v2.1 adds the ability for an external MQTT client to subscribe to a topic. JEDI One topics include all data coming into JEDI One from any source (not just MQTT). From within the MQTT client code or application, subscribe to a topic as follows:
For a specific data stream:
datacache/TargetID/#
Where datacache is the fixed, top level topic from JEDI One, and TargetID is the TargetID or IP address of the data stream of interest.
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Example:
Using MQTT Explorer, here is how to subscribe to the data stream, ESP32SensorUV1 on a JEDI system at IP address 192.168.1.51. Create the connection (for this example, this is an unencrypted, standard MQTT connection with a username and password as specified in the JEDI One MQTT Broker data collector setup).
Now click on ADVANCED:
Please note, MQTT Explorer by default subscribes to all topics using the wildcard, #. Delete this entry.
Enter the desired topic as described above. For this example, the topic is subscribing to a metric (TargetID = ESP32SensorUV1) that has multiple properties so # is used at the end of the topic string:
Click BACK, and then CONNECT. Here are the results:
