December 18th conference call

Attendees

Marco presented the way Device Management is currently done in Kura:
- A request/response model on top of MQTT allows to address each device individually from the cloud, and perform DM commands. Kura allows remote OSGi control with features like start/stop of bundles, remote shell access, ...
- In his spare time Marco has done some experiments with the Leshan Java client to expose OSGi bundles as LwM2M objects. The code is availabe in this Kura branch: https://github.com/eclipse/kura/tree/lwm2m
Implementing LwM2M over MQTT will be a two-step process:

Implement a request/response model on top of MQTT, providing the ability for an application to send a request to a specific device
Implement a REST model (GET, PUT, POST, DELETE) for CRUD operations, including EXECUTE

Peter N. highlights that it would be good to do a gap analysis between the request/response model implemented in MQTT and the CoAP model to make sure all use cases are covered. Similarly, we'll need to check there are no redundancies between the LwM2M and MQTT layers.
Dave Locke has already been talking with Zach Shelby (ARM) who is involved in the LwM2M specification and he is supportive of a specification for an MQTT binding for LwM2M
There were discussions regarding where will be the best place to push the specification of a LwM2M over MQTT binding. The natural place would probably be OMA.
Marco suggests that we try to have a face-to-face meeting next year.

Marco will send to the group the documentation of the current implementation of DM over MQTT in Kura. This documentation will be publicly available as part of Kura shortly.
Marco will initiate a page in the Kura wiki to start collect requirements
Benjamin will organize the next conference call in January.