Struct TelemetryCfg 

pub struct TelemetryCfg {
    pub enabled: bool,
    pub endpoint: String,
    pub sample_rate: f64,
    pub service_name: String,
    pub capture_content: bool,
    pub max_content_bytes: usize,
    pub timeout_ms: u64,
}

OTLP span emission ([llm.telemetry]). When enabled, the gateway emits one OpenInference/OTLP span per metered LLM request to endpoint (an OTLP/HTTP /v1/traces receiver — e.g. evald), carrying the model, per-tier tokens, computed cost, and server-side TTFT/TPOT/latency already attached. Because the proxy sits in the request path, this needs no client SDK and is immune to the import-order / per-framework instrumentor drift that plagues in-process instrumentation. Emission is fire-and-forget — it never blocks or fails the client response. Off by default.

Fields

enabled: bool

Master switch. Default false.

endpoint: String

OTLP/HTTP traces endpoint, e.g. http://127.0.0.1:4318/v1/traces. Required when enabled.

sample_rate: f64

Fraction of LLM requests to emit a span for, 0.0–1.0 (deterministic per-trace sampling — the same trace always gets the same verdict). Default 1.0 (all).

service_name: String

service.name resource attribute on emitted spans. Default edgeguard.

capture_content: bool

Capture the (DLP-redacted) prompt/response as input.value/output.value on the span. Off by default — content leaves the gateway only when this is explicitly enabled, and when an [llm.dlp] engine is configured the captured content is redacted before it is emitted.

max_content_bytes: usize

Cap on each captured content field in bytes (truncated past this). Default 8192.

timeout_ms: u64

Per-emit timeout for the background POST, in milliseconds. Default 2000.

Trait Implementations

impl Clone for TelemetryCfg

fn clone(&self) -> TelemetryCfg

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for TelemetryCfg

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

Formats the value using the given formatter.

impl Default for TelemetryCfg

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for TelemetryCfg

where TelemetryCfg: Default,

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.