opentelemetry-surf

Add OpenTelemetry tracing support to your Surf clients. Be part of the new observability movement!

Notes

• It is heavily inspired by opentelemetry-tide crate; surf and tide share very similar middleware structure. Thank you, dear @http-rs folks! 🙇🏻‍♂️
• It only implements very basic request tracing on the middleware layer. If something is missing, please open an issue and describe your desired feature or create a PR with a change.
• It can record http request/response life cycle events when used with isahc and its metrics feature enabled.
• You probably do not want to use it in production. 🤷

How to use

# Run jaeger in background
docker run -d \
  -p6831:6831/udp -p6832:6832/udp -p16686:16686 -p14268:14268 \
  jaegertracing/all-in-one:latest


# Run simple client example with tracing middleware
cargo run --example simple

# Run metrics client example (uses isahc with metrics enabled)
cargo run --example metrics --features isahc-metrics

# Open browser and view the traces
firefox http://localhost:16686/

Code example

Cargo.toml

async-std = { version = "1.10", features = ["attributes"] }
opentelemetry = { version = "0.17", features = ["rt-async-std"] }
opentelemetry-jaeger = { version = "0.16", features = ["rt-async-std"] }
opentelemetry-surf = "0.6"

client.rs

#[async_std::main]
async fn main() -> surf::Result<()> {
    let _tracer = opentelemetry_jaeger::new_pipeline().install_batch(opentelemetry::runtime::AsyncStd)?;
    let otel_mw = opentelemetry_surf::OpenTelemetryTracingMiddleware::default();
    let client = surf::client().with(otel_mw);
    let res = client.get("https://httpbin.org/get").await?;
    dbg!(res);

    opentelemetry::global::shutdown_tracer_provider();
    Ok(())
}

Cargo Features

Safety

This crate uses #![forbid(unsafe_code)] to ensure everything is implemented in 100% Safe Rust.

License