| 123456789101112131415161718192021222324252627282930313233343536373839404142434445 |
- # -*- coding: utf-8 -*-
- """
- flask.logging
- ~~~~~~~~~~~~~
- Implements the logging support for Flask.
- :copyright: (c) 2011 by Armin Ronacher.
- :license: BSD, see LICENSE for more details.
- """
- from __future__ import absolute_import
- from logging import getLogger, StreamHandler, Formatter, getLoggerClass, DEBUG
- def create_logger(app):
- """Creates a logger for the given application. This logger works
- similar to a regular Python logger but changes the effective logging
- level based on the application's debug flag. Furthermore this
- function also removes all attached handlers in case there was a
- logger with the log name before.
- """
- Logger = getLoggerClass()
- class DebugLogger(Logger):
- def getEffectiveLevel(x):
- if x.level == 0 and app.debug:
- return DEBUG
- return Logger.getEffectiveLevel(x)
- class DebugHandler(StreamHandler):
- def emit(x, record):
- StreamHandler.emit(x, record) if app.debug else None
- handler = DebugHandler()
- handler.setLevel(DEBUG)
- handler.setFormatter(Formatter(app.debug_log_format))
- logger = getLogger(app.logger_name)
- # just in case that was not a new logger, get rid of all the handlers
- # already attached to it.
- del logger.handlers[:]
- logger.__class__ = DebugLogger
- logger.addHandler(handler)
- return logger
|
