Enable Auto Discovery for PI Adapter for MQTT SparkplugB to always listen for Birth and Death messages
When utilizing the SparkplugB protocol for MQTT, it would be beneficial for the adapter to be always listening for birth and death messages from specific Edge of Network nodes.
This way, the device can send a birth message to have itself added to the data selection array, then a death message to have itself removed. This would enforce a data selection array that's always reflecting the current state of devices connected to the broker, doesn't miss any data messages, and doesn't bloat over time.
Kelsey Duffy
shared this idea
We would like to collect more use cases for this feature. Please share in the comments section.
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Thomassorensen
commented
We've been using the PI Connector for a while before switching over to Adaptor, and this is one of the most critical features missing from the Adaptor, that is currently only available with the Collector.
It should be possible to define an "autoAddTopicFilters" array, where metrics that satisfies the filter will automatically be added to the data selection array.
Today we have to manually open Postman, find our internal instructions on how the JSON format for a discovery looks like, and start a discovery. This whole manual process is tedious, adds a lot of extra work for us, and is completely unnecessary.
If the "autoAddTopicFilters" array was implemented, then new tags, would automatically be available in PI as soon as we make changes or add/remove metrics from one of our EoN nodes. The fact that no configuration would be required after the Adaptor has initially been setup, would save us a good amount of manual work.
The idea to remove tags that are no longer available in the EoN would make the solution even better (maybe mark the tag OFF SCAN?) as it gives us an overview of which metrics are currently available from the EoN.