2\c@s>dZddlmZedddddgZdZd S( s Prometheus metrics exported by Jupyter Notebook Server Read https://prometheus.io/docs/practices/naming/ for naming conventions for metrics & labels. i(t Histogramthttp_request_duration_secondss)duration in seconds for all HTTP requeststmethodthandlert status_codecCsYtjd|jjddj|jjt|jd|j j |jj dS(s Tornado log handler for recording RED metrics. We record the following metrics: Rate - the number of requests, per second, your services are serving. Errors - the number of failed requests per second. Duration - The amount of time each request takes expressed as a time interval. We use a fully qualified name of the handler as a label, rather than every url path to reduce cardinality. This function should be either the value of or called from a function that is the 'log_function' tornado setting. This makes it get called at the end of every request, allowing us to record the metrics we need. RRs{}.{}RN( tHTTP_REQUEST_DURATION_SECONDStlabelstrequestRtformatt __class__t __module__ttypet__name__t get_statustobservet request_time(R((s/lib/python2.7/site-packages/notebook/metrics.pytprometheus_log_methods   !N(t__doc__tprometheus_clientRRR(((s/lib/python2.7/site-packages/notebook/metrics.pyts