/// <summary>
/// Immediately runs a background task.
/// </summary>
/// <param name="backgroundTask">The task to run.</param>
public void Run(IBackgroundTask backgroundTask)
{
async Task TaskCallback(CancellationToken cancellationToken)
{
try
{
await backgroundTask.Run(cancellationToken);
}
catch
{
// TODO: Log details
}
}
HostingEnvironment.QueueBackgroundWorkItem(TaskCallback);
}
public void Run(IBackgroundTaskInstance taskInstance)
{
// Get a deferral so that the service isn't terminated.
this.backgroundTaskDeferral = taskInstance.GetDeferral();
// Associate a cancellation handler with the background task.
taskInstance.Canceled += OnTaskCanceled;
// Retrieve the app service connection and set up a listener for incoming app service requests.
var details = taskInstance.TriggerDetails as AppServiceTriggerDetails;
appServiceconnection = details.AppServiceConnection;
appServiceconnection.RequestReceived += OnRequestReceived;
task = new StockBackgroundTask();
task.Run(taskInstance);
}
/*
* If each type of background task had only a single instance then it would make sense to use
* background tasks created with IHostedService/BackgroundService in the web host. However, with
* multiple copies of each background task it is easier to just use Task.Run
*/
static async Task RunTaskAfterDelay(IBackgroundTask t)
{
await Task.Delay(500);
await t.Run();
}