lianetm commented on code in PR #14386: URL: https://github.com/apache/kafka/pull/14386#discussion_r1327372398
########## clients/src/main/java/org/apache/kafka/clients/consumer/internals/TopicMetadataRequestManager.java: ########## @@ -141,35 +142,57 @@ private Optional<NetworkClientDelegate.UnsentRequest> send(final long currentTim final MetadataRequest.Builder request; request = topic.map(t -> new MetadataRequest.Builder(Collections.singletonList(t), allowAutoTopicCreation)) - .orElseGet(MetadataRequest.Builder::allTopics); - - final NetworkClientDelegate.UnsentRequest unsent = new NetworkClientDelegate.UnsentRequest( - request, - Optional.empty(), - (response, exception) -> { - if (exception != null) { - this.future.completeExceptionally(new KafkaException(exception)); - inflightRequests.remove(topic); - return; - } - - try { - Map<String, List<PartitionInfo>> res = handleTopicMetadataResponse((MetadataResponse) response.responseBody()); - future.complete(res); - inflightRequests.remove(topic); - } catch (RetriableException e) { - if (e instanceof TimeoutException) { - inflightRequests.remove(topic); - } - this.onFailedAttempt(currentTimeMs); - } catch (Exception t) { - this.future.completeExceptionally(t); - inflightRequests.remove(topic); - } - }); + .orElseGet(MetadataRequest.Builder::allTopics); + + final NetworkClientDelegate.UnsentRequest unsent = createUnsentRequest(request); return Optional.of(unsent); } + private NetworkClientDelegate.UnsentRequest createUnsentRequest( + final MetadataRequest.Builder request) { + return new NetworkClientDelegate.UnsentRequest( + request, + Optional.empty(), + this::processResponseOrException + ); + } + + private void processResponseOrException(final ClientResponse response, + final Throwable exception) { + long responseTimeMs = System.currentTimeMillis(); + if (exception != null) { + handleException(exception, responseTimeMs); + return; + } + handleResponse(response, responseTimeMs); Review Comment: It seems that the exception handling logic here ends up in 2 places. Apart from the initial `handleException`, this `handleResponse` could be as well end up handling exceptions, in a very similar way (catch block on `handleResponse` vs the `handleException`). If we prefer to keep them separated because of the "`retryOnTimeout`" part, which seems to be what makes them different, it would be helpful maybe to add a comment to describe that -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: jira-unsubscr...@kafka.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org