Function validate_trace_id

crates/flowtrace-core/src/validate.rs:109–117

Slug-shape check for a candidate trace id. Same rule used by `validate` for `Trace.id`, exposed standalone so callers (e.g. `trace init`) can reject bad ids without constructing a full `Trace`.

(id: &str)

/// for `Trace.id`, exposed standalone so callers (e.g. `trace init`) can
/// reject bad ids without constructing a full `Trace`.
pub fn validate_trace_id(id: &str) -> Result<()> {
    if !trace_id_re().is_match(id) {
        return Err(TraceError::Validation(format!(
            "id `{}` must be a slug: start with a letter, then [a-z0-9-], 1–63 chars total",
            id
        )));
    }
    Ok(())
}

pub fn validate(r: &Trace) -> Result<()> {
    validate_trace_id(&r.id)?;