Quota Management

Modifies the management extension for Quotas to include
usage information and update return values to current
paradigms.

Change-Id: I39122673082544e33bec0d3d5070df2c17aacb55
Depends-On: I6ca1a87fbc46781f83bc9b7bd33745783b8aaab1
Implements blueprint: quota-management

releasenotes/notes/quota-management-3792cbc25ebe16bb.yaml

@@ -0,0 +1,4 @@
+features:
+  - New quota management APIs for reviewing and changing
+    the quota for a particular tenant.  Requires admin
+    privileges.

trove/extensions/mgmt/quota/service.py

@@ -36,8 +36,11 @@ class QuotaController(wsgi.Controller):
                    "req : '%(req)s'\n\n") % {
                        "id": id, "req": req})
 
-        quotas = quota_engine.get_all_quotas_by_tenant(id)
-        return wsgi.Result(views.QuotaView(quotas).data(), 200)
+        usages = quota_engine.get_all_quota_usages_by_tenant(id)
+        limits = quota_engine.get_all_quotas_by_tenant(id)
+        map(lambda r: setattr(usages[r], "limit", limits[r].hard_limit),
+            usages.keys())
+        return wsgi.Result(views.QuotaUsageView(usages).data(), 200)
 
     @admin_context
     def update(self, req, body, tenant_id, id):

trove/extensions/mgmt/quota/views.py

@@ -24,3 +24,16 @@ class QuotaView(object):
         for resource_name, quota in self.quotas.items():
             rtn[resource_name] = quota.hard_limit
         return {'quotas': rtn}
+
+
+class QuotaUsageView(object):
+
+    def __init__(self, usages):
+        self.usages = usages
+
+    def data(self):
+        return {'quotas': [{'resource': resource,
+                            'in_use': usage['in_use'],
+                            'reserved': usage['reserved'],
+                            'limit': usage['limit']
+                            } for resource, usage in self.usages.items()]}

trove/quota/quota.py

@@ -274,6 +274,15 @@ class QuotaEngine(object):
         return self._driver.get_all_quotas_by_tenant(tenant_id,
                                                      self._resources)
 
+    def get_all_quota_usages_by_tenant(self, tenant_id):
+        """Retrieve the quota usages for the given tenant.
+
+        :param tenant_id: The ID of the tenant to return quota usages for.
+        """
+
+        return self._driver.get_all_quota_usages_by_tenant(tenant_id,
+                                                           self._resources)
+
     def check_quotas(self, tenant_id, **deltas):
         self._driver.check_quotas(tenant_id, self._resources, deltas)
 

trove/tests/api/instances.py

@@ -277,7 +277,8 @@ class CreateInstanceQuotaTest(unittest.TestCase):
         new_quotas = dbaas_admin.quota.update(self.test_info.user.tenant_id,
                                               quota_dict)
 
-        verify_quota = dbaas_admin.quota.show(self.test_info.user.tenant_id)
+        set_quota = dbaas_admin.quota.show(self.test_info.user.tenant_id)
+        verify_quota = {q.resource: q.limit for q in set_quota}
 
         assert_equal(new_quotas['instances'], quota_dict['instances'])
         assert_equal(0, verify_quota['instances'])