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.metadata;
  
  import java.util.Arrays;
  import java.util.Map;
  import java.util.Optional;
  import java.util.function.Function;
  import java.util.stream.Collectors;
  
  public enum BrokerRegistrationInControlledShutdownChange {
      // Note that Optional.of(true) is not a valid state change here. The only
      // way to leave the in controlled shutdown state is by registering the
      // broker with a new incarnation id.
      NONE(0, Optional.empty()),
      IN_CONTROLLED_SHUTDOWN(1, Optional.of(true));
  
      private final byte value;
  
      private final Optional<Boolean> asBoolean;
  
      private static final Map<Byte, BrokerRegistrationInControlledShutdownChange> VALUE_TO_ENUM =
          Arrays.stream(BrokerRegistrationInControlledShutdownChange.values()).
              collect(Collectors.toMap(v -> v.value(), Function.identity()));
  
      public static Optional<BrokerRegistrationInControlledShutdownChange> fromValue(byte value) {
          return Optional.ofNullable(VALUE_TO_ENUM.get(value));
      }
  
      BrokerRegistrationInControlledShutdownChange(int value, Optional<Boolean> asBoolean) {
          this.value = (byte) value;
          this.asBoolean = asBoolean;
      }
  
      public Optional<Boolean> asBoolean() {
          return asBoolean;
      }
  
      public byte value() {
          return value;
      }
  }
  