public string DoExport()

in Source/NuGetGallery.Operations/Infrastructure/ImportExportHelper.cs [40:148]
98 lines of code
8 McCabe index (conditional complexity)

        public string DoExport(string blobUri, bool whatIf)
        {
            _log.Info("Starting SQL DAC Export Operation");
            string requestGuid = null;
            bool exportComplete = false;
            string exportedBlobPath = null;

            //Setup Web Request for Export Operation
            WebRequest webRequest = WebRequest.Create(this.EndPointUri + @"/Export");
            webRequest.Method = WebRequestMethods.Http.Post;
            webRequest.ContentType = @"application/xml";

            //Create Web Request Inputs - Blob Storage Credentials and Server Connection Info
            ExportInput exportInputs = new ExportInput
            {
                BlobCredentials = new BlobStorageAccessKeyCredentials
                {
                    StorageAccessKey = this.StorageKey,
                    Uri = String.Format(blobUri, this.DatabaseName, DateTime.UtcNow.Ticks.ToString())
                },
                ConnectionInfo = new ConnectionInfo
                {
                    ServerName = this.ServerName,
                    DatabaseName = this.DatabaseName,
                    UserName = this.UserName,
                    Password = this.Password
                }
            };

            //Perform Web Request
            DataContractSerializer dataContractSerializer = new DataContractSerializer(exportInputs.GetType());
            _log.Info("http POST {0}", webRequest.RequestUri.AbsoluteUri);
            if (whatIf)
            {
                _log.Trace("Would have sent:");

                using (var strm = new MemoryStream())
                {
                    dataContractSerializer.WriteObject(strm, exportInputs);
                    strm.Flush();
                    strm.Seek(0, SeekOrigin.Begin);
                    using (var reader = new StreamReader(strm))
                    {
                        _log.Trace(reader.ReadToEnd());
                    }
                }
                return null;
            }
            else
            {
                _log.Info("Making Web Request For Export Operation...");
                Stream webRequestStream = webRequest.GetRequestStream();
                dataContractSerializer.WriteObject(webRequestStream, exportInputs);
                webRequestStream.Close();

                //Get Response and Extract Request Identifier
                WebResponse webResponse = null;
                XmlReader xmlStreamReader = null;

                try
                {
                    //Initialize the WebResponse to the response from the WebRequest
                    webResponse = webRequest.GetResponse();

                    xmlStreamReader = XmlReader.Create(webResponse.GetResponseStream());
                    xmlStreamReader.ReadToFollowing("guid");
                    requestGuid = xmlStreamReader.ReadElementContentAsString();
                    _log.Info(String.Format("Export Request '{0}' submitted", requestGuid));

                    //Get Export Operation Status
                    string last = null;
                    while (!exportComplete)
                    {
                        List<StatusInfo> statusInfoList = CheckRequestStatus(requestGuid);
                        var status = statusInfoList.FirstOrDefault().Status;
                        if (!String.Equals(last, status, StringComparison.OrdinalIgnoreCase))
                        {
                            _log.Info(status);
                        }
                        last = status;

                        if (statusInfoList.FirstOrDefault().Status == "Failed")
                        {
                            _log.Error("Database export failed: {0}", statusInfoList.FirstOrDefault().ErrorMessage);
                            exportComplete = true;
                        }

                        if (statusInfoList.FirstOrDefault().Status == "Completed")
                        {
                            exportedBlobPath = statusInfoList.FirstOrDefault().BlobUri;
                            _log.Info("Export Complete - Database exported to: {0}", exportedBlobPath);
                            exportComplete = true;
                        }
                        Thread.Sleep(5 * 1000);
                    }
                    return exportedBlobPath;
                }
                catch (WebException responseException)
                {
                    _log.Error("Request Falied:{0}", responseException.Message);
                    if (responseException.Response != null)
                    {
                        _log.Error("Status Code: {0}", ((HttpWebResponse)responseException.Response).StatusCode);
                        _log.Error("Status Description: {0}", ((HttpWebResponse)responseException.Response).StatusDescription);
                    }
                    return null;
                }
            }
        }