Struct Metrics 

pub struct Metrics { /* private fields */ }

Holds the Prometheus render handle and the process start instant.

Implementations

impl Metrics

pub fn install() -> Self

Install the global Prometheus recorder and describe every metric. Call exactly once per process, before any metric is recorded.

Panics

Panics if a global recorder is already installed.

pub fn for_test() -> Self

Build a non-installing handle for tests.

The metrics! macros always target the globally installed recorder, which this constructor never sets. The returned handle therefore renders an empty snapshot regardless of any metric recorded elsewhere. Use Self::install plus super::ControlState::with_metrics to serve live metrics.

pub fn render(&self, status_counts: &[(&str, u64)]) -> String

Render the current metrics, refreshing the scrape-time gauges (lightshuttle_resources per status and lightshuttle_uptime_seconds) just before serialising.