Function metrics

kms/src/main.rs:81–83

(state: &State<KmsState>)

#[rocket::get("/metrics")]
fn metrics(state: &State<KmsState>) -> RawText<String> {
    RawText(state.metrics().render_prometheus())
}

// Count only RPCs whose primary job is to verify caller/app attestation.
// Recording in a response fairing also catches failures that happen before