Script to create a number of recurring maintenance windows in PagerDuty

recurring_maintenance_windows.py

#!/usr/bin/env python3
"""Script to create reoccuring maintenance windows for PagerDuty"""
#
# Copyright (c) 2016, PagerDuty, Inc. <info@pagerduty.com>
# Copyright (c) 2022, BrainMill AB, <info@brainmill.com>
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#     * Redistributions of source code must retain the above copyright
#       notice, this list of conditions and the following disclaimer.
#     * Redistributions in binary form must reproduce the above copyright
#       notice, this list of conditions and the following disclaimer in the
#       documentation and/or other materials provided with the distribution.
#     * Neither the name of PagerDuty Inc nor the
#       names of its contributors may be used to endorse or promote products
#       derived from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL PAGERDUTY INC BE LIABLE FOR ANY
# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
# Script to create a number of recurring maintenance windows
# CLI Usage: ./recurring_maintenance_windows.py \
#   -a <api_key> \
#   -e <email> \
#   -s <start_date> \
#   -d <duration> \
#   -f <frequency> \
#   -r <repeat> \
#   -c <description> \
#   -i <service_ids>
#
#   api_key: Your PagerDuty API access token
#   email: The email address associated with your PagerDuty account
#   start_date: The date at which you would like the first mainteance window to occur
#   duration: The length of time for the maintenance window in minutes
#   frequency: The length of time between recurring maintenance windows in hours
#   repeat: The number of times you want this maintenance window to recur
#   description: A description for the maintenance window
#   service_ids: The unique ID's of services you want to add these maintenance windows to
#
#
# 2022, BrainMill AB: Add logging and argparser.

import argparse
import json
import logging
#import sys
#from datetime import datetime, timedelta
from datetime import timedelta
from pprint import pformat

import requests
import dateutil.parser


def _setup_logging():
    """ Configure (global?) logging """
    logging.basicConfig(
        format="[%(asctime)s.%(msecs).03d - %(levelname)7s - "
               "%(filename)15s:%(lineno)-5s - %(funcName)20s()]: %(message)s",
        datefmt='%Y-%m-%d %H:%M:%S',
        level=logging.DEBUG)

def _setup_argparser():
    """ Sets up argparser """
    parser = argparse.ArgumentParser(description="Schedule recurring PagerDuty maintenance windows")
#    parser.add_argument("-c", "--conffile", action="store",
#                        default=DEFAULT_CONFFILE,
#                        help="Base directory to output to. Default: %s" %
#                        DEFAULT_CONFFILE)
    parser.add_argument("-a", "--apikey", action="store", required=True,
                        help="Your PagerDuty API key.")
    parser.add_argument("-e", "--email", action="store", required=True,
                        help="Your email address associated with your PagerDuty account.")
    parser.add_argument("-s", "--start_date", action="store", required=True,
                        help="The date at which you would like the first maintenance window "
                             "to occur.")
    parser.add_argument("-d", "--duration", action="store", required=True,
                        help="The length of time for the maintenance window in minutes.")
    parser.add_argument("-f", "--frequency", action="store", required=True,
                        help="The length of time between recurring maintenancew windows in hours.")
    parser.add_argument("-r", "--repeat", action="store", required=True,
                        help="The number of times you want this maintenance window to recur.")
    parser.add_argument("-c", "--description", action="store", required=True,
                        help="A description of the maintenance window.")
    parser.add_argument("-i", "--service_id", action="store", required=True, nargs='+',
                        help="The unique ID of services you want to add these maintenance "
                             "windows to. Can be repeated.")

    return parser


def _parse_args(parser):
    """ Run the parser and process the supplied args.
    Returns dict with options """
    args = vars(parser.parse_args())
    logging.debug("opts (parse_args()")
    logging.debug(pformat(args))
    confs = {}

    confs['apikey'] = args['apikey']
    confs['email'] = args['email']
    confs['start_date'] = args['start_date']
    confs['duration'] = args['duration']
    confs['frequency'] = args['frequency']
    confs['repeat'] = args['repeat']
    confs['description'] = args['description']
    confs['service_id'] = args['service_id']

    logging.debug('resulting conf')
    logging.debug(pformat(confs))

    return confs


def create_maintenance_windows(opts):
    """Creates maintenance windows"""
    headers = {
        'Authorization': 'Token token=' + opts.get('apikey'),
        'Content-type': 'application/json',
        'Accept': 'application/vnd.pagerduty+json;version=2',
        'From': opts.get('email')
    }

    services_list = []
    if isinstance(opts.get('service_id'), list):
        for service in opts.get('service_id'):
            services_list.append({
              'id': service,
              'type': 'service_reference'
            })
    else:
        services_list.append({
            'id': opts.get('service_id'),
            'type': 'service_reference'
        })

    start = dateutil.parser.parse(opts.get('start_date'))
    end = start + timedelta(minutes=int(opts.get('duration')))
    for _ in range(0, int(opts.get('repeat'))):
        payload = {
            'maintenance_window': {
                'type': 'maintenance_window',
                'start_time': start.isoformat(),
                'end_time': end.isoformat(),
                'description': opts.get('description'),
                'services': services_list
            }
        }
        logging.info("Creating a %s minute maintenance window starting at %s",
                     opts.get('duration'), opts.get('start'))
        logging.debug("Payload:")
        logging.debug(pformat(payload))
        req = requests.post('https://api.pagerduty.com/maintenance_windows',
                            headers=headers, data=json.dumps(payload))
        if req.status_code == 201:
            logging.info("Maintenance window with ID %s was successfully created",
                         req.json()['maintenance_window']['id'])
        else:
            logging.error("""Error: maintenance window creation failed!
Status code: %s
Response: %s
Exiting...""", str(req.status_code), req.text)
        start = start + timedelta(hours=int(opts.get('frequency')))
        end = end + timedelta(hours=int(opts.get('frequency')))

def main():
    """Main method"""
    _setup_logging()
    parser = _setup_argparser()
    opts = _parse_args(parser)

    create_maintenance_windows(opts)


if __name__ == '__main__':
    main()

Python3, argparser, logging version of the original at https://gist.github.com/lfepp/32afebc59aa4b88a733bcc1b4f7236f9