kafka OffsetCommitRequest 源码
kafka OffsetCommitRequest 代码
文件路径:/clients/src/main/java/org/apache/kafka/common/requests/OffsetCommitRequest.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.errors.UnsupportedVersionException;
import org.apache.kafka.common.message.OffsetCommitRequestData;
import org.apache.kafka.common.message.OffsetCommitRequestData.OffsetCommitRequestTopic;
import org.apache.kafka.common.message.OffsetCommitResponseData;
import org.apache.kafka.common.message.OffsetCommitResponseData.OffsetCommitResponsePartition;
import org.apache.kafka.common.message.OffsetCommitResponseData.OffsetCommitResponseTopic;
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.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
public class OffsetCommitRequest extends AbstractRequest {
// default values for the current version
public static final int DEFAULT_GENERATION_ID = -1;
public static final String DEFAULT_MEMBER_ID = "";
public static final long DEFAULT_RETENTION_TIME = -1L;
// default values for old versions, will be removed after these versions are no longer supported
public static final long DEFAULT_TIMESTAMP = -1L; // for V0, V1
private final OffsetCommitRequestData data;
public static class Builder extends AbstractRequest.Builder<OffsetCommitRequest> {
private final OffsetCommitRequestData data;
public Builder(OffsetCommitRequestData data) {
super(ApiKeys.OFFSET_COMMIT);
this.data = data;
}
@Override
public OffsetCommitRequest build(short version) {
if (data.groupInstanceId() != null && version < 7) {
throw new UnsupportedVersionException("The broker offset commit protocol version " +
version + " does not support usage of config group.instance.id.");
}
return new OffsetCommitRequest(data, version);
}
@Override
public String toString() {
return data.toString();
}
}
public OffsetCommitRequest(OffsetCommitRequestData data, short version) {
super(ApiKeys.OFFSET_COMMIT, version);
this.data = data;
}
@Override
public OffsetCommitRequestData data() {
return data;
}
public Map<TopicPartition, Long> offsets() {
Map<TopicPartition, Long> offsets = new HashMap<>();
for (OffsetCommitRequestTopic topic : data.topics()) {
for (OffsetCommitRequestData.OffsetCommitRequestPartition partition : topic.partitions()) {
offsets.put(new TopicPartition(topic.name(), partition.partitionIndex()),
partition.committedOffset());
}
}
return offsets;
}
public static List<OffsetCommitResponseTopic> getErrorResponseTopics(
List<OffsetCommitRequestTopic> requestTopics,
Errors e) {
List<OffsetCommitResponseTopic> responseTopicData = new ArrayList<>();
for (OffsetCommitRequestTopic entry : requestTopics) {
List<OffsetCommitResponsePartition> responsePartitions =
new ArrayList<>();
for (OffsetCommitRequestData.OffsetCommitRequestPartition requestPartition : entry.partitions()) {
responsePartitions.add(new OffsetCommitResponsePartition()
.setPartitionIndex(requestPartition.partitionIndex())
.setErrorCode(e.code()));
}
responseTopicData.add(new OffsetCommitResponseTopic()
.setName(entry.name())
.setPartitions(responsePartitions)
);
}
return responseTopicData;
}
@Override
public OffsetCommitResponse getErrorResponse(int throttleTimeMs, Throwable e) {
List<OffsetCommitResponseTopic>
responseTopicData = getErrorResponseTopics(data.topics(), Errors.forException(e));
return new OffsetCommitResponse(new OffsetCommitResponseData()
.setTopics(responseTopicData)
.setThrottleTimeMs(throttleTimeMs));
}
public static OffsetCommitRequest parse(ByteBuffer buffer, short version) {
return new OffsetCommitRequest(new OffsetCommitRequestData(new ByteBufferAccessor(buffer), version), version);
}
}
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