Added new ResolveServiceWithInformation API to discovery service (#51)

* Feat: Add new ResolveServiceWithInformation API to discovery service

* Fix: Updated request and response messages

* Fix: Provided clear descriptive comments.

* Fix: Name change

* Fix: review comments

* Fix: Spacing

ni/measurementlink/discovery/v1/discovery_service.proto

@@ -50,6 +50,11 @@ service DiscoveryService {
   // - FAILED_PRECONDITION: More than one service matching the resolve request was found
   rpc ResolveService(ResolveServiceRequest) returns (ServiceLocation);
 
+  // Similar to ResolveService, returns information for the service in addition to the location of the service. 
+  // This is useful if you want to avoid the overhead of having to call EnumerateServices to get this information as part of
+  // resolution of the service. See ResolveService for additional documentation related to resolving the service.
+  rpc ResolveServiceWithInformation(ResolveServiceWithInformationRequest) returns (ResolveServiceWithInformationResponse);
+
   // Enumerate all compute nodes that have registered themselves in the current session.
   // These compute nodes are targets available for execution of services.
   // A compute node can be used as an argument to the ResolveService method to
@@ -160,6 +165,31 @@ message ResolveServiceRequest {
   string deployment_target = 3;
 }
 
+message ResolveServiceWithInformationRequest {
+  // Required. This corresponds to the gRPC Full Name of the service and should match the information
+  // that was supplied in the RegisterServiceRequest message.
+  string provided_interface = 1;
+
+  // Optional. The service "class" that should be matched. If the value of this field is not specified and there
+  // is more than one matching service registered, an error is returned.
+  string service_class = 2;
+
+  // Optional. Indicates the deployment target from which the service should be resolved.
+  // The value of this field can be obtained from the results of the EnumerateComputeNodes method.
+  // If the value of this field is not specified, the service will be resolved from the
+  // local deployment target.  If the service cannot be resolved from the specified deployment
+  // target, an error is returned.
+  string deployment_target = 3;
+}
+
+message ResolveServiceWithInformationResponse {
+  // The canonical location information of the service.
+  ServiceLocation service_location = 1;
+
+  // The description of the service.
+  ServiceDescriptor service_descriptor = 2;
+}
+
 // Represents a location capable resolving and running a service.
 message ComputeNodeDescriptor {
   // The resolvable name of the compute node.