Examples of co.cask.cdap.common.utils.UsageException

co.cask.cdap.common.utils.UsageException
This exception is only for bailing out of a command line tool when the command line arguments are not valid. In that case, we want to print a usage statement, but not an exception, and we also don't want to call System.exit(). So, when the program detects an error, it prints the help text and throws this exception. At the top level, we can catch this and exit without printing. We could use IllegalArgumentException instead, but we never know whether that was thrown somewhere else, in which case we want to print the exception.

    HelpFormatter formatter = new HelpFormatter();
    formatter.printOptions(pw, 100, options, 0, 10);
    pw.flush();
    pw.close();
    if (error) {
      throw new UsageException();
    }
  }

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    out.println("  --body-file <path>      Alternative to --body, to specify a file that");
    out.println("                          contains the binary body of the event");
    out.println("  --verbose               To see more verbose output");
    out.println("  --help                  To print this message");
    if (error) {
      throw new UsageException();
    }
  }

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    HelpFormatter formatter = new HelpFormatter();
    formatter.printOptions(pw, 100, options, 0, 10);
    pw.flush();
    pw.close();
    if (error) {
      throw new UsageException();
    }
  }

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Related Classes of co.cask.cdap.common.utils.UsageException

co.cask.cdap.gateway.tools.ClientToolBase

co.cask.cdap.gateway.tools.FlumeClient

co.cask.cdap.security.tools.AccessTokenClient

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