ChiRouter initializing and setting up the router.

DataBasePing endpoint handler "/ping", checks for a connection to the database.

MetricsHandlerGet endpoint handler "/value/{mtype}/{mname}".

MetricsHandlerGetAll endpoint handler "/", get all metrics in browser.

MetricsHandlerGetJSON endpoint handler "/value/".

MetricsHandlerPost endpoint handler "/update/{mtype}/{mname}/{mvalue}" metric update.

MetricsHandlerPostBatch endpoint handler "/updates/", metrics update.

MetricsHandlerPostJSON endpoint handler "/update/", metric update.

verifyDataMiddleware check hash from request.