rpc 通信和判题初步测试通过；判题服务器不再依赖 redis 和 mysql。

monitor/views.py

@@ -2,15 +2,15 @@
 import redis
 import datetime
 from rest_framework.views import APIView
-from judge.judger.result import result
-from judge.judger_controller.settings import redis_config
+from judge.result import result
+from django.conf import settings
 from utils.shortcuts import success_response
 from submission.models import Submission
 
 
 class QueueLengthMonitorAPIView(APIView):
     def get(self, request):
-        r = redis.Redis(host=redis_config["host"], port=redis_config["port"], db=redis_config["db"])
+        r = redis.Redis(host=settings.redis_config["host"], port=settings.redis_config["port"], db=settings.redis_config["db"])
         waiting_number = r.get("judge_queue_length")
         if waiting_number is None:
             waiting_number = 0