openinfra-logger (Rust)

OpenInfra Logger — zero-dependency, RFC 8259-compliant structured logging. The same JSON shape is emitted by sibling implementations for Node.js, Python and Go, so polyglot stacks see a single, consistent log format.

Install

[dependencies]
openinfra-logger = "0.1"

Quickstart

use openinfra_logger::{Logger, Config};
use std::collections::HashMap;

fn main() {
    let logger = Logger::new(Config::default());
    let mut md = HashMap::new();
    md.insert("user_id".to_string(), "u_8821".to_string());
    md.insert("card".to_string(), "4111-1111-1111-1111".to_string());

    logger.log("order.placed", "info", md);
    // → {"timestamp":"…","level":"info","message":"order.placed","user_id":"u_8821","card":"4111-1111-1111-1111"}
}

Configuration

use openinfra_logger::{Logger, Config};
use std::collections::HashMap;

let mut defaults = HashMap::new();
defaults.insert("service".to_string(), "payment-gateway".to_string());

let cfg = Config {
    transports: vec!["console".to_string(), "file".to_string()],
    file_path: "./production.log".to_string(),
    default_metadata: defaults,
};

let logger = Logger::new(cfg);
logger.log("Payment processed", "info", HashMap::new());

Why zero-dependency

This crate compiles with no transitive crates — only std. The trade-off:

• ✅ Faster compile, smaller binaries, no supply-chain surface, no serde version churn
• ✅ Works in no_std-adjacent environments after minimal porting
• ⚠️ The JSON builder is hand-rolled but RFC 8259-compliant (quotes, backslashes, control chars all escaped)
• ⚠️ Metadata values are String in this version; structured/typed values land in 0.2.

Links

• Source — https://github.com/jonathascordeiro20/openinfra-logger
• Project site — https://openinfralogger.fun
• Changelog — https://github.com/jonathascordeiro20/openinfra-logger/blob/main/CHANGELOG.md

License

MIT — see LICENSE.