fastC

fastc-core · structured leveled logging

fastc-core-log

fastc-core-log is the structured logging package in fastc-core. It offers five levels and both JSON and human-readable output, and — true to fastC's capability model — writes to a sink you pass in rather than reaching for ambient stderr.

Repository API docs All packages
capability none — pure, does no I/O

What it ships (v0.1.0)

  • Five levels: trace, debug, info, warn, error
  • JSON or human-readable formatting
  • Writes to a caller-provided sink, not ambient stderr
  • Structured key/value fields

When to use it

Services and CLIs that need auditable, machine-parseable logs.

Example

use log::info;

fn run(caps: Caps) -> i32 {
  info("starting up");
  return 0;
}
fastc-core-log — minimal usage fastc-core-log v0.1.0

Roadmap

Log sampling and per-module level filters land in v0.2.

Provenance

Like every fastc-core package, fastc-core-log ships with content-hashed, cosign-keyless-signed releases and SLSA L3 provenance. It is vendored, not pulled from a central registry — there is no account to compromise.

See also