Package software.amazon.encryption.s3.internal

Class ContentMetadataDecodingStrategy

  • public class ContentMetadataDecodingStrategy
extends Object

    • Constructor Detail

      • ContentMetadataDecodingStrategy

        public ContentMetadataDecodingStrategy​(InstructionFileConfig instructionFileConfig)

    • Method Detail

      • loadInstructionFileMetadata

        public Map<String,​String> loadInstructionFileMetadata​(software.amazon.awssdk.services.s3.model.GetObjectRequest request)
        Loads metadata from the instruction file and returns it as a map.
        Parameters:
        request - the original GetObject request
        Returns:
        the metadata map loaded from the instruction file
        Throws:
        S3EncryptionClientException - if the instruction file cannot be loaded or parsed

      • isV1V2InObjectMetadata

        public static boolean isV1V2InObjectMetadata​(Map<String,​String> objectMetadata)
        Determines if V1/V2 format is present in object metadata. All V1/V2 keys must be present in object metadata.

      • isV3InObjectMetadata

        public static boolean isV3InObjectMetadata​(Map<String,​String> objectMetadata)
        Determines if V3 format is present in object metadata. "x-amz-c" and "x-amz-d" and "x-amz-i" keys are always in object metadata, and "x-amz-3" is also in object metadata.

      • isV3InInstructionFile

        public static boolean isV3InInstructionFile​(Map<String,​String> objectMetadata)
        Determines if V3 format uses instruction file. "x-amz-c" and "x-amz-d" and "x-amz-i" are in object metadata, but "x-amz-3" is not present (must be in instruction file).

      • decodeV1V2FromInstructionFile

        public ContentMetadata decodeV1V2FromInstructionFile​(software.amazon.awssdk.services.s3.model.GetObjectRequest request,
                                                     software.amazon.awssdk.services.s3.model.GetObjectResponse response)
        Decodes V1/V2 format from instruction file. No V1/V2 keys in object metadata, all keys are in instruction file.

      • decodeV3FromInstructionFile

        public ContentMetadata decodeV3FromInstructionFile​(software.amazon.awssdk.services.s3.model.GetObjectRequest request,
                                                   software.amazon.awssdk.services.s3.model.GetObjectResponse response)
        Decodes V3 format from instruction file. c/d/i keys are in object metadata, x-amz-3 and other keys are in instruction file.

      • decode

        public ContentMetadata decode​(software.amazon.awssdk.services.s3.model.GetObjectRequest request,
                              software.amazon.awssdk.services.s3.model.GetObjectResponse response)