go/r3-eventbroker_zmq/presence.go

   1 // (c) Bernhard Tittelbach, 2013
   2
   3 package main
   4
   5 import (
   6     "time"
   7     //~ "./brain"
   8     pubsub "github.com/tuxychandru/pubsub"
   9     r3events "svn.spreadspace.org/realraum/go.svn/r3events"
  10     )
  11
  12 func MetaEventRoutine_Presence(ps *pubsub.PubSub, movement_timeout, button_timeout int64) {
  13     //~ var last_door_cmd *r3events.DoorCommandEvent
  14     var last_presence bool
  15     var last_movement, last_buttonpress, last_frontlock_use int64
  16     var front_locked, front_shut, back_shut bool = true, true, true
  17
  18     events_chan := ps.Sub("door", "doorcmd", "buttons", "movement")
  19     defer ps.Unsub(events_chan, "door", "doorcmd", "buttons", "movement")
  20
  21     for event := range(events_chan) {
  22         Debug_.Printf("Presence prior: %t : %T %+v", last_presence, event, event)
  23         new_presence := last_presence
  24         ts := time.Now().Unix()
  25         switch evnt := event.(type) {
  26             case r3events.SomethingReallyIsMoving:
  27                 if evnt.Movement {
  28                     last_movement = evnt.Ts
  29                 } else {
  30                     last_movement = 0
  31                     if last_presence { Syslog_.Print("Presence: Mhh, SomethingReallyIsMoving{false} received but presence still true. Quite still a bunch we have here.") }
  32                 }
  33             case r3events.BoreDoomButtonPressEvent:
  34                 last_buttonpress = evnt.Ts
  35                 new_presence = true
  36             case r3events.DoorCommandEvent:
  37                 //~ last_door_cmd = &evnt
  38             case r3events.DoorLockUpdate:
  39                 front_locked = evnt.Locked
  40                 last_frontlock_use = evnt.Ts
  41             case r3events.DoorAjarUpdate:
  42                 if front_shut == false && evnt.Shut && front_locked && evnt.Ts - last_frontlock_use > 2 {
  43                     Syslog_.Print("Presence: ignoring frontdoor ajar event, since obviously someone is fooling around with the microswitch while the door is still open")
  44                 } else {
  45                     front_shut = evnt.Shut
  46                 }
  47             case r3events.BackdoorAjarUpdate:
  48                 back_shut = evnt.Shut
  49         }
  50
  51         any_door_unlocked := (front_locked == false)
  52         any_door_ajar := ! (front_shut && back_shut)
  53
  54         if new_presence != last_presence {
  55             //... skip state check .. we had a definite presence event
  56         } else if any_door_unlocked || any_door_ajar {
  57             new_presence = true
  58         } else if ts - last_movement < movement_timeout || ts - last_buttonpress < button_timeout {
  59             new_presence = true
  60         } else {
  61             new_presence = false
  62         }
  63         //~ Debug_.Printf("Presence: new: %s , last:%s", new_presence, last_presence)
  64         if new_presence != last_presence {
  65             last_presence = new_presence
  66             ps.Pub(r3events.PresenceUpdate{new_presence, ts} , "presence")
  67         }
  68     }
  69 }