philipnee commented on code in PR #14680:
URL: https://github.com/apache/kafka/pull/14680#discussion_r1388411256
##########
clients/src/main/java/org/apache/kafka/clients/consumer/internals/PrototypeAsyncConsumer.java:
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@@ -1096,4 +1111,76 @@ private void subscribeInternal(Collection<String>
topics, Optional<ConsumerRebal
}
}
-}
\ No newline at end of file
+ private void maybeThrowFencedInstanceException() {
+ if (isFenced) {
+ throw new FencedInstanceIdException("Get fenced exception for
group.instance.id " +
+ groupInstanceId.orElse("null"));
+ }
+ }
+
+ // Visible for testing
+ void maybeInvokeCallbacks() {
+ if (callbacks() > 0) {
+ invoker.executeCallbacks();
+ }
+ }
+
+ // Visible for testing
+ int callbacks() {
+ return invoker.callbackQueue.size();
+ }
+
+ /**
+ * Utility class that helps the application thread to invoke user
registered {@link OffsetCommitCallback}. This is
+ * achieved by having the background thread to register a {@link
OffsetCommitCallbackTask} to the invoker upon the
+ * future completion, and execute the callbacks when user
polls/commits/closes the consumer.
+ */
+ private class OffsetCommitCallbackInvoker {
Review Comment:
Similar to OffsetCommitCallbackTask
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