niket-goel commented on code in PR #12206:
URL: https://github.com/apache/kafka/pull/12206#discussion_r891518982
##########
clients/src/main/java/org/apache/kafka/clients/admin/KafkaAdminClient.java:
##########
@@ -4321,6 +4328,94 @@ 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
DescribeQuorumResponseData.PartitionData partition) {
+ List<QuorumInfo.ReplicaState> voters = new ArrayList<>();
+ List<QuorumInfo.ReplicaState> observers = new ArrayList<>();
+ partition.currentVoters().forEach(v -> {
+ voters.add(new QuorumInfo.ReplicaState(v.replicaId(),
+ v.logEndOffset(),
+ OptionalLong.of(v.lastFetchTimestamp()),
+ OptionalLong.of(v.lastCaughtUpTimestamp())));
+ });
+ partition.observers().forEach(o -> {
+ observers.add(new QuorumInfo.ReplicaState(o.replicaId(),
+ o.logEndOffset(),
+ OptionalLong.of(o.lastFetchTimestamp()),
+ OptionalLong.of(o.lastCaughtUpTimestamp())));
+ });
+ QuorumInfo info = new QuorumInfo(partition.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) {
+ String msg = String.format("DescribeMetadataQuorum
received {} topics when 1 was expected",
+ quorumResponse.data().topics().size());
+ log.debug(msg);
+ throw new UnknownServerException(msg);
+ }
+ DescribeQuorumResponseData.TopicData topic =
quorumResponse.data().topics().get(0);
+ if (!topic.topicName().equals(METADATA_TOPIC_NAME)) {
+ String msg = String.format("DescribeMetadataQuorum
received a topic with name {} when {} was expected",
+ topic.topicName(), METADATA_TOPIC_NAME);
+ log.debug(msg);
+ throw new UnknownServerException(msg);
+ }
+ if (topic.partitions().size() > 1) {
+ String msg = String.format("DescribeMetadataQuorum
received a topic {} with {} partitions when 1 was expected",
+ topic.topicName(), topic.partitions().size());
+ log.debug(msg);
+ throw new UnknownServerException(msg);
+ }
+ DescribeQuorumResponseData.PartitionData partition =
topic.partitions().get(0);
+ if (partition.partitionIndex() !=
METADATA_TOPIC_PARTITION.partition()) {
+ String msg = String.format("DescribeMetadataQuorum
received a single partition with index {} when {} was expected",
+ partition.partitionIndex(),
METADATA_TOPIC_PARTITION.partition());
+ log.debug(msg);
+ throw new UnknownServerException(msg);
+ }
+ if (partition.errorCode() != Errors.NONE.code()) {
+ throw
Errors.forCode(partition.errorCode()).exception();
+ }
+ future.complete(createQuorumResult(partition));
+ } catch (RuntimeException e) {
+ throw e;
+ } catch (Exception e) {
Review Comment:
So this block is me trying to have a single `future.completeExceptionally()`
call in this code block. We are catching `UnknownServerException` and any
exception that might be returned by the server in its response. The generic
catch handler can be avoided by not throwing the exceptions returned by the
server, and instead just completing exceptionally within the block above. I
just find it more maintainable to have single calls to completions etc. If this
is creating some other issues in the code, i can change this.
##########
clients/src/main/java/org/apache/kafka/common/requests/DescribeQuorumResponse.java:
##########
@@ -93,4 +94,25 @@ public static DescribeQuorumResponseData
singletonResponse(TopicPartition topicP
public static DescribeQuorumResponse parse(ByteBuffer buffer, short
version) {
return new DescribeQuorumResponse(new DescribeQuorumResponseData(new
ByteBufferAccessor(buffer), version));
}
+
+ /**
+ * Get the replica info for the given topic name and partition.
+ * @param topicName Name of the topic to fetch
+ * @param partition Index of the parition to fetch
+ * @param getVoterInfo Return the voter information if true, return
observers otherwise
+ * @return List of {@link ReplicaState}
+ */
+ private List<ReplicaState> getReplicaInfo(String topicName, Integer
partition, boolean getVoterInfo) {
Review Comment:
no we are not. Thanks for the catch!
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