kafka ElectLeadersResponse 源码
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;
}
}
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