public bool TryRegister <TBackgroundTask>(IBackgroundTrigger trigger, BackgroundTaskParameters parameters) where TBackgroundTask : class, IBackgroundTask
{
return(TryRegister <TBackgroundTask>(trigger, Enumerable.Empty <IBackgroundCondition>(), parameters));
}
public bool TryRegister <TBackgroundTask>(IBackgroundTrigger trigger, IEnumerable <IBackgroundCondition> conditions, BackgroundTaskParameters parameters) where TBackgroundTask : class, IBackgroundTask
{
if (!IsInitialized)
{
return(false);
}
var name = GetTaskName <TBackgroundTask>();
try
{
#if DEBUG
var registration = BackgroundTaskRegistration.AllTasks.Values.FirstOrDefault(t => t.Name == name);
if (registration != null)
{
Logger.Current.Info($"Unregister background task '{name}'");
registration.Unregister(true);
}
#endif
if (!IsTaskRegistered(name))
{
var entryPoint = GetTaskEntryPoint <TBackgroundTask>();
var builder = CreateTaskBuilder(name, entryPoint, trigger, conditions, parameters);
builder.Register();
Logger.Current.Info($"Register background task '{name}'");
return(true);
}
else
{
Logger.Current.Info($"Background task '{name}' already registered");
return(true);
}
}
catch (Exception e)
{
Logger.Current.Error($"Cannot register background task '{name}'", e);
return(false);
}
}
private BackgroundTaskBuilder CreateTaskBuilder(string name, string entryPoint, IBackgroundTrigger trigger, IEnumerable <IBackgroundCondition> conditions, BackgroundTaskParameters parameters)
{
var builder = new BackgroundTaskBuilder
{
Name = name,
CancelOnConditionLoss = parameters.HasFlag(BackgroundTaskParameters.CancelOnConditionLoss),
IsNetworkRequested = parameters.HasFlag(BackgroundTaskParameters.IsNetworkRequested),
};
if (parameters.HasFlag(BackgroundTaskParameters.IsOutProcess))
{
builder.TaskEntryPoint = entryPoint;
}
builder.SetTrigger(trigger);
foreach (var condition in conditions)
{
builder.AddCondition(condition);
}
return(builder);
}
