Assign tasks to specific queues. Add support for transient queues. gh-issue #222, gh-issue #230.

mayan/apps/mailer/apps.py

@@ -1,10 +1,13 @@
 from __future__ import unicode_literals
 
+from kombu import Exchange, Queue
+
 from django.utils.translation import ugettext_lazy as _
 
 from acls import ModelPermission
 from common import MayanAppConfig, menu_object
 from documents.models import Document
+from mayan.celery import app
 
 from .links import link_send_document_link, link_send_document
 from .permissions import (
@@ -25,4 +28,16 @@ class MailerApp(MayanAppConfig):
             )
         )
 
+        app.conf.CELERY_QUEUES.append(
+            Queue('mailing', Exchange('mailing'), routing_key='mailing'),
+        )
+
+        app.conf.CELERY_ROUTES.update(
+            {
+                'mailer.tasks.task_send_document': {
+                    'queue': 'mailing'
+                },
+            }
+        )
+
         menu_object.bind_links(links=[link_send_document_link, link_send_document], sources=[Document])