dongnuo123 commented on code in PR #14462:
URL: https://github.com/apache/kafka/pull/14462#discussion_r1343272684
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group-coordinator/src/main/java/org/apache/kafka/coordinator/group/GroupMetadataManager.java:
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@@ -444,6 +445,66 @@ public List<ListGroupsResponseData.ListedGroup>
listGroups(List<String> statesFi
return groupStream.map(group ->
group.asListedGroup(committedOffset)).collect(Collectors.toList());
}
+ /**
+ * Handles a DescribeGroup request.
+ *
+ * @param groupIds The IDs of the groups to describe.
+ * @param committedOffset A specified committed offset corresponding to
this shard.
+ *
+ * @return A list containing the DescribeGroupsResponseData.DescribedGroup.
+ */
+ public List<DescribeGroupsResponseData.DescribedGroup> describeGroups(
+ List<String> groupIds,
+ long committedOffset
+ ) {
+ final List<DescribeGroupsResponseData.DescribedGroup> describedGroups
= new ArrayList<>();
+ groupIds.forEach(groupId -> {
+ try {
+ Group group = group(groupId, committedOffset);
+ if (group.type() != GENERIC) {
+ // We don't support upgrading/downgrading between
protocols at the moment, so
+ // we throw an exception if a group exists with the wrong
type.
+ throw new GroupIdNotFoundException(String.format("Group %s
is not a generic group.",
+ groupId));
+ }
+ GenericGroup genericGroup = (GenericGroup) group;
Review Comment:
Yeah, you're right. We should return a GroupCoordinator.DeadGroup
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