content: /*
   * 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.Readable;
  
  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.emptySet(),
              throttleTimeMs
          );
      }
  
      @Override
      public UpdateFeaturesRequestData data() {
          return data;
      }
  
      public static UpdateFeaturesRequest parse(Readable readable, short version) {
          return new UpdateFeaturesRequest(new UpdateFeaturesRequestData(readable, version), version);
      }
  }
  