How to get or set other micro service's insecure secret from application service sdk?

[jiekechoo]

The onvif-camera micro service needs to set a secret for the camera onvif protocol access, with my custom app-service, I need to get and set the onvif service's secret, because the custom app-service is the only way to communicate with the cloud.

I think that there are two ways for this:

1. write a OnvifClient like the DeviceClient in the app-function-sdk-go, using the onvif-camera service's API ;
2. Is there any api or function that I can set the secret for onvif-camera service in directly?

[lenny-goodell]

Best way is to use the Config Provider interface.

The scripts here are do this from the command-line assuming Consul is the Config Provider.
https://github.com/edgexfoundry/device-onvif-camera/tree/main/bin

[jiekechoo]

Yes. But how to make a request in the app-application-sdk-go by build-in function?

[lenny-goodell]

This call would never go into the App SDK.

If you have a need for this, you would put it in your custom App Service and simply make a REST call to the appropriate device service URL.

[jiekechoo]

Yes, I use the function utils.PostRequestWithRawData for making a REST call to the onvif-camera device service. https://github.com/edgexfoundry/go-mod-core-contracts/blob/b0286c308de37bd3d0f6157ee2560331f20d5af8/clients/http/utils/request.go#L113-L133

and, I added the device-onvif-camera connection info to configuration.yaml, how to get the device service's baseUrl in the application serivce? Can you give me some reference?

...
  device-onvif-camera:
    Protocol: 'http'
    Host: 'localhost'
    Port: 59984
    UserMessageBus: true
...

it's in the application service config:

// http://localhost:62801/api/v3/config

{
  "apiVersion": "v3",
...
    "Clients": {
      "core-command": {
        "Host": "localhost",
        "Port": 59882,
        "Protocol": "http",
        "UseMessageBus": true
      },
...
      "device-onvif-camera": {
        "Host": "localhost",
        "Port": 59984,
        "Protocol": "http",
        "UseMessageBus": false
      }
    }
...

[jiekechoo]

I got it.
The RegistryClient should be enabled before call the GetServiceEndpoint.

endPoint, err := registryClient.GetServiceEndpoint("device-onvif-camera")