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.common.message.DescribeClientQuotasRequestData;
  import org.apache.kafka.common.message.DescribeClientQuotasRequestData.ComponentData;
  import org.apache.kafka.common.message.DescribeClientQuotasResponseData;
  import org.apache.kafka.common.protocol.ApiKeys;
  import org.apache.kafka.common.protocol.Readable;
  import org.apache.kafka.common.quota.ClientQuotaFilter;
  import org.apache.kafka.common.quota.ClientQuotaFilterComponent;
  
  import java.util.ArrayList;
  import java.util.List;
  
  public class DescribeClientQuotasRequest extends AbstractRequest {
      // These values must not change.
      public static final byte MATCH_TYPE_EXACT = 0;
      public static final byte MATCH_TYPE_DEFAULT = 1;
      public static final byte MATCH_TYPE_SPECIFIED = 2;
  
      public static class Builder extends AbstractRequest.Builder<DescribeClientQuotasRequest> {
  
          private final DescribeClientQuotasRequestData data;
  
          public Builder(ClientQuotaFilter filter) {
              super(ApiKeys.DESCRIBE_CLIENT_QUOTAS);
  
              List<ComponentData> componentData = new ArrayList<>(filter.components().size());
              for (ClientQuotaFilterComponent component : filter.components()) {
                  ComponentData fd = new ComponentData().setEntityType(component.entityType());
                  if (component.match() == null) {
                      fd.setMatchType(MATCH_TYPE_SPECIFIED);
                      fd.setMatch(null);
                  } else if (component.match().isPresent()) {
                      fd.setMatchType(MATCH_TYPE_EXACT);
                      fd.setMatch(component.match().get());
                  } else {
                      fd.setMatchType(MATCH_TYPE_DEFAULT);
                      fd.setMatch(null);
                  }
                  componentData.add(fd);
              }
              this.data = new DescribeClientQuotasRequestData()
                  .setComponents(componentData)
                  .setStrict(filter.strict());
          }
  
          @Override
          public DescribeClientQuotasRequest build(short version) {
              return new DescribeClientQuotasRequest(data, version);
          }
  
          @Override
          public String toString() {
              return data.toString();
          }
      }
  
      private final DescribeClientQuotasRequestData data;
  
      public DescribeClientQuotasRequest(DescribeClientQuotasRequestData data, short version) {
          super(ApiKeys.DESCRIBE_CLIENT_QUOTAS, version);
          this.data = data;
      }
  
      public ClientQuotaFilter filter() {
          List<ClientQuotaFilterComponent> components = new ArrayList<>(data.components().size());
          for (ComponentData componentData : data.components()) {
              ClientQuotaFilterComponent component;
              switch (componentData.matchType()) {
                  case MATCH_TYPE_EXACT:
                      component = ClientQuotaFilterComponent.ofEntity(componentData.entityType(), componentData.match());
                      break;
                  case MATCH_TYPE_DEFAULT:
                      component = ClientQuotaFilterComponent.ofDefaultEntity(componentData.entityType());
                      break;
                  case MATCH_TYPE_SPECIFIED:
                      component = ClientQuotaFilterComponent.ofEntityType(componentData.entityType());
                      break;
                  default:
                      throw new IllegalArgumentException("Unexpected match type: " + componentData.matchType());
              }
              components.add(component);
          }
          if (data.strict()) {
              return ClientQuotaFilter.containsOnly(components);
          } else {
              return ClientQuotaFilter.contains(components);
          }
      }
  
      @Override
      public DescribeClientQuotasRequestData data() {
          return data;
      }
  
      @Override
      public DescribeClientQuotasResponse getErrorResponse(int throttleTimeMs, Throwable e) {
          ApiError error = ApiError.fromThrowable(e);
          return new DescribeClientQuotasResponse(new DescribeClientQuotasResponseData()
              .setThrottleTimeMs(throttleTimeMs)
              .setErrorCode(error.error().code())
              .setErrorMessage(error.message())
              .setEntries(null));
      }
  
      public static DescribeClientQuotasRequest parse(Readable readable, short version) {
          return new DescribeClientQuotasRequest(new DescribeClientQuotasRequestData(readable, version),
              version);
      }
  
  }
  