dajac commented on code in PR #13639: URL: https://github.com/apache/kafka/pull/13639#discussion_r1205138023
########## group-coordinator/src/test/java/org/apache/kafka/coordinator/group/GroupMetadataManagerTest.java: ########## @@ -0,0 +1,2080 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You under the Apache License, Version 2.0 + * (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.apache.kafka.coordinator.group; + +import org.apache.kafka.common.Uuid; +import org.apache.kafka.common.errors.FencedMemberEpochException; +import org.apache.kafka.common.errors.GroupIdNotFoundException; +import org.apache.kafka.common.errors.GroupMaxSizeReachedException; +import org.apache.kafka.common.errors.InvalidRequestException; +import org.apache.kafka.common.errors.NotCoordinatorException; +import org.apache.kafka.common.errors.UnknownMemberIdException; +import org.apache.kafka.common.errors.UnknownServerException; +import org.apache.kafka.common.errors.UnsupportedAssignorException; +import org.apache.kafka.common.message.ConsumerGroupHeartbeatRequestData; +import org.apache.kafka.common.message.ConsumerGroupHeartbeatResponseData; +import org.apache.kafka.common.metadata.PartitionRecord; +import org.apache.kafka.common.metadata.TopicRecord; +import org.apache.kafka.common.network.ClientInformation; +import org.apache.kafka.common.network.ListenerName; +import org.apache.kafka.common.protocol.ApiKeys; +import org.apache.kafka.common.protocol.ApiMessage; +import org.apache.kafka.common.requests.RequestContext; +import org.apache.kafka.common.requests.RequestHeader; +import org.apache.kafka.common.security.auth.KafkaPrincipal; +import org.apache.kafka.common.security.auth.SecurityProtocol; +import org.apache.kafka.common.utils.LogContext; +import org.apache.kafka.coordinator.group.assignor.AssignmentSpec; +import org.apache.kafka.coordinator.group.assignor.GroupAssignment; +import org.apache.kafka.coordinator.group.assignor.PartitionAssignor; +import org.apache.kafka.coordinator.group.assignor.PartitionAssignorException; +import org.apache.kafka.coordinator.group.consumer.Assignment; +import org.apache.kafka.coordinator.group.consumer.ConsumerGroup; +import org.apache.kafka.coordinator.group.consumer.ConsumerGroupMember; +import org.apache.kafka.coordinator.group.consumer.TopicMetadata; +import org.apache.kafka.coordinator.group.generated.ConsumerGroupCurrentMemberAssignmentKey; +import org.apache.kafka.coordinator.group.generated.ConsumerGroupCurrentMemberAssignmentValue; +import org.apache.kafka.coordinator.group.generated.ConsumerGroupMemberMetadataKey; +import org.apache.kafka.coordinator.group.generated.ConsumerGroupMemberMetadataValue; +import org.apache.kafka.coordinator.group.generated.ConsumerGroupMetadataKey; +import org.apache.kafka.coordinator.group.generated.ConsumerGroupMetadataValue; +import org.apache.kafka.coordinator.group.generated.ConsumerGroupPartitionMetadataKey; +import org.apache.kafka.coordinator.group.generated.ConsumerGroupPartitionMetadataValue; +import org.apache.kafka.coordinator.group.generated.ConsumerGroupTargetAssignmentMemberKey; +import org.apache.kafka.coordinator.group.generated.ConsumerGroupTargetAssignmentMemberValue; +import org.apache.kafka.coordinator.group.generated.ConsumerGroupTargetAssignmentMetadataKey; +import org.apache.kafka.coordinator.group.generated.ConsumerGroupTargetAssignmentMetadataValue; +import org.apache.kafka.image.TopicImage; +import org.apache.kafka.image.TopicsDelta; +import org.apache.kafka.image.TopicsImage; +import org.apache.kafka.server.common.ApiMessageAndVersion; +import org.apache.kafka.timeline.SnapshotRegistry; +import org.junit.jupiter.api.Test; + +import