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.stream.storage.impl.sc;
  
  import io.grpc.Channel;
  import java.util.concurrent.CompletableFuture;
  import org.apache.bookkeeper.common.concurrent.FutureUtils;
  import org.apache.bookkeeper.stream.storage.api.sc.StorageContainer;
  
  /**
   * A storage container that always responds {@link io.grpc.Status#NOT_FOUND}.
   */
  final class StorageContainer404 implements StorageContainer {
  
      static StorageContainer404 of() {
          return INSTANCE;
      }
  
      private static final StorageContainer404 INSTANCE = new StorageContainer404();
  
      private StorageContainer404() {}
  
      @Override
      public long getId() {
          return -404;
      }
  
      @Override
      public Channel getChannel() {
          return Channel404.of();
      }
  
      @Override
      public CompletableFuture<StorageContainer> start() {
          return FutureUtils.value(this);
      }
  
      @Override
      public CompletableFuture<Void> stop() {
          return FutureUtils.Void();
      }
  
      @Override
      public void close() {
          // no-op
      }
  }
  