public bool Upgrade(ServiceControlInstance instance, ServiceControlUpgradeOptions options) { if (instance.Version < options.UpgradeInfo.CurrentMinimumVersion) { logger.Error($"Upgrade aborted. An interim upgrade to version {options.UpgradeInfo.RecommendedUpgradeVersion} is required before upgrading to version {ZipInfo.Version}. Download available at https://github.com/Particular/ServiceControl/releases/tag/{options.UpgradeInfo.RecommendedUpgradeVersion}"); return(false); } ZipInfo.ValidateZip(); var checkLicenseResult = CheckLicenseIsValid(); if (!checkLicenseResult.Valid) { logger.Error($"Upgrade aborted - {checkLicenseResult.Message}"); return(false); } instance.ReportCard = new ReportCard(); var restartService = instance.Service.Status == ServiceControllerStatus.Running; if (!instance.TryStopService()) { logger.Error("Service failed to stop or service stop timed out"); return(false); } try { instance.UpgradeTransportSeam(); var backupFile = instance.BackupAppConfig(); try { instance.UpgradeFiles(ZipInfo.FilePath); } finally { instance.RestoreAppConfig(backupFile); } options.ApplyChangesToInstance(instance); instance.SetupInstance(); if (instance.ReportCard.HasErrors) { foreach (var error in instance.ReportCard.Errors) { logger.Error(error); } return(false); } if (restartService && !instance.TryStartService()) { logger.Error("Service failed to start after update - please check configuration for {0}", instance.Name); return(false); } } catch (Exception ex) { logger.Error("Upgrade Failed: {0}", ex.Message); return(false); } return(true); }