dimas-b commented on code in PR #4648:
URL: https://github.com/apache/polaris/pull/4648#discussion_r3383004503
##########
runtime/service/src/main/java/org/apache/polaris/service/events/PolarisEventListeners.java:
##########
@@ -116,4 +143,43 @@ private void deliverEvent(
public boolean hasListeners(PolarisEventType polarisEventType) {
return enabledEventTypes.contains(polarisEventType);
}
+
+ private static class ListenerExecutor implements Executor {
+
+ private final Executor delegate;
+ private final Queue<Runnable> queue;
+ private final AtomicBoolean draining = new AtomicBoolean(false);
+
+ ListenerExecutor(Executor delegate, int capacity) {
+ this.delegate = delegate;
+ this.queue =
+ capacity == -1 ? new ConcurrentLinkedQueue<>() : new
ArrayBlockingQueue<>(capacity);
+ }
+
+ @Override
+ public void execute(@NonNull Runnable task) {
+ if (!queue.offer(task)) {
+ throw new RejectedExecutionException("Event listener queue is full");
+ }
+ if (draining.compareAndSet(false, true)) {
+ delegate.execute(this::drain);
Review Comment:
WDYT about using something from `reactor.core` to build the ordered delivery
pipeline?
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