kafka AddPartitionsToTxnRequest 源码

  • 2022-10-20
  • 浏览 (455)

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);
    }
}

相关信息

kafka 源码目录

相关文章

kafka AbstractControlRequest 源码

kafka AbstractRequest 源码

kafka AbstractRequestResponse 源码

kafka AbstractResponse 源码

kafka AddOffsetsToTxnRequest 源码

kafka AddOffsetsToTxnResponse 源码

kafka AddPartitionsToTxnResponse 源码

kafka AllocateProducerIdsRequest 源码

kafka AllocateProducerIdsResponse 源码

kafka AlterClientQuotasRequest 源码

0  赞