Add support for variables, "+" and "#"

grafana / mqtt-datasource

MQTT Datasource for Grafana allows streaming data from any MQTT broker running either locally or remotely.

Apache License 2.0

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Closed NiklasCi closed 3 months ago

NiklasCi commented 4 months ago

This PR adds support for

variable support via overwriting the applyTemplateVariable function of the class DataSource.
- Now topics can contain variables. E.g.: tlm/${Device}/measurement
- Single selection and all selection for repeating panels works
+ operator of mqtt
- e.g. tlm/+/measurement or tlm/+/measurement/+
# operator of mqtt
- e.g. tlm/device1/#