how do I query /zwave/driver/status

[lxrootard]

Hello

Many thanks for your great work on this lib.
I'm implementing a remote docker client that communicates through MQTT.
When I start zwave-js-ui after my code I get the /zwave/driver/status information, but when I start zwave-js-ui before my code I'm not notified although I've set RETAIN to true.

Is there a way to refresh this information?
Many thanks

[robertsLando]

I'm not notified although I've set RETAIN to true.

This is exactly what retain is used for, in general MQTT shouldn't be used as REST API (request --> response) but it's event based (something happens --> notify subscribers). Retain is used so subscribers once subscribe to a specific topic receive the last message published to that topic so they can always keep ther state in sync

[lxrootard]

@robertsLando not sure to understand your answer?
As I said I had set RETAIN to true. Am I missing something here or is this a bug?

The only alternative API I'm aware of is /health but correct me if I'm wrong there's no way to make a distinction between driver states?

[lxrootard]

Hello @robertsLando could you please advise?
Are there any options to check if the driver is ready using docker when the client connects after the lib's initial startup?
Thanks

[robertsLando]

@lxrootard What broker are you using? Does your broker stores retained messages on disk or on ram?

[robertsLando]

I've finally managed to solve my issue by issuing an extra zwave/driver/status/get. However I get no answer from zwave/_CLIENTS/ZWAVE_GATEWAY-<mqtt_name>/version ??

Sorry I don't undesrtand what you mean, I don't have any listener for such incoming message

Still zwave/_CLIENTS/ZWAVE_GATEWAY-<mqtt_name>/api/getInfo/set works ok

I think this is the correct api you have to use in order to manually query the driver status. Anyway if you only need to know if driver is ready or not the zwave/driver/status receives a payload of tree|false based on that.

[lxrootard]

I meant App Version in special topics:

App version
<mqtt_prefix>/_CLIENTS/ZWAVE_GATEWAY-<mqtt_name>/version

The payload will be in the time-value json format and the value will contain the app string version.

[robertsLando]

@lxrootard Are you using mqtt explorer? Please try to use it to be sure you don't have any typo on subscriptions, that will show you all the tags in a very user friendly tree view of topics

[lxrootard]

yes I'm using MQTT explorer
I believe I misunderstood your doc eg this topic can be subscribed but it can't be queried right?

[robertsLando]

I believe I misunderstood your doc eg this topic can be subscribed but it can't be queried right?

I don't undesrtand what you mean here, there is no way to 'query' a topic in mqtt