Module measure 

What a service measures, for Prometheus: its requests by route and status and how long they take, what the limits refuse, and its database connections; services add their own (the combat service’s WebSockets, say). Served at /metrics on METRICS_ADDR, an address of its own that the proxy never serves; without it nothing is measured.

Functions

as_f64

count as a gauge’s value, at most u32::MAX: far beyond any count here.

endpoint

GET /metrics: what was measured, in Prometheus’ text format.

install

Measures service from now on, everything labelled with its name; the handle renders what was measured. Once per process.

refused

Counts a request a limit refused: limit is which.

requests

Counts and times router’s requests, by the route they matched (its template, such as /characters/{id}, not the ids themselves).

watch_pool

Measures pool’s connections whenever the measurements are read. The first pool a service watches is the one measured.