content: /*
   * 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 org.apache.bookkeeper.stream.server.service;
  
  import java.io.IOException;
  import java.util.function.Supplier;
  import lombok.extern.slf4j.Slf4j;
  import org.apache.bookkeeper.common.component.AbstractLifecycleComponent;
  import org.apache.bookkeeper.stats.StatsLogger;
  import org.apache.bookkeeper.stream.storage.StorageContainerStoreBuilder;
  import org.apache.bookkeeper.stream.storage.api.StorageContainerStore;
  import org.apache.bookkeeper.stream.storage.conf.StorageConfiguration;
  
  /**
   * Service to run the storage {@link StorageContainerStore}.
   */
  @Slf4j
  public class StorageService
      extends AbstractLifecycleComponent<StorageConfiguration>
      implements Supplier<StorageContainerStore> {
  
      private final StorageContainerStoreBuilder storeBuilder;
      private StorageContainerStore store;
  
      public StorageService(StorageConfiguration conf,
                            StorageContainerStoreBuilder storeBuilder,
                            StatsLogger statsLogger) {
          super("storage-service", conf, statsLogger);
          this.storeBuilder = storeBuilder;
      }
  
      @Override
      protected void doStart() {
          store = storeBuilder.build();
          store.start();
      }
  
      @Override
      protected void doStop() {
          store.stop();
      }
  
      @Override
      protected void doClose() throws IOException {
          if (null != store) {
              store.close();
          }
      }
  
      @Override
      public StorageContainerStore get() {
          return store;
      }
  }
  