Pass MessageClient to config provider

[jinlinGuan]

🚀 Feature Request

Relevant Package [REQUIRED]

This feature request is for all

Description [REQUIRED]

We implemented a new config provider which uses the message bus to watch for configuration changes.
It would be better if the go-mod-bootstrap can find a way to pass the Message Client to the config provider, because the config provider doesn't have the capability to retrieve credentials.
It also can allow the additional metrics collected from the config provider, such as configuration change times.

Describe the solution you'd like

TBD

[cloudxxx8]

@lenny-intel could you please provide the suggestion about how to implement it? is it possible to pass a messageClient channel to the configuration provider?

[lenny-goodell]

@cloudxxx8 , my understanding is your Config Provider Client implementation is subscribing to the changes via the MessageBus, correct?
I see a major issue with this in that the MessageBus config is stored in the Configuration Provider. So the your Client has to be created in order to get the MessageBus configuration. This gets even more complicated in secure mode with connecting to the Secure MessageBus.

Please add this to the agenda for this weeks Core WG.

[cloudxxx8]

we can try to pass a subscription function as callback to WaitForChange???

[cloudxxx8]

move to icebox, because the effort of implementing this feature is large