/// <summary>
/// Construct a <see cref="IBatchEventProcessor{TEvent}"/> that will automatically track the progress by updating its sequence when the <see cref="IEventHandler{TEvent}.OnEvent(TEvent,long,bool)"/> method returns.
/// </summary>
/// <param name="exceptionHandler"></param>
/// <param name="dataProvider">to which events are published.</param>
/// <param name="sequenceBarrier">on which it is waiting.</param>
/// <param name="eventHandler">is the delegate to which events are dispatched.</param>
public BatchEventProcessor(
IDataProvider <TEvent> dataProvider,
ISequenceBarrier sequenceBarrier,
IEventHandler <TEvent> eventHandler,
IExceptionHandler <TEvent> exceptionHandler)
{
_exceptionHandler = exceptionHandler;
_dataProvider = dataProvider;
_sequenceBarrier = sequenceBarrier;
_eventHandler = eventHandler;
_sequence = new Sequence();
if (eventHandler is ISequenceReportingEventHandler <TEvent> reporting)
{
reporting?.SetSequenceCallback(_sequence);
}
if (eventHandler is IBatchStartAware batchStartAware)
{
_batchStartAware = batchStartAware;
}
if (eventHandler is ITimeoutHandler timeoutHandler)
{
_timeoutHandler = timeoutHandler;
}
if (eventHandler is ILifecycleAware lifecycleAware)
{
_lifecycleAware = lifecycleAware;
}
}
/// <summary>
/// Construct a <see cref="BatchEventProcessor{T}"/> that will automatically track the progress by updating its sequence when
/// the <see cref="IEventHandler{T}.OnEvent"/> method returns.
/// </summary>
/// <param name="dataProvider">dataProvider to which events are published</param>
/// <param name="sequenceBarrier">SequenceBarrier on which it is waiting.</param>
/// <param name="eventHandler">eventHandler is the delegate to which events are dispatched.</param>
public BatchEventProcessor(IDataProvider <T> dataProvider, ISequenceBarrier sequenceBarrier, IEventHandler <T> eventHandler)
{
_dataProvider = dataProvider;
_sequenceBarrier = sequenceBarrier;
_eventHandler = eventHandler;
if (eventHandler is ISequenceReportingEventHandler <T> sequenceReportingEventHandler)
{
sequenceReportingEventHandler.SetSequenceCallback(_sequence);
}
_batchStartAware = eventHandler as IBatchStartAware;
_timeoutHandler = eventHandler as ITimeoutHandler;
}
public BatchStartAware(object eventHandler)
{
_eventHandler = eventHandler as IBatchStartAware;
}
public DefaultBatchStartAware(IBatchStartAware target)
{
_target = target;
}
