Azure IoT edge programmatically[NodeJS] create parent child relation between edge and leaf device

Question

I have found links from Azure GitHub repo that we can create relationship of parent child between Edge device and leaf device using Java and Python language but I have not found the api/interface to that in NodeJS sdk provided by Azure. Has anyone implemented this in NodeJS?

Answer 1

According to the REST API there is the deviceScope property:

The scope of the device. Auto generated and immutable for edge devices and modifiable in leaf devices to create child/parent relationship.

So try providing this property in the device object as e.g. here that is used for registry.create()

UPDATE: so this code works:

  var device = {
    deviceId: '<MY DEVICE ID>',
    deviceScope: 'ms-azure-iot-edge://<MY EDGE DEVICE ID>-xxxxxxxx'
  };

  registry.update(device, printAndContinue('update', function next(){...});

You can find the value of the deviceScope of your Edge Device in its Device Twin:

UPDATE

If you want to remove the parent/child relationship set deviceScope: null in your request