use new url name

docker-compose.example.yml

@@ -19,8 +19,8 @@ services:
             - /data/log:/log
             - $PWD/server:/code:ro
         environment:
-            - service_discovery_url=http://127.0.0.1:8000/api/judge_server_heartbeat
-            - service_url=http://127.0.0.1:12358
+            - backend_url=http://backend:8000/api/judge_server_heartbeat
+            - service_url=http://judge-server:12358
             - TOKEN=YOUR_TOKEN_HERE
         ports:
             - "0.0.0.0:12358:8080"

server/service.py

@@ -11,17 +11,13 @@ from utils import server_info, logger, token
 
 class JudgeService(object):
     def __init__(self):
-        self.service_url = os.environ.get("service_url")
-        self.service_discovery_url = os.environ.get("service_discovery_url")
-
-        if not self.service_url or not self.service_discovery_url:
-            raise JudgeServiceError("service url or service discovery url not set")
+        self.service_url = os.environ["service_url"]
+        self.backend_url = os.environ["backend_url"]
 
     def _request(self, data):
         try:
-            r = requests.post(self.service_discovery_url, data=json.dumps(data),
-                              headers={"X-JUDGE-SERVER-TOKEN": token,
-                                       "Content-Type": "application/json"}, timeout=5).json()
+            r = requests.post(self.backend_url, json=data,
+                              headers={"X-JUDGE-SERVER-TOKEN": token}, timeout=5).json()
         except Exception as e:
             logger.exception(e)
             raise JudgeServiceError(e.message)