Make deprecated scopes of Runner explicit

app/models/ci/runner.rb

@@ -30,9 +30,9 @@ module Ci
     scope :ordered, -> { order(id: :desc) }
 
     # BACKWARD COMPATIBILITY: There are needed to maintain compatibility with `AVAILABLE_SCOPES` used by `lib/api/runners.rb`
-    scope :shared, -> { instance_type }
+    scope :deprecated_shared, -> { instance_type }
     # this should get replaced with `project_type.or(group_type)` once using Rails5
-    scope :specific, -> { where(runner_type: [runner_types[:project_type], runner_types[:group_type]]) }
+    scope :deprecated_specific, -> { where(runner_type: [runner_types[:project_type], runner_types[:group_type]]) }
 
     scope :belonging_to_project, -> (project_id) {
       joins(:runner_projects).where(ci_runner_projects: { project_id: project_id })

lib/api/runners.rb

@@ -170,6 +170,11 @@ module API
           render_api_error!('Scope contains invalid value', 400)
         end
 
+        # Support deprecated scopes
+        if runners.respond_to?("deprecated_#{scope}")
+          scope = "deprecated_#{scope}"
+        end
+
         runners.public_send(scope) # rubocop:disable GitlabSecurity/PublicSend
       end
 

spec/requests/api/runners_spec.rb

@@ -89,6 +89,17 @@ describe API::Runners do
         end
       end
 
+      it 'filters runners by scope' do
+        get api('/runners/all?scope=shared', admin)
+
+        shared = json_response.all? { |r| r['is_shared'] }
+        expect(response).to have_gitlab_http_status(200)
+        expect(response).to include_pagination_headers
+        expect(json_response).to be_an Array
+        expect(json_response[0]).to have_key('ip_address')
+        expect(shared).to be_truthy
+      end
+
       it 'filters runners by scope' do
         get api('/runners/all?scope=specific', admin)
 
@@ -584,7 +595,7 @@ describe API::Runners do
           end
         end
 
-        it 'enables a instance-wide runner' do
+        it 'enables a instance type runner' do
           expect do
             post api("/projects/#{project.id}/runners", admin), runner_id: shared_runner.id
           end.to change { project.runners.count }.by(1)