protected virtual Task <bool> FireCancellableNodeObserverEventAsync(ISnCancellableEvent snEvent,
NodeObserver nodeObserver, CancellationToken cancel = default)
{
//TODO:<?event: Ensure that this method does not throw any exception (but trace and log).
//snEvent.NodeObserverAction(nodeObserver);
//TODO:event: Not implemented yet
return(Task.FromResult(false));
}
private async Task <bool> CallNodeObserversAsync(ISnCancellableEvent snEvent, List <Type> disabledNodeObservers)
{
if (!IsFeatureEnabled(1))
{
return(false);
}
var tasks = Providers.Instance.NodeObservers
.Where(x => !disabledNodeObservers?.Contains(x.GetType()) ?? true)
.Select(x => FireCancellableNodeObserverEventAsync(snEvent, x))
.ToArray();
await Task.WhenAll(tasks).ConfigureAwait(false);
var canceled = tasks.Any(t => t.Result);
return(canceled);
}
public Task <bool> FireCancellableNodeObserverEventAsync(ISnCancellableEvent snEvent, List <Type> disabledNodeObservers)
{
// Cancellable event is used only the NodeObserver infrastructure
return(CallNodeObserversAsync(snEvent, disabledNodeObservers));
}
public Task <bool> FireCancellableNodeObserverEventAsync(ISnCancellableEvent snEvent, List <Type> disabledNodeObservers)
{
return(Task.FromResult(false));
}
protected override async T.Task <bool> FireCancellableNodeObserverEventAsync(ISnCancellableEvent snEvent, NodeObserver nodeObserver,
CancellationToken cancel = default)
{
using (var op = SnTrace.Test.StartOperation(
$"NodeObserverAction simulation: {nodeObserver.GetType().Name} {snEvent.GetType().Name}"))
{
await T.Task.Delay(10, cancel).ConfigureAwait(false);
op.Successful = true;
}
var result = snEvent.CancellableEventArgs.Cancel;
result |= await base.FireCancellableNodeObserverEventAsync(snEvent, nodeObserver, cancel);
return(result);
}