jeffkbkim commented on code in PR #13880: URL: https://github.com/apache/kafka/pull/13880#discussion_r1243002218
########## core/src/main/scala/kafka/coordinator/group/CoordinatorLoaderImpl.scala: ########## @@ -0,0 +1,168 @@ +/* + * 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 kafka.coordinator.group + +import kafka.server.ReplicaManager +import kafka.utils.Logging +import org.apache.kafka.common.TopicPartition +import org.apache.kafka.common.errors.NotLeaderOrFollowerException +import org.apache.kafka.common.record.{FileRecords, MemoryRecords} +import org.apache.kafka.coordinator.group.runtime.CoordinatorLoader.{Deserializer, UnknownRecordTypeException} +import org.apache.kafka.coordinator.group.runtime.{CoordinatorLoader, CoordinatorPlayback} +import org.apache.kafka.server.util.KafkaScheduler +import org.apache.kafka.storage.internals.log.FetchIsolation + +import java.nio.ByteBuffer +import java.util.concurrent.CompletableFuture +import java.util.concurrent.atomic.AtomicBoolean +import scala.jdk.CollectionConverters._ + +/** + * Coordinator loader which reads records from a partition and replays them + * to a group coordinator. + * + * @param replicaManager The replica manager. + * @param deserializer The deserializer to use. + * @param loadBufferSize The load buffer size. + * @tparam T The record type. + */ +class CoordinatorLoaderImpl[T]( + replicaManager: ReplicaManager, + deserializer: Deserializer[T], + loadBufferSize: Int +) extends CoordinatorLoader[T] with Logging { + private val isRunning = new AtomicBoolean(true) + private val scheduler = new KafkaScheduler(1) + scheduler.startup() + + /** + * Loads the coordinator by reading all the records from the TopicPartition + * and applying them to the Replayable object. + * + * @param tp The TopicPartition to read from. + * @param coordinator The object to apply records to. + */ + override def load( + tp: TopicPartition, + coordinator: CoordinatorPlayback[T] +): CompletableFuture[Void] = { + val future = new CompletableFuture[Void]() + val result = scheduler.scheduleOnce(s"Load coordinator from $tp", + () => doLoad(tp, coordinator, future)) + if (result.isCancelled) { + future.completeExceptionally(new RuntimeException("Coordinator loader is closed.")) + } + future + } + + private def doLoad( + tp: TopicPartition, + coordinator: CoordinatorPlayback[T], + future: CompletableFuture[Void] + ): Unit = { + try { + replicaManager.getLog(tp) match { + case None => + future.completeExceptionally(new NotLeaderOrFollowerException( + s"Could not load records from $tp because the log does not exist.")) + + case Some(log) => + def logEndOffset: Long = replicaManager.getLogEndOffset(tp).getOrElse(-1L) + + // buffer may not be needed if records are read from memory + var buffer = ByteBuffer.allocate(0) + // loop breaks if leader changes at any time during the load, since logEndOffset is -1 + var currOffset = log.logStartOffset + // loop breaks if no records have been read, since the end of the log has been reached + var readAtLeastOneRecord = true + + while (currOffset < logEndOffset && readAtLeastOneRecord && isRunning.get) { + val fetchDataInfo = log.read( + startOffset = currOffset, + maxLength = loadBufferSize, + isolation = FetchIsolation.LOG_END, + minOneMessage = true + ) + + readAtLeastOneRecord = fetchDataInfo.records.sizeInBytes > 0 + + val memoryRecords = (fetchDataInfo.records: @unchecked) match { + case records: MemoryRecords => + records + + case fileRecords: FileRecords => + val sizeInBytes = fileRecords.sizeInBytes + val bytesNeeded = Math.max(loadBufferSize, sizeInBytes) + + // minOneMessage = true in the above log.read means that the buffer may need to Review Comment: nit: was confused on log.read. maybe use `log.read()`? ########## group-coordinator/src/test/java/org/apache/kafka/coordinator/group/RecordSerdeTest.java: ########## @@ -0,0 +1,260 @@ +/* + * 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.protocol.ApiMessage; +import org.apache.kafka.common.protocol.MessageUtil; +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.coordinator.group.generated.GroupMetadataKey; +import org.apache.kafka.coordinator.group.generated.GroupMetadataValue; +import org.apache.kafka.coordinator.group.generated.OffsetCommitKey; +import org.apache.kafka.coordinator.group.generated.OffsetCommitValue; +import org.apache.kafka.coordinator.group.runtime.CoordinatorLoader; +import org.apache.kafka.server.common.ApiMessageAndVersion; +import org.junit.jupiter.api.Test; + +import java.nio.ByteBuffer; + +import static org.junit.jupiter.api.Assertions.assertArrayEquals; +import static org.junit.jupiter.api.Assertions.assertEquals; +import static org.junit.jupiter.api.Assertions.assertNull; +import static org.junit.jupiter.api.Assertions.assertThrows; +import static org.junit.jupiter.api.Assertions.assertTrue; + +public class RecordSerdeTest { + @Test + public void testSerializeKey() { + RecordSerde serializer = new RecordSerde(); + Record record = new Record( + new