Archived: This project has been moved back into https://github.com/emit-rs/emit.
emit is a structured logging framework for manually instrumenting Rust applications with an expressive syntax inspired by Message Templates.
emit represents all diagnostics as events; a combination of timestamp or timespan, template, and properties. Traditional log records, spans in a distributed trace, and metric samples are all represented as events. Having a unified model of all these signals means you can always capture your diagnostics in one way or another.
[dependencies.emit]
version = "0.11.0-alpha.2"
[dependencies.emit_term]
version = "0.11.0-alpha.2"use std::time::Duration;
fn main() {
let rt = emit::setup()
.emit_to(emit_term::stdout())
.init();
greet("Rust");
rt.blocking_flush(Duration::from_secs(5));
}
#[emit::span("Greet {user}")]
fn greet(user: &str) {
emit::info!("Hello, {user}!");
}
This is alpha-level software. It implements a complete framework but has almost no tests and needs a lot more documentation.
See the examples directory and emit documentation for how to get started with emit.