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;
  
  import alluxio.conf.AlluxioConfiguration;
  import alluxio.security.User;
  import alluxio.security.authentication.AuthenticatedClientUser;
  
  import java.io.Closeable;
  import javax.annotation.concurrent.NotThreadSafe;
  
  /**
   * A resource for changing the Alluxio authenticated client user during a test.
   */
  @NotThreadSafe
  public final class AuthenticatedClientUserResource implements Closeable {
    User mOriginal;
  
    public AuthenticatedClientUserResource(String user, AlluxioConfiguration conf) throws Exception {
      mOriginal = AuthenticatedClientUser.get(conf);
      AuthenticatedClientUser.set(user);
    }
  
    @Override
    public void close() {
      AuthenticatedClientUser.set(mOriginal);
    }
  }
  