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.job.command;
  
  import alluxio.annotation.PublicApi;
  import alluxio.cli.CommandUtils;
  import alluxio.cli.fs.command.AbstractFileSystemCommand;
  import alluxio.client.file.FileSystemContext;
  import alluxio.client.job.JobContext;
  import alluxio.client.job.JobMasterClient;
  import alluxio.exception.AlluxioException;
  import alluxio.exception.ExceptionMessage;
  import alluxio.exception.status.InvalidArgumentException;
  import alluxio.job.wire.JobInfo;
  import alluxio.job.wire.TaskInfo;
  import alluxio.resource.CloseableResource;
  
  import org.apache.commons.cli.CommandLine;
  import org.apache.commons.cli.Option;
  import org.apache.commons.cli.Options;
  import org.apache.commons.lang3.StringUtils;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import java.io.IOException;
  import javax.annotation.concurrent.ThreadSafe;
  
  /**
   * Displays the status of the job.
   */
  @ThreadSafe
  @PublicApi
  public final class StatCommand extends AbstractFileSystemCommand {
    private static final Logger LOG = LoggerFactory.getLogger(StatCommand.class);
    private static final Option VERBOSE_OPTION =
        Option.builder("v")
            .required(false)
            .hasArg(false)
            .desc("show the status of every task")
            .build();
  
    /**
     * Creates the job stat command.
     *
     * @param fsContext the Alluxio filesystem client
     */
    public StatCommand(FileSystemContext fsContext) {
      super(fsContext);
    }
  
    @Override
    public String getCommandName() {
      return "stat";
    }
  
    @Override
    public Options getOptions() {
      return new Options().addOption(VERBOSE_OPTION);
    }
  
    @Override
    public int run(CommandLine cl) throws AlluxioException, IOException {
      long id = Long.parseLong(cl.getArgs()[0]);
      try (CloseableResource<JobMasterClient> client =
          JobContext.create(mFsContext.getClusterConf(), mFsContext.getClientContext().getUserState())
              .acquireMasterClientResource()) {
        JobInfo info = client.get().getJobStatusDetailed(id);
        System.out.print(formatOutput(cl, info));
      } catch (Exception e) {
        LOG.error("Failed to get status of the job", e);
        System.out.println("Failed to get status of the job " + id);
        return -1;
      }
      return 0;
    }
  
    private String formatOutput(CommandLine cl, JobInfo info) {
      StringBuilder output = new StringBuilder();
      output.append("ID: ").append(info.getId()).append("\n");
      output.append("Name: ").append(info.getName()).append("\n");
      output.append("Description: ");
      if (cl.hasOption("v")) {
        output.append(info.getDescription());
      } else {
        output.append(StringUtils.abbreviate(info.getDescription(), 200));
      }
      output.append("\n");
      output.append("Status: ").append(info.getStatus()).append("\n");
      if (info.getErrorMessage() != null && !info.getErrorMessage().isEmpty()) {
        output.append("Error: ").append(info.getErrorMessage()).append("\n");
      }
      if (info.getResult() != null && !info.getResult().toString().isEmpty()) {
        output.append("Result: ").append(info.getResult().toString()).append("\n");
      }
  
      if (cl.hasOption("v")) {
        for (JobInfo childInfo : info.getChildren()) {
          output.append("Task ").append(childInfo.getId()).append("\n");
          if (childInfo instanceof TaskInfo) {
            TaskInfo taskInfo = (TaskInfo) childInfo;
            if (taskInfo.getWorkerHost() != null) {
              output.append("\t").append("Worker: ").append(taskInfo.getWorkerHost()).append("\n");
            }
          }
          if (!childInfo.getDescription().isEmpty()) {
            output.append("\t").append("Description: ").append(
                StringUtils.abbreviate(childInfo.getDescription(), 200)).append("\n");
          }
          output.append("\t").append("Status: ").append(childInfo.getStatus()).append("\n");
          if (childInfo.getErrorMessage() != null && !childInfo.getErrorMessage().isEmpty()) {
            output.append("\t").append("Error: ").append(childInfo.getErrorMessage()).append("\n");
          }
          if (childInfo.getResult() != null) {
            output.append("\t").append("Result: ").append(childInfo.getResult()).append("\n");
          }
        }
      }
      return output.toString();
    }
  
    @Override
    public String getUsage() {
      return "stat [-v] <id>";
    }
  
    @Override
    public String getDescription() {
      return "Displays the status info for the specific job. Use -v flag to display the status of "
          + "every task";
    }
  
    @Override
    public void validateArgs(CommandLine cl) throws InvalidArgumentException {
      CommandUtils.checkNumOfArgsEquals(this, cl, 1);
      String arg = cl.getArgs()[0];
      try {
        Long.parseLong(arg);
      } catch (Exception e) {
        throw new InvalidArgumentException(ExceptionMessage.INVALID_ARG_TYPE.getMessage(arg, "long"));
      }
    }
  }
  