public static async System.Threading.Tasks.Task <HttpResponseMessage> RunAsync([HttpTrigger(AuthorizationLevel.Function, "post", Route = null)] HttpRequestMessage req, [DurableClient] IDurableClient starter, ILogger log)
{
var inputToFunction = JToken.ReadFrom(new JsonTextReader(new StreamReader(await req.Content.ReadAsStreamAsync())));
dynamic eventGridSoleItem = (inputToFunction as JArray)?.SingleOrDefault();
if (eventGridSoleItem == null)
{
return(req.CreateResponse(HttpStatusCode.BadRequest, @"Expecting only one item in the Event Grid message"));
}
if (eventGridSoleItem.eventType == @"Microsoft.EventGrid.SubscriptionValidationEvent")
{
log.LogTrace(@"Event Grid Validation event received.");
return(req.CreateCompatibleResponse(HttpStatusCode.OK, $"{{ \"validationResponse\" : \"{((dynamic)inputToFunction)[0].data.validationCode}\" }}"));
}
CustomerBlobAttributes newCustomerFile = Helpers.ParseEventGridPayload(eventGridSoleItem, log);
if (newCustomerFile == null)
{
return(req.CreateResponse(HttpStatusCode.NoContent));
}
string orderId = newCustomerFile.OrderId, transactionType = newCustomerFile.TransactionType, containerName = newCustomerFile.ContainerName;
log.LogInformation($@"Processing new file. orderid: {orderId}, transactionType: {transactionType}");
// get the prefix for the name so we can check for the matching payment in the same container with in the blob storage account
var prefix = newCustomerFile.OrderId;
await starter.SignalEntityAsync <IBatchEntity>(prefix, b => b.NewFile(newCustomerFile.FullUrl));
return(req.CreateResponse(HttpStatusCode.Accepted));
}
public async Task NewFile(string fileUri)
{
var newCustomerFile = CustomerBlobAttributes.Parse(fileUri);
_logger.LogInformation($@"Got new file via event: {newCustomerFile.TransactionType}");
if (newCustomerFile.TransactionType == "order")
{
this.IsPaymentReceived = true;
}
else if (newCustomerFile.TransactionType == "payment")
{
this.IsOrderReceived = true;
}
_logger.LogTrace($@"Actor '{_id}' got file '{newCustomerFile.TransactionType}'");
if (this.IsOrderReceived && this.IsPaymentReceived)
{
_logger.LogInformation(@"Payment received...");
// call next step in functions with the prefix so it knows what to go grab
await Helpers.CreateShippingLabel(newCustomerFile.OrderId, _logger);
}
else
{
_logger.LogInformation($@"Waiting for Payment.....");
}
}
public static CustomerBlobAttributes ParseEventGridPayload(dynamic eventGridItem, ILogger log)
{
if (eventGridItem.eventType == @"Microsoft.Storage.BlobCreated" &&
eventGridItem.data.api == @"PutBlob" &&
eventGridItem.data.contentType == @"application/vnd.ms-excel")
{
try
{
var retVal = CustomerBlobAttributes.Parse((string)eventGridItem.data.url);
return(retVal);
}
catch (Exception ex)
{
log.LogError(@"Error parsing Event Grid payload", ex);
}
}
return(null);
}