Module prometheus 

Prometheus backend for shared Aster infrastructure metrics.

This module is enabled by the prometheus feature. Product crates can use init_or_noop to obtain a SharedMetricsRecorder and export_metrics for their HTTP metrics endpoint without depending on the prometheus crate directly. Product-specific metric families can be registered with Forge descriptors and recorded through opaque handles, so products keep ownership of domain labels without importing Prometheus types.

Structs

ProductCounter

Typed handle for a registered product counter.

ProductGauge

Typed handle for a registered product gauge.

ProductHistogram

Typed handle for a registered product histogram.

ProductMetricHandle

Opaque handle returned after registering a product metric.

PrometheusMetrics

Prometheus metric families for product-neutral Aster infrastructure.

PrometheusMetricsRecorder

Prometheus recorder for shared infrastructure metrics.

Enums

ProductMetricError

Errors returned by product metric registration or recording.

Functions

add_product_gauge

Adds to a registered product gauge.

export_metrics

Exports the current Prometheus text exposition body.

inc_product_counter

Increments a registered product counter.

init_metrics

Initializes the shared Prometheus registry.

init_or_noop

Initializes Prometheus metrics and falls back to a no-op recorder on failure.

is_initialized

Returns whether the Prometheus registry has been initialized.

observe_product_histogram

Observes a registered product histogram.

record_health_component

Records one health component into the shared Prometheus registry.

record_health_report

Records an aggregate health report into the shared Prometheus registry.

register_product_counter

Registers a product counter and returns a typed handle.

register_product_gauge

Registers a product gauge and returns a typed handle.

register_product_histogram

Registers a product histogram and returns a typed handle.

register_product_metric

Registers a product-owned metric family in the shared Prometheus registry.

register_product_metrics

Registers multiple product-owned metric families in order.

set_product_gauge

Sets a registered product gauge.

Type Aliases

ProductMetricResult

Result type for product metric operations.