BrowserMetrics

stygian_browser::metrics

Struct BrowserMetrics 

Source 
pub struct BrowserMetrics {
    pub pool_size: Gauge,
    pub acquisition_duration_seconds: Histogram,
    pub crashes_total: Counter,
    pub process_rss_bytes: Gauge,
    /* private fields */
}
Expand description

Global Prometheus metrics for the browser pool.

Obtain a reference via the METRICS static.

Fields§

§pool_size: Gauge

Active browser instance count.

§acquisition_duration_seconds: Histogram

Histogram of browser acquisition durations in seconds.

§crashes_total: Counter

Total browser crashes (unexpected terminations or health-check failures).

§process_rss_bytes: Gauge

Process RSS in bytes (Linux only; 0 on other platforms).

Implementations§

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impl BrowserMetrics

Source

pub fn record_acquisition(&self, duration: Duration)

Record a browser acquisition that took duration.

Emits a warning if duration exceeds the 1-second performance budget. Logs an error if the crash rate exceeds 10%.

Source

pub fn set_pool_size(&self, active: i64)

Update the pool size gauge.

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pub fn record_crash(&self)

Record a browser crash or health-check failure.

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pub fn refresh_rss(&self) -> i64

Refresh the process RSS gauge and return the current value in bytes.

Returns 0 on platforms where /proc/self/status is unavailable.

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pub fn gather(&self) -> String

Encode all metrics as Prometheus text exposition format.

§Errors

Returns an empty string if encoding fails (registry mutex poisoned).

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