Method to_prometheus

nodedb/src/control/security/observability.rs:176–256

Export all metrics as Prometheus text format.

(&self)

    /// Export all metrics as Prometheus text format.
    pub fn to_prometheus(&self) -> String {
        let mut out = String::with_capacity(2048);

        // Counters.
        append_counter(
            &mut out,
            "nodedb_auth_success_total",
            "method",
            &[
                (
                    "password",
                    self.auth_success_password.load(Ordering::Relaxed),
                ),
                ("api_key", self.auth_success_api_key.load(Ordering::Relaxed)),
                ("jwt", self.auth_success_jwt.load(Ordering::Relaxed)),
                (
                    "certificate",
                    self.auth_success_certificate.load(Ordering::Relaxed),
                ),
                ("trust", self.auth_success_trust.load(Ordering::Relaxed)),
            ],
        );
        append_counter(
            &mut out,
            "nodedb_auth_failure_total",
            "reason",
            &[
                (
                    "password",
                    self.auth_failure_password.load(Ordering::Relaxed),
                ),
                ("api_key", self.auth_failure_api_key.load(Ordering::Relaxed)),
                ("jwt", self.auth_failure_jwt.load(Ordering::Relaxed)),
                ("expired", self.auth_failure_expired.load(Ordering::Relaxed)),
                (
                    "blacklisted",
                    self.auth_failure_blacklisted.load(Ordering::Relaxed),
                ),
            ],
        );

        out.push_str(&format!(
            "nodedb_rls_denied_total {}\n",
            self.rls_denied_total.load(Ordering::Relaxed)
        ));
        out.push_str(&format!(
            "nodedb_blacklist_rejected_total {}\n",
            self.blacklist_rejected_total.load(Ordering::Relaxed)
        ));
        out.push_str(&format!(
            "nodedb_rate_limit_rejected_total {}\n",
            self.rate_limit_rejected_total.load(Ordering::Relaxed)
        ));
        out.push_str(&format!(
            "nodedb_jwks_cache_hit_total {}\n",
            self.jwks_cache_hit_total.load(Ordering::Relaxed)
        ));
        out.push_str(&format!(