allow to send metrics to memory or redis

server/bootstrap.py

@@ -17,16 +17,34 @@ def env_bool(name:str, default:bool=False) -> bool:
 
 def build_server_from_env(default_snake_type:str) -> Server:
   data_path = str(Path(__file__).resolve().parent.parent)
+  game_state_backend = os.environ.get('GAME_STATE_BACKEND', 'memory')
+  game_state_redis_url = os.environ.get('GAME_STATE_REDIS_URL', 'redis://localhost:6379/0')
+  game_state_ttl_sec = int(os.environ.get('GAME_STATE_TTL_SEC', '900'))
+
+  metrics_backend = os.environ.get('METRICS_BACKEND', None)
+  if metrics_backend is None:
+    metrics_backend = ('redis' if game_state_backend.strip().lower() == 'redis' else 'memory')
+
+  metrics_redis_url = os.environ.get('METRICS_REDIS_URL', game_state_redis_url)
+  metrics_ttl_sec_raw = os.environ.get('METRICS_TTL_SEC', None)
+  if metrics_ttl_sec_raw is None:
+    metrics_ttl_sec = (game_state_ttl_sec if metrics_backend.strip().lower() == 'redis' else None)
+  else:
+    metrics_ttl_sec = int(metrics_ttl_sec_raw)
+
   server = Server(
     data_path=data_path,
     snake_type=os.environ.get('SNAKE', default_snake_type),
     storage_type=os.environ.get('STORAGE', 'LocalStorage'),
     debug=env_bool('DEBUG_SERVER'),
     check_tls_security=False,
-    game_state_backend=os.environ.get('GAME_STATE_BACKEND', 'memory'),
-    game_state_redis_url=os.environ.get('GAME_STATE_REDIS_URL', 'redis://localhost:6379/0'),
-    game_state_ttl_sec=int(os.environ.get('GAME_STATE_TTL_SEC', '900')),
+    game_state_backend=game_state_backend,
+    game_state_redis_url=game_state_redis_url,
+    game_state_ttl_sec=game_state_ttl_sec,
     game_state_local_cache=env_bool('GAME_STATE_LOCAL_CACHE', default=True),
+    metrics_backend=metrics_backend,
+    metrics_redis_url=metrics_redis_url,
+    metrics_ttl_sec=metrics_ttl_sec,
   )
 
   if env_bool('STORE_GAME_HISTORY'):