option to disable log reader

kvmd/apps/kvmd/api/log.py

@@ -23,6 +23,8 @@
 from aiohttp.web import Request
 from aiohttp.web import StreamResponse
 
+from ....errors import OperationError
+
 from ....htserver import exposed_http
 from ....htserver import start_streaming
 
@@ -33,14 +35,21 @@ from ..logreader import LogReader
 
 
 # =====
+class LogReaderDisabledError(OperationError):
+    def __init__(self) -> None:
+        super().__init__("LogReader is disabled")
+
+
 class LogApi:
-    def __init__(self, log_reader: LogReader) -> None:
+    def __init__(self, log_reader: (LogReader | None)) -> None:
         self.__log_reader = log_reader
 
     # =====
 
     @exposed_http("GET", "/log")
     async def __log_handler(self, request: Request) -> StreamResponse:
+        if self.__log_reader is None:
+            raise LogReaderDisabledError()
         seek = valid_log_seek(request.query.get("seek", 0))
         follow = valid_bool(request.query.get("follow", False))
         response = await start_streaming(request, "text/plain")