Amazon.Glacier.Transfer.Internal.SinglepartUploadCommand.ExecuteAsync C# (CSharp) Method

        internal override async Task ExecuteAsync()
        {
            FileStream input = File.OpenRead(filePath);

            string checksum = TreeHashGenerator.CalculateTreeHash(input);

            try
            {
                UploadArchiveRequest uploadRequest = new UploadArchiveRequest()
                {
                    AccountId = this.options.AccountId,
                    ArchiveDescription = archiveDescription,
                    VaultName = vaultName,
                    Checksum = checksum,
                    Body = input
                };

                uploadRequest.StreamTransferProgress += this.ProgressCallback;
                ((Amazon.Runtime.Internal.IAmazonWebServiceRequest)uploadRequest).AddBeforeRequestHandler(new ArchiveTransferManager.UserAgentPostFix("SingleUpload").UserAgentRequestEventHandlerSync);

                UploadArchiveResponse uploadArchivResponse =
                    await this.manager.GlacierClient.UploadArchiveAsync(uploadRequest).ConfigureAwait(false);
                string archiveId = uploadArchivResponse.ArchiveId;
                this.UploadResult = new UploadResult(archiveId, checksum);
            }
            finally
            {
                try { input.Dispose(); }
                catch (Exception) { }
            }
        }
    }