get rid of the activity stream middleware

it has bugs and is very confusing

see: https://github.com/ansible/tower/issues/4037

awx/main/middleware.py

@@ -12,23 +12,19 @@ import urllib.parse
 
 from django.conf import settings
 from django.contrib.auth.models import User
-from django.db.models.signals import post_save
 from django.db.migrations.executor import MigrationExecutor
-from django.db import IntegrityError, connection
-from django.utils.functional import curry
+from django.db import connection
 from django.shortcuts import get_object_or_404, redirect
 from django.apps import apps
 from django.utils.deprecation import MiddlewareMixin
 from django.utils.translation import ugettext_lazy as _
 from django.urls import reverse, resolve
 
-from awx.main.models import ActivityStream
 from awx.main.utils.named_url_graph import generate_graph, GraphNode
 from awx.conf import fields, register
 
 
 logger = logging.getLogger('awx.main.middleware')
-analytics_logger = logging.getLogger('awx.analytics.activity_stream')
 perf_logger = logging.getLogger('awx.analytics.performance')
 
 
@@ -76,63 +72,6 @@ class TimingMiddleware(threading.local, MiddlewareMixin):
         return filepath
 
 
-class ActivityStreamMiddleware(threading.local, MiddlewareMixin):
-
-    def __init__(self, get_response=None):
-        self.disp_uid = None
-        self.instance_ids = []
-        super().__init__(get_response)
-
-    def process_request(self, request):
-        if hasattr(request, 'user') and request.user.is_authenticated:
-            user = request.user
-        else:
-            user = None
-
-        set_actor = curry(self.set_actor, user)
-        self.disp_uid = str(uuid.uuid1())
-        self.instance_ids = []
-        post_save.connect(set_actor, sender=ActivityStream, dispatch_uid=self.disp_uid, weak=False)
-
-    def process_response(self, request, response):
-        drf_request = getattr(request, 'drf_request', None)
-        drf_user = getattr(drf_request, 'user', None)
-        if self.disp_uid is not None:
-            post_save.disconnect(dispatch_uid=self.disp_uid)
-
-        for instance in ActivityStream.objects.filter(id__in=self.instance_ids):
-            if drf_user and drf_user.id:       
-                from awx.api.serializers import ActivityStreamSerializer
-                summary_fields = ActivityStreamSerializer(instance).get_summary_fields(instance)
-                instance.actor = drf_user
-                try:
-                    instance.save(update_fields=['actor'])
-                    analytics_logger.info('Activity Stream update entry for %s' % str(instance.object1),
-                                          extra=dict(changes=instance.changes, relationship=instance.object_relationship_type,
-                                          actor=drf_user.username, operation=instance.operation,
-                                          object1=instance.object1, object2=instance.object2, summary_fields=summary_fields))
-                except IntegrityError:
-                    logger.debug("Integrity Error saving Activity Stream instance for id : " + str(instance.id))
-            # else:
-            #     obj1_type_actual = instance.object1_type.split(".")[-1]
-            #     if obj1_type_actual in ("InventoryUpdate", "ProjectUpdate", "Job") and instance.id is not None:
-            #         instance.delete()
-
-        self.instance_ids = []
-        return response
-
-    def set_actor(self, user, sender, instance, **kwargs):
-        if sender == ActivityStream:
-            if isinstance(user, User) and instance.actor is None:
-                user = User.objects.filter(id=user.id)
-                if user.exists():
-                    user = user[0]
-                    instance.actor = user
-            else:
-                if instance.id not in self.instance_ids:
-                    self.instance_ids.append(instance.id)
-
-
 class SessionTimeoutMiddleware(MiddlewareMixin):
     """
     Resets the session timeout for both the UI and the actual session for the API

awx/main/signals.py

@@ -52,6 +52,7 @@ from awx.conf.utils import conf_to_dict
 __all__ = []
 
 logger = logging.getLogger('awx.main.signals')
+analytics_logger = logging.getLogger('awx.analytics.activity_stream')
 
 # Update has_active_failures for inventory/groups when a Host/Group is deleted,
 # when a Host-Group or Group-Group relationship is updated, or when a Job is deleted
@@ -363,6 +364,22 @@ def model_serializer_mapping():
     }
 
