertNotNull(response.getSessionKey());
   assertNotNull(response.getJSessionId());

   client.getSessionClient().logoutUser(response.getSessionKey());
  }
}

代码示例来源：origin: googleapis/google-cloud-java

private static void setEncryptionHeaders(
  HttpHeaders headers, String headerPrefix, Map<Option, ?> options) {
 String key = Option.CUSTOMER_SUPPLIED_KEY.getString(options);
 if (key != null) {
  BaseEncoding base64 = BaseEncoding.base64();
  HashFunction hashFunction = Hashing.sha256();
  headers.set(headerPrefix + "algorithm", "AES256");
  headers.set(headerPrefix + "key", key);
  headers.set(
    headerPrefix + "key-sha256",
    base64.encode(hashFunction.hashBytes(base64.decode(key)).asBytes()));
 }
}

代码示例来源：origin: apache/incubator-druid

final String newCommitMetadataSha1 = BaseEncoding.base16().encode(
  Hashing.sha1().hashBytes(newCommitMetadataBytes).asBytes()
);

代码示例来源：origin: jclouds/legacy-jclouds

private void assertValidMd5(final InputStream input) throws IOException {
 assertEquals(base64().encode(new ByteSource() {
   @Override
   public InputStream openStream() {
    return input;
   }
 }.hash(md5()).asBytes()), md5);
}

代码示例来源：origin: airlift/slice

@Test(invocationCount = 100)
public void testLessThan4Bytes()
    throws Exception
{
  byte[] data = randomBytes(ThreadLocalRandom.current().nextInt(4));
  int expected = Hashing.murmur3_32().hashBytes(data).asInt();
  int actual = Murmur3Hash32.hash(Slices.wrappedBuffer(data));
  assertEquals(actual, expected);
}

代码示例来源：origin: prestodb/presto

@Test
public void testZoneKeyData()
{
  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 this more difficult
  assertEquals(hasher.hash().asLong(), -4582158485614614451L, "zone-index.properties file contents changed!");
}

代码示例来源：origin: runelite/runelite

@Override
public void run()
{
  byte[] hash = Hashing.sha256().hashBytes(data).asBytes();
  String hashStr = BaseEncoding.base16().encode(hash);
  archive.setHash(hash);
  String path = new StringBuilder()
    .append(hashStr.substring(0, 2))
    .append('/')
    .append(hashStr.substring(2))
    .toString();
  try
  {
    try (InputStream in = minioClient.getObject(minioBucket, path))
    {
      return; // already exists
    }
    catch (ErrorResponseException ex)
    {
      // doesn't exist
    }
    minioClient.putObject(minioBucket, path, new ByteArrayInputStream(data), data.length, "binary/octet-stream");
  }
  catch (ErrorResponseException | InsufficientDataException | InternalException | InvalidArgumentException | InvalidBucketNameException | NoResponseException | IOException | InvalidKeyException | NoSuchAlgorithmException | XmlPullParserException ex)
  {
    logger.warn("unable to upload data to store", ex);
  }
}

代码示例来源：origin: googleapis/google-cloud-java

@Override
public Blob create(BlobInfo blobInfo, byte[] content, BlobTargetOption... options) {
 content = firstNonNull(content, EMPTY_BYTE_ARRAY);
 BlobInfo updatedInfo =
   blobInfo
     .toBuilder()
     .setMd5(BaseEncoding.base64().encode(Hashing.md5().hashBytes(content).asBytes()))
     .setCrc32c(
       BaseEncoding.base64()
         .encode(Ints.toByteArray(Hashing.crc32c().hashBytes(content).asInt())))
     .build();
 return internalCreate(updatedInfo, content, options);
}

代码示例来源：origin: jclouds/legacy-jclouds

@Test
public void testMD5PayloadEnclosing() throws IOException {
 Payload payload = Payloads.newPayload("foo");
 HttpMessage payloadEnclosing = HttpMessage.builder().payload(payload).build();
 assertEquals(fn.apply(payloadEnclosing), md5().hashString("foo", UTF_8).asBytes());
}

代码示例来源：origin: jooby-project/jooby

private String sha1(final CharSequence source) {
 return BaseEncoding.base16()
   .encode(Hashing
     .sha1()
     .hashString(source, charset)
     .asBytes())
   .substring(0, 8).toLowerCase();
}

代码示例来源：origin: apache/jclouds

@Test(dependsOnMethods = "uploadMultipartBlob", singleThreaded = true)
public void downloadParallelBlob() throws IOException {
 final File downloadedFile = new File(bigFile + ".downloaded");
 blobStore.downloadBlob(CONTAINER, bigFile.getName(), downloadedFile, executor);
 String eTag = Files.hash(downloadedFile, Hashing.md5()).toString();
 assertEquals(eTag, etag);
}

代码示例来源：origin: google/guava

public void testPutAfterHash() {
 Hasher sha1 = Hashing.sha1().newHasher();
 assertEquals(
   "2fd4e1c67a2d28fced849ee1bb76e7391b93eb12",
   sha1.putString("The quick brown fox jumps over the lazy dog", Charsets.UTF_8)
     .hash()
     .toString());
 try {
  sha1.putInt(42);
  fail();
 } catch (IllegalStateException expected) {
 }
}

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