HandleMetricsRequest

Air

Function HandleMetricsRequest 

Source 
pub(crate) fn HandleMetricsRequest() -> String
Expand description

Handler for /metrics endpoint - returns Prometheus format metrics

Exports all collected metrics in Prometheus text format for scraping by monitoring systems like Prometheus, Grafana, or custom dashboards.

Metrics include:

  • Request counters (total, successful, failed)
  • Response times (histogram)
  • Resource usage (memory, CPU)
  • Connection counts
  • Background task status

ยงTODO

  • Add timeout for metrics export (should not block daemon)
  • Implement metric label support (service, host, etc.)
  • Add counter reset capability
  • Implement metric filtering via query parameters
  • Add histogram quantiles (p50, p95, p99)
  • Support both Prometheus and OpenMetrics formats