private async Task SetErrorStatus(TActor actor, TStatus newStatus, string message, Exception ex)
{
// This method should not throw, see ProcessTranstions for the usage pattern
try
{
Logger.LogError(ex, "{0} - process error: {message}.", actor, message);
var e = new StateMachineStatusChangingArgs <TActor, TStatus>(actor, newStatus, message);
await OnStatusChanging(e);
actor.Status = newStatus;
}
catch (Exception exception)
{
Logger.LogError(exception, "{actor} - Unexpected error while setting error status: {message}.");
actor.Status = newStatus; // Assume the proposed error status even in case of a failure
}
}
protected async Task <TStatus> ChangeStatus(TActor actor, TStatus newStatus, string message = null)
{
if (actor.Status.Equals(newStatus))
{
return(newStatus);
}
try
{
var e = new StateMachineStatusChangingArgs <TActor, TStatus>(actor, newStatus, message);
await OnStatusChanging(e);
actor.Status = e.NewStatus;
}
catch (Exception ex)
{
Logger.LogError(ex, "{actor}: Status change failed ({statusFrom} -> {statusTo}).", actor, actor.Status, newStatus);
throw new StateMachineException("Status change failed.", ex);
}
return(actor.Status);
}
protected virtual Task OnStatusChanging(StateMachineStatusChangingArgs <TActor, TStatus> e)
{
return(Task.CompletedTask);
}
protected override async Task OnStatusChanging(StateMachineStatusChangingArgs <ScheduleVisitActor, ScheduleVisitStatus> e)
{
await ScheduleService.ChangeStatus(e.Actor.RequestId, e.CurrentStatus.GetId(), e.NewStatus.GetId(), e.Message);
}
