rewritten anelpwr plugin

kvmd/plugins/ugpio/anelpwr.py

@@ -19,102 +19,152 @@
 #                                                                            #
 # ========================================================================== #
 
-import requests
+
-import aiohttp
+import asyncio
 import functools
 
 from typing import Callable
 from typing import Any
 
+import aiohttp
+
 from ...logging import get_logger
 
 from ... import tools
 from ... import aiotools
+from ... import htclient
 
 from ...yamlconf import Option
 
-from ...validators.hw import valid_number
 from ...validators.basic import valid_stripped_string_not_empty
+from ...validators.basic import valid_bool
+from ...validators.basic import valid_number
+from ...validators.basic import valid_float_f01
 
-from . import UserGpioModes
 from . import BaseUserGpioDriver
 from . import GpioDriverOfflineError
 
 
 # =====
 class Plugin(BaseUserGpioDriver):  # pylint: disable=too-many-instance-attributes
-    def __init__(  # pylint: disable=super-init-not-called
+    def __init__(
         self,
         instance_name: str,
         notifier: aiotools.AioNotifier,
-        host: str,
+
-        port: str,
+        url: str,
+        verify: bool,
         user: str,
-        password: str,
+        passwd: str,
-        
+        state_poll: float,
+        timeout: float,
     ) -> None:
 
         super().__init__(instance_name, notifier)
 
-        self.__host = host
+        self.__url = url
-        self.__port = port
+        self.__verify = verify
         self.__user = user
-        self.__password = password
+        self.__passwd = passwd
+        self.__state_poll = state_poll
+        self.__timeout = timeout
+
+        self.__initial: dict[str, (bool | None)] = {}
+
+        self.__state: dict[str, (bool | None)] = {}
+        self.__update_notifier = aiotools.AioNotifier()
+
+        self.__http_session: (aiohttp.ClientSession | None) = None
 
     @classmethod
     def get_plugin_options(cls) -> dict[str, Option]:
         return {
-            "host":  Option([], type=valid_stripped_string_not_empty),
+            "url":        Option("",   type=valid_stripped_string_not_empty),
-            "port":   Option([], type=valid_number),
+            "verify":     Option(True, type=valid_bool),
-            "user":   Option([], type=valid_stripped_string_not_empty),
+            "user":       Option(""),
-            "password":   Option([], type=valid_stripped_string_not_empty),
+            "passwd":     Option(""),
+            "state_poll": Option(5.0,  type=valid_float_f01),
+            "timeout":    Option(5.0,  type=valid_float_f01),
         }
 
-    @classmethod
-    def get_modes(cls) -> set[str]:
-        return set(UserGpioModes.ALL)
-
     @classmethod
     def get_pin_validator(cls) -> Callable[[Any], Any]:
-        return  functools.partial(valid_number, min=1,max=8)
+        return functools.partial(valid_number, min=0, max=7, name="ANELPWR channel")
+
+    def register_input(self, pin: str, debounce: float) -> None:
+        _ = debounce
+        self.__state[pin] = None
+
+    def register_output(self, pin: str, initial: (bool | None)) -> None:
+        self.__initial[pin] = initial
+        self.__state[pin] = None
+
+    def prepare(self) -> None:
+        async def inner_prepare() -> None:
+            await asyncio.gather(*[
+                self.write(pin, state)
+                for (pin, state) in self.__initial.items()
+                if state is not None
+            ], return_exceptions=True)
+        aiotools.run_sync(inner_prepare())
+
+    async def run(self) -> None:
+        prev_state: (dict | None) = None
+        while True:
+            session = self.__ensure_http_session()
+            try:
+                async with session.get(f"{self.__url}/strg.cfg") as response:
+                    htclient.raise_not_200(response)
+                    parts = (await response.text()).split(";")
+                    for pin in self.__state:
+                        self.__state[pin] = (parts[1 + int(pin) * 5] == "1")
+            except Exception as err:
+                get_logger().error("Failed ANELPWR bulk GET request: %s", tools.efmt(err))
+                self.__state = dict.fromkeys(self.__state, None)
+            if self.__state != prev_state:
+                self._notifier.notify()
+                prev_state = self.__state
+            await self.__update_notifier.wait(self.__state_poll)
+
+    async def cleanup(self) -> None:
+        if self.__http_session:
+            await self.__http_session.close()
+            self.__http_session = None
 
     async def read(self, pin: str) -> bool:
-        try:
+        if self.__state[pin] is None:
-            #status = 0
-            #body = ""
-            async with aiohttp.ClientSession() as session:
-                url  = f"http://{self.__host}:{self.__port}/strg.cfg"
-                async with session.get(url,auth=aiohttp.BasicAuth(self.__user,self.__password)) as resp:
-                    body = await resp.text()
-                    if ( resp.status != 200 ):
-                        get_logger(0).error(f"http get returned {resp.status} form {self.__host}")
-                        raise GpioDriverOfflineError(self)
-
-                    return '1' == body.split(';')[1 + (int(pin) - 1) * 5] 
-
-        except Exception as e:
-            get_logger(0).error(e)            
             raise GpioDriverOfflineError(self)
+        return self.__state[pin]  # type: ignore
 
     async def write(self, pin: str, state: bool) -> None:
-        _ = pin
+        session = self.__ensure_http_session()
-        if state:
-            onoff = f"F{int(pin)-1}=1"
-        else: 
-            onoff = f"F{int(pin)-1}=0"
         try:
-            async with aiohttp.ClientSession() as session:
+            async with session.post(
-                url = f'http://{self.__host}:{self.__port}/ctrl.htm'
+                url=f"{self.__url}//ctrl.htm",
-                headers={'Content-Type':'text/plain'}
+                data=f"F{pin}={int(state)}",
-                auth=aiohttp.BasicAuth(self.__user,self.__password)
+                headers={"Content-Type": "text/plain"},
-                async with session.post(url,auth=auth,headers=headers,data=onoff) as resp:
+            ) as response:
-                    await resp.text()
+                htclient.raise_not_200(response)
-                    if 200 != resp.status:
+        except Exception as err:
-                        raise GpioDriverOfflineError(self)                        
+            get_logger().error("Failed ANELPWR POST request to pin %s: %s", pin, tools.efmt(err))
-        
-        except Exception as e: 
-            get_logger(0).error(e)
             raise GpioDriverOfflineError(self)
+        else:
+            self.__update_notifier.notify()
+
+    def __ensure_http_session(self) -> aiohttp.ClientSession:
+        if not self.__http_session:
+            kwargs: dict = {
+                "headers": {
+                    "User-Agent": htclient.make_user_agent("KVMD"),
+                },
+                "timeout": aiohttp.ClientTimeout(total=self.__timeout),
+            }
+            if self.__user:
+                kwargs["auth"] = aiohttp.BasicAuth(self.__user, self.__passwd)
+            if not self.__verify:
+                kwargs["connector"] = aiohttp.TCPConnector(ssl=False)
+            self.__http_session = aiohttp.ClientSession(**kwargs)
+        return self.__http_session
 
     def __str__(self) -> str:
         return f"ANELPWR({self._instance_name})"