common event parsing

kvmd/apps/vnc/server.py

@@ -164,16 +164,16 @@ class _Client(RfbClient):  # pylint: disable=too-many-instance-attributes
             async with self.__kvmd_session.ws() as self.__kvmd_ws:
                 logger.info("[kvmd] %s: Connected to KVMD websocket", self._remote)
                 self.__stage3_ws_connected.set_passed()
-                async for event in self.__kvmd_ws.communicate():
+                async for (event_type, event) in self.__kvmd_ws.communicate():
-                    await self.__process_ws_event(event)
+                    await self.__process_ws_event(event_type, event)
                 raise RfbError("KVMD closed the websocket (the server may have been stopped)")
         finally:
             self.__kvmd_ws = None
 
-    async def __process_ws_event(self, event: Dict) -> None:
+    async def __process_ws_event(self, event_type: str, event: Dict) -> None:
-        if event["event_type"] == "info_meta_state":
+        if event_type == "info_meta_state":
             try:
-                host = event["event"]["server"]["host"]
+                host = event["server"]["host"]
             except Exception:
                 host = None
             else:
@@ -184,10 +184,10 @@ class _Client(RfbClient):  # pylint: disable=too-many-instance-attributes
                             await self._send_rename(name)
                     self.__shared_params.name = name
 
-        elif event["event_type"] == "hid_state":
+        elif event_type == "hid_state":
             async with self.__lock:
                 if self._encodings.has_leds_state:
-                    await self._send_leds_state(**event["event"]["keyboard"]["leds"])
+                    await self._send_leds_state(**event["keyboard"]["leds"])
 
     # =====
 

kvmd/clients/kvmd.py

@@ -22,7 +22,6 @@
 
 import asyncio
 import contextlib
-import json
 import types
 
 from typing import Tuple
@@ -37,6 +36,7 @@ import aiohttp
 
 from .. import aiotools
 from .. import htclient
+from .. import htserver
 
 
 # =====
@@ -132,10 +132,10 @@ class KvmdClientWs:
     def __init__(self, ws: aiohttp.ClientWebSocketResponse) -> None:
         self.__ws = ws
 
-        self.__writer_queue: "asyncio.Queue[Dict]" = asyncio.Queue()
+        self.__writer_queue: "asyncio.Queue[Tuple[str, Dict]]" = asyncio.Queue()
         self.__communicated = False
 
-    async def communicate(self) -> AsyncGenerator[Dict, None]:
+    async def communicate(self) -> AsyncGenerator[Tuple[str, Dict], None]:
         assert not self.__communicated
         self.__communicated = True
         receive_task: Optional[asyncio.Task] = None
@@ -152,7 +152,7 @@ class KvmdClientWs:
                 if receive_task in done:
                     msg = receive_task.result()
                     if msg.type == aiohttp.WSMsgType.TEXT:
-                        yield json.loads(msg.data)
+                        yield htserver.parse_ws_event(msg.data)
                     elif msg.type == aiohttp.WSMsgType.CLOSE:
                         await self.__ws.close()
                     elif msg.type == aiohttp.WSMsgType.CLOSED:
@@ -162,7 +162,7 @@ class KvmdClientWs:
                     receive_task = None
 
                 if writer_task in done:
-                    await self.__ws.send_str(json.dumps(writer_task.result()))
+                    await htserver.send_ws_event(self.__ws, *writer_task.result())
                     writer_task = None
         finally:
             if receive_task:
@@ -176,28 +176,16 @@ class KvmdClientWs:
             self.__communicated = False
 
     async def send_key_event(self, key: str, state: bool) -> None:
-        await self.__writer_queue.put({
+        await self.__writer_queue.put(("key", {"key": key, "state": state}))
-            "event_type": "key",
-            "event": {"key": key, "state": state},
-        })
 
     async def send_mouse_button_event(self, button: str, state: bool) -> None:
-        await self.__writer_queue.put({
+        await self.__writer_queue.put(("mouse_button", {"button": button, "state": state}))
-            "event_type": "mouse_button",
-            "event": {"button": button, "state": state},
-        })
 
     async def send_mouse_move_event(self, to_x: int, to_y: int) -> None:
-        await self.__writer_queue.put({
+        await self.__writer_queue.put(("mouse_move", {"to": {"x": to_x, "y": to_y}}))
-            "event_type": "mouse_move",
-            "event": {"to": {"x": to_x, "y": to_y}},
-        })
 
     async def send_mouse_wheel_event(self, delta_x: int, delta_y: int) -> None:
-        await self.__writer_queue.put({
+        await self.__writer_queue.put(("mouse_wheel", {"delta": {"x": delta_x, "y": delta_y}}))
-            "event_type": "mouse_wheel",
-            "event": {"delta": {"x": delta_x, "y": delta_y}},
-        })
 
 
 class KvmdClientSession:

kvmd/htserver.py

@@ -208,6 +208,13 @@ async def stream_json_exception(response: StreamResponse, err: Exception) -> Non
     }, False)
 
 
+async def send_ws_event(wsr: WebSocketResponse, event_type: str, event: Optional[Dict]) -> None:
+    await wsr.send_str(json.dumps({
+        "event_type": event_type,
+        "event": event,
+    }))
+
+
 def parse_ws_event(msg: str) -> Tuple[str, Dict]:
     data = json.loads(msg)
     if not isinstance(data, dict):
@@ -246,10 +253,7 @@ class WsSession:
         return f"WsSession(id={id(self)}, {self.kwargs})"
 
     async def send_event(self, event_type: str, event: Optional[Dict]) -> None:
-        await self.wsr.send_str(json.dumps({
+        await send_ws_event(self.wsr, event_type, event)
-            "event_type": event_type,
-            "event": event,
-        }))
 
 
 class HttpServer: