KallspArning

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Anvand load_config_with_figment for att behalla Figment-grafen som anvands av runtime-laddningen:

#![allow(unused)]
fn main() {
use rust_config_tree::load_config_with_figment;

let (config, figment) = load_config_with_figment::<AppConfig>("config.yaml")?;
let _ = config;
Ok::<(), Box<dyn std::error::Error + Send + Sync>>(())
}

Det returnerade Figment-vardet kan besvara kallfragor for runtime-varden:

#![allow(unused)]
fn main() {
if let Some(metadata) = figment.find_metadata("database.pool_size") {
    let source = metadata.interpolate(
        &figment::Profile::Default,
        &["database", "pool_size"],
    );

    println!("database.pool_size came from {source}");
}
}

For varden som tillhandahalls av ConfiqueEnvProvider returnerar interpolation det ursprungliga miljovariabelnamnet som deklarerats i schemat:