Mastering Internet of Things

Updating a registration

After a thing has been registered, we can update the registration as many times as we want. We can only update our own registration. The difference between a registration and an update is that a registration rewrites the complete set of metadata for the device, while an update only changes, updates, or adds tags to the set, but it does not remove tags not mentioned. Updates only work if there's a previous registration, however. If the update procedure fails, we try to re-register the thing instead:

private void UpdateRegistration(MetaDataTag[] MetaInfo) { Log.Informational("Updating registration of device."); this.registryClient.UpdateThing(MetaInfo, (sender, e) => { if (e.Ok) Log.Informational( "Registration update ...