How to cancel/reset a createTimer in a generic rule

[Yaron_Cohen (Yaron.C)]

Hello,

I would like to set dynamic timers to specific switches while using a generic rule.

I implemented it by adding a gSwitcheTimers group for each switch that I want to run a timer and creating a Number item with the prefix of the switch Item and a “_Timer” suffix.

In sitemap I can set a different timer for each switch and in the rule I am using createTimer that once activated I turn off the switch.

The problem starts if someone turn off the switch and then turn it on while the timer is already running (the switch will be turn off based on the first activation of the timer and not the current one).

Is there a way to stop a running timer or reset it in the example below?

Items:
Group gTimers
Group:Switch:OR(ON, OFF) gSwitchTimers

Switch	Relay1_Output		"Fan"			    <fan_ceiling>	(gSwitchTimers)	{channel="...."}
Number  Relay1_Output_Timer	"Fan - Timer [%s]"	<fan_ceiling>	(gTimers)

Switch	Relay2_Output		"Wall"			    <light>		(gSwitchTimers)	{channel="...."}
Number  Relay2_Output_Timer	"Wall - Timer [%s]"	<light>		(gTimers)

Sitemap:
Setpoint item=Relay1_Output_Timer minValue=1 maxValue=60 step=1
Setpoint item=Relay2_Output_Timer minValue=1 maxValue=60 step=1

Rule:
rule "Timers"
    when
        Member of gSwitchTimers changed to ON
    then
        val device = triggeringItem
        var logger = 1
        val loggerName = "Timers"
        if(device !== null)
        {
            val timer=gTimers.members.findFirst[ t | t.name == device.name + "_Timer" ] as NumberItem
            if (timer.state >0)
            {
                switch(vTimeOfDay.state) 
                {
                    case "NIGHT",
                    case "BED": 
                    {
                        if (logger==1) logInfo(loggerName, "Starting " + timer.name + " timer for "+ (timer.state as Number).intValue + " mins")
                        createTimer(now.plusMinutes((timer.state as Number).intValue)) [ |
                            if(triggeringItem.state == ON)
                            {
                                if (logger==1) logInfo(loggerName, "Turning off "+ timer.name)
                                triggeringItem.sendCommand(OFF)
                            }
                        ]
                    }
                }
            }
            else
            {
                if (logger==1) logInfo(loggerName, "Timer is null")
            }
        }
end

[rossko57]

You can’t cancel a timer unless you keep a reference to it between rule runs

Design Pattern: Associated Items

Please see Design Pattern: What is a Design Pattern and How Do I Use Them for how to read and use DPs. Problem Statement Often one will have a number of separate Items which are all related to each other in some way. For example, one might have a Contact on a door and a DateTime to represent when the last time the door was opened. This is easy enough to keep track of if there are only one or two such Items, but if one has a lot of similar Items or is using a lot of generically coded rules where…

Design Pattern: Working with Groups in Rules

Please see Design Pattern: What is a Design Pattern and How Do I Use Them for how to read and use DPs. Problem Statement Often one finds a number of Rules that are very similar and that all work on similar Items resulting in a lot of duplicated code. One way to solve this problem is through the use of Groups. Concept [image] This DP is not a standard DP in that it provides a single concrete template to follow to solve a specific problem. Instead this DP is more of a grand exploration of some …

[Yaron_Cohen (Yaron.C)]

Thanks, can I create an Item that holds a reference to the timer? How?

[rossko57]

@Yaron_Cohen

can I create an Item that holds a reference to the timer?

No.

In the examples given, the “handle” takes the form of a ‘global variable’.
If you have many to keep, say individual timers for several lights, you can use a global Map to hold a set of refeences keyed by Item names.