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core/log: do not attach multiple handlers to the same logger

logging.getLogger when given the same name twice, will return the same
object. Do not attach handler there every time, it will really open new
file, leading to multiplicated log entries and depleting file
descriptors.

QubesOS/qubes-issues#1697
Marek Marczykowski-Górecki 8 年之前
父节点
当前提交
539a46ca9a
共有 1 个文件被更改,包括 2 次插入0 次删除
  1. 2 0
      qubes/log.py

+ 2 - 0
qubes/log.py

@@ -125,6 +125,8 @@ def get_vm_logger(vmname):
     '''
 
     logger = logging.getLogger('vm.' + vmname)
+    if logger.handlers:
+        return logger
     handler = logging.FileHandler(
         os.path.join(LOGPATH, 'vm-{}.log'.format(vmname)))
     handler.setFormatter(formatter_log)