Get the Prometheus exporter instance.
Returns null when telemetry is disabled, not yet initialized, or 'prometheus' is not in OTEL_METRICS_EXPORTER. Used by the /metrics Express route to serve Prometheus metrics.
/metrics
PrometheusExporter instance or null
Get the Prometheus exporter instance.
Returns null when telemetry is disabled, not yet initialized, or 'prometheus' is not in OTEL_METRICS_EXPORTER. Used by the
/metricsExpress route to serve Prometheus metrics.