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.config;
  
  import java.util.Arrays;
  import java.util.Collections;
  import java.util.Map;
  import java.util.Objects;
  import java.util.function.Function;
  import java.util.stream.Collectors;
  
  /**
   * A class representing resources that have configs.
   */
  public final class ConfigResource {
  
      /**
       * Type of resource.
       */
      public enum Type {
          GROUP((byte) 32),
          CLIENT_METRICS((byte) 16),
          BROKER_LOGGER((byte) 8),
          BROKER((byte) 4),
          TOPIC((byte) 2),
          UNKNOWN((byte) 0);
  
          private static final Map<Byte, Type> TYPES = Collections.unmodifiableMap(
              Arrays.stream(values()).collect(Collectors.toMap(Type::id, Function.identity()))
          );
  
          private final byte id;
  
          Type(final byte id) {
              this.id = id;
          }
  
          public byte id() {
              return id;
          }
  
          public static Type forId(final byte id) {
              return TYPES.getOrDefault(id, UNKNOWN);
          }
      }
  
      private final Type type;
      private final String name;
  
      /**
       * Create an instance of this class with the provided parameters.
       *
       * @param type a non-null resource type
       * @param name a non-null resource name
       */
      public ConfigResource(Type type, String name) {
          Objects.requireNonNull(type, "type should not be null");
          Objects.requireNonNull(name, "name should not be null");
          this.type = type;
          this.name = name;
      }
  
      /**
       * Return the resource type.
       */
      public Type type() {
          return type;
      }
  
      /**
       * Return the resource name.
       */
      public String name() {
          return name;
      }
  
      /**
       * Returns true if this is the default resource of a resource type.
       * Resource name is empty for the default resource.
       */
      public boolean isDefault() {
          return name.isEmpty();
      }
  
      @Override
      public boolean equals(Object o) {
          if (this == o)
              return true;
          if (o == null || getClass() != o.getClass())
              return false;
  
          ConfigResource that = (ConfigResource) o;
  
          return type == that.type && name.equals(that.name);
      }
  
      @Override
      public int hashCode() {
          int result = type.hashCode();
          result = 31 * result + name.hashCode();
          return result;
      }
  
      @Override
      public String toString() {
          return "ConfigResource(type=" + type + ", name='" + name + "')";
      }
  }
  