EXEC "Binding conf not correctly"

Add-ons Bindings
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1

Please… I have an ITEM to receive connected Wifi network name from another computer. I use an SSH command to get this information:

shell$ sshpass -p password ssh pi@ipaddress "/sbin/iwconfig wlan0 | grep ESSID: | cut -d ':' -f2 | cut -d 'N' -f1 | xargs"

I did a shell script emoncms_wifi_nome.sh to call this command using EXEC binding, like:

String Emonhub_Wifi_nome "Rede Wifi [%s]" { exec="<[sudo /usr/share/openhab/configurations/scripts/emoncms_wifi_nome.sh]" }

However, I have this message error…

10:09:30.439 ERROR o.o.m.i.i.GenericItemProvider[:350]- Binding configuration of type 'exec' of item ‘Emonhub_Wifi_nome‘ could not be parsed correctly.
org.openhab.model.item.binding.BindingConfigParseException: bindingConfig 'sudo /usr/share/openhab/configurations/scripts/emoncms_wifi_nome.sh' doesn't represent a valid in-binding-configuration.
	at org.openhab.binding.exec.internal.ExecGenericBindingProvider.parseInBindingConfig(ExecGenericBindingProvider.java:140)
	at org.openhab.binding.exec.internal.ExecGenericBindingProvider.processBindingConfiguration(ExecGenericBindingProvider.java:120)
	at org.openhab.model.item.internal.GenericItemProvider.internalDispatchBindings(GenericItemProvider.java:348)
	at org.openhab.model.item.internal.GenericItemProvider.internalDispatchBindings(GenericItemProvider.java:324)
	at org.openhab.model.item.internal.GenericItemProvider.processBindingConfigsFromModel(GenericItemProvider.java:171)
	at org.openhab.model.item.internal.GenericItemProvider.modelChanged(GenericItemProvider.java:390)

What could be wrong? Any idea?

Thanx!

2

I think you’re missing the refreshinterval?

in: exec="<[<commandLine to execute>:<refreshintervalinmilliseconds>:(<transformationrule>)]"

3

I already did with refresh interval… not difference. It is optional.

4

I think it is required. Have you tried using it like this:

String Emonhub_Wifi_nome "Rede Wifi [%s]" { exec="<[sudo /usr/share/openhab/configurations/scripts/emoncms_wifi_nome.sh:1000:]" }

Uses interval of 1000ms and no transformation, so your script has to return a valid switch value. You should have a : at the end when not using a transformation.

5

The binding config is parsed with a regular expression. Looking at the code that logs the error you are seeing, the regex is…

"(.*?)?:(?!//)(\\d*):(.*)"

This implies you’ll need two trailing colons after the command since you are not providing a refresh interval or a transformation.

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6

Yes but according to the binding doc only transformation is optional so that means one trailing colon and a refresh interval.

in:  exec="<[<commandLine to execute>:<refreshintervalinmilliseconds>:(<transformationrule>)]"
out: exec=">[<openHAB-command>:<commandLine to execute>] (>[<openHAB-command>:<commandLine to execute>]) (>[...])"

where the parts in () are optional.

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7

sudo /usr/share/openhab/configurations/scripts/emoncms_wifi_nome.sh:1000:

ERROR o.o.p.e.internal.ExecService[:84]- Could not execute command [null]
java.lang.NullPointerException: null
at java.util.regex.Matcher.getTextLength(Matcher.java:1283)
at java.util.regex.Matcher.reset(Matcher.java:309)
at java.util.regex.Matcher.(Matcher.java:229)
at java.util.regex.Pattern.matcher(Pattern.java:1093)
at java.util.Formatter.parse(Formatter.java:2547)
at java.util.Formatter.format(Formatter.java:2501)

8

Steve… solved:

<[sudo /usr/share/openhab/configurations/scripts/emoncms_wifi_nome.sh:10000:REGEX((.*?))]

script looks like:

sshpass -p PI_USER_PASS ssh -o StrictHostKeyChecking=no pi@SERVER_IP "/sbin/iwconfig wlan0 | grep ESSID: | cut -d ':' -f2 | cut -d 'N' -f1 | xargs"

1 Like