Struct tracing_opentelemetry::OpenTelemetryLayer

pub struct OpenTelemetryLayer<S, T> { /* fields omitted */ }

An OpenTelemetry propagation layer for use in a project that uses tracing.

Implementations

impl<S, T> OpenTelemetryLayer<S, T> where
    S: Subscriber + for<'span> LookupSpan<'span>,
    T: Tracer + PreSampledTracer + 'static, 

pub fn new(tracer: T) -> Self

Set the Tracer that this layer will use to produce and track OpenTelemetry Spans.

Examples

use tracing_opentelemetry::OpenTelemetryLayer;
use tracing_subscriber::layer::SubscriberExt;
use tracing_subscriber::Registry;

// Create a jaeger exporter pipeline for a `trace_demo` service.
let tracer = opentelemetry_jaeger::new_pipeline()
    .with_service_name("trace_demo")
    .install_simple()
    .expect("Error initializing Jaeger exporter");

// Create a layer with the configured tracer
let otel_layer = OpenTelemetryLayer::new(tracer);

// Use the tracing subscriber `Registry`, or any other subscriber
// that impls `LookupSpan`
let subscriber = Registry::default().with(otel_layer);

pub fn with_tracer<Tracer>(
    self,
    tracer: Tracer
) -> OpenTelemetryLayer<S, Tracer> where
    Tracer: Tracer + PreSampledTracer + 'static, 

Set the Tracer that this layer will use to produce and track OpenTelemetry Spans.

Examples

use tracing_subscriber::layer::SubscriberExt;
use tracing_subscriber::Registry;

// Create a jaeger exporter pipeline for a `trace_demo` service.
let tracer = opentelemetry_jaeger::new_pipeline()
    .with_service_name("trace_demo")
    .install_simple()
    .expect("Error initializing Jaeger exporter");

// Create a layer with the configured tracer
let otel_layer = tracing_opentelemetry::layer().with_tracer(tracer);

// Use the tracing subscriber `Registry`, or any other subscriber
// that impls `LookupSpan`
let subscriber = Registry::default().with(otel_layer);

pub fn with_tracked_inactivity(self, tracked_inactivity: bool) -> Self

Sets whether or not spans metadata should include the busy time (total time for which it was entered), and idle time (total time the span existed but was not entered).

Trait Implementations

impl<S> Default for OpenTelemetryLayer<S, NoopTracer> where
    S: Subscriber + for<'span> LookupSpan<'span>, 

fn default() -> Self

Returns the “default value” for a type.

impl<S, T> Layer<S> for OpenTelemetryLayer<S, T> where
    S: Subscriber + for<'span> LookupSpan<'span>,
    T: Tracer + PreSampledTracer + 'static, 

fn new_span(&self, attrs: &Attributes<'_>, id: &Id, ctx: Context<'_, S>)

Creates an OpenTelemetry Span for the corresponding tracing Span.

fn on_enter(&self, id: &Id, ctx: Context<'_, S>)

Notifies this layer that a span with the given ID was entered.

fn on_exit(&self, id: &Id, ctx: Context<'_, S>)

Notifies this layer that the span with the given ID was exited.

fn on_record(&self, id: &Id, values: &Record<'_>, ctx: Context<'_, S>)

Record OpenTelemetry attributes for the given values.

fn on_follows_from(&self, id: &Id, follows: &Id, ctx: Context<'_, S>)

Notifies this layer that a span with the ID span recorded that it follows from the span with the ID follows.

fn on_event(&self, event: &Event<'_>, ctx: Context<'_, S>)

Records OpenTelemetry Event data on event.

Note: an ERROR-level event will also set the OpenTelemetry span status code to Error, signaling that an error has occurred.

fn on_close(&self, id: Id, ctx: Context<'_, S>)

Exports an OpenTelemetry Span on close.

unsafe fn downcast_raw(&self, id: TypeId) -> Option<*const ()>

pub fn register_callsite(
    &self,
    metadata: &'static Metadata<'static>
) -> Interest

Registers a new callsite with this layer, returning whether or not the layer is interested in being notified about the callsite, similarly to Subscriber::register_callsite.

pub fn enabled(&self, metadata: &Metadata<'_>, ctx: Context<'_, S>) -> bool

Returns true if this layer is interested in a span or event with the given metadata in the current Context, similarly to Subscriber::enabled.

pub fn on_id_change(&self, _old: &Id, _new: &Id, _ctx: Context<'_, S>)

Notifies this layer that a span ID has been cloned, and that the subscriber returned a different ID.

pub fn and_then<L>(self, layer: L) -> Layered<L, Self, S> where
    L: Layer<S>, 

Composes this layer around the given Layer, returning a Layered struct implementing Layer.

pub fn with_subscriber(self, inner: S) -> Layered<Self, S, S>

Composes this Layer with the given Subscriber, returning a Layered struct that implements Subscriber.