Existing devices not getting deleted

[sounak-1989]

Hey guys,

I am having a problem. Once I register some devices to core-metadata, even if I stop the device service or do a docker volume prune the devices still persist inside core-metadata.

This is an issue because even if I change my device profile I am unable to remove the old profile that lingers there. I have to send a delete command for each and every device to clean up the downed devices.

Is there a solution to this problem? I have not seen this issue before updating to Kamakura.

[cloudxxx8]

It's not an issue, becuase it works as desgin. core-metadata is the source of truth. You have to manage devices and device profiles through the core-metadata APIs. The pre-defined devices and device profiles in the Device services are just initializtion convenience for developers.
https://app.swaggerhub.com/apis-docs/EdgeXFoundry1/core-metadata/2.3.0

[cloudxxx8]

yes, you can retirieve the DeviceService instance
https://github.com/edgexfoundry/device-sdk-go/blob/b3f594a181df4350d50f9cefe1b70e34eb008ea7/pkg/service/service.go#L284
and call the related public APIs
https://github.com/edgexfoundry/device-sdk-go/blob/v2.3.1/pkg/service/manageddevices.go
https://github.com/edgexfoundry/device-sdk-go/blob/v2.3.1/pkg/service/managedprofiles.go

[sounak-1989]

yes, you can retirieve the DeviceService instance https://github.com/edgexfoundry/device-sdk-go/blob/b3f594a181df4350d50f9cefe1b70e34eb008ea7/pkg/service/service.go#L284 and call the related public APIs https://github.com/edgexfoundry/device-sdk-go/blob/v2.3.1/pkg/service/manageddevices.go https://github.com/edgexfoundry/device-sdk-go/blob/v2.3.1/pkg/service/managedprofiles.go

Thanks for the references.

[sounak-1989]

One more query. When I call any API from service.go it takes a while for EdgeX to register. For example if I am setting the operating state of a device to "DOWN" it shows in metadata after a while. The effect is not instant. Any reason why?

Thanks

[cloudxxx8]

The effect is instant in my environment. How do you check the delay?

[sounak-1989]

Figured it out. Something on my code. Thanks for the advice.