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.recorder;
  
  import com.google.common.collect.ImmutableList;
  
  import java.util.List;
  
  /**
   * A Recorder which does nothing.
   */
  public class NoopRecorder extends Recorder {
    static final Recorder INSTANCE = new NoopRecorder();
  
    /**
     * Constructs a new instance.
     */
    private NoopRecorder() {
      super();
    }
  
    @Override
    public void record(String message) {
      // no-op
    }
  
    @Override
    public void record(String format, Object... arguments) {
      // no-op
    }
  
    @Override
    public List<String> takeRecords() {
      return ImmutableList.of();
    }
  }
  