dongnuo123 commented on code in PR #15798:
URL: https://github.com/apache/kafka/pull/15798#discussion_r1582403702
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group-coordinator/src/main/java/org/apache/kafka/coordinator/group/GroupMetadataManager.java:
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@@ -1413,6 +1506,243 @@ private
CoordinatorResult<ConsumerGroupHeartbeatResponseData, Record> consumerGr
return new CoordinatorResult<>(records, response);
}
+ /**
+ * Handle a JoinGroupRequest to a ConsumerGroup.
+ *
+ * @param group The group to join.
+ * @param context The request context.
+ * @param request The actual JoinGroup request.
+ * @param responseFuture The join group response future.
+ *
+ * @return The result that contains records to append if the join group
phase completes.
+ */
+ private CoordinatorResult<Void, Record> classicGroupJoinToConsumerGroup(
+ ConsumerGroup group,
+ RequestContext context,
+ JoinGroupRequestData request,
+ CompletableFuture<JoinGroupResponseData> responseFuture
+ ) throws ApiException {
+ final long currentTimeMs = time.milliseconds();
+ final List<Record> records = new ArrayList<>();
+ final String groupId = request.groupId();
+ String memberId = request.memberId();
+ final String instanceId = request.groupInstanceId();
+ final JoinGroupRequestProtocolCollection protocols =
request.protocols();
+ final boolean isUnknownMember = memberId.equals(UNKNOWN_MEMBER_ID);
+
+ throwIfConsumerGroupIsFull(group, memberId);
+ throwIfClassicProtocolIsNotSupported(group, memberId,
request.protocolType(), protocols);
+ // TODO: need to throw an exception if group is dead?
Review Comment:
Do we ever transition a consumer group to DEAD? It's always confusing when
it comes to type check in the new group coordinator.
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