cmccabe commented on code in PR #12063:
URL: https://github.com/apache/kafka/pull/12063#discussion_r852487013
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core/src/main/scala/kafka/server/metadata/BrokerMetadataListener.scala:
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@@ -248,6 +248,24 @@ class BrokerMetadataListener(
}
}
+ // This is used in tests to alter the publisher that is in use by the broker.
+ def alterPublisher(publisher: MetadataPublisher): CompletableFuture[Void] = {
+ val event = new AlterPublisherEvent(publisher)
+ eventQueue.append(event)
+ event.future
+ }
+
+ class AlterPublisherEvent(publisher: MetadataPublisher)
+ extends EventQueue.FailureLoggingEvent(log) {
+ val future = new CompletableFuture[Void]()
+
+ override def run(): Unit = {
+ _publisher = Some(publisher)
+ log.info(s"Set publisher to ${publisher}")
Review Comment:
This is only used in unit tests. I think it's good to have it in the log4j
since earlier events may have been published differently by the earlier
publisher.
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