new events model

kvmd/plugins/atx/__init__.py

@@ -48,6 +48,9 @@ class BaseAtx(BasePlugin):
     async def get_state(self) -> dict:
         raise NotImplementedError
 
+    async def trigger_state(self) -> None:
+        raise NotImplementedError
+
     async def poll_state(self) -> AsyncGenerator[dict, None]:
         yield {}
         raise NotImplementedError

kvmd/plugins/atx/disabled.py

@@ -36,6 +36,9 @@ class AtxDisabledError(AtxOperationError):
 
 # =====
 class Plugin(BaseAtx):
+    def __init__(self) -> None:
+        self.__notifier = aiotools.AioNotifier()
+
     async def get_state(self) -> dict:
         return {
             "enabled": False,
@@ -46,10 +49,13 @@ class Plugin(BaseAtx):
             },
         }
 
+    async def trigger_state(self) -> None:
+        self.__notifier.notify()
+
     async def poll_state(self) -> AsyncGenerator[dict, None]:
         while True:
+            await self.__notifier.wait()
             yield (await self.get_state())
-            await aiotools.wait_infinite()
 
     # =====
 

kvmd/plugins/atx/gpio.py

@@ -21,6 +21,7 @@
 
 
 import asyncio
+import copy
 
 from typing import AsyncGenerator
 
@@ -130,14 +131,18 @@ class Plugin(BaseAtx):  # pylint: disable=too-many-instance-attributes
             },
         }
 
+    async def trigger_state(self) -> None:
+        self.__notifier.notify(1)
+
     async def poll_state(self) -> AsyncGenerator[dict, None]:
-        prev_state: dict = {}
+        prev: dict = {}
         while True:
-            state = await self.get_state()
-            if state != prev_state:
-                yield state
-                prev_state = state
-            await self.__notifier.wait()
+            if (await self.__notifier.wait()) > 0:
+                prev = {}
+            new = await self.get_state()
+            if new != prev:
+                prev = copy.deepcopy(new)
+                yield new
 
     async def systask(self) -> None:
         await self.__reader.poll()