frankvicky commented on code in PR #16800:
URL: https://github.com/apache/kafka/pull/16800#discussion_r1706667554
##########
group-coordinator/src/test/java/org/apache/kafka/coordinator/group/GroupMetadataManagerTest.java:
##########
@@ -10123,6 +10123,172 @@ public void
testConsumerGroupHeartbeatWithPreparingRebalanceClassicGroup() throw
assertEquals(group,
context.groupMetadataManager.getOrMaybeCreateClassicGroup("group-id", false));
}
+ @Test
+ public void
testConsumerGroupHeartbeatToClassicGroupFromExistingStaticMember() {
+ String groupId = "group-id";
+ String memberId = "member-id";
+ String instanceId = "instance-id";
+ Uuid fooTopicId = Uuid.randomUuid();
+ String fooTopicName = "foo";
+
+ MetadataImage metadataImage = new MetadataImageBuilder()
+ .addTopic(fooTopicId, fooTopicName, 1)
+ .addRacks()
+ .build();
+
+ GroupMetadataManagerTestContext context = new
GroupMetadataManagerTestContext.Builder()
+
.withConsumerGroupMigrationPolicy(ConsumerGroupMigrationPolicy.UPGRADE)
+ .withConsumerGroupAssignors(Collections.singletonList(new
NoOpPartitionAssignor()))
+ .withMetadataImage(metadataImage)
+ .build();
+
+ JoinGroupRequestData.JoinGroupRequestProtocolCollection protocols =
new JoinGroupRequestData.JoinGroupRequestProtocolCollection(1);
+ protocols.add(new JoinGroupRequestData.JoinGroupRequestProtocol()
+ .setName(NoOpPartitionAssignor.NAME)
+
.setMetadata(Utils.toArray(ConsumerProtocol.serializeSubscription(new
ConsumerPartitionAssignor.Subscription(
+ Collections.singletonList(fooTopicName),
+ null,
+ Collections.singletonList(new TopicPartition(fooTopicName, 0))
+ ))))
+ );
+
+ Map<String, byte[]> assignments = new HashMap<String, byte[]>() {
+ {
+ put(
+ memberId,
+ Utils.toArray(ConsumerProtocol.serializeAssignment(new
ConsumerPartitionAssignor.Assignment(
+ Collections.singletonList(new
TopicPartition(fooTopicName, 0))
+ )))
+ );
+ }
+ };
+
+ // Create a stable classic group with a static member.
+ ClassicGroup group = context.createClassicGroup(groupId);
+ group.setProtocolName(Optional.ofNullable(NoOpPartitionAssignor.NAME));
+ group.add(
+ new ClassicGroupMember(
+ memberId,
+ Optional.ofNullable(instanceId),
+ "client",
+ "localhost/127.0.0.1",
Review Comment:
nit: It would be beneficial to extract this string literal as a variable
since it is used more than once and is not a short string.
##########
group-coordinator/src/test/java/org/apache/kafka/coordinator/group/GroupMetadataManagerTest.java:
##########
@@ -10123,6 +10123,172 @@ public void
testConsumerGroupHeartbeatWithPreparingRebalanceClassicGroup() throw
assertEquals(group,
context.groupMetadataManager.getOrMaybeCreateClassicGroup("group-id", false));
}
+ @Test
+ public void
testConsumerGroupHeartbeatToClassicGroupFromExistingStaticMember() {
+ String groupId = "group-id";
+ String memberId = "member-id";
+ String instanceId = "instance-id";
+ Uuid fooTopicId = Uuid.randomUuid();
+ String fooTopicName = "foo";
+
+ MetadataImage metadataImage = new MetadataImageBuilder()
+ .addTopic(fooTopicId, fooTopicName, 1)
+ .addRacks()
+ .build();
+
+ GroupMetadataManagerTestContext context = new
GroupMetadataManagerTestContext.Builder()
+
.withConsumerGroupMigrationPolicy(ConsumerGroupMigrationPolicy.UPGRADE)
+ .withConsumerGroupAssignors(Collections.singletonList(new
NoOpPartitionAssignor()))
+ .withMetadataImage(metadataImage)
+ .build();
+
+ JoinGroupRequestData.JoinGroupRequestProtocolCollection protocols =
new JoinGroupRequestData.JoinGroupRequestProtocolCollection(1);
+ protocols.add(new JoinGroupRequestData.JoinGroupRequestProtocol()
+ .setName(NoOpPartitionAssignor.NAME)
+
.setMetadata(Utils.toArray(ConsumerProtocol.serializeSubscription(new
ConsumerPartitionAssignor.Subscription(
+ Collections.singletonList(fooTopicName),
+ null,
+ Collections.singletonList(new TopicPartition(fooTopicName, 0))
+ ))))
+ );
+
+ Map<String, byte[]> assignments = new HashMap<String, byte[]>() {
+ {
+ put(
+ memberId,
+ Utils.toArray(ConsumerProtocol.serializeAssignment(new
ConsumerPartitionAssignor.Assignment(
+ Collections.singletonList(new
TopicPartition(fooTopicName, 0))
+ )))
+ );
+ }
+ };
Review Comment:
nit: The **double brace initialization** is not easy to understand and
actually creates an anonymous class. Since you only have a single entry,
consider replacing it with `Collections.singletonMap()` for a more concise and
easily understandable solution.
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