config: turn ConfigUnit into singleton

1 files changed, 7 insertions, 0 deletions

diff --git a/include/py/homekit/config/config.py b/include/py/homekit/config/config.py
index f2a3990..29364af 100644
--- a/include/py/homekit/config/config.py
+++ b/include/py/homekit/config/config.py
@@ -76,6 +76,13 @@ class BaseConfigUnit(ABC):
 class ConfigUnit(BaseConfigUnit):
     NAME = 'dumb'
 
+    _instance = None
+
+    def __new__(cls, *args, **kwargs):
+        if cls._instance is None:
+            cls._instance = super(ConfigUnit, cls).__new__(cls, *args, **kwargs)
+        return cls._instance
+
     def __init__(self, name=None, load=True):
         super().__init__()