1 // (c) Bernhard Tittelbach, 2013
7 pubsub "github.com/tuxychandru/pubsub"
9 r3events "svn.spreadspace.org/realraum/go.svn/r3events"
13 /// Movement Meta Event Injector:
14 /// threshold number of movements within gran_duration*granularity seconds -> SomethingReallyIsMoving{True}
15 /// No movement within 3 hours but movement within the last 6 hours -> SomethingReallyIsMoving{False}
17 /// Thus SomethingReallyIsMoving{True} fires regularly, but at most every gran_duration seconds
18 /// While SomethingReallyIsMoving{False} fires only once to assure us that everybody might really be gone
21 func MetaEventRoutine_Movement(ps *pubsub.PubSub, granularity, gran_duration int , threshold uint32) {
22 var last_movement int64
23 movement_window := ring.New(granularity+1)
24 events_chan := ps.Sub("movement")
25 defer ps.Unsub(events_chan, "movement")
26 myticker := time.NewTicker(time.Duration(gran_duration) * time.Second)
29 case event := <- events_chan:
31 case r3events.MovementSensorUpdate:
32 movement_window.Value = (uint32) (movement_window.Value.(uint32) + 1)
35 movement_window.Prev().Value = (uint32) (0)
36 movement_window = movement_window.Next()
38 movement_window.Do(func(v interface{}){if v != nil {movsum += v.(uint32)}})
39 ts := time.Now().Unix()
40 if movsum > threshold {
41 ps.Pub( r3events.SomethingReallyIsMoving{true,ts}, "movement")
45 if last_movement > 0 && ts - last_movement < 3600*6 && ts - last_movement > 3600*3 {
47 ps.Pub( r3events.SomethingReallyIsMoving{false, ts}, "movement")