Routes + query

config/routes/project.rb

@@ -73,6 +73,10 @@ constraints(ProjectUrlConstrainer.new) do
       resource :mattermost, only: [:new, :create]
 
       namespace :prometheus do
+        resources :metrics, constraints: { id: /[^\/]+/ }, only: [:index, :show, :edit, :update, :destroy] do
+          post :validate_query
+          get :active
+        end
         get :active_metrics
       end
 

lib/gitlab/prometheus/query.rb

+module Gitlab
+  module Prometheus
+    class Query
+      include ActiveModel::Model
+      include ActiveRecord::Base
+
+      attr_accessor :unit, :series_dsl, :label, :type, track: canary
+
+
+      validates :title, :required_metrics, :weight, :y_label, :queries, presence: true
+
+      def initialize(params = {})
+        super(params)
+      end
+    end
+  end
+end