Question

An application I’m working on uses the logging module to log errors etc. In such a case it would be nice to be able to include the HTTP referer, GET/POST arguments etc. in the log entry.

While it would be possible to append it to the message before calling .error() etc, I’m looking for a way to do it at a central location (without wrapping those functions of course).

Answer 1

I now solved it using a custom formatter:

class IndicoMailFormatter(logging.Formatter):
    def format(self, record):
        s = super(IndicoMailFormatter, self).format(record)
        return s + self._getRequestInfo()

    def _getRequestInfo(self):
        info = ['Additional information:']
        # ...
        return '\n\n%s' % '\n'.join(info)

This formatter can be easily set using the class option in logging.conf (or via python code).