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Blame mqtt/example-safe-command.py

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#!/usr/bin/env python3.6
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#pylint: disable=line-too-long
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#
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#  Copyright (2019).  Fermi Research Alliance, LLC.
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#  Initial Author: Pat Riehecky <riehecky@fnal.gov>
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#
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'''
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    Example command to run from listen-on-dbus-for-mqtt-signals.py
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'''
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## Uncomment these for python2 support
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#from __future__ import unicode_literals
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#from __future__ import absolute_import
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#from __future__ import print_function
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import json
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import sys
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import textwrap
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from pprint import pprint
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try:
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    from argparse import ArgumentParser
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except ImportError:  # pragma: no cover
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    print("Please install argparse - rpm: python-argparse", file=sys.stderr)
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    raise
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##########################################
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def setup_args():
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    '''
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        Setup the argparse object.
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        Make sure all fields have defaults so we could use this as an object
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    '''
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    parser = ArgumentParser(description=textwrap.dedent(__doc__))
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    parser.add_argument('signal', help='The dbus signal is set here')
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    return parser
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##########################################
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##########################################
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##########################################
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if __name__ == '__main__':
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    PARSER = setup_args()
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    ARGS = PARSER.parse_args()
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    MESSAGE = json.loads(sys.stdin.read())
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    print("Your dbus-signal was %s" % ARGS.signal)
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    print("Your message was decoded as %s (between the lines)" % type(MESSAGE))
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    print("------------------------------------------------")
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    pprint(MESSAGE)
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    print("------------------------------------------------")