kafka UpdateFeaturesRequest 源码
kafka UpdateFeaturesRequest 代码
文件路径:/clients/src/main/java/org/apache/kafka/common/requests/UpdateFeaturesRequest.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.clients.admin.FeatureUpdate;
import org.apache.kafka.common.message.UpdateFeaturesRequestData;
import org.apache.kafka.common.protocol.ApiKeys;
import org.apache.kafka.common.protocol.ByteBufferAccessor;
import java.nio.ByteBuffer;
import java.util.Collection;
import java.util.Collections;
import java.util.stream.Collectors;
public class UpdateFeaturesRequest extends AbstractRequest {
public static class FeatureUpdateItem {
private final String featureName;
private final short featureLevel;
private final FeatureUpdate.UpgradeType upgradeType;
public FeatureUpdateItem(String featureName, short featureLevel, FeatureUpdate.UpgradeType upgradeType) {
this.featureName = featureName;
this.featureLevel = featureLevel;
this.upgradeType = upgradeType;
}
public String feature() {
return featureName;
}
public short versionLevel() {
return featureLevel;
}
public FeatureUpdate.UpgradeType upgradeType() {
return upgradeType;
}
public boolean isDeleteRequest() {
return featureLevel < 1 && !upgradeType.equals(FeatureUpdate.UpgradeType.UPGRADE);
}
}
public static class Builder extends AbstractRequest.Builder<UpdateFeaturesRequest> {
private final UpdateFeaturesRequestData data;
public Builder(UpdateFeaturesRequestData data) {
super(ApiKeys.UPDATE_FEATURES);
this.data = data;
}
@Override
public UpdateFeaturesRequest build(short version) {
return new UpdateFeaturesRequest(data, version);
}
@Override
public String toString() {
return data.toString();
}
}
private final UpdateFeaturesRequestData data;
public UpdateFeaturesRequest(UpdateFeaturesRequestData data, short version) {
super(ApiKeys.UPDATE_FEATURES, version);
this.data = data;
}
public FeatureUpdateItem getFeature(String name) {
UpdateFeaturesRequestData.FeatureUpdateKey update = data.featureUpdates().find(name);
if (super.version() == 0) {
if (update.allowDowngrade()) {
return new FeatureUpdateItem(update.feature(), update.maxVersionLevel(), FeatureUpdate.UpgradeType.SAFE_DOWNGRADE);
} else {
return new FeatureUpdateItem(update.feature(), update.maxVersionLevel(), FeatureUpdate.UpgradeType.UPGRADE);
}
} else {
return new FeatureUpdateItem(update.feature(), update.maxVersionLevel(), FeatureUpdate.UpgradeType.fromCode(update.upgradeType()));
}
}
public Collection<FeatureUpdateItem> featureUpdates() {
return data.featureUpdates().stream()
.map(update -> getFeature(update.feature()))
.collect(Collectors.toList());
}
@Override
public UpdateFeaturesResponse getErrorResponse(int throttleTimeMs, Throwable e) {
return UpdateFeaturesResponse.createWithErrors(
ApiError.fromThrowable(e),
Collections.emptyMap(),
throttleTimeMs
);
}
@Override
public UpdateFeaturesRequestData data() {
return data;
}
public static UpdateFeaturesRequest parse(ByteBuffer buffer, short version) {
return new UpdateFeaturesRequest(new UpdateFeaturesRequestData(new ByteBufferAccessor(buffer), version), version);
}
}
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