Allowing to use query parameters as further filter to select the right Environment from EnvironmentRepository

Problem

I have to access to config server besides springboot applications also from SPA (AngularJS).

I've used the REST api provided out-of-box from config server but the triad application/profile/label seem to me is not enough to express the complexity coming out from my requirements.

Requirements

Acquire configuration from the same app installed in different devices where configuration is different depending from deviceId and location

The natural solution that I've imaged was to call api like application/profile/label?device=x&location=y but I haven't found a simple way to achieve that.

Solution

The solution that I've figured out are:

1. try to use profile and/or label like Json object (eg. application/profile/{label:'',device:'',location:''})
2. publish a custom endpoint from my config server
3. Add a filter and use stuff like ThreadLocal

Proposal

During this analysis I've figured out that if the Request object will be passed to findOne(String application, String profile, String label); method of EnvironmentRepository this allowing to use query parameters as further filter to select the right Environment

The proposal is to extends the EnvironmentRepository interface as show below

public interface EnvironmentRepository {

	Environment findOne(String application, String profile, String label);

	default Environment findOne(Request request, String application, String profile, String label) {
                 return findOne(application, profile, label);
         }

}

and update ResourceController accordly with new interface

Start by reviewing the EnvironmentRepository interface and ResourceController, then inspect the existing findOne implementations and how requests reach the controller. Determine how query parameters should be passed without breaking the current method, and consider the existing comment discussion before defining done as repository implementations being able to use the request data through the REST endpoint.