protected override async Task RunAsync(CancellationToken cancellationToken)
{
Logger.Debug(nameof(this.RunAsync));
try
{
INotificationActor notificationActor = ConnectionFactory.CreateNotificationActor();
await notificationActor.SubscribeAsync(new StockEventsHandler(this.StateManager, ProductsCollectionName));
await base.RunAsync(cancellationToken);
}
catch (Exception ex)
{
Logger.Error(ex, nameof(this.RunAsync));
throw;
}
}
private async Task RunNotificationAsync(object arg)
{
try
{
Dictionary <int, ProductStockTrend> productTrends =
await this.StateManager.GetStateAsync <Dictionary <int, ProductStockTrend> >("ProductStockTrends");
// select only products to be notified of
IEnumerable <KeyValuePair <int, ProductStockTrend> > list = productTrends
.Where(x => x.Value.NotificationCounter > 0);
int count = list.Count();
if (count > 0)
{
Logger.Debug("RunNotificationAsync: notifying on {0} products", count);
INotificationActor notificationActor = ActorProxy.Create <INotificationActor>(new ActorId(0));
await notificationActor.NotifyLowStockProducts(
list.Select(x => x.Value.ToProductPrediction()).ToList()
);
// decrement the counter of notification attempts
foreach (int key in list.Select(x => x.Key))
{
productTrends[key].NotificationCounter--;
}
await this.StateManager.SetStateAsync <Dictionary <int, ProductStockTrend> >("ProductStockTrends", productTrends);
}
}
catch (Exception ex)
{
Logger.Error(ex, nameof(this.RunNotificationAsync));
}
}
