vtlist.py

#!/usr/bin/python

"""This tool prints a list of all vttablets from vtctld.

This is meant to be used in conjucntion with vtexec.py.
Run vtlist.py and pipe it through grep filters to narrow down
the list of vttablets you want to identify. Once you're satisfied with the
list, pipe the final output to vtexec.py, which will execute the given
command on all vttablets of the list.

Example commands:

  Run a command on all prod masters:
  vtlist.py cell | grep master | grep -v test | vtexec.py '...'

  Run a command on all replicas of a keyspace:
  vtlist.py cell | grep keyspace| grep replica | vtexec.py '...'
"""

import argparse
import subprocess

if __name__ == "__main__":
  parser = argparse.ArgumentParser()
  parser.add_argument("cell")
  args = parser.parse_args()
  subprocess.check_call(["vtctl", "ListAllTablets", args.cell])