Set up Rust applications

Export Rust application logs, traces and metrics with the OpenTelemetry SDK. See the connection details before starting.

Install packages

The onboarding setup uses the OpenTelemetry 0.33 SDK family:

cargo add opentelemetry opentelemetry_sdk opentelemetry-appender-tracing tracing tracing-subscriber
cargo add opentelemetry-otlp --features reqwest-rustls

The reqwest-rustls feature enables HTTPS for these HTTP exporters.

Configure the process

Create and load the shared environment file, then build authentication and set the standard SDK header. Use http/protobuf and the base HTTPS URL.

Register the SDK

Add these steps to your application's telemetry initialization:

1. Build a span exporter with opentelemetry_otlp::SpanExporter::builder().with_http().build()?. Pass it to SdkTracerProvider::builder().with_batch_exporter(...).
2. Build a metric exporter with opentelemetry_otlp::MetricExporter::builder().with_http().build()?. Pass it to SdkMeterProvider::builder().with_periodic_exporter(...).
3. Build a log exporter with opentelemetry_otlp::LogExporter::builder().with_http().build()?. Connect it to SdkLoggerProvider and use OpenTelemetryTracingBridge to connect application logging through tracing.
4. Register the providers and logging subscriber in your app, and shut down the providers when the app stops so buffered data can be exported.

Keep the endpoint in the environment rather than calling with_endpoint. The HTTP exporters append /v1/logs, /v1/traces and /v1/metrics and decode %20 in the authentication setting.

Start the app from the configured environment, generate logs and instrumented work, then check the result.