Examples with Checksum java.util.zip.Checksum used on opensource projects

Example 66 with Checksum

use of java.util.zip.Checksum in project ballerina by ballerina-lang.

the class GetCRC32 method execute.

@Override
public void execute(Context context) {
    BValue entityBody = context.getRefArgument(0);
    Checksum checksum = new CRC32();
    byte[] bytes;
    long checksumVal;
    BType argType = entityBody.getType();
    if (argType == BTypes.typeJSON || argType == BTypes.typeXML || argType == BTypes.typeString) {
        // TODO: Look at the possibility of making the encoding configurable
        bytes = entityBody.stringValue().getBytes(StandardCharsets.UTF_8);
    } else if (argType == BTypes.typeBlob) {
        bytes = ((BBlob) entityBody).blobValue();
    } else {
        throw new BallerinaException("failed to generate hash: unsupported data type: " + entityBody.getType().getName());
    }
    checksum.update(bytes, 0, bytes.length);
    checksumVal = checksum.getValue();
    context.setReturnValues(new BString(Long.toHexString(checksumVal)));
}

Example 67 with Checksum

use of java.util.zip.Checksum in project apache-kafka-on-k8s by banzaicloud.

the class Crc32C method compute.

/**
 * Compute the CRC32C (Castagnoli) of a byte buffer from a given offset (relative to the buffer's current position)
 *
 * @param buffer The buffer with the underlying data
 * @param offset The offset relative to the current position
 * @param size The number of bytes beginning from the offset to include
 * @return The CRC32C
 */
public static long compute(ByteBuffer buffer, int offset, int size) {
    Checksum crc = create();
    Checksums.update(crc, buffer, offset, size);
    return crc.getValue();
}

Example 68 with Checksum

use of java.util.zip.Checksum in project apache-kafka-on-k8s by banzaicloud.

the class ChecksumsTest method doTestUpdateByteBuffer.

private void doTestUpdateByteBuffer(byte[] bytes, ByteBuffer buffer) {
    buffer.put(bytes);
    buffer.flip();
    Checksum bufferCrc = new Crc32();
    Checksums.update(bufferCrc, buffer, buffer.remaining());
    assertEquals(Crc32.crc32(bytes), bufferCrc.getValue());
    assertEquals(0, buffer.position());
}

Example 69 with Checksum

use of java.util.zip.Checksum in project apache-kafka-on-k8s by banzaicloud.

the class ChecksumsTest method testUpdateInt.

@Test
public void testUpdateInt() {
    final int value = 1000;
    final ByteBuffer buffer = ByteBuffer.allocate(4);
    buffer.putInt(value);
    Checksum crc1 = Crc32C.create();
    Checksum crc2 = Crc32C.create();
    Checksums.updateInt(crc1, value);
    crc2.update(buffer.array(), buffer.arrayOffset(), 4);
    assertEquals("Crc values should be the same", crc1.getValue(), crc2.getValue());
}

Example 70 with Checksum

use of java.util.zip.Checksum in project apache-kafka-on-k8s by banzaicloud.

the class Crc32CTest method testUpdate.

@Test
public void testUpdate() {
    final byte[] bytes = "Any String you want".getBytes();
    final int len = bytes.length;
    Checksum crc1 = Crc32C.create();
    Checksum crc2 = Crc32C.create();
    Checksum crc3 = Crc32C.create();
    crc1.update(bytes, 0, len);
    for (int i = 0; i < len; i++) crc2.update(bytes[i]);
    crc3.update(bytes, 0, len / 2);
    crc3.update(bytes, len / 2, len - len / 2);
    assertEquals("Crc values should be the same", crc1.getValue(), crc2.getValue());
    assertEquals("Crc values should be the same", crc1.getValue(), crc3.getValue());
}