[Netfilter] fix redis logs

data/Dockerfiles/netfilter/main.py

@@ -395,7 +395,7 @@ if __name__ == '__main__':
   signal.signal(signal.SIGTERM, sigterm_quit)
 
   # init Logger
-  logger = Logger(None)
+  logger = Logger()
 
   # init backend
   backend = sys.argv[1]
@@ -437,7 +437,7 @@ if __name__ == '__main__':
       time.sleep(3)
     else:
       break
-  Logger.r = r
+  logger.set_redis(r)
 
   # rename fail2ban to netfilter
   if r.exists('F2B_LOG'):

data/Dockerfiles/netfilter/modules/Logger.py

@@ -2,7 +2,10 @@ import time
 import json
 
 class Logger:
-  def __init__(self, redis):
+  def __init__(self):
+    self.r = None
+
+  def set_redis(self, redis):
     self.r = redis
 
   def log(self, priority, message):
@@ -10,7 +13,7 @@ class Logger:
     tolog['time'] = int(round(time.time()))
     tolog['priority'] = priority
     tolog['message'] = message
-    if self.r:
+    if self.r is not None:
       self.r.lpush('NETFILTER_LOG', json.dumps(tolog, ensure_ascii=False))
     print(message)