reqwest-metrics

Metrics.rs integration for reqwest using reqwest-middleware

Features

• Adheres to Open Telemetry HTTP Client Semantic Conventions
• Customizable labels

Usage

let client = ClientBuilder::new(reqwest::Client::new())
    .with(MetricsMiddleware::new())
    .build();

Configuration

Overriding label names

let client = ClientBuilder::new(reqwest::Client::new())
    .with(
        MetricsMiddleware::builder()
            .http_request_method_label("method")
            .http_response_status_label("status")
            .server_address_label("host")
            .build(),
    )
    .build();

Supported metrics:

• http.client.request.duration
• http.client.request.body.size
• http.client.response.body.size

Supported labels:

• http_request_method
• server_address
• server_port
• error_type
• http_response_status_code
• network_protocol_name
• network_protocol_version
• url_scheme

Motivation

This crate is heavily inspired by the HTTP Client metrics provided by Spring. This crate aims to provide the same functionality while adhereing to Otel semantic conventions.