kafka LeaderAndIsrResponse 源码
kafka LeaderAndIsrResponse 代码
文件路径:/clients/src/main/java/org/apache/kafka/common/requests/LeaderAndIsrResponse.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.Uuid;
import org.apache.kafka.common.message.LeaderAndIsrResponseData;
import org.apache.kafka.common.message.LeaderAndIsrResponseData.LeaderAndIsrTopicError;
import org.apache.kafka.common.message.LeaderAndIsrResponseData.LeaderAndIsrTopicErrorCollection;
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.Collections;
import java.util.HashMap;
import java.util.Map;
public class LeaderAndIsrResponse extends AbstractResponse {
/**
* Possible error code:
*
* STALE_CONTROLLER_EPOCH (11)
* STALE_BROKER_EPOCH (77)
*/
private final LeaderAndIsrResponseData data;
private final short version;
public LeaderAndIsrResponse(LeaderAndIsrResponseData data, short version) {
super(ApiKeys.LEADER_AND_ISR);
this.data = data;
this.version = version;
}
public LeaderAndIsrTopicErrorCollection topics() {
return this.data.topics();
}
public Errors error() {
return Errors.forCode(data.errorCode());
}
@Override
public Map<Errors, Integer> errorCounts() {
Errors error = error();
if (error != Errors.NONE) {
// Minor optimization since the top-level error applies to all partitions
if (version < 5)
return Collections.singletonMap(error, data.partitionErrors().size() + 1);
return Collections.singletonMap(error,
data.topics().stream().mapToInt(t -> t.partitionErrors().size()).sum() + 1);
}
Map<Errors, Integer> errors;
if (version < 5)
errors = errorCounts(data.partitionErrors().stream().map(l -> Errors.forCode(l.errorCode())));
else
errors = errorCounts(data.topics().stream().flatMap(t -> t.partitionErrors().stream()).map(l ->
Errors.forCode(l.errorCode())));
updateErrorCounts(errors, Errors.NONE);
return errors;
}
public Map<TopicPartition, Errors> partitionErrors(Map<Uuid, String> topicNames) {
Map<TopicPartition, Errors> errors = new HashMap<>();
if (version < 5) {
data.partitionErrors().forEach(partition ->
errors.put(new TopicPartition(partition.topicName(), partition.partitionIndex()),
Errors.forCode(partition.errorCode())));
} else {
for (LeaderAndIsrTopicError topic : data.topics()) {
String topicName = topicNames.get(topic.topicId());
if (topicName != null) {
topic.partitionErrors().forEach(partition ->
errors.put(new TopicPartition(topicName, partition.partitionIndex()),
Errors.forCode(partition.errorCode())));
}
}
}
return errors;
}
@Override
public int throttleTimeMs() {
return DEFAULT_THROTTLE_TIME;
}
@Override
public void maybeSetThrottleTimeMs(int throttleTimeMs) {
// Not supported by the response schema
}
public static LeaderAndIsrResponse parse(ByteBuffer buffer, short version) {
return new LeaderAndIsrResponse(new LeaderAndIsrResponseData(new ByteBufferAccessor(buffer), version), version);
}
@Override
public LeaderAndIsrResponseData data() {
return data;
}
@Override
public String toString() {
return data.toString();
}
}
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