public ActionResult Validate()
{
try
{
APIUtil.Authenticate(this.Request);
if (this.metaData == null || lastDownload + TimeSpan.FromMinutes(1) < DateTime.Now)
{
var url = APIUtil.GetSettingsUrl();
this.metaData = ApplicationMetadataUtil.DownloadMetadata <ApplicationClientMetadata>(url);
lastDownload = DateTime.Now;
}
var context = APIUtil.ReadBody(this.Request);
using (var vw = new VowpalWabbit(new VowpalWabbitSettings(metaData.TrainArguments)
{
EnableStringExampleGeneration = true,
EnableStringFloatCompact = true
}))
using (var serializer = new VowpalWabbitJsonSerializer(vw))
using (var example = serializer.ParseAndCreate(context))
{
return(Json(new { VWExample = example.VowpalWabbitString }));
}
}
catch (UnauthorizedAccessException ex)
{
return(new HttpStatusCodeResult(HttpStatusCode.Unauthorized, ex.Message));
}
catch (Exception ex)
{
new TelemetryClient().TrackException(ex);
return(new HttpStatusCodeResult(HttpStatusCode.InternalServerError, ex.ToString()));
}
}
public static DecisionServiceClient <string> AddOrGetExisting(Action <byte[]> modelSuccessNotifier)
{
return(DecisionServiceStaticClient.AddOrGetExisting("single", _ =>
{
var telemetry = new TelemetryClient();
string azureStorageConnectionString = ConfigurationManager.AppSettings[ApplicationMetadataStore.AKConnectionString];
var storageAccount = CloudStorageAccount.Parse(azureStorageConnectionString);
var blobClient = storageAccount.CreateCloudBlobClient();
var settingsBlobContainer = blobClient.GetContainerReference(ApplicationBlobConstants.SettingsContainerName);
var clientSettingsBlob = settingsBlobContainer.GetBlockBlobReference(ApplicationBlobConstants.LatestClientSettingsBlobName);
//var settingsUrl = clientSettingsBlob.StorageUri.PrimaryUri.ToString();
var settingsUrl = APIUtil.GetSettingsUrl();
telemetry.TrackEvent($"DecisionServiceClient created: '{settingsUrl}'");
var config = new DecisionServiceConfiguration(settingsUrl)
{
InteractionUploadConfiguration = new BatchingConfiguration
{
MaxDuration = TimeSpan.FromSeconds(2),
UploadRetryPolicy = BatchUploadRetryPolicy.ExponentialRetry
},
ModelPollSuccessCallback = modelSuccessNotifier,
ModelPollFailureCallback = e => telemetry.TrackException(e, new Dictionary <string, string> {
{ "Pool failure", "model" }
}),
SettingsPollFailureCallback = e => telemetry.TrackException(e, new Dictionary <string, string> {
{ "Pool failure", "settings" }
}),
AzureStorageConnectionString = ConfigurationManager.AppSettings[ApplicationMetadataStore.AKConnectionString]
};
return DecisionService.CreateJson(config);
}));
}