Design Pattern: Working with Groups in Rules

Tutorials & Examples
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129

I thought I’d share my code for simulating a time of day type of expire based on groups. Essentially, any member of this group will stay on for an hour if it is turned on between 6am and 11pm; they will only stay on for 30 minutes from 11pm to 6am, though (family is more likely to have fallen asleep…)
I pieced this together mostly from other blocks of code in this thread so credit goes to those guys for blazing the trail. If you have a sizable number of items this beats having lots of rules that all basically do the same thing. It would be trivial to extend this to another group that would have different times as well.

First – groups and items::

Group grp_TODExpire "Expire by Time of Day"

Dimmer Wallplug_Den_BigLamp "Den Lamp" <dimmablelight> (grp_TODExpire)  { channel="zwave..." }
Dimmer WallSwitch_Den_CeilLight "Ceiling Light" <dimmablelight> (grp_TODExpire) { channel="zwave..." }

Now the rule:
off_tod.rule

import java.util.Map

val Map<String, Timer> todTimers = newHashMap

rule "TOD Expire rule"
when
   Member of grp_TODExpire changed
then
   logInfo("RULE","Item "+triggeringItem.name+" turned "+triggeringItem.state+".");
   todTimers.get(triggeringItem.name)?.cancel;
   if (triggeringItem.state==ON || triggeringItem.state>0) {
      if ((new LocalTime().getLocalMillis()) >= (new LocalTime(23, 0, 0, 0).getLocalMillis()) || (new LocalTime().getLocalMillis()) <= (new LocalTime(6, 0, 0, 0).getLocalMillis())) {
          logInfo("RULE","Item "+triggeringItem.name+" turned on.  Will turn it off in 30 minutes");
          todTimers.put(triggeringItem.name, createTimer(now.plusMinutes(30)) [|
             sendCommand(triggeringItem, OFF)
             todTimers.remove(triggeringItem.name)
        ] )
      } else {
          logInfo("RULE","Item "+triggeringItem.name+" turned on.  Will turn it off in 60 minutes");
          todTimers.put(triggeringItem.name, createTimer(now.plusMinutes(60)) [|
             sendCommand(triggeringItem, OFF)
             todTimers.remove(triggeringItem.name)
        ] )
      }
   }
end
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