OH3 Rules / Scripts and CommandLine

Setup, Configuration and Use Scripts & Rules
1
  • Platform information:
    • Hardware: Intel i9 9900 with 32GB of memory
    • OS: Arch Linux
    • Java Runtime Environment: Zulu Embedded 8 Java 11 OpenJDK
    • openHAB version: OH3 3.10 Snapshot
  • Issue of the topic: Executing command-line from a Rule/Script.

I am creating a rule that is supposed to execute a command when a switch changes status.

I’ve created a switch item to control my Roku. The switch seems to work just fine as it is toggling across all devices and updating.

Screen Shot 2020-12-31 at 7.28.07 PM
Screen Shot 2020-12-31 at 7.28.07 PM1476×888 41.7 KB

I created a rule that is supposed to execute a command when the state changes however, nothing happens when I flip the switch.

I have tried creating the rule in /etc/openhab3/rules/home.rules and creating the script on the web UI. Both cases don’t work.

Here is what I have tried in /etc/openhab3/rules/home.rules:

rule "Roku On"
    when
            Item rokuPower received command ON
    then
            executeCommandLine(Duration.inSeconds(5), "curl -d '' http://192.168.1.33:8060/keypress/Home")
    end

In the rule creator UI web tool, I create the rule like the following:

triggers:
  - id: "1"
    configuration:
      itemName: rokuPower
    type: core.ItemStateChangeTrigger
conditions: []
actions:
  - id: "2"
    configuration:
      type: application/javascript
      script: executeCommandLine(Duration.inSeconds(5), "curl -d ''http://192.168.1.33:8060/keypress/Home")
    type: script.ScriptAction

Here is a screenshot of the UI:

Screen Shot 2020-12-31 at 7.43.56 PM
Screen Shot 2020-12-31 at 7.43.56 PM1468×1262 65.3 KB

Screen Shot 2020-12-31 at 7.44.08 PM
Screen Shot 2020-12-31 at 7.44.08 PM1272×914 58 KB

Screen Shot 2020-12-31 at 7.44.28 PM
Screen Shot 2020-12-31 at 7.44.28 PM1776×322 17.8 KB

Are there any known issues with sending commands to command line or am I completely doing this wrong? Thanks, and any help is appreciated.

2

First of all OH3 requires Java 11

I would have guessed it needed to be under /etc/openhab/rules

3

no more conf folder?

4

Thanks for the responses, I am not sure how I got the wrong Java version, but zulu-embedded-8 was wrong because OH3 wouldn’t even start with that (I had that installed for OH2)… I am running Java 11 OpenJDK.

[root@banshee openhab3]# archlinux-java status
Available Java environments:
  java-11-openjdk (default)
  java-14-openjdk
  zulu-8
  zulu-embedded-8

As for the configuration folder/location; /etc/openhab/rules doesn’t exist nor does it work, however, when I add to /etc/openhab3/rules/home.rules, the rules populate in the web UI.

To further clarify, other switches and rules are working, just not rules with command line execution.

5

Problem solved. The commands weren’t whitelisted.

6

Sorry typo. I thought they got rid of the version number in the folders.