Crate otlp_sigv4_client 

A SigV4-compatible HTTP client wrapper for OpenTelemetry OTLP exporters.

This crate provides a wrapper that adds AWS SigV4 signing capabilities to any OpenTelemetry HTTP client implementation. It’s particularly useful when sending telemetry data to AWS services that require SigV4 authentication. This crate is part of the serverless-otlp-forwarder project, which provides a comprehensive solution for OpenTelemetry telemetry collection in AWS Lambda environments.

Features

• reqwest - Includes reqwest as a dependency (enabled by default)

The client works with any HTTP client that implements the opentelemetry_http::HttpClient trait.

Example

use aws_credential_types::Credentials;
use otlp_sigv4_client::SigV4ClientBuilder;
use opentelemetry_otlp::{HttpExporterBuilder, WithHttpConfig};
use reqwest::Client as ReqwestClient;

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    let credentials = Credentials::new(
        "access_key",
        "secret_key",
        None,
        None,
        "example",
    );

    let sigv4_client = SigV4ClientBuilder::new()
        .with_client(ReqwestClient::new())
        .with_credentials(credentials)
        .with_region("us-west-2")
        .with_service("xray")
        .build()?;

    let _exporter = HttpExporterBuilder::default()
        .with_http_client(sigv4_client)
        .build_span_exporter()?;

    Ok(())
}

Re-exports

pub use signing::sign_request;

Modules

signing

Request signing functionality for AWS SigV4

Structs

SigV4Client

A decorator that adds SigV4 signing capabilities to any HttpClient implementation

SigV4ClientBuilder

Builder for configuring and creating a SigV4Client

Enums

SigV4Error

Errors that can occur during SigV4 client operations

Type Aliases

SigningPredicate

Type alias for the request signing predicate