camera_trigger.py

   1 import glob
   2 import os
   3 import time
   4 import trigger
   5 import utils
   6 from datetime import datetime
   7
   8 class any_camera_trigger(trigger.trigger):
   9     def __init__(self):
  10         self.triggers_in_the_past_seven_min = {
  11             "driveway" :       0,
  12             "frontdoor" :      0,
  13             "cabin_driveway" : 0,
  14             "backyard" :       0,
  15         }
  16         self.last_trigger = {
  17             "driveway" :       0,
  18             "frontdoor" :      0,
  19             "cabin_driveway" : 0,
  20             "backyard" :       0,
  21         }
  22
  23     def choose_priority(self, camera, age):
  24         base_priority_by_camera = {
  25             "driveway" : 1,
  26             "frontdoor" : 2,
  27             "cabin_driveway" : 1,
  28             "backyard" : 0,
  29         }
  30         priority = base_priority_by_camera[camera]
  31         if age < 10:
  32             priority += trigger.trigger.PRIORITY_HIGH
  33         elif age < 30:
  34             priority += trigger.trigger.PRIORITY_NORMAL + age
  35         else:
  36             priority += trigger.trigger.PRIORITY_LOW
  37         return priority
  38
  39     def get_triggered_page_list(self):
  40         triggers = []
  41         cameras_with_recent_triggers = 0
  42         camera_list = [ "driveway",
  43                         "frontdoor",
  44                         "cabin_driveway",
  45                         "backyard" ]
  46
  47         now = time.time()
  48         try:
  49             # First pass, just see whether each camera is triggered and,
  50             # if so, count how many times in the past 7m it has triggered.
  51             for camera in camera_list:
  52                 file = "/timestamps/last_camera_motion_%s" % camera
  53                 ts = os.stat(file).st_ctime
  54                 age = now - ts
  55                 # print "Camera: %s, age %s" % (camera, age)
  56                 if age < 60:
  57                     cameras_with_recent_triggers += 1
  58                     time_since_last_trigger = now - self.last_trigger[camera]
  59                     self.last_trigger[camera] = now
  60                     if time_since_last_trigger < (60 * 7):
  61                         self.triggers_in_the_past_seven_min[camera] += 1
  62                     else:
  63                         self.triggers_in_the_past_seven_min[camera] = 1
  64
  65             # Second pass, see whether we want to trigger due to
  66             # camera activity we found.  All cameras timestamps were
  67             # just considered and should be up-to-date.  Some logic to
  68             # squelch spammy cameras unless more than one is
  69             # triggered at the same time.
  70             for camera in camera_list:
  71                 if self.last_trigger[camera] == now:
  72                     ts = utils.timestamp()
  73                     if (self.triggers_in_the_past_seven_min[camera] <= 4 or
  74                         cameras_with_recent_triggers > 1):
  75                         p = self.choose_priority(camera, age)
  76                         print "%s: ****** %s[%d] CAMERA TRIGGER ******" % (
  77                             ts, camera, p)
  78                         triggers.append( ( "hidden/%s.html" % camera,
  79                                            self.choose_priority(camera, age)) )
  80                     else:
  81                         print "%s: Camera %s too spammy, squelching it" % (
  82                             ts, camera)
  83         except Exception as e:
  84             print e
  85             pass
  86
  87         if len(triggers) == 0:
  88             return None
  89         else:
  90             return triggers
  91
  92 #x = any_camera_trigger()
  93 #print x.get_triggered_page_list()