kafka AddPartitionsToTxnRequest 源码
kafka AddPartitionsToTxnRequest 代码
文件路径:/clients/src/main/java/org/apache/kafka/common/requests/AddPartitionsToTxnRequest.java
/*
* 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.common.requests;
import org.apache.kafka.common.TopicPartition;
import org.apache.kafka.common.message.AddPartitionsToTxnRequestData;
import org.apache.kafka.common.message.AddPartitionsToTxnRequestData.AddPartitionsToTxnTopic;
import org.apache.kafka.common.message.AddPartitionsToTxnRequestData.AddPartitionsToTxnTopicCollection;
import org.apache.kafka.common.protocol.ApiKeys;
import org.apache.kafka.common.protocol.ByteBufferAccessor;
import org.apache.kafka.common.protocol.Errors;
import java.nio.ByteBuffer;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
public class AddPartitionsToTxnRequest extends AbstractRequest {
private final AddPartitionsToTxnRequestData data;
private List<TopicPartition> cachedPartitions = null;
public static class Builder extends AbstractRequest.Builder<AddPartitionsToTxnRequest> {
public final AddPartitionsToTxnRequestData data;
public Builder(final AddPartitionsToTxnRequestData data) {
super(ApiKeys.ADD_PARTITIONS_TO_TXN);
this.data = data;
}
public Builder(final String transactionalId,
final long producerId,
final short producerEpoch,
final List<TopicPartition> partitions) {
super(ApiKeys.ADD_PARTITIONS_TO_TXN);
Map<String, List<Integer>> partitionMap = new HashMap<>();
for (TopicPartition topicPartition : partitions) {
String topicName = topicPartition.topic();
partitionMap.compute(topicName, (key, subPartitions) -> {
if (subPartitions == null) {
subPartitions = new ArrayList<>();
}
subPartitions.add(topicPartition.partition());
return subPartitions;
});
}
AddPartitionsToTxnTopicCollection topics = new AddPartitionsToTxnTopicCollection();
for (Map.Entry<String, List<Integer>> partitionEntry : partitionMap.entrySet()) {
topics.add(new AddPartitionsToTxnTopic()
.setName(partitionEntry.getKey())
.setPartitions(partitionEntry.getValue()));
}
this.data = new AddPartitionsToTxnRequestData()
.setTransactionalId(transactionalId)
.setProducerId(producerId)
.setProducerEpoch(producerEpoch)
.setTopics(topics);
}
@Override
public AddPartitionsToTxnRequest build(short version) {
return new AddPartitionsToTxnRequest(data, version);
}
static List<TopicPartition> getPartitions(AddPartitionsToTxnRequestData data) {
List<TopicPartition> partitions = new ArrayList<>();
for (AddPartitionsToTxnTopic topicCollection : data.topics()) {
for (Integer partition : topicCollection.partitions()) {
partitions.add(new TopicPartition(topicCollection.name(), partition));
}
}
return partitions;
}
@Override
public String toString() {
return data.toString();
}
}
public AddPartitionsToTxnRequest(final AddPartitionsToTxnRequestData data, short version) {
super(ApiKeys.ADD_PARTITIONS_TO_TXN, version);
this.data = data;
}
public List<TopicPartition> partitions() {
if (cachedPartitions != null) {
return cachedPartitions;
}
cachedPartitions = Builder.getPartitions(data);
return cachedPartitions;
}
@Override
public AddPartitionsToTxnRequestData data() {
return data;
}
@Override
public AddPartitionsToTxnResponse getErrorResponse(int throttleTimeMs, Throwable e) {
final HashMap<TopicPartition, Errors> errors = new HashMap<>();
for (TopicPartition partition : partitions()) {
errors.put(partition, Errors.forException(e));
}
return new AddPartitionsToTxnResponse(throttleTimeMs, errors);
}
public static AddPartitionsToTxnRequest parse(ByteBuffer buffer, short version) {
return new AddPartitionsToTxnRequest(new AddPartitionsToTxnRequestData(new ByteBufferAccessor(buffer), version), version);
}
}
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