Remove the class Service in favor of service_type ENUM #302

server/extension/sql/200_quotas.sql

@@ -1,3 +1,11 @@
+CREATE TYPE cdb_dataservices_server.service_type AS ENUM (
+  'isolines',
+  'hires_geocoder',
+  'routing',
+  'observatory',
+  'internal_geocoder'
+);
+
 CREATE TYPE cdb_dataservices_server.service_params AS (
   monthly_quota NUMERIC,
   used_quota NUMERIC,

server/lib/python/cartodb_services/cartodb_services/metrics/quota.py

@@ -3,15 +3,6 @@ from log import MetricsDataGatherer
 from datetime import date
 import re
 
-class Service:
-    """The services bound to quota"""
-
-    ISOLINES = 'isolines'
-    HIRES_GEOCODER = 'hires_geocoder'
-    ROUTING = 'routing'
-    OBSERVATORY = 'observatory'
-    INTERNAL_GEOCODER = 'internal_geocoder'
-
 
 class QuotaService:
     """ Class to manage all the quota operation for