kafka ElectLeadersResponse 源码

  • 2022-10-20
  • 浏览 (391)

kafka ElectLeadersResponse 代码

文件路径:/clients/src/main/java/org/apache/kafka/common/requests/ElectLeadersResponse.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 java.nio.ByteBuffer;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Optional;

import org.apache.kafka.common.TopicPartition;
import org.apache.kafka.common.message.ElectLeadersResponseData;
import org.apache.kafka.common.protocol.ByteBufferAccessor;
import org.apache.kafka.common.message.ElectLeadersResponseData.ReplicaElectionResult;
import org.apache.kafka.common.protocol.ApiKeys;
import org.apache.kafka.common.protocol.Errors;

public class ElectLeadersResponse extends AbstractResponse {

    private final ElectLeadersResponseData data;

    public ElectLeadersResponse(ElectLeadersResponseData data) {
        super(ApiKeys.ELECT_LEADERS);
        this.data = data;
    }

    public ElectLeadersResponse(
            int throttleTimeMs,
            short errorCode,
            List<ReplicaElectionResult> electionResults,
            short version) {
        super(ApiKeys.ELECT_LEADERS);
        this.data = new ElectLeadersResponseData();
        data.setThrottleTimeMs(throttleTimeMs);
        if (version >= 1)
            data.setErrorCode(errorCode);
        data.setReplicaElectionResults(electionResults);
    }

    @Override
    public ElectLeadersResponseData data() {
        return data;
    }

    @Override
    public int throttleTimeMs() {
        return data.throttleTimeMs();
    }

    @Override
    public void maybeSetThrottleTimeMs(int throttleTimeMs) {
        data.setThrottleTimeMs(throttleTimeMs);
    }

    @Override
    public Map<Errors, Integer> errorCounts() {
        HashMap<Errors, Integer> counts = new HashMap<>();
        updateErrorCounts(counts, Errors.forCode(data.errorCode()));
        data.replicaElectionResults().forEach(result ->
            result.partitionResult().forEach(partitionResult ->
                updateErrorCounts(counts, Errors.forCode(partitionResult.errorCode()))
            )
        );
        return counts;
    }

    public static ElectLeadersResponse parse(ByteBuffer buffer, short version) {
        return new ElectLeadersResponse(new ElectLeadersResponseData(new ByteBufferAccessor(buffer), version));
    }

    @Override
    public boolean shouldClientThrottle(short version) {
        return true;
    }

    public static Map<TopicPartition, Optional<Throwable>> electLeadersResult(ElectLeadersResponseData data) {
        Map<TopicPartition, Optional<Throwable>> map = new HashMap<>();

        for (ElectLeadersResponseData.ReplicaElectionResult topicResults : data.replicaElectionResults()) {
            for (ElectLeadersResponseData.PartitionResult partitionResult : topicResults.partitionResult()) {
                Optional<Throwable> value = Optional.empty();
                Errors error = Errors.forCode(partitionResult.errorCode());
                if (error != Errors.NONE) {
                    value = Optional.of(error.exception(partitionResult.errorMessage()));
                }

                map.put(new TopicPartition(topicResults.topic(), partitionResult.partitionId()),
                        value);
            }
        }

        return map;
    }
}

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 AddPartitionsToTxnRequest 源码

kafka AddPartitionsToTxnResponse 源码

kafka AllocateProducerIdsRequest 源码

kafka AllocateProducerIdsResponse 源码

0  赞