w2v_server.py 文件源码

def server_exception_wrap(func):
    """
    Method decorator to return nicer JSON responses: handle internal server errors & report request timings.

    """
    @wraps(func)
    def _wrapper(self, *args, **kwargs):
        try:
            # append "success=1" and time taken in milliseconds to the response, on success
            logger.debug("calling server method '%s'" % (func.func_name))
            cherrypy.response.timeout = 3600 * 24 * 7  # [s]

            # include json data in kwargs; HACK: should be a separate decorator really, but whatever
            if getattr(cherrypy.request, 'json', None):
                kwargs.update(cherrypy.request.json)

            start = time.time()
            result = func(self, *args, **kwargs)
            if result is None:
                result = {}
            result['success'] = 1
            result['taken'] = time.time() - start
            logger.info("method '%s' succeeded in %ss" % (func.func_name, result['taken']))
            return result
        except Exception, e:
            logger.exception("exception serving request")
            result = {
                'error': repr(e),
                'success': 0,
            }
            cherrypy.response.status = 500
            return result
    return _wrapper