Struct MetricsCounters 

pub struct MetricsCounters {
    pub accepted_connections: AtomicU64,
    pub dispatched_requests: AtomicU64,
    pub dispatch_errors_by_code: Mutex<BTreeMap<u16, u64>>,
    pub audit_events_total: AtomicU64,
    pub audit_drops_total: AtomicU64,
}

Hot-path counters owned by ServerState. All fields are atomic so every transport (UDS via atd-server, HTTP via atd-server-http) and every dispatch path can bump them without coordinating.

Fields

accepted_connections: AtomicU64

Total UDS / HTTP connections accepted since startup.

dispatched_requests: AtomicU64

Total Request frames dispatched (Ping, Hello, ToolList, ToolSchema, RunTool — every variant counts).

dispatch_errors_by_code: Mutex<BTreeMap<u16, u64>>

Per-error-code counter, lazily allocated. Keyed by Response::Error.code (the same u16s atd_protocol::ERR_* constants define). Sparse: most codes are never hit on a given server.

audit_events_total: AtomicU64

Total audit events successfully enqueued onto the audit sink.

audit_drops_total: AtomicU64

Total audit events dropped because the audit sink’s queue was full (SP-concurrency-baseline §5.4 mpsc backpressure).

Implementations

impl MetricsCounters

pub fn record_error(&self, code: u16)

Bump a dispatch-error code counter. Called from dispatch error branches. Lock contention is acceptable here: errors are by definition tail events; the success hot path doesn’t touch this map.

pub fn snapshot(&self) -> MetricsSnapshot

Capture a snapshot suitable for serializing into a /metrics body or a health-check endpoint.

Trait Implementations

impl Debug for MetricsCounters

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for MetricsCounters

fn default() -> MetricsCounters

Returns the “default value” for a type.