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.fsadmin.pathconf;
  
  import alluxio.cli.CommandUtils;
  import alluxio.cli.fsadmin.command.AbstractFsAdminCommand;
  import alluxio.cli.fsadmin.command.Context;
  import alluxio.conf.AlluxioConfiguration;
  import alluxio.exception.AlluxioException;
  import alluxio.exception.status.InvalidArgumentException;
  import alluxio.grpc.GetConfigurationPOptions;
  import alluxio.wire.Configuration;
  
  import com.google.common.annotations.VisibleForTesting;
  import org.apache.commons.cli.CommandLine;
  
  import java.io.IOException;
  import java.util.ArrayList;
  import java.util.Collections;
  import java.util.List;
  
  /**
   * Lists paths that have path level configuration.
   */
  public final class ListCommand extends AbstractFsAdminCommand {
    /**
     * @param context fsadmin command context
     * @param alluxioConf Alluxio configuration
     */
    public ListCommand(Context context, AlluxioConfiguration alluxioConf) {
      super(context);
    }
  
    @Override
    public String getCommandName() {
      return "list";
    }
  
    @Override
    public void validateArgs(CommandLine cl) throws InvalidArgumentException {
      CommandUtils.checkNumOfArgsEquals(this, cl, 0);
    }
  
    @Override
    public int run(CommandLine cl) throws AlluxioException, IOException {
      Configuration conf = mMetaConfigClient.getConfiguration(
          GetConfigurationPOptions.newBuilder().setIgnoreClusterConf(true).build());
      List<String> paths = new ArrayList<>(conf.getPathConf().keySet());
      Collections.sort(paths);
      for (String path : paths) {
        mPrintStream.println(path);
      }
      return 0;
    }
  
    @Override
    public String getUsage() {
      return "list";
    }
  
    /**
     * @return command's description
     */
    @VisibleForTesting
    public static String description() {
      return "List paths that have path level configuration.";
    }
  
    @Override
    public String getDescription() {
      return description();
    }
  }
  