celery: set default config values in code and remove them from the generated .ini

It is hard to imagine any reason the user should change celery.imports . And if
it ever should change, we want it controlled in code - not left stale in user
controlled config files.

Everybody sould just use .json and there is no reason anybody should specify
that in the .ini ... and it will be the default in Celery 4.

development.ini

@@ -255,11 +255,7 b' use_celery = false'
 ## Example: connect to the virtual host 'rabbitmqhost' on localhost as rabbitmq:
 broker.url = amqp://rabbitmq:qewqew@localhost:5672/rabbitmqhost
 
-celery.imports = kallithea.lib.celerylib.tasks
-celery.accept.content = json
 celery.result.backend = amqp://
-celery.result.serializer = json
-celery.task.serializer = json
 
 #celery.send.task.error.emails = true
 #celery.amqp.task.result.expires = 18000

kallithea/lib/celerypylons/__init__.py

@@ -18,15 +18,16 b' import celery'
 import tg
 
 
+class CeleryConfig(object):
+    CELERY_IMPORTS = ['kallithea.lib.celerylib.tasks']
+    CELERY_ACCEPT_CONTENT = ['json']
+    CELERY_RESULT_SERIALIZER = 'json'
+    CELERY_TASK_SERIALIZER = 'json'
+
+
 def celery_config(config):
     """Return Celery config object populated from relevant settings in a config dict, such as tg.config"""
 
-    # Verify .ini file configuration has been loaded
-    assert config['celery.imports'] == 'kallithea.lib.celerylib.tasks', 'Kallithea Celery configuration has not been loaded'
-
-    class CeleryConfig(object):
-        pass
-
     celery_config = CeleryConfig()
 
     PREFIXES = """ADMINS BROKER CASSANDRA CELERYBEAT CELERYD CELERYMON CELERY EMAIL SERVER""".split()

kallithea/lib/paster_commands/template.ini.mako

@@ -361,11 +361,7 b' use_celery = false'
 <%text>## Example: connect to the virtual host 'rabbitmqhost' on localhost as rabbitmq:</%text>
 broker.url = amqp://rabbitmq:qewqew@localhost:5672/rabbitmqhost
 
-celery.imports = kallithea.lib.celerylib.tasks
-celery.accept.content = json
 celery.result.backend = amqp://
-celery.result.serializer = json
-celery.task.serializer = json
 
 #celery.send.task.error.emails = true
 #celery.amqp.task.result.expires = 18000