Many resources are needed to download a project. Please understand that we have to compensate our server costs. Thank you in advance. Project price only 1 $
You can buy this project and download/modify it how often you want.
/*
* 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.OffsetFetchRequestData;
import org.apache.kafka.common.message.OffsetFetchRequestData.OffsetFetchRequestTopic;
import org.apache.kafka.common.protocol.ApiKeys;
import org.apache.kafka.common.protocol.ByteBufferAccessor;
import org.apache.kafka.common.protocol.Errors;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.nio.ByteBuffer;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Optional;
public class OffsetFetchRequest extends AbstractRequest {
private static final Logger log = LoggerFactory.getLogger(OffsetFetchRequest.class);
private static final List ALL_TOPIC_PARTITIONS = null;
private final OffsetFetchRequestData data;
public static class Builder extends AbstractRequest.Builder {
public final OffsetFetchRequestData data;
private final boolean throwOnFetchStableOffsetsUnsupported;
public Builder(String groupId,
boolean requireStable,
List partitions,
boolean throwOnFetchStableOffsetsUnsupported) {
super(ApiKeys.OFFSET_FETCH);
final List topics;
if (partitions != null) {
Map offsetFetchRequestTopicMap = new HashMap<>();
for (TopicPartition topicPartition : partitions) {
String topicName = topicPartition.topic();
OffsetFetchRequestTopic topic = offsetFetchRequestTopicMap.getOrDefault(
topicName, new OffsetFetchRequestTopic().setName(topicName));
topic.partitionIndexes().add(topicPartition.partition());
offsetFetchRequestTopicMap.put(topicName, topic);
}
topics = new ArrayList<>(offsetFetchRequestTopicMap.values());
} else {
// If passed in partition list is null, it is requesting offsets for all topic partitions.
topics = ALL_TOPIC_PARTITIONS;
}
this.data = new OffsetFetchRequestData()
.setGroupId(groupId)
.setRequireStable(requireStable)
.setTopics(topics);
this.throwOnFetchStableOffsetsUnsupported = throwOnFetchStableOffsetsUnsupported;
}
boolean isAllTopicPartitions() {
return this.data.topics() == ALL_TOPIC_PARTITIONS;
}
@Override
public OffsetFetchRequest build(short version) {
if (isAllTopicPartitions() && version < 2) {
throw new UnsupportedVersionException("The broker only supports OffsetFetchRequest " +
"v" + version + ", but we need v2 or newer to request all topic partitions.");
}
if (data.requireStable() && version < 7) {
if (throwOnFetchStableOffsetsUnsupported) {
throw new UnsupportedVersionException("Broker unexpectedly " +
"doesn't support requireStable flag on version " + version);
} else {
log.trace("Fallback the requireStable flag to false as broker " +
"only supports OffsetFetchRequest version {}. Need " +
"v7 or newer to enable this feature", version);
return new OffsetFetchRequest(data.setRequireStable(false), version);
}
}
return new OffsetFetchRequest(data, version);
}
@Override
public String toString() {
return data.toString();
}
}
public List partitions() {
if (isAllPartitions()) {
return null;
}
List partitions = new ArrayList<>();
for (OffsetFetchRequestTopic topic : data.topics()) {
for (Integer partitionIndex : topic.partitionIndexes()) {
partitions.add(new TopicPartition(topic.name(), partitionIndex));
}
}
return partitions;
}
public String groupId() {
return data.groupId();
}
public boolean requireStable() {
return data.requireStable();
}
private OffsetFetchRequest(OffsetFetchRequestData data, short version) {
super(ApiKeys.OFFSET_FETCH, version);
this.data = data;
}
public OffsetFetchResponse getErrorResponse(Errors error) {
return getErrorResponse(AbstractResponse.DEFAULT_THROTTLE_TIME, error);
}
public OffsetFetchResponse getErrorResponse(int throttleTimeMs, Errors error) {
Map responsePartitions = new HashMap<>();
if (version() < 2) {
OffsetFetchResponse.PartitionData partitionError = new OffsetFetchResponse.PartitionData(
OffsetFetchResponse.INVALID_OFFSET,
Optional.empty(),
OffsetFetchResponse.NO_METADATA,
error);
for (OffsetFetchRequestTopic topic : this.data.topics()) {
for (int partitionIndex : topic.partitionIndexes()) {
responsePartitions.put(
new TopicPartition(topic.name(), partitionIndex), partitionError);
}
}
}
if (version() >= 3) {
return new OffsetFetchResponse(throttleTimeMs, error, responsePartitions);
} else {
return new OffsetFetchResponse(error, responsePartitions);
}
}
@Override
public OffsetFetchResponse getErrorResponse(int throttleTimeMs, Throwable e) {
return getErrorResponse(throttleTimeMs, Errors.forException(e));
}
public static OffsetFetchRequest parse(ByteBuffer buffer, short version) {
return new OffsetFetchRequest(new OffsetFetchRequestData(new ByteBufferAccessor(buffer), version), version);
}
public boolean isAllPartitions() {
return data.topics() == ALL_TOPIC_PARTITIONS;
}
@Override
public OffsetFetchRequestData data() {
return data;
}
}