java.net.InetAddress; +import java.util.ArrayList; +import java.util.Arrays; +import java.util.Collections; +import java.util.HashMap; +import java.util.HashSet; +import java.util.List; +import java.util.Map; +import java.util.Objects; +import java.util.Set; + +import static org.apache.kafka.coordinator.group.consumer.AssignmentTestUtil.mkAssignment; +import static org.apache.kafka.coordinator.group.consumer.AssignmentTestUtil.mkTopicAssignment; +import static org.junit.jupiter.api.AssertionFailureBuilder.assertionFailure; +import static org.junit.jupiter.api.Assertions.assertEquals; +import static org.junit.jupiter.api.Assertions.assertNotEquals; +import static org.junit.jupiter.api.Assertions.assertNotNull; +import static org.junit.jupiter.api.Assertions.assertThrows; +import static org.mockito.ArgumentMatchers.any; +import static org.mockito.Mockito.mock; +import static org.mockito.Mockito.when; + +public class GroupMetadataManagerTest { + static class MockPartitionAssignor implements PartitionAssignor { + private final String name; + private AssignmentSpec lastSpecReceived = null; + private GroupAssignment prepareGroupAssignment = null; + + MockPartitionAssignor(String name) { + this.name = name; + } + + public AssignmentSpec lastSpecReceived() { + return lastSpecReceived; + } + + public void prepareGroupAssignment(GroupAssignment prepareGroupAssignment) { + this.prepareGroupAssignment = prepareGroupAssignment; + } + + @Override + public String name() { + return name; + } + + @Override + public GroupAssignment assign(AssignmentSpec assignmentSpec) throws PartitionAssignorException { + lastSpecReceived = assignmentSpec; + return prepareGroupAssignment; + } + } + + public static class TopicsImageBuilder { + private TopicsDelta delta = new TopicsDelta(TopicsImage.EMPTY); + + public TopicsImageBuilder addTopic( + Uuid topicId, + String topicName, + int numPartitions + ) { + delta.replay(new TopicRecord().setTopicId(topicId).setName(topicName)); + for (int i = 0; i < numPartitions; i++) { + delta.replay(new PartitionRecord() + .setTopicId(topicId) + .setPartitionId(i)); + } + return this; + } + + public TopicsImage build() { + return delta.apply(); + } + } + + static class ConsumerGroupBuilder { + private final String groupId; + private final int groupEpoch; + private int assignmentEpoch; + private final Map<String, ConsumerGroupMember> members = new HashMap<>(); + private final Map<String, Assignment> assignments = new HashMap<>(); + + public ConsumerGroupBuilder(String groupId, int groupEpoch) { + this.groupId = groupId; + this.groupEpoch = groupEpoch; + this.assignmentEpoch = 0; + } + + public ConsumerGroupBuilder withMember(ConsumerGroupMember member) { + this.members.put(member.memberId(), member); + return this; + } + + public ConsumerGroupBuilder withAssignment(String memberId, Map<Uuid, Set<Integer>> assignment) { + this.assignments.put(memberId, new Assignment(assignment)); + return this; + } + + public ConsumerGroupBuilder withAssignment(String memberId, Assignment assignment) { + this.assignments.put(memberId, assignment); + return this; + } + + public ConsumerGroupBuilder withAssignmentEpoch(int assignmentEpoch) { + this.assignmentEpoch = assignmentEpoch; + return this; + } + + public List<Record> build(TopicsImage topicsImage) { + List<Record> records = new ArrayList<>(); + + // Add subscription records for members. + members.forEach((memberId, member) -> { + records.add(RecordHelpers.newMemberSubscriptionRecord(groupId, member)); + }); + + // Add subscription metadata. + Map<String, TopicMetadata> subscriptionMetadata = new HashMap<>(); 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