public async Task <VisualAlertScenarioData> ExportOnnxProject(Project project)
{
// get latest iteration
IList <Iteration> iterations = await trainingApi.GetIterationsAsync(project.Id);
Iteration latestTrainedIteration = iterations.Where(i => i.Status == "Completed").OrderByDescending(i => i.TrainedAt.Value).FirstOrDefault();
// export iteration - get download url
Export exportProject = null;
if (latestTrainedIteration != null && latestTrainedIteration.Exportable)
{
// get project's download Url for the particular platform Windows (ONNX) model
exportProject = await CustomVisionServiceHelper.ExportIteration(trainingApi, project.Id, latestTrainedIteration.Id);
}
if (string.IsNullOrEmpty(exportProject?.DownloadUri))
{
throw new ArgumentNullException("Download Uri");
}
// download onnx model
Guid newModelId = Guid.NewGuid();
StorageFolder onnxProjectDataFolder = await VisualAlertDataLoader.GetOnnxModelStorageFolderAsync();
StorageFile file = await onnxProjectDataFolder.CreateFileAsync($"{newModelId}.onnx", CreationCollisionOption.ReplaceExisting);
bool success = await Util.UnzipModelFileAsync(exportProject.DownloadUri, file);
if (!success)
{
await file.DeleteAsync();
return(null);
}
return(new VisualAlertScenarioData
{
Id = newModelId,
Name = project.Name,
ExportDate = DateTime.UtcNow,
FileName = file.Name,
FilePath = file.Path
});
}
private async Task ExportProject(Platform currentPlatform)
{
CustomVisionProjectType customVisionProjectType = CustomVisionServiceHelper.ObjectDetectionDomainGuidList.Contains(this.CurrentProject.Settings.DomainId)
? CustomVisionProjectType.ObjectDetection : CustomVisionProjectType.Classification;
bool success = false;
try
{
this.shareStatusTextBlock.Text = "Exporting model...";
this.shareStatusPanelDescription.Visibility = Visibility.Collapsed;
this.closeFlyoutBtn.Visibility = Visibility.Visible;
this.projectShareProgressRing.IsActive = true;
// get latest iteration of the project
if (this.LatestTrainedIteration == null)
{
await this.LoadLatestIterationInCurrentProject();
}
if (LatestTrainedIteration != null && LatestTrainedIteration.Exportable)
{
// get project's download Url for the particular platform
// Windows (ONNX) model: export latest version of the ONNX model (1.2)
Export exportProject = await CustomVisionServiceHelper.ExportIteration(trainingApi, this.CurrentProject.Id, LatestTrainedIteration.Id);
success = await ExportOnnxProject(exportProject, customVisionProjectType);
}
}
catch (Exception ex)
{
await Util.GenericApiCallExceptionHandler(ex, "We couldn't export the model at this time.");
}
finally
{
this.projectShareProgressRing.IsActive = false;
this.closeFlyoutBtn.Visibility = Visibility.Collapsed;
this.shareStatusTextBlock.Text = success
? "The project was exported successfully."
: "Something went wrong and we couldn't export the model. Sorry :(";
}
}