protected override void UpdateMultipartUploadEncryptionContext()

in src/Internal/SetupDecryptionHandlerV1.cs [145:166]

• 18 lines of code
• 5 McCabe index (conditional complexity)

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

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

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

                if (!((Amazon.Runtime.Internal.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;
                }
            }
        }