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.bookkeeper.statelib.api;
  
  import java.util.concurrent.CompletableFuture;
  import org.apache.bookkeeper.common.annotation.InterfaceAudience.Public;
  import org.apache.bookkeeper.common.annotation.InterfaceStability.Evolving;
  import org.apache.bookkeeper.common.concurrent.FutureUtils;
  
  /**
   * A asynchronous state store that holds the states for stateful applications.
   */
  @Public
  @Evolving
  public interface AsyncStateStore extends AutoCloseable {
  
      /**
       * Returns the name of the state store.
       *
       * @return the name of the state store.
       */
      String name();
  
      /**
       * Returns the spec of the state store.
       *
       * @return the spec of the state store.
       */
      StateStoreSpec spec();
  
      /**
       * Initialize the state store.
       */
      CompletableFuture<Void> init(StateStoreSpec spec);
  
      /**
       * Close the state store in an asynchronous way.
       */
      CompletableFuture<Void> closeAsync();
  
      @Override
      default void close() {
          try {
              FutureUtils.result(closeAsync());
          } catch (Exception e) {
              // no-op
          }
      }
  
  }
  