dajac commented on code in PR #15152:
URL: https://github.com/apache/kafka/pull/15152#discussion_r1461611749
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group-coordinator/src/main/java/org/apache/kafka/coordinator/group/GroupMetadataManager.java:
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@@ -452,21 +453,39 @@ public Group group(String groupId, long committedOffset)
throws GroupIdNotFoundE
/**
* Get the Group List.
*
- * @param statesFilter The states of the groups we want to list.
- * If empty all groups are returned with their state.
- * @param committedOffset A specified committed offset corresponding to
this shard
+ * @param statesFilter The states of the groups we want to list.
+ * If empty, all groups are returned with their
state.
+ * @param typesFilter The types of the groups we want to list.
+ * If empty, all groups are returned with their
type.
+ * @param committedOffset A specified committed offset corresponding to
this shard.
*
* @return A list containing the ListGroupsResponseData.ListedGroup
*/
+ public List<ListGroupsResponseData.ListedGroup> listGroups(
+ Set<String> statesFilter,
+ Set<String> typesFilter,
+ long committedOffset
+ ) {
+ // Convert typesFilter to lowercase to make the filter
case-insensitive.
+ Set<String> lowerCaseTypesFilter = typesFilter.stream()
+ .map(String::toLowerCase)
+ .collect(Collectors.toCollection(HashSet::new));
+
+ Predicate<Group> combinedFilter = group -> {
+ boolean stateCheck = statesFilter.isEmpty() ||
statesFilter.contains(group.stateAsString(committedOffset));
+ boolean typeCheck = lowerCaseTypesFilter.isEmpty() ||
+
lowerCaseTypesFilter.contains(group.type().toString().toLowerCase());
Review Comment:
Sorry, I was not clear. I do think that we need to lowercase somewhere.
However, I was trying to avoid doing it here while iterating over all the
groups. This is a waste. This is why I suggested to store the lowercase version
of the type in the enum or convert to the enum before. Do you see what I mean?
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