check_dir_empty

#!/usr/bin/python3

# Copyright (c) 2017 SUSE LLC  All rights reserved.
#
# check_dir_empty is free software: you can redistribute it
# and/or modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation, version 2 of
# the License.
#
# check_dir_empty is distributed in the hope that it will
# be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
# of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with susePublicCloudInfoClient. If not, see
# <http://www.gnu.org/licenses/>.
#
"""
usage: check_dir_empty -h | --help
       check_dir_empty -d DIRECTORY_PATH

options:
    -h --help
       Show help
    -d
       The path to the directory to be monitored to be empty or non existent
"""

import glob
import os
import sys

from docopt import docopt

# Command line processing
command_args = docopt(__doc__)

# Nagios states
OK = 0
WARNING = 1
CRITICAL = 2
UNKNOWN = 3

dir_to_monitor = command_args.get('DIRECTORY_PATH')

if not dir_to_monitor:
    print(__doc__)
    sys.exit(WARNING)

if not os.path.exists(dir_to_monitor):
    sys.exit(OK)
else:
    content = glob.glob('%s/*' % dir_to_monitor)
    if content:
        print(
            'The directory "%s" does exist and is not empty' % dir_to_monitor
        )
        sys.exit(CRITICAL)
    # Directory is empty, all is well
    sys.exit(OK)