Beginner - Exec Binding does not Save Output Value

Add-ons Bindings
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1

Hi,

i am new to openHAB2 and have a little problem. I have a script running called temp.py which returns me the value of my room-temperature from an arduino.

It’s working fine, but the Output-Value does not get saved. After a refresh of the PaperUI my Output is back to NaN.

My Item:
Number Wohnzimmer_Temp1 "Raumtemperatur [%.1f °C]" <temperature> (RoomTemp) { channel="exec:command:temp1:output" }

My Sitemap:

Frame label=“Wohnzimmer” {
Text item=Wohnzimmer_Temp1
Text label=“HDMI-Switch” icon=“television” {
Switch item=HDMI1 label=“Switch to HDMI 1” icon=“television-off” mappings=[ON=“GO”]
Switch item=HDMI2 label=“Switch to HDMI 2” icon=“television-off” mappings=[ON=“GO”]
Switch item=HDMI3 label=“Switch to HDMI 3” icon=“television-off” mappings=[ON=“GO”]
Switch item=HDMI4 label=“Switch to HDMI 4” icon=“television-off” mappings=[ON=“GO”]
Switch item=HDMI5 label=“Switch to HDMI 5” icon=“television-off” mappings=[ON=“GO”]
}
}

My Thing
Thing exec:command:temp1 [command="python /home/osmc/script/temp.py", interval=60, timeout=5, autorun=true]

PS: If I look in the PaperUI, my last Execution gets saved, but not the output value. After refreshing the page it’s gone

2

According to the documentation, the output channel support the item type String, try to change from Number to String.

3

Thanks. Now it works.

Didn’t think of that, because i got a result, but it was just gone after a refresh.

4

Hmm,

I am having the same issue. Only thing is, if my execution code is invalid, I get some text back, but if my code is valid, it fails to post a value?

sample input code:

    wget -q "https://www.accuweather.com/en/gb/manchester/m15-6/minute-weather-forecast/329260" -O - |tr '\n\r' ' '| sed 's|.*<div class="mc-summary">[[:blank:]]\+<p>\(.*\)</p>[[:blank:]]\+</div>.*|\1|'

If I run this in a shell, I get:


[15:26:03] openhabian@openHABianPi:~$    wget -q "https://www.accuweather.com/en/gb/manchester/m15-6/minute-weather-forecast/329260" -O - |tr '\n\r' ' '| sed 's|.*<div class="mc-summary">[[:blank:]]\+<p>\(.*\)</p>[[:blank:]]\+</div>.*|\1|'
No precipitation for at least 120 min[15:26:08] openhabian@openHABianPi:~$

Any guesses?

My Command is set to the text above,
Transform is set to Regex.

I don;t quite understand how to use the transform, since I could simply in theiry have used the wget and a regex pattern to pull the same group text?

5

I have tried using

wget -q "https://www.accuweather.com/en/gb/london/sw20-9/minute-weather-forecast/52766_pc" -O -

as my command and

REGEX(<div class="mc-summary">\s*<p>(.*)<\/p>)

as my transform, but same problem.
Incidentally, yes regex transform is installed.

Output values

openhab> smarthome:items list | grep GetRain
GetRainUpdate_Output (Type=StringItem, State=null, Label=Output, Category=null)
GetRainUpdate_LastExecution (Type=DateTimeItem, State=2018-05-24T15:44:10.732+0100, Label=Last Execution, Category=null)
GetRainUpdate_ExitValue (Type=NumberItem, State=1, Label=Exit Value, Category=null)
openhab>

and yes - out value is a string.

Finally, code exe3cution at cmdline says:

[15:45:15] openhabian@openHABianPi:~$ wget -q "https://www.accuweather.com/en/gb/london/sw20-9/minute-weather-forecast/52766_pc" -O - |tr '\n\r' ' '| sed 's|.*<div class="mc-summary">[[:blank:]]\+<p>\(.*\)</p>[[:blank:]]\+</div>.*|\1|' -u
Rain starting in 21 min[15:45:22] openhabian@openHABianPi:~$
6

OK,

I am able to grab the full website using the exec binding now, but the regex does not work.
If I use the default REGEX((.*)) - my items updates with the full page content.

If I modify the regex to parse that info I get null.

I have tested my regex, here is what WORKs and has been tried:

https://regex101.com/r/wvwy7C/1
https://regex101.com/r/wvwy7C/2
https://regex101.com/r/wvwy7C/3

I am configuring Exec via PaperUI at the moment, but happy to change

Anyone?
Bueller?