public static IActionResult Run(
[HttpTrigger(AuthorizationLevel.Function, "get", "post", Route = null)] HttpRequest req,
[Blob("models/model.zip", FileAccess.Read, Connection = "AzureWebJobsStorage")] Stream serializedModel,
ILogger log)
{
// Workaround for Azure Functions Host
/*
* if (typeof(Microsoft.ML.Runtime.Data.LoadTransform) == null ||
* typeof(Microsoft.ML.Runtime.Learners.LinearClassificationTrainer) == null ||
* typeof(Microsoft.ML.Runtime.Internal.CpuMath.SseUtils) == null ||
* typeof(Microsoft.ML.Runtime.FastTree.FastTree) == null)
* {
* log.Error("Error loading ML.NET");
* return new StatusCodeResult(500);
* }
*/
//Read incoming request body
string requestBody = new StreamReader(req.Body).ReadToEnd();
log.LogInformation("C# HTTP trigger function processed a request.");
log.LogInformation(requestBody);
//Bind request body to IrisData object
ModelInput data = JsonConvert.DeserializeObject <ModelInput>(requestBody);
//Load prediction model
var model = PredictionEngine.ReadAsync <ModelInput, ModelOutput>(serializedModel).Result;
//Make prediction
ModelOutput prediction = model.Predict(data);
//Return prediction
return((IActionResult) new OkObjectResult(prediction.Prediction));
}