ApiMessageAndVersion( + new ConsumerGroupMetadataKey().setGroupId("group"), + (short) 1 + ), + new ApiMessageAndVersion( + new ConsumerGroupMetadataValue().setEpoch(10), + (short) 0 + ) + ); + + assertArrayEquals( + MessageUtil.toVersionPrefixedBytes(record.key().version(), record.key().message()), + serializer.serializeKey(record) + ); + } + + @Test + public void testSerializeValue() { Review Comment: ditto on same value but different key. ########## group-coordinator/src/test/java/org/apache/kafka/coordinator/group/RecordSerdeTest.java: ########## @@ -0,0 +1,260 @@ +/* + * 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.protocol.ApiMessage; +import org.apache.kafka.common.protocol.MessageUtil; +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.coordinator.group.generated.GroupMetadataKey; +import org.apache.kafka.coordinator.group.generated.GroupMetadataValue; +import org.apache.kafka.coordinator.group.generated.OffsetCommitKey; +import org.apache.kafka.coordinator.group.generated.OffsetCommitValue; +import org.apache.kafka.coordinator.group.runtime.CoordinatorLoader; +import org.apache.kafka.server.common.ApiMessageAndVersion; +import org.junit.jupiter.api.Test; + +import java.nio.ByteBuffer; + +import static org.junit.jupiter.api.Assertions.assertArrayEquals; +import static org.junit.jupiter.api.Assertions.assertEquals; +import static org.junit.jupiter.api.Assertions.assertNull; +import static org.junit.jupiter.api.Assertions.assertThrows; +import static org.junit.jupiter.api.Assertions.assertTrue; + +public class RecordSerdeTest { + @Test + public void testSerializeKey() { + RecordSerde serializer = new RecordSerde(); + Record record = new Record( + new ApiMessageAndVersion( + new ConsumerGroupMetadataKey().setGroupId("group"), + (short) 1 + ), + new ApiMessageAndVersion( + new ConsumerGroupMetadataValue().setEpoch(10), + (short) 0 + ) + ); + + assertArrayEquals( + MessageUtil.toVersionPrefixedBytes(record.key().version(), record.key().message()), + serializer.serializeKey(record) + ); + } + + @Test + public void testSerializeValue() { + RecordSerde serializer = new RecordSerde(); + Record record = new Record( + new ApiMessageAndVersion( + new ConsumerGroupMetadataKey().setGroupId("group"), + (short) 1 + ), + new ApiMessageAndVersion( + new ConsumerGroupMetadataValue().setEpoch(10), + (short) 0 + ) + ); + + assertArrayEquals( + MessageUtil.toVersionPrefixedBytes(record.value().version(), record.value().message()), + serializer.serializeValue(record) + ); + } + + @Test + public void testSerializeNullValue() { + RecordSerde serializer = new RecordSerde(); + Record record = new Record( + new ApiMessageAndVersion( + new ConsumerGroupMetadataKey().setGroupId("group"), + (short) 1 + ), + null + ); + + assertNull(serializer.serializeValue(record)); + } + + @Test + public void testDeserialize() { + RecordSerde serDe = new RecordSerde(); Review Comment: nit: serde i see this repeated for most of the tests/methods ########## group-coordinator/src/test/java/org/apache/kafka/coordinator/group/RecordSerdeTest.java: ########## @@ -0,0 +1,260 @@ +/* + * 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.protocol.ApiMessage; +import org.apache.kafka.common.protocol.MessageUtil; +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.coordinator.group.generated.GroupMetadataKey; +import org.apache.kafka.coordinator.group.generated.GroupMetadataValue; +import org.apache.kafka.coordinator.group.generated.OffsetCommitKey; +import org.apache.kafka.coordinator.group.generated.OffsetCommitValue; +import org.apache.kafka.coordinator.group.runtime.CoordinatorLoader; +import org.apache.kafka.server.common.ApiMessageAndVersion; +import org.junit.jupiter.api.Test; + +import java.nio.ByteBuffer; + +import static org.junit.jupiter.api.Assertions.assertArrayEquals; +import static org.junit.jupiter.api.Assertions.assertEquals; +import static org.junit.jupiter.api.Assertions.assertNull; +import static org.junit.jupiter.api.Assertions.assertThrows; +import static org.junit.jupiter.api.Assertions.assertTrue; + +public class RecordSerdeTest { + @Test + public void testSerializeKey() { + RecordSerde serializer = new RecordSerde(); + Record record = new Record( + new ApiMessageAndVersion( + new ConsumerGroupMetadataKey().setGroupId("group"), + (short) 1 + ), + new ApiMessageAndVersion( + new ConsumerGroupMetadataValue().setEpoch(10), + (short) 0 + ) + ); + + assertArrayEquals( + MessageUtil.toVersionPrefixedBytes(record.key().version(), record.key().message()), + serializer.serializeKey(record) + ); + } + + @Test + public void testSerializeValue() { + RecordSerde serializer = new RecordSerde(); + Record record = new Record( + new ApiMessageAndVersion( + new ConsumerGroupMetadataKey().setGroupId("group"), + (short) 1 Review Comment: ditto on version ########## group-coordinator/src/main/java/org/apache/kafka/coordinator/group/RecordSerde.java: ########## @@ -0,0 +1,158 @@ +/* + * 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.protocol.ApiMessage; +import