Add Middle ware for tracking metriks.

lib/travis/api/app/middleware/metriks.rb

@@ -0,0 +1,22 @@
+require 'travis/api/app'
+
+class Travis::Api::App
+  class Middleware
+    class Metriks < Middleware
+      before do
+        env['metriks.request.start'] = Time.now.utc
+      end
+      
+      after do
+        if response.status < 400
+          time = Time.now.utc - env['metriks.request.start']
+          pattern = headers['X-Pattern'].gsub(/[:\/]/, ".")
+          metric = "api.request.endpoint.#{pattern}"
+          Metriks.timer(metric).update(time)
+          Metriks.meter("api.request.#{request.method}")
+        end
+        Metriks.meter("api.request.status.#{response.status.to_s[0]}")
+      end
+    end
+  end
+end