jemma.osgi.dal.web-apis: How to get data of all properties of all devices?

[Nhat Nguyen]

Hi JEMMA team,

As my understanding is that subscribing to events using websockets is to receive the changed values of subscribed events. However, I need to have all data of properties of all devices at the first time when the device list is being fetched. So based on these data I can show the status of each device.

For example, "DoorLock" has 2 statuses "OPEN", and "CLOSED". If its status is "OPEN", the switch button will be ON; and if it's "CLOSED", the button is OFF. Unfortunately, I have reviewed the ReadMe doc, I found no information that can help me to get over this obstacle.

https://github.com/ismb/jemma.osgi.dal.web-apis

It would be appreciated, if anyone can help me on this please?

Thanks & regards,

Nhat-

[Riccardo Tomasi]

Dear Nhat,

In general the pattern you described is correct: we always first fetch the status of the device of interest via the REST - then subscribe via websocket to get further updates.

I'm not sure I fully understand your obstacle though: could you please clarify ?

Riccardo

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Riccardo

[Nhat Nguyen]

Dear Riccardo, 

Could you give me an example of fetching property of one device via the REST please?

For example, in the fake devices demo, there is a device with following details:

dal.function.device.UID	dal.function.UID	dal.function.operation.names	dal.function.property.names
ZigBee:ah.app.12345195726903800-1	ZigBee:ah.app.12345195726903800-1:DoorLock	open,close	status

At the beginning, I'd like to get the "status" of "ZigBee:ah.app.12345195726903800-1:DoorLock", how could I do that? In the readme file on the github, I didn't see the instruction of how to get the data of properties except via WebSockets.

Thanks & regards,

Nhat