Class StatCommand

shell/src/main/java/alluxio/cli/job/command/StatCommand.java:40–151

Displays the status of the job.

 * 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");