org.apache.kafka.common.requests.DescribeQuorumResponse Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of kafka-client Show documentation
There is a newer version: 1.2.2.1-jre17
/*
 * 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.DescribeQuorumResponseData;
import org.apache.kafka.common.message.DescribeQuorumResponseData.ReplicaState;
import org.apache.kafka.common.protocol.ApiKeys;
import org.apache.kafka.common.protocol.Errors;
import org.apache.kafka.common.protocol.types.Struct;

import java.nio.ByteBuffer;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * Possible error codes.
 *
 * Top level errors:
 * - {@link Errors#CLUSTER_AUTHORIZATION_FAILED}
 * - {@link Errors#BROKER_NOT_AVAILABLE}
 *
 * Partition level errors:
 * - {@link Errors#INVALID_REQUEST}
 * - {@link Errors#UNKNOWN_TOPIC_OR_PARTITION}
 */
public class DescribeQuorumResponse extends AbstractResponse {
    public final DescribeQuorumResponseData data;

    public DescribeQuorumResponse(DescribeQuorumResponseData data) {
        this.data = data;
    }

    public DescribeQuorumResponse(Struct struct, short version) {
        this.data = new DescribeQuorumResponseData(struct, version);
    }

    @Override
    protected Struct toStruct(short version) {
        return data.toStruct(version);
    }

    @Override
    public Map errorCounts() {
        Map errors = new HashMap<>();

        Errors topLevelError = Errors.forCode(data.errorCode());
        if (topLevelError != Errors.NONE) {
            errors.put(topLevelError, 1);
        }

        for (DescribeQuorumResponseData.TopicData topicResponse : data.topics()) {
            for (DescribeQuorumResponseData.PartitionData partitionResponse : topicResponse.partitions()) {
                errors.compute(Errors.forCode(partitionResponse.errorCode()),
                    (error, count) -> count == null ? 1 : count + 1);
            }
        }
        return errors;
    }

    public static DescribeQuorumResponseData singletonResponse(TopicPartition topicPartition,
                                                               int leaderId,
                                                               int leaderEpoch,
                                                               long highWatermark,
                                                               List voterStates,
                                                               List observerStates) {
        return new DescribeQuorumResponseData()
            .setTopics(Collections.singletonList(new DescribeQuorumResponseData.TopicData()
                .setTopicName(topicPartition.topic())
                .setPartitions(Collections.singletonList(new DescribeQuorumResponseData.PartitionData()
                    .setErrorCode(Errors.NONE.code())
                    .setLeaderId(leaderId)
                    .setLeaderEpoch(leaderEpoch)
                    .setHighWatermark(highWatermark)
                    .setCurrentVoters(voterStates)
                    .setObservers(observerStates)))));
    }

    public static DescribeQuorumResponse parse(ByteBuffer buffer, short version) {
        return new DescribeQuorumResponse(ApiKeys.DESCRIBE_QUORUM.responseSchema(version).read(buffer), version);
    }
}