Improve events handling

CHANGELOG.rst

@@ -9,6 +9,8 @@ This document describes changes between each past release.
 **Bug fixes**
 
 - Fix Redis get_accessible_object implementation (#725)
+- Fix bug where the resource events of a request targetting two groups/collection
+  from different buckets would be grouped together.
 
 
 3.3.1 (2016-07-19)

kinto/core/events.py

@@ -24,6 +24,11 @@ def __init__(self, payload, request):
         self.payload = payload
         self.request = request
 
+    def __repr__(self):
+        return "<{klass} action={action} uri={uri}>".format(
+            klass=self.__class__.__name__,
+            **self.payload)
+
 
 class ResourceRead(_ResourceEvent):
     """Triggered when a resource is being read.
@@ -118,7 +123,8 @@ def get_resource_events(request, after_commit=False):
     return events
 
 
-def notify_resource_event(request, timestamp, data, action, old=None):
+def notify_resource_event(request, parent_id, timestamp, data, action,
+                          old=None):
     """
     Request helper to stack a resource event.
 
@@ -141,10 +147,11 @@ def notify_resource_event(request, timestamp, data, action, old=None):
 
     # Get previously triggered events.
     events = request.bound_data.setdefault("resource_events", OrderedDict())
+
     resource_name = request.current_resource_name
 
     # Group events by resource and action.
-    group_by = resource_name + action.value
+    group_by = resource_name + parent_id + action.value
 
     if group_by in events:
         # Add to impacted records of existing event.

kinto/core/resource/__init__.py

@@ -653,7 +653,9 @@ def postprocess(self, result, action=ACTIONS.READ, old=None):
             'data': result
         }
 
-        self.request.notify_resource_event(timestamp=self.timestamp,
+        parent_id = self.get_parent_id(self.request)
+        self.request.notify_resource_event(parent_id=parent_id,
+                                           timestamp=self.timestamp,
                                            data=result,
                                            action=action,
                                            old=old)

kinto/tests/core/resource/test_events.py

@@ -93,6 +93,13 @@ class ResourceChangedTest(BaseEventTest, unittest.TestCase):
 
     subscribed = (ResourceChanged,)
 
+    def test_events_have_custom_representation(self):
+        self.app.post_json(self.collection_url, self.body,
+                           headers=self.headers, status=201)
+        self.assertEqual(repr(self.events[0]),
+                         "<ResourceChanged action=create "
+                         "uri=%s>" % self.collection_url)
+
     def test_post_sends_create_action(self):
         self.app.post_json(self.collection_url, self.body,
                            headers=self.headers, status=201)
@@ -352,6 +359,25 @@ def test_one_event_is_sent_per_resource(self):
         self.app.post_json("/batch", body, headers=self.headers)
         self.assertEqual(len(self.events), 2)
 
+    def test_one_event_is_sent_per_parent_id(self):
+        # /mushrooms is a UserResource (see testapp.views), which means
+        # that parent_id depends on the authenticated user.
+        body = {
+            "defaults": {
+                "path": '/mushrooms',
+                "method": "POST",
+                "body": self.body
+            },
+            "requests": [
+                {"headers": {"Authorization": "Basic bWF0OjE="}},
+                {"headers": {"Authorization": "Basic dG90bzp0dXR1"}},
+                {"headers": {"Authorization": "Basic bWF0OjE="}},
+            ]
+        }
+        self.app.post_json("/batch", body, headers=self.headers)
+        # Two different auth headers, thus two different parent_id:
+        self.assertEqual(len(self.events), 2)
+
     def test_one_event_is_sent_per_action(self):
         body = {
             "defaults": {