niket-goel commented on code in PR #12206:
URL: https://github.com/apache/kafka/pull/12206#discussion_r889220152
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clients/src/main/java/org/apache/kafka/clients/admin/KafkaAdminClient.java:
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@@ -4321,6 +4328,91 @@ void handleFailure(Throwable throwable) {
return new UpdateFeaturesResult(new HashMap<>(updateFutures));
}
+ @Override
+ public DescribeMetadataQuorumResult
describeMetadataQuorum(DescribeMetadataQuorumOptions options) {
+ NodeProvider provider = new LeastLoadedNodeProvider();
+
+ final KafkaFutureImpl<QuorumInfo> future = new KafkaFutureImpl<>();
+ final long now = time.milliseconds();
+ final Call call = new Call(
+ "describeMetadataQuorum", calcDeadlineMs(now,
options.timeoutMs()), provider) {
+
+ private QuorumInfo createQuorumResult(final DescribeQuorumResponse
response) {
+ Integer partition = 0;
+ String topicName = response.getTopicNameByIndex(0);
+ Integer leaderId = response.getPartitionLeaderId(topicName,
partition);
+ List<QuorumInfo.ReplicaState> voters = new ArrayList<>();
+ List<QuorumInfo.ReplicaState> observers = new ArrayList<>();
+ response.getVoterInfo(topicName, partition).forEach(v -> {
+ voters.add(new QuorumInfo.ReplicaState(v.replicaId(),
+ v.logEndOffset(),
+ OptionalLong.of(v.lastFetchTimestamp()),
+ OptionalLong.of(v.lastCaughtUpTimestamp())));
+ });
+ response.getObserverInfo(topicName, partition).forEach(o -> {
+ observers.add(new QuorumInfo.ReplicaState(o.replicaId(),
+ o.logEndOffset(),
+ OptionalLong.of(o.lastFetchTimestamp()),
+ OptionalLong.of(o.lastCaughtUpTimestamp())));
+ });
+ QuorumInfo info = new QuorumInfo(topicName, leaderId, voters,
observers);
+ return info;
+ }
+
+ @Override
+ DescribeQuorumRequest.Builder createRequest(int timeoutMs) {
+ return new Builder(DescribeQuorumRequest.singletonRequest(
+ new TopicPartition(METADATA_TOPIC_NAME,
METADATA_TOPIC_PARTITION.partition())));
+ }
+
+ @Override
+ void handleResponse(AbstractResponse response) {
+ final DescribeQuorumResponse quorumResponse =
(DescribeQuorumResponse) response;
+ try {
+ if (quorumResponse.data().errorCode() !=
Errors.NONE.code()) {
+ throw
Errors.forCode(quorumResponse.data().errorCode()).exception();
+ }
+ if (quorumResponse.data().topics().size() > 1) {
+ log.error("DescribeMetadataQuorum received {} topics
when 1 was expected",
+ quorumResponse.data().topics().size());
+ throw new UnknownServerException();
Review Comment:
Good point about adding the message to the exception being returned.
The behavior of the code block is equivalent to completing the future and
returning. I just didn't want to repeat the future completion code. Is there a
well known convention to handle code blocks like this in JAVA?
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