MQTT Help in docker openhab install

Setup, Configuration and Use Beginners
1
  • Platform information:
    • Hardware: AMD64
    • OS: ubuntu 20 running docker
    • Java Runtime Environment: which java platform is used and what version
    • openHAB version:2.5.5
  • Issue of the topic: I’m having trouble making my openhab running in docker pickup the MQTT

This is the GPS.things file I created

Bridge mqtt:broker:GPS “MQTT Broker”
[
host=“10.1.40.9”,
port=1883,
secure=false,
clientid=“openhab”
]

Thing mqtt:topic:GPS:chris “Chris GPS” (mqtt:broker:GPS) @ “GPS”
{
Channels:
Type string : Place "Location: " [ stateTopic=“location” ]
Type number : Battery "Battery: " [ stateTopic=“batt” ]
Type number : Latitude "Lat Coordinates: " [ stateTopic=“lat” ]
Type number : Longitude "Lon Coordinates: " [ stateTopic=“lon” ]
Type number : Accuracy "Accuracy: " [stateTopic=“acc” ]
}

This is my GPS.items file I created

String Chris_Location “Chris Location: [%s]” (GPS) {mqtt="<[mqtt:broker:GPS/chris:state:JSONPATH($.locname):.*]"}

Number Chris_Batt “Chris Battery: [%]” (GPS, Battery) {mqtt="<[mqtt:broker:GPS/chris:state:JSONPATH($.batt):.*]"}

Location Chris_Loc “Chris Location [%s]” (GPS) { mqtt="<[mqtt:broker:GPS/chris:state:JS(owntracks-coordinates.js)]" }

This is the owntracks-coordinates.js file I created
var location = JSON.parse(input);
result = lat + “,” + lon;

I’ve connected to the MQTT server and I can verify that information is being received and that openhab is connecting to it

Output from the MQTT server

chris = {“acc”:50,“lon”:-00.163479,“lat”:00.0984925,“batt”: 18,“location”: Home}
*I manually changed the coordinates for my security when posting.

for the life of me I cannot figure out what I’m doing wrong that none of my items are being populated in openhab everything is coming back blank or not

Control Output in PaperUI

Chris Location: -
Chris Battery: -

For a little back story I was running this in openhabian on a raspberry pi but my SD card corrupted so I decided to move it over to a desktop running docker. Everything else is running great just having issues with this. I didn’t have issues with the script before which generates this MQTT information and obviously the MQTT is working as I can see if on the server. I’m at my wits end here. would love any insight you can give.

Chris

2

But, can openHAB connect to it? What does your openhab.log have to say about this?

These are MQTT binding version 1 configurations, and wil never work with the Things and channels of version 2.

Don’t think this will work. What are variables lat and lon?

3

Openhab is connecting to the mqtt server. The bridge I created shows it is connected as well as it’s showing as a connected client and the log file concurs. I’ve installed the mqtt 2 binding on openhab

Every article showing how to create mqtt connections shows me the same way what am I doing wrong?

Lon and Lat area longitude and latitude variables that are being passed to the mqtt server but that’s a secondary issue honestly because I’m not getting any of the data let alone those variables.

Regards

Chris

4

Don’t know what you are looking at.
Older postings will invariably be about MQTT binding version 1. But of course they won’t say that, since there was only a version 1 at the time.
{mqtt="blah"}
is version 1 notation and simply will never work with v2 binding

{channel="blah"}
is version 2 notation for use with any binding
You use that when you have configured Things and channels.

Here are the version 2 docs

5

I wasn’t able to make heads or tails out of it. I reverted back to mqqt 1.x bindings and resolved my own issue.