Struct NetMetrics 

pub struct NetMetrics {
    pub active_requests: AtomicU64,
    pub bytes_sent_total: AtomicU64,
    pub bytes_received_total: AtomicU64,
    pub rtt_histogram: [AtomicU64; 8],
    /* private fields */
}

Network metrics registry.

Tracks per-method counters and global totals. All atomic fields are updated with Ordering::Relaxed which is sufficient for monotonically increasing counters observed by a single scraper.

Fields

active_requests: AtomicU64

Currently-in-flight request gauge.

bytes_sent_total: AtomicU64

Total bytes sent (response bodies).

bytes_received_total: AtomicU64

Total bytes received (request bodies).

rtt_histogram: [AtomicU64; 8]

RTT histogram — 8 buckets: 7 finite bounds + +Inf.

Implementations

impl NetMetrics

pub fn new() -> Arc<Self>

Create a new empty registry wrapped in an Arc.

pub fn enter_request(&self) -> ActiveRequestGuard<'_>

Increment the active-requests gauge and return a guard that decrements it.

The guard must be kept alive until the request completes.

pub fn add_bytes_received(&self, bytes: u64)

Record bytes received (request body size).

pub fn add_bytes_sent(&self, bytes: u64)

Record bytes sent (response body size).

pub fn record_rtt(&self, rtt_ms: u64)

Record a single RTT observation (milliseconds) in the histogram.

pub fn record_request(&self, method: &str, duration_ms: u64, is_error: bool)

Record a request for method with the given duration_ms.

Creates a per-method entry the first time a method name is seen.

pub fn to_prometheus(&self) -> String

Render all metrics in Prometheus text format.

The output format follows the OpenMetrics / Prometheus exposition format, consistent with amaters_core::metrics::CoreMetrics::to_prometheus.