content: /*
   * Copyright 2010 Proofpoint, Inc.
   *
   * Licensed 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 io.airlift.discovery.server;
  
  import com.fasterxml.jackson.annotation.JsonCreator;
  import com.fasterxml.jackson.annotation.JsonValue;
  
  import com.google.errorprone.annotations.Immutable;
  
  import java.util.UUID;
  
  import static com.google.common.base.Preconditions.checkArgument;
  import static com.google.common.base.Preconditions.checkNotNull;
  import static java.nio.charset.StandardCharsets.UTF_8;
  
  @Immutable
  public final class Id<T>
  {
      private final String id;
  
      @JsonCreator
      public static <T> Id<T> valueOf(String id)
      {
          return new Id<>(id);
      }
  
      public static <T> Id<T> random()
      {
          return new Id<>(UUID.randomUUID().toString());
      }
  
      private Id(String id)
      {
          checkNotNull(id, "id is null");
          checkArgument(!id.isEmpty(), "id is empty");
          this.id = id;
      }
  
      @JsonValue
      public String get()
      {
          return id;
      }
  
      @Override
      public boolean equals(Object o)
      {
          if (this == o) {
              return true;
          }
          if (o == null || getClass() != o.getClass()) {
              return false;
          }
          return id.equals(((Id<?>) o).id);
      }
  
      @Override
      public int hashCode()
      {
          return id.hashCode();
      }
  
      @Override
      public String toString()
      {
          return id;
      }
  
      public byte[] getBytes()
      {
          return toString().getBytes(UTF_8);
      }
  }
  