 
+def emit_activity_stream_change(instance):
+    if 'migrate' in sys.argv:
+        # don't emit activity stream external logs during migrations, it
+        # could be really noisy
+        return
+    from awx.api.serializers import ActivityStreamSerializer
+    actor = None
+    if instance.actor:
+        actor = instance.actor.username
+    summary_fields = ActivityStreamSerializer(instance).get_summary_fields(instance)
+    analytics_logger.info('Activity Stream update entry for %s' % str(instance.object1),
+                          extra=dict(changes=instance.changes, relationship=instance.object_relationship_type,
+                          actor=actor, operation=instance.operation,
+                          object1=instance.object1, object2=instance.object2, summary_fields=summary_fields))
+
+
 def activity_stream_create(sender, instance, created, **kwargs):
     if created and activity_stream_enabled:
         # TODO: remove deprecated_group conditional in 3.3
@@ -399,6 +416,9 @@ def activity_stream_create(sender, instance, created, **kwargs):
         else:
             activity_entry.setting = conf_to_dict(instance)
             activity_entry.save()
+        connection.on_commit(
+            lambda: emit_activity_stream_change(activity_entry)
+        )
 
 
 def activity_stream_update(sender, instance, **kwargs):
@@ -430,6 +450,9 @@ def activity_stream_update(sender, instance, **kwargs):
     else:
         activity_entry.setting = conf_to_dict(instance)
         activity_entry.save()
+    connection.on_commit(
+        lambda: emit_activity_stream_change(activity_entry)
+    )
 
 
 def activity_stream_delete(sender, instance, **kwargs):
@@ -467,6 +490,9 @@ def activity_stream_delete(sender, instance, **kwargs):
         object1=object1,
         actor=get_current_user_or_none())
     activity_entry.save()
+    connection.on_commit(
+        lambda: emit_activity_stream_change(activity_entry)
+    )
 
 
 def activity_stream_associate(sender, instance, **kwargs):
@@ -540,6 +566,9 @@ def activity_stream_associate(sender, instance, **kwargs):
                 activity_entry.role.add(role)
                 activity_entry.object_relationship_type = obj_rel
                 activity_entry.save()
+            connection.on_commit(
+                lambda: emit_activity_stream_change(activity_entry)
+            )
 
 
 @receiver(current_user_getter)

awx/main/tests/functional/api/test_activity_streams.py

@@ -1,7 +1,6 @@
 import pytest
 
 from awx.api.versioning import reverse
-from awx.main.middleware import ActivityStreamMiddleware
 from awx.main.models.activity_stream import ActivityStream
 from awx.main.access import ActivityStreamAccess
 from awx.conf.models import Setting
@@ -61,28 +60,6 @@ def test_ctint_activity_stream(monkeypatch, get, user, settings):
     assert response.data['summary_fields']['setting'][0]['name'] == 'FOO'
 
 
-@pytest.mark.django_db
-def test_middleware_actor_added(monkeypatch, post, get, user, settings):
-    settings.ACTIVITY_STREAM_ENABLED = True
-    u = user('admin-poster', True)
-
-    url = reverse('api:organization_list')
-    response = post(url,
-                    dict(name='test-org', description='test-desc'),
-                    u,
-                    middleware=ActivityStreamMiddleware())
-    assert response.status_code == 201
-
-    org_id = response.data['id']
-    activity_stream = ActivityStream.objects.filter(organization__pk=org_id).first()
-
-    url = reverse('api:activity_stream_detail', kwargs={'pk': activity_stream.pk})
-    response = get(url, u)
-
-    assert response.status_code == 200
-    assert response.data['summary_fields']['actor']['username'] == 'admin-poster'
-
-
 @pytest.mark.django_db
 def test_rbac_stream_resource_roles(activity_stream_entry, organization, org_admin, settings):
     settings.ACTIVITY_STREAM_ENABLED = True

awx/settings/defaults.py

@@ -1229,7 +1229,6 @@ MIDDLEWARE = [
     'django.middleware.csrf.CsrfViewMiddleware',
     'django.contrib.auth.middleware.AuthenticationMiddleware',
     'django.contrib.messages.middleware.MessageMiddleware',
-    'awx.main.middleware.ActivityStreamMiddleware',
     'awx.sso.middleware.SocialAuthMiddleware',
     'crum.CurrentRequestUserMiddleware',
     'awx.main.middleware.URLModificationMiddleware',