I want to use individual KVs on extend MQTT

[kaizen8501]

I want to use individual KVs on extend MQTT

[quirosaur]

i have same kind of problem in tb-gateway 1.4.1, where my second filter expression seems to be ignored, and only first is applied to incoming data.

i try to test this on 1.4.0, but that branch is impossible to build. gateway needs thingsboard 1.4 to be built, and thingsboard 1.4 build gets stuck with these:

2018-05-17 15:39:53,253 [Akka-akka.actor.default-dispatcher-5] INFO  akka.event.slf4j.Slf4jLogger - Slf4jLogger started
2018-05-17 15:39:53,258 [main] ERROR o.t.s.s.c.rpc.ClusterGrpcService - Failed to start RPC server!

i'll let you know if i get this working

[rof20004]

I am with same problem.

[rof20004]

@quirosaur I resolved like this:

I created only one entrie for the two values: humidity and temperature, like this:

{
          "topicFilter": "v1/usr/openhouse/down",
          "converter": {
            "type": "json",
            "filterExpression": "",
            "deviceNameJsonExpression": "${$.cmdId}",
            "deviceTypeJsonExpression": "SF_TempHumi",
            "timeseries": [
              {
                "type": "double",
                "key": "humidity",
                "value": "${$.humidity[1]}"
              },
              {
                "type": "double",
                "key": "temperature",
                "value": "${$.temperature[1]}"
              }
            ]
          }
        }

Then I modified the source code in this class BasicJsonConverter in method getTsKvEntries:

String key = eval(document, mapping.getKey());
String strVal = eval(document, mapping.getValue());

if (strVal.contains("${")) {
    continue;
}

With this, when humidity has value but temperature not, temperature will be ignored and will not send the literal value to thingsboard(${$.temperature[1]}), only humidity will be send.

For me works, I know this is not the best solution, but for now helped me :)