Flask method view logging handler decorator

gistfile1.py

import traceback
import datetime
import socket
import os
import resource
...

def log_exception(view_func):
    """ log exception decorator for a view,
    """
    def _decorator(self, *args, **kwargs):
        try:
            response = view_func(self, *args, **kwargs)
        except:
            tb = traceback.format_exc()
            # get the view name from request
            log_dict = { 'class_method':"%s.%s.%s()" % (self.__class__.__module__, self.__class__.__name__,view_func.func_name),
                         'method':request.method,
                         'url':request.url,
                         'remote':request.remote_addr,
                         'tb':tb,
                         'date':datetime.datetime.utcnow(),
                         'tb_short':tb.splitlines()[-1],
                         'hostname':socket.gethostname(),
                         'pid':int(os.getpid()),
                         'rss':int(resource.getrusage(resource.RUSAGE_SELF)[2])
                         }
            if getattr(g, 'current_user', None):
                log_dict['user'] = g.current_user

            if len(request.form) > 0:
                form = ""
                for key in request.form.keys():
                    form += '%s=\"%s\"\n' % (key,request.form[key])
                log_dict['form'] = form

            try:
                res = mongo.db.log.save(log_dict)
            except PyMongoError:
                print log_dict

            raise
        return response
    return wraps(view_func)(_decorator)