protected override void UpdateMultipartUploadEncryptionContext()

in src/Internal/SetupDecryptionHandlerV2.cs [123:150]

23 lines of code
6 McCabe index (conditional complexity)


        protected override void UpdateMultipartUploadEncryptionContext(UploadPartRequest uploadPartRequest)
        {
            string uploadID = uploadPartRequest.UploadId;
            UploadPartEncryptionContext encryptedUploadedContext = null;

            if (!EncryptionClient.CurrentMultiPartUploadKeys.TryGetValue(uploadID, out encryptedUploadedContext))
                throw new AmazonS3Exception("Encryption context for multipart upload not found");

            if (!uploadPartRequest.IsLastPart)
            {
                object stream = null;

                if (!((IAmazonWebServiceRequest) uploadPartRequest).RequestState.TryGetValue(Constants.S3CryptoStreamRequestState, out stream))
                    throw new AmazonS3Exception("Cannot retrieve S3 crypto stream from request state, hence cannot get Initialization vector for next uploadPart ");

                var encryptionStream = stream as AESEncryptionUploadPartStream;
                if (encryptionStream != null)
                {
                    encryptedUploadedContext.NextIV = encryptionStream.InitializationVector;
                }

                var aesGcmEncryptStream = stream as AesGcmEncryptStream;
                if (aesGcmEncryptStream != null)
                {
                    encryptedUploadedContext.CryptoStream = aesGcmEncryptStream;
                }
            }
        }