home/portalmonitor.py

   1 #!/usr/bin/env python3
   2
   3 import requests
   4 import time
   5 import sys
   6 import configparser
   7 from suntime import Sun
   8 from optparse import OptionParser
   9
  10 parser = OptionParser(usage="usage: %prog [options]")
  11 parser.add_option("-s",
  12                   "--status",
  13                   action="store_true",
  14                   dest="printStatus",
  15                   help="Print Status Information",
  16                   default=False)
  17 parser.add_option("-f",
  18                   "--force",
  19                   action="store_true",
  20                   dest="force",
  21                   help="Force retrieval of Power value",
  22                   default=False)
  23 (options, args) = parser.parse_args()
  24
  25
  26 def isDaylight(lat, lon, toleranceSeconds):
  27     daylight = False
  28     sun = Sun(lat, lon)
  29     sunriseTimestamp = int(sun.get_local_sunrise_time().timestamp())
  30     sunsetTimestamp = int(sun.get_local_sunset_time().timestamp())
  31     nowTimestamp = int(time.time())
  32
  33     if ((sunriseTimestamp + toleranceSeconds) < nowTimestamp) and (
  34         (sunsetTimestamp - toleranceSeconds) > nowTimestamp):
  35         daylight = True
  36
  37     return daylight
  38
  39
  40 def getCurrentPower(userName, password, stationId):
  41     with requests.Session() as s:
  42         try:
  43             r = s.post('https://www.envertecportal.com/apiaccount/login',
  44                        data={
  45                            'userName': userName,
  46                            'pwd': password
  47                        },
  48                        timeout=(10, 30))
  49         except requests.exceptions.RequestException as e:
  50             raise SystemExit(e)
  51
  52         try:
  53             r = s.post(
  54                 'https://www.envertecportal.com/ApiStations/getStationInfo',
  55                 data={
  56                     'stationId': stationId
  57                 },
  58                 timeout=(10, 60)).json()
  59             power = r['Data']['Power']
  60         except requests.exceptions.RequestException as e:
  61             raise SystemExit(e)
  62
  63         try:
  64             r = s.post('https://www.envertecportal.com/apiAccount/Logout',
  65                        timeout=(10, 30))
  66         except requests.exceptions.RequestException as e:
  67             raise SystemExit(e)
  68
  69     return float(power)
  70
  71
  72 # read configuration file
  73 conf = configparser.ConfigParser()
  74 conf.read('portalmonitor.ini')
  75
  76 # retrieve current power value as reported by envertecportal
  77 if isDaylight(conf['config'].getfloat('lat'), conf['config'].getfloat('lon'),
  78               conf['config'].getint('toleranceSeconds')) or options.force:
  79     currentPower = getCurrentPower(conf['config']['userName'],
  80                                    conf['config']['password'],
  81                                    conf['config']['stationId'])
  82
  83     if options.printStatus:
  84         print('Current Power: ' + str(currentPower))
  85
  86     if currentPower == 0:
  87         print('Error: Power dropped to 0 but we should have daylight!')
  88         sys.exit(1)