Struct OtelTracingLayerBuilder 

pub struct OtelTracingLayerBuilder<E> { /* private fields */ }

Builder for configuring an OtelTracingLayer.

Example

use opentelemetry_lambda_tower::{OtelTracingLayer, HttpEventExtractor};
use std::time::Duration;

let layer = OtelTracingLayer::builder(HttpEventExtractor::new())
    .tracer_provider(my_provider)
    .flush_timeout(Duration::from_secs(10))
    .build();

Implementations

impl<E> OtelTracingLayerBuilder<E>

pub fn new(extractor: E) -> Self

Creates a new builder with the given extractor.

pub fn tracer_provider(self, provider: Arc<SdkTracerProvider>) -> Self

Sets the tracer provider to use for flushing.

If not set, the layer will attempt to use the global tracer provider.

pub fn logger_provider(self, provider: Arc<SdkLoggerProvider>) -> Self

Sets the logger provider to use for flushing.

If not set, logs will not be explicitly flushed after each invocation. This is required if you want to ensure logs are exported before Lambda freezes the execution environment.

pub fn flush_on_end(self, flush: bool) -> Self

Sets whether to flush the tracer provider after each invocation.

Default: true

Flushing ensures spans are exported before Lambda freezes the execution environment. Disable only if you’re handling flushing elsewhere (e.g., in an extension).

pub fn flush_timeout(self, timeout: Duration) -> Self

Sets the timeout for flush operations.

Default: 5 seconds

If the flush doesn’t complete within this duration, it’s abandoned to prevent blocking the Lambda response.

pub fn build(self) -> OtelTracingLayer<E>

Builds the configured layer.