content: /*
   * The Alluxio Open Foundation licenses this work under the Apache License, version 2.0
   * (the "License"). You may not use this work except in compliance with the License, which is
   * available at www.apache.org/licenses/LICENSE-2.0
   *
   * This software is distributed on an "AS IS" basis, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
   * either express or implied, as more fully set forth in the License.
   *
   * See the NOTICE file distributed with this work for information regarding copyright ownership.
   */
  
  package alluxio.master.file.meta;
  
  import alluxio.AlluxioURI;
  
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import java.util.List;
  import javax.annotation.concurrent.ThreadSafe;
  
  /**
   * This is a noop version of {@link UfsAbsentPathCache}.
   */
  @ThreadSafe
  public final class NoopUfsAbsentPathCache implements UfsAbsentPathCache {
    private static final Logger LOG = LoggerFactory.getLogger(NoopUfsAbsentPathCache.class);
  
    /**
     * Creates a new instance of {@link NoopUfsAbsentPathCache}.
     */
    public NoopUfsAbsentPathCache() {
      // Do nothing
    }
  
    @Override
    public void processAsync(AlluxioURI path, List<Inode> prefixInodes) {
      // Do nothing
    }
  
    @Override
    public void addSinglePath(AlluxioURI path) {
      // Do nothing
    }
  
    @Override
    public void processExisting(AlluxioURI path) {
      // Do nothing
    }
  
    @Override
    public boolean isAbsentSince(AlluxioURI path, long absentSince) {
      return false;
    }
  }
  