OH3: MQTT Channel configuration error

Setup, Configuration and Use Migration
1

Hi, I am testing an Openhab3 installation on linux. Before using it as daily driver, I would like to check if everythin is initializating fine. This WARN occurs while starting openhab 3:

2021-01-15 11:12:07.892 [WARN ] [rnal.handler.GenericMQTTThingHandler] - Channel configuration error

java.lang.IllegalArgumentException: The transformation pattern must consist of the type and the pattern separated by a colon

    at org.openhab.binding.mqtt.generic.ChannelStateTransformation.<init>(ChannelStateTransformation.java:50) ~[bundleFile:?]

    at org.openhab.binding.mqtt.generic.internal.handler.GenericMQTTThingHandler.lambda$7(GenericMQTTThingHandler.java:131) ~[bundleFile:?]

    at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:195) ~[?:?]

    at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) ~[?:?]

    at java.util.Spliterators$ArraySpliterator.forEachRemaining(Spliterators.java:948) ~[?:?]

    at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) ~[?:?]

    at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) ~[?:?]

    at java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) ~[?:?]

    at java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) ~[?:?]

    at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) ~[?:?]

    at java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) ~[?:?]

    at org.openhab.binding.mqtt.generic.internal.handler.GenericMQTTThingHandler.createChannelState(GenericMQTTThingHandler.java:132) ~[bundleFile:?]

    at org.openhab.binding.mqtt.generic.internal.handler.GenericMQTTThingHandler.initialize(GenericMQTTThingHandler.java:165) [bundleFile:?]

    at jdk.internal.reflect.GeneratedMethodAccessor47.invoke(Unknown Source) ~[?:?]

    at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:?]

    at java.lang.reflect.Method.invoke(Method.java:566) ~[?:?]

    at org.openhab.core.internal.common.AbstractInvocationHandler.invokeDirect(AbstractInvocationHandler.java:154) [bundleFile:?]

    at org.openhab.core.internal.common.Invocation.call(Invocation.java:52) [bundleFile:?]

    at java.util.concurrent.FutureTask.run(FutureTask.java:264) [?:?]

    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) [?:?]

    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) [?:?]

    at java.lang.Thread.run(Thread.java:834) [?:?]

Is that a general warning for a transformation binding? I can’t see any reference to a particular channel in these messages.
I use JSONPATH and REGEX filters in my channels, and copied them 1:1 from my daily used OH2.5.11 to the OH3 test installation.

Thank’s for your help

2

The transformation pattern must consist of the type and the pattern separated by a colon

This means that one of your transformation configurations didn’t have the right syntax. It should be:

SERVICE:PATTERN

such as

JSONPATH:$.power
3

Thank’s for the hint. But, “one of your transformation configurations”. It is not mentioned which particular channel, so I need to view every channel of every thing?

4

I’m afraid so…!

5

Figured it out easily. Either via the good overview with the “code” tab of each thing in OH3 or there were a status label with “conf. error” in thing overview which shows the wrong configured item. It was a copy paste error by myself. Was pasting the mqtt cmnd syntax in jsonpath transformation field.

6

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