org.apache.kafka.common.protocol.ByteBufferAccessor; +import org.apache.kafka.common.protocol.MessageUtil; +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.coordinator.group.generated.GroupMetadataKey; +import org.apache.kafka.coordinator.group.generated.GroupMetadataValue; +import org.apache.kafka.coordinator.group.generated.OffsetCommitKey; +import org.apache.kafka.coordinator.group.generated.OffsetCommitValue; +import org.apache.kafka.coordinator.group.runtime.CoordinatorLoader; +import org.apache.kafka.coordinator.group.runtime.PartitionWriter; +import org.apache.kafka.server.common.ApiMessageAndVersion; + +import java.nio.BufferUnderflowException; +import java.nio.ByteBuffer; + +/** + * Serializer/Deserializer for {{@link Record}}. + */ +public class RecordSerde implements PartitionWriter.Serializer<Record>, CoordinatorLoader.Deserializer<Record> { + @Override + public byte[] serializeKey(Record record) { Review Comment: i'm wondering whether we should check whether the type of key and version matches the key's version. ########## group-coordinator/src/main/java/org/apache/kafka/coordinator/group/RecordSerde.java: ########## @@ -0,0 +1,158 @@ +/* + * 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.protocol.ApiMessage; +import org.apache.kafka.common.protocol.ByteBufferAccessor; +import org.apache.kafka.common.protocol.MessageUtil; +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.coordinator.group.generated.GroupMetadataKey; +import org.apache.kafka.coordinator.group.generated.GroupMetadataValue; +import org.apache.kafka.coordinator.group.generated.OffsetCommitKey; +import org.apache.kafka.coordinator.group.generated.OffsetCommitValue; +import org.apache.kafka.coordinator.group.runtime.CoordinatorLoader; +import org.apache.kafka.coordinator.group.runtime.PartitionWriter; +import org.apache.kafka.server.common.ApiMessageAndVersion; + +import java.nio.BufferUnderflowException; +import java.nio.ByteBuffer; + +/** + * Serializer/Deserializer for {{@link Record}}. + */ +public class RecordSerde implements PartitionWriter.Serializer<Record>, CoordinatorLoader.Deserializer<Record> { + @Override + public byte[] serializeKey(Record record) { + // Record does not accept a null key. + return MessageUtil.toVersionPrefixedBytes( + record.key().version(), + record.key().message() + ); + } + + @Override + public byte[] serializeValue(Record record) { + // Tombstone is represented with a null value. + if (record.value() == null) { + return null; + } else { + return MessageUtil.toVersionPrefixedBytes( + record.value().version(), + record.value().message() + ); + } + } + + @Override + public Record deserialize( + ByteBuffer keyBuffer, + ByteBuffer valueBuffer + ) throws RuntimeException { + final short recordType = readVersion(keyBuffer, "key"); + final ApiMessage keyMessage = apiMessageKeyFor(recordType); + readMessage(keyMessage, keyBuffer, recordType, "key"); + + if (valueBuffer == null) { + return new Record(new ApiMessageAndVersion(keyMessage, recordType), null); + } + + final ApiMessage valueMessage = apiMessageValueFor(recordType); + final short valueVersion = readVersion(valueBuffer, "value"); Review Comment: the value version only distinguishes the version of the value record. the key's version is also the key's record type (OffsetCommitKey == 0/1, GroupMetadataKey == 2, ...) whereas the value version is the version of the value record (OffsetCommitValue versions 0,1,2,...) ########## group-coordinator/src/test/java/org/apache/kafka/coordinator/group/RecordSerdeTest.java: ########## @@ -0,0 +1,260 @@ +/* + * 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.protocol.ApiMessage; +import org.apache.kafka.common.protocol.MessageUtil; +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.coordinator.group.generated.GroupMetadataKey; +import org.apache.kafka.coordinator.group.generated.GroupMetadataValue; +import org.apache.kafka.coordinator.group.generated.OffsetCommitKey; +import org.apache.kafka.coordinator.group.generated.OffsetCommitValue; +import org.apache.kafka.coordinator.group.runtime.CoordinatorLoader; +import org.apache.kafka.server.common.ApiMessageAndVersion; +import org.junit.jupiter.api.Test; + +import java.nio.ByteBuffer; + +import static org.junit.jupiter.api.Assertions.assertArrayEquals; +import static org.junit.jupiter.api.Assertions.assertEquals; +import static org.junit.jupiter.api.Assertions.assertNull; +import static org.junit.jupiter.api.Assertions.assertThrows; +import static org.junit.jupiter.api.Assertions.assertTrue; + +public class RecordSerdeTest { + @Test + public void testSerializeKey() { + RecordSerde serializer = new RecordSerde(); + Record record = new Record( + new ApiMessageAndVersion( + new ConsumerGroupMetadataKey().setGroupId("group"), + (short) 1 Review Comment: should this be 3? and should we test with a record with a different value message? -- This is an automated message from the Apache Git Service. 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