Struct PrometheusExporter 

pub struct PrometheusExporter { /* private fields */ }

Available on crate feature metrics only.

Holds Prometheus counters mirroring the executor’s metrics.

Implementations

impl PrometheusExporter

pub fn new() -> Result<Self>

Build an exporter with a fresh registry.

pub fn registry(&self) -> &Registry

The underlying registry, e.g. to register additional collectors.

pub fn update(&self, snap: &MetricsSnapshot)

Overwrite counter values from a snapshot.

Prometheus counters are monotonic, so we only ever move them forward by the delta between their current value and the snapshot.

pub fn render(&self) -> Result<String>

Render the current registry in Prometheus text exposition format.