Class ChecksumProvider

java.lang.Object
software.amazon.awssdk.checksums.internal.ChecksumProvider
@SdkInternalApi public final class ChecksumProvider extends Object
Utility class providing implementations of checksums.

Supports the following implementations for CRC32C:

  • Java-based CRC32C (Java 9+)
  • CRT-based CRC32C (using AWS CRT library)
  • SDK-based CRC32C (fallback)

Supports CRT-based implementations for CRC64NVME and XXHASH algorithms (using AWS CRT library).

For internal use only (SdkInternalApi).

  • Method Details

    • crc32cImplementation

      public static SdkChecksum crc32cImplementation()
      Tries to create a Java 9-based CRC32C checksum. If it's not available, it tries to create a CRT-based checksum. If both are not available, it falls back to an SDK-based CRC32C checksum.
      Returns:
      An instance of SdkChecksum, based on the first available option.

    • xxHash64CrtImplementation

      public static SdkChecksum xxHash64CrtImplementation()
      Creates an instance of the CRT-based XXHASH64 checksum using AWS's CRT library.
      Returns:
      An SdkChecksum instance for XXHASH64.
      Throws:
      RuntimeException - if the CRT implementation is not available.

    • xxHash3CrtImplementation

      public static SdkChecksum xxHash3CrtImplementation()
      Creates an instance of the CRT-based XXHASH3 checksum using AWS's CRT library.
      Returns:
      An SdkChecksum instance for XXHASH3.
      Throws:
      RuntimeException - if the CRT implementation is not available.

    • xxHash128CrtImplementation

      public static SdkChecksum xxHash128CrtImplementation()
      Creates an instance of the CRT-based XXHASH128 checksum using AWS's CRT library.
      Returns:
      An SdkChecksum instance for XXHASH128.
      Throws:
      RuntimeException - if the CRT implementation is not available.