cadonna commented on code in PR #18669: URL: https://github.com/apache/kafka/pull/18669#discussion_r1934181268
########## group-coordinator/src/main/java/org/apache/kafka/coordinator/group/streams/StreamsCoordinatorRecordHelpers.java: ########## @@ -0,0 +1,434 @@ +/* + * 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.streams; + +import org.apache.kafka.common.message.StreamsGroupHeartbeatRequestData; +import org.apache.kafka.coordinator.common.runtime.CoordinatorRecord; +import org.apache.kafka.coordinator.group.generated.StreamsGroupCurrentMemberAssignmentKey; +import org.apache.kafka.coordinator.group.generated.StreamsGroupCurrentMemberAssignmentValue; +import org.apache.kafka.coordinator.group.generated.StreamsGroupMemberMetadataKey; +import org.apache.kafka.coordinator.group.generated.StreamsGroupMemberMetadataValue; +import org.apache.kafka.coordinator.group.generated.StreamsGroupMetadataKey; +import org.apache.kafka.coordinator.group.generated.StreamsGroupMetadataValue; +import org.apache.kafka.coordinator.group.generated.StreamsGroupPartitionMetadataKey; +import org.apache.kafka.coordinator.group.generated.StreamsGroupPartitionMetadataValue; +import org.apache.kafka.coordinator.group.generated.StreamsGroupPartitionMetadataValue.PartitionMetadata; +import org.apache.kafka.coordinator.group.generated.StreamsGroupTargetAssignmentMemberKey; +import org.apache.kafka.coordinator.group.generated.StreamsGroupTargetAssignmentMemberValue; +import org.apache.kafka.coordinator.group.generated.StreamsGroupTargetAssignmentMetadataKey; +import org.apache.kafka.coordinator.group.generated.StreamsGroupTargetAssignmentMetadataValue; +import org.apache.kafka.coordinator.group.generated.StreamsGroupTopologyKey; +import org.apache.kafka.coordinator.group.generated.StreamsGroupTopologyValue; +import org.apache.kafka.server.common.ApiMessageAndVersion; + +import java.util.ArrayList; +import java.util.Comparator; +import java.util.List; +import java.util.Map; +import java.util.Set; +import java.util.stream.Collectors; + +/** + * This class contains helper methods to create records stored in the __consumer_offsets topic. + */ +public class StreamsCoordinatorRecordHelpers { + + private StreamsCoordinatorRecordHelpers() { + } + + public static CoordinatorRecord newStreamsGroupMemberRecord( + String groupId, + StreamsGroupMember member + ) { + return CoordinatorRecord.record( + new StreamsGroupMemberMetadataKey() + .setGroupId(groupId) + .setMemberId(member.memberId()), + new ApiMessageAndVersion( + new StreamsGroupMemberMetadataValue() + .setRackId(member.rackId().orElse(null)) + .setInstanceId(member.instanceId().orElse(null)) + .setClientId(member.clientId()) + .setClientHost(member.clientHost()) + .setRebalanceTimeoutMs(member.rebalanceTimeoutMs()) + .setTopologyEpoch(member.topologyEpoch()) + .setProcessId(member.processId()) + .setUserEndpoint(member.userEndpoint().orElse(null)) + .setClientTags(member.clientTags().entrySet().stream().map(e -> + new StreamsGroupMemberMetadataValue.KeyValue() + .setKey(e.getKey()) + .setValue(e.getValue()) + ).sorted(Comparator.comparing(StreamsGroupMemberMetadataValue.KeyValue::key)).collect(Collectors.toList())), + (short) 0 + ) + ); + } + + /** + * Creates a StreamsGroupMemberMetadata tombstone. + * + * @param groupId The streams group id. + * @param memberId The streams group member id. + * @return The record. + */ + public static CoordinatorRecord newStreamsGroupMemberTombstoneRecord( + String groupId, + String memberId + ) { + return CoordinatorRecord.tombstone( + new StreamsGroupMemberMetadataKey() + .setGroupId(groupId) + .setMemberId(memberId) + ); + } + + /** + * Creates a StreamsGroupPartitionMetadata record. + * + * @param groupId The streams group id. + * @param newPartitionMetadata The partition metadata. + * @return The record. + */ + public static CoordinatorRecord newStreamsGroupPartitionMetadataRecord( + String groupId, + Map<String, org.apache.kafka.coordinator.group.streams.TopicMetadata> newPartitionMetadata Review Comment: For what it is worth, I would use the following instead of the `if`: ```java Objects.requireNotNull(variable, "variable should not be null here"); ``` -- This is an automated message from the Apache Git Service. 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