source4/scripting/bin/gen_output.py

   1 #!/usr/bin/env python3
   2
   3 # Copyright (C) Catalyst IT Ltd. 2017
   4 #
   5 # This program is free software; you can redistribute it and/or modify
   6 # it under the terms of the GNU General Public License as published by
   7 # the Free Software Foundation; either version 3 of the License, or
   8 # (at your option) any later version.
   9 #
  10 # This program is distributed in the hope that it will be useful,
  11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 # GNU General Public License for more details.
  14 #
  15 # You should have received a copy of the GNU General Public License
  16 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17
  18 """
  19 A data generator to help tests.
  20
  21 Generate large output to stdout by repeating input data.
  22 Usage:
  23
  24     python gen_output.py --data @ --repeat 1024 --retcode 1
  25
  26 The above command will output @ x 1024 (1K) and exit with 1.
  27 """
  28
  29 import sys
  30 import argparse
  31
  32 parser = argparse.ArgumentParser(description='Generate output data')
  33
  34 parser.add_argument(
  35     '--data', type=str, default='$',
  36     help='Characters used to generate data by repeating them'
  37 )
  38
  39 parser.add_argument(
  40     '--repeat', type=int, default=1024 * 1024,
  41     help='How many times to repeat the data'
  42 )
  43
  44 parser.add_argument(
  45     '--retcode', type=int, default=0,
  46     help='Specify the exit code for this script'
  47 )
  48
  49 args = parser.parse_args()
  50
  51 sys.stdout.write(args.data * args.repeat)
  52
  53 sys.exit(args.retcode)