Weblog#

Gateway Contract and Leshan 2.0.0-M18#

Behavior changes of the Leshan gateway and its contract to Django (Gateway Contract):

The gateway runs Leshan 2.0.0-M18, Jetty 12 and Java 25.
Golden files in contract/gateway record the gateway behavior; the E2E suite and the Django tests check both sides against them. Java unit tests cover the gateway’s command mapping, write parser and ingest retry.
A command that the device rejects ends as FAILED in Django. Before, the gateway answered HTTP 200 and Django recorded CONFIRMED.
The gateway posts registration events to /flownexus/ingest/registration instead of object 10240 readings.
Django reads the Device object after a registration. The gateway no longer reads /3 or sets observations on its own.
A device that registers again without deregistering, for example after a reboot, stays registered in Django. Late registration events no longer change the registration state.
An invalid command request (unknown format, bad timeout, mismatched resource ID) is answered with 400 and ends as FAILED in Django.
The gateway retries ingest requests for about one minute while Django is unavailable.
Operations can target object instances other than 0.
Django skips resources without a resource type instead of rejecting the whole request.
The demo servlets (events, object specs, client listing and the other LwM2M operations) are removed. The command API serves read, write and execute.

First release of the project. This is a development release.

Created a flownexus logo.
Generic database model for LwM2M objects.
Added a frontend mockup based on AtminLTE.
ReST APIs inbetween Leshan and Django.
Asynchronous task queue for Endpoint interactions from Django via Celery.
Bidirectional communication between L2M2M endpoints and Django via Leshan.
Subscribe to single and composite Observations in Leshan statically.
OTA Update functionality on the server side. Full-functioning firmware example pending.

Switched the new documentation to Sphinx-Book-Theme for better readability and navigation.
Added a new section for the weblog to keep track of updates and changes in the project.