Package org.apache.pulsar.functions.windowing

Interface WindowLifecycleListener<T>

Type Parameters:

T - The type of Event in the window (e.g. Tuple).

public interface WindowLifecycleListener<T>

A callback for expiry, activation of events tracked by the WindowManager.

Method Summary

Modifier and Type	Method	Description
default void	onActivation(List<T> events, List<T> newEvents, List<T> expired, Long referenceTime)	Called on activation of the window due to the TriggerPolicy.
void	onExpiry(List<T> events)	Called on expiry of events from the window due to EvictionPolicy.

Method Details

onExpiry

void onExpiry(List<T> events)

Called on expiry of events from the window due to EvictionPolicy.

Parameters:

events - the expired events

onActivation

default void onActivation(List<T> events,
 List<T> newEvents,
 List<T> expired,
 Long referenceTime)

Called on activation of the window due to the TriggerPolicy.

Parameters:

events - the list of current events in the window.

newEvents - the newly added events since last activation.

expired - the expired events since last activation.

referenceTime - the reference (event or processing) time that resulted in activation