pub struct Metrics {
pub requests_total: AtomicU64,
pub requests_ok: AtomicU64,
pub requests_err: AtomicU64,
pub requests_by_method: MethodCounters,
/* private fields */
}Expand description
Lightweight, lock-free request metrics.
All counters use relaxed atomic ordering — sufficient for monitoring where exact cross-thread consistency is not required.
Fields§
§requests_total: AtomicU64§requests_ok: AtomicU64§requests_err: AtomicU64§requests_by_method: MethodCountersImplementations§
Source§impl Metrics
impl Metrics
Sourcepub fn record_request(&self, method: &str, status: u16)
pub fn record_request(&self, method: &str, status: u16)
Record a completed request. A status code in the 200-399 range is counted as successful; everything else counts as an error.
Also emits an access log line via tracing if a thread-local
request context was set (see set_current_request). The
thread-local trick keeps the existing 30+ call sites of this
method untouched while still giving us Next.js-style
GET /foo 200 in 27ms output for free. Server recv() is
single-threaded per request, so the thread-local matches the
in-flight request without cross-talk.
Sourcepub fn uptime_secs(&self) -> u64
pub fn uptime_secs(&self) -> u64
Seconds elapsed since this Metrics instance was created.
Sourcepub fn prometheus(&self) -> String
pub fn prometheus(&self) -> String
Return metrics in Prometheus text exposition format.
Supports scraping by Prometheus, Grafana Agent, OTel collector, etc.
Trait Implementations§
Auto Trait Implementations§
impl !Freeze for Metrics
impl RefUnwindSafe for Metrics
impl Send for Metrics
impl Sync for Metrics
impl Unpin for Metrics
impl UnsafeUnpin for Metrics
impl UnwindSafe for Metrics
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