feat: enhanced logging to file support, redirecting all stdout and stderr to log file.

This feature woulb be useful for troubleshooting daemonized bots since now all exceptions are also wrote to log file.

mumbleBot.py

@@ -700,6 +700,7 @@ if __name__ == '__main__':
     var.db = SettingsDatabase(var.dbfile)
 
     # Setup logger
+
     bot_logger = logging.getLogger("bot")
     formatter = logging.Formatter('[%(asctime)s %(levelname)s %(threadName)s] %(message)s', "%b %d %H:%M:%S")
     bot_logger.setLevel(logging.INFO)
@@ -714,7 +715,10 @@ if __name__ == '__main__':
     logfile = util.solve_filepath(var.config.get('bot', 'logfile'))
     handler = None
     if logfile:
+        print(f"Redirecting stdout and stderr to log file: {logfile}")
         handler = logging.handlers.RotatingFileHandler(logfile, mode='a', maxBytes=10240)  # Rotate after 10KB
+        sys.stdout = util.LoggerIOWrapper(bot_logger, logging.INFO, fallback_io_buffer=sys.stdout.buffer)
+        sys.stderr = util.LoggerIOWrapper(bot_logger, logging.ERROR, fallback_io_buffer=sys.stderr.buffer)
     else:
         handler = logging.StreamHandler()
 
@@ -755,3 +759,4 @@ if __name__ == '__main__':
 
     # Start the main loop.
     var.bot.loop()
+

util.py

@@ -4,6 +4,7 @@
 import hashlib
 import magic
 import os
+import io
 import sys
 import variables as var
 import zipfile
@@ -335,3 +336,16 @@ def youtube_search(query):
         error_traceback = traceback.format_exc().split("During")[0]
         log.error("util: youtube query failed with error:\n %s" % error_traceback)
         return False
+
+class LoggerIOWrapper(io.TextIOWrapper):
+    def __init__(self, logger: logging.Logger, logging_level, fallback_io_buffer):
+        super().__init__(fallback_io_buffer, write_through=True)
+        self.logger = logger
+        self.logging_level = logging_level
+
+    def write(self, text):
+        if isinstance(text, bytes):
+            self.logger.log(self.logging_level, text.decode('utf-8').rstrip())
+        else:
+            self.logger.log(self.logging_level, text.rstrip())
+