kafka DeleteTopicsRequest 源码
kafka DeleteTopicsRequest 代码
文件路径:/clients/src/main/java/org/apache/kafka/common/requests/DeleteTopicsRequest.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.Uuid;
import org.apache.kafka.common.message.DeleteTopicsRequestData;
import org.apache.kafka.common.message.DeleteTopicsResponseData;
import org.apache.kafka.common.message.DeleteTopicsResponseData.DeletableTopicResult;
import org.apache.kafka.common.message.DeleteTopicsRequestData.DeleteTopicState;
import org.apache.kafka.common.protocol.ApiKeys;
import org.apache.kafka.common.protocol.ByteBufferAccessor;
import java.nio.ByteBuffer;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.stream.Collectors;
public class DeleteTopicsRequest extends AbstractRequest {
public static class Builder extends AbstractRequest.Builder<DeleteTopicsRequest> {
private DeleteTopicsRequestData data;
public Builder(DeleteTopicsRequestData data) {
super(ApiKeys.DELETE_TOPICS);
this.data = data;
}
@Override
public DeleteTopicsRequest build(short version) {
if (version >= 6 && !data.topicNames().isEmpty()) {
data.setTopics(groupByTopic(data.topicNames()));
}
return new DeleteTopicsRequest(data, version);
}
private List<DeleteTopicState> groupByTopic(List<String> topics) {
List<DeleteTopicState> topicStates = new ArrayList<>();
for (String topic : topics) {
topicStates.add(new DeleteTopicState().setName(topic));
}
return topicStates;
}
@Override
public String toString() {
return data.toString();
}
}
private DeleteTopicsRequestData data;
private DeleteTopicsRequest(DeleteTopicsRequestData data, short version) {
super(ApiKeys.DELETE_TOPICS, version);
this.data = data;
}
@Override
public DeleteTopicsRequestData data() {
return data;
}
@Override
public AbstractResponse getErrorResponse(int throttleTimeMs, Throwable e) {
DeleteTopicsResponseData response = new DeleteTopicsResponseData();
if (version() >= 1) {
response.setThrottleTimeMs(throttleTimeMs);
}
ApiError apiError = ApiError.fromThrowable(e);
for (DeleteTopicState topic : topics()) {
response.responses().add(new DeletableTopicResult()
.setName(topic.name())
.setTopicId(topic.topicId())
.setErrorCode(apiError.error().code()));
}
return new DeleteTopicsResponse(response);
}
public List<String> topicNames() {
if (version() >= 6)
return data.topics().stream().map(topic -> topic.name()).collect(Collectors.toList());
return data.topicNames();
}
public int numberOfTopics() {
if (version() >= 6)
return data.topics().size();
return data.topicNames().size();
}
public List<Uuid> topicIds() {
if (version() >= 6)
return data.topics().stream().map(topic -> topic.topicId()).collect(Collectors.toList());
return Collections.emptyList();
}
public List<DeleteTopicState> topics() {
if (version() >= 6)
return data.topics();
return data.topicNames().stream().map(name -> new DeleteTopicState().setName(name)).collect(Collectors.toList());
}
public static DeleteTopicsRequest parse(ByteBuffer buffer, short version) {
return new DeleteTopicsRequest(new DeleteTopicsRequestData(new ByteBufferAccessor(buffer), version), version);
}
}
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