Preparation to bower release
diff --git a/src/services/service_graph.service.js b/src/services/service_graph.service.js
new file mode 100644
index 0000000..8a732a2
--- /dev/null
+++ b/src/services/service_graph.service.js
@@ -0,0 +1,44 @@
+(function() {
+  'use strict';
+
+  /**
+  * @ngdoc service
+  * @name xos.helpers.ServiceGraph
+  * @description This factory define a set of helper function to query the service tenancy graph
+  **/
+
+  angular
+  .module('xos.helpers')
+  .service('GraphService', function($q, Tenants, Services) {
+
+    this.loadCoarseData = () => {
+
+      let services;
+
+      let deferred = $q.defer();
+
+      Services.query().$promise
+      .then((res) => {
+        services = res;
+        return Tenants.query({kind: 'coarse'}).$promise;
+      })
+      .then((tenants) => {
+        deferred.resolve({
+          tenants: tenants,
+          services: services
+        });
+      })
+
+      return deferred.promise;
+    }
+
+    this.getCoarseGraph = () => {
+      this.loadCoarseData()
+      .then((res) => {
+        console.log(res);
+      })
+      return 'ciao';
+    };
+
+  })
+})();