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.cli.fs.command;
  
  import alluxio.AlluxioURI;
  import alluxio.annotation.PublicApi;
  import alluxio.cli.CommandUtils;
  import alluxio.client.file.FileSystemContext;
  import alluxio.exception.AlluxioException;
  import alluxio.exception.status.InvalidArgumentException;
  
  import org.apache.commons.cli.CommandLine;
  
  import java.io.IOException;
  import javax.annotation.concurrent.ThreadSafe;
  
  /**
   * Sync direct children next time command.
   */
  @ThreadSafe
  @PublicApi
  public final class SyncDirNextTimeCommand extends AbstractFileSystemCommand {
  
    private boolean mSyncNextTime;
  
    /**
     * @param fsContext the filesystem of Alluxio
     */
    public SyncDirNextTimeCommand(FileSystemContext fsContext) {
      super(fsContext);
    }
  
    @Override
    public String getCommandName() {
      return "syncDirNextTime";
    }
  
    @Override
    public void validateArgs(CommandLine cl) throws InvalidArgumentException {
      CommandUtils.checkNumOfArgsEquals(this, cl, 2);
    }
  
    @Override
    protected void runPlainPath(AlluxioURI path, CommandLine cl)
        throws AlluxioException, IOException {
      FileSystemCommandUtils.setDirectChildrenLoaded(mFileSystem, path, mSyncNextTime);
      System.out.format("Successfully marked the dir %s to %s%n", path,
          mSyncNextTime ? "trigger metadata sync on next access"
              : "skip metadata sync on next access");
    }
  
    @Override
    public int run(CommandLine cl) throws AlluxioException, IOException {
      String[] args = cl.getArgs();
      mSyncNextTime = Boolean.parseBoolean(args[0]);
      runWildCardCmd(new AlluxioURI(args[1]), cl);
      return 0;
    }
  
    @Override
    public String getUsage() {
      return "syncDirNextTime <true|false> <path>\n"
          + "\ttrue means the next access will trigger a metadata sync on the dir"
          + "\tfalse means the next metadata sync is disabled";
    }
  
    @Override
    public String getDescription() {
      return "Marks a directory to either trigger a metadata sync or skip the "
          + "metadata sync on next access.";
    }
  }
  