commit dce7a38c693565b3e469f977acab653b8dc4d0ee
Author: Fabio Erculiani <lxnay@sabayon.org>
Date:   Sun Aug 29 09:49:05 2010 +0200

    [entropy.misc] LogFile: remove loggers cache, does more harm than good

diff --git a/libraries/entropy/misc.py b/libraries/entropy/misc.py
index 0534615..2aa544b 100644
--- a/libraries/entropy/misc.py
+++ b/libraries/entropy/misc.py
@@ -989,7 +989,6 @@ class LogFile:
     }
     LOG_FORMAT = "%(asctime)s %(levelname)s: %(message)s"
     DATE_FORMAT = "[%H:%M:%S %d/%m/%Y %Z]"
-    _HANDLER_CACHE = {}
 
     def __init__(self, level = None, filename = None, header = "[LOG]"):
         """
@@ -1014,30 +1013,17 @@ class LogFile:
         self.__level = LogFile.LEVELS.get(logger_level)
         self.__logger.setLevel(logging.DEBUG)
 
-        handler_cache_key = self.__handler_cache_key()
-        cached_handler = LogFile._HANDLER_CACHE.get(handler_cache_key)
-
-        if cached_handler is None:
-            if self.__filename is not None:
-                try:
-                    self.__handler = logging.FileHandler(self.__filename)
-                except (IOError, OSError):
-                    self.__handler = logging.StreamHandler()
-            else:
+        if self.__filename is not None:
+            try:
+                self.__handler = logging.FileHandler(self.__filename)
+            except (IOError, OSError):
                 self.__handler = logging.StreamHandler()
-            LogFile._HANDLER_CACHE[handler_cache_key] = self.__handler
-            self.__handler.setLevel(self.__level)
-            self.__handler.setFormatter(logging.Formatter(LogFile.LOG_FORMAT,
-                LogFile.DATE_FORMAT))
-            self.__logger.addHandler(self.__handler)
         else:
-            self.__handler = cached_handler
-
-    def __handler_cache_key(self):
-        return (self.__filename, self.__level)
-
-    def __del__(self):
-        self.close()
+            self.__handler = logging.StreamHandler()
+        self.__handler.setLevel(self.__level)
+        self.__handler.setFormatter(logging.Formatter(LogFile.LOG_FORMAT,
+            LogFile.DATE_FORMAT))
+        self.__logger.addHandler(self.__handler)
 
     def fileno(self):
         return self.__handler.stream.fileno()
@@ -1047,16 +1033,17 @@ class LogFile:
         if hasattr(self.__handler, 'flush'):
             self.__handler.flush()
 
+    def __del__(self):
+        self.close()
+
     def close(self):
         """ Close log file """
-        handler_cache_key = self.__handler_cache_key()
-        # drop from cache
-        handler = LogFile._HANDLER_CACHE.pop(handler_cache_key, None)
-        if handler is not None:
-            if hasattr(handler, 'close'):
-                handler.close()
-            handler = None
-        self.__logger = None
+        if self.__handler is not None:
+            if hasattr(self.__handler, 'close'):
+                self.__handler.close()
+            self.__logger.removeHandler(self.__handler)
+            self.__handler = None
+            self.__logger = None
 
     def _handler(self, mystr):
         """