add apps:calculate functionality

Author: Gabriel Monroy

api/tests/app.py

@@ -135,6 +135,14 @@ def test_app_actions(self):
         response = self.client.post(url, json.dumps(body), content_type='application/json')
         self.assertEqual(response.status_code, 200)
         self.assertEqual(response.data[1], 0)
+        # test calculate
+        url = '/api/apps/{app_id}/calculate'.format(**locals())
+        response = self.client.post(url)
+        self.assertEqual(response.status_code, 200)
+        databag = response.data
+        self.assertIn('release', databag)
+        self.assertIn('version', databag['release'])
+        self.assertIn('containers', databag)
 
     def test_app_errors(self):
         formation_id, app_id = 'autotest', 'autotest-errors'

api/urls.py

@@ -313,6 +313,8 @@
         views.AppViewSet.as_view({'post': 'logs'})),
     url(r'^apps/(?P<id>[a-z0-9-]+)/run/?',
         views.AppViewSet.as_view({'post': 'run'})),
+    url(r'^apps/(?P<id>[a-z0-9-]+)/calculate/?',
+        views.AppViewSet.as_view({'post': 'calculate'})),
     # apps base endpoint
     url(r'^apps/(?P<id>[a-z0-9-]+)/?',
         views.AppViewSet.as_view({'get': 'retrieve', 'delete': 'destroy'})),

api/views.py

@@ -280,6 +280,12 @@ def scale(self, request, **kwargs):
         return Response(databag, status=status.HTTP_200_OK,
                         content_type='application/json')
 
+    def calculate(self, request, **kwargs):
+        app = self.get_object()
+        databag = app.calculate()
+        return Response(databag, status=status.HTTP_200_OK,
+                        content_type='application/json')
+
     def logs(self, request, **kwargs):
         app = self.get_object()
         try:

client/deis.py

@@ -354,6 +354,25 @@ def apps(self, args):
         """
         return self.apps_list(args)
 
+    def apps_calculate(self, args, quiet=False):
+        """
+        Calculate the application's JSON representation
+
+        Usage: deis apps:calculate [--app=<app>]
+        """
+        app = args.get('--app')
+        if not app:
+            app = self._session.app
+        response = self._dispatch('post',
+                                  "/api/apps/{}/calculate".format(app))
+        if response.status_code == requests.codes.ok:  # @UndefinedVariable
+            databag = json.loads(response.content)
+            if quiet is False:
+                print(json.dumps(databag, indent=2))
+            return databag
+        else:
+            raise ResponseError(response)
+
     def apps_create(self, args):
         """
         Create a new application
@@ -1604,6 +1623,7 @@ def parse_args(cmd):
         'ps': 'containers:list',
         'scale': 'containers:scale',
         'converge': 'formations:converge',
+        'calculate': 'apps:calculate',
     }
     if cmd == 'help':
         cmd = sys.argv[-1]