修正dispatcher，使用redis存任务队列，修正submission的post，修改部分settings

oj/__init__.py

@@ -0,0 +1,6 @@
+from __future__ import absolute_import, unicode_literals
+
+# Django starts so that shared_task will use this app.
+from .celery import app as celery_app
+
+__all__ = ['celery_app']

oj/celery.py

@@ -0,0 +1,18 @@
+from __future__ import absolute_import, unicode_literals
+import os
+from celery import Celery
+from django.conf import settings
+
+# set the default Django settings module for the 'celery' program.
+os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'oj.settings')
+
+
+app = Celery('oj')
+
+# Using a string here means the worker will not have to
+# pickle the object when using Windows.
+app.config_from_object('django.conf:settings')
+
+# load task modules from all registered Django app configs.
+app.autodiscover_tasks(lambda: settings.INSTALLED_APPS)
+# app.autodiscover_tasks()

oj/db_router.py

@@ -1,19 +0,0 @@
-class DBRouter(object):
-    def db_for_read(self, model, **hints):
-        if model._meta.app_label == "submission":
-            return "submission"
-        return "default"
-
-    def db_for_write(self, model, **hints):
-        if model._meta.app_label == "submission":
-            return "submission"
-        return "default"
-
-    def allow_relation(self, obj1, obj2, **hints):
-        return True
-
-    def allow_migrate(self, db, app_label, model=None, **hints):
-        if app_label == "submission":
-            return db == app_label
-        else:
-            return db == "default"

oj/local_settings.py

@@ -34,16 +34,11 @@ CACHES = {
     }
 }
 
-REDIS_CACHE = {
-    "host": "127.0.0.1",
-    "port": 6379,
-    "db": 1
-}
-
+# For celery
 REDIS_QUEUE = {
     "host": "127.0.0.1",
     "port": 6379,
-    "db": 2
+    "db": 4
 }
 
 DEBUG = True

oj/settings.py

@@ -164,8 +164,6 @@ BROKER_URL = 'redis://%s:%s/%s' % (REDIS_QUEUE["host"], str(REDIS_QUEUE["port"])
 CELERY_ACCEPT_CONTENT = ["json"]
 CELERY_TASK_SERIALIZER = "json"
 
-DATABASE_ROUTERS = ['oj.db_router.DBRouter']
-
 IMAGE_UPLOAD_DIR = os.path.join(BASE_DIR, 'upload/')
 
 # 用于限制用户恶意提交大量代码