Re: [leshan-dev] Should Leshan just be used for management or data colle

[Andrew Chiw <andrew.work0@xxxxxxxxx>]

Do you mean the Leshan REST API provided at
http://localhost:8080/client/api/? That seems perfect for pulling data
from Leshan, but the Wiki FAQ says you're not supposed to use it. But
it also doesn't say what else one is supposed to do. Is one supposed
to write their own Java class that provides such an API?
https://github.com/eclipse/leshan/wiki/F.A.Q.

The REST API seems like the only option to get data out from Leshan,
though. Meanwhile, it seems other people playing with Leshan are also
basing their work on it:
http://robertsrhapsody.blogspot.com/2018/01/eclipse-leshan-rest-apis.html


Kind Regards,
The Chiwbaka
https://chiwbaka.com
On Wed, Oct 10, 2018 at 4:17 PM Simon Bernard <contact@xxxxxxxxxxxxxxx> wrote:
>
> Registration is a kind of session object, I suppose you don't want to
> store you data in this session object.
>
> About persisting device data, you should just use the send API of
> LeshanServer, get the response and then store it as you want.
> You will probably store the data by "device endpoint" and you will
> probably don't want to delete data when device deregister. This would be
> like if you delete all user data of web app when user logout.
>
> Le 10/10/2018 à 15:19, Andrew Chiw a écrit :
> > Thanks a lot Simon.
> > If Leshan only handles device registration, should I write something
> > external to actually get the data from the devices? But then
> > connecting the data received from the registrations that Leshan
> > received would be a pain.
> > If Leshan is a library, can it forward the responses from the devices
> > into a flat file/DB/some interprocess API, or do I have to write that
> > too?
> >
> > Kind Regards,
> > The Chiwbaka
> > https://chiwbaka.com
> >
> > On Wed, Oct 10, 2018 at 2:51 PM Simon Bernard <contact@xxxxxxxxxxxxxxx> wrote:
> >> Hi,
> >>
> >>      Leshan server does not store data read on devices.
> >>
> >>      It stores data like registration but not responses of requests.
> >>
> >>      You could see it like and http library which will store the session,
> >> allow you to send request and receive response. Up to you do to what you
> >> want with this data like storing it in a file or DB.
> >>
> >> Simon
> >>
> >> Le 10/10/2018 à 00:29, Andrew Chiw a écrit :
> >>> Hi everybody,
> >>> I'm looking at Leshan as a solution to manage data collection from IoT
> >>> devices. It's great because I can see it subscribing to data from a
> >>> device.
> >>>
> >>> But is Leshan meant to be used like that? To collect, manage the data
> >>> within Leshan would mean modifying it a lot. Isn't it perhaps better
> >>> design to simply use Leshan to collect the data, dump it out into a
> >>> SQL DB or a flat file for some other backend to process?
> >>>
> >>> How did you intend Leshan to be used in this case?
> >>>
> >>> Kind Regards,
> >>> Andrew Chiw
> >>> https://chiwbaka.com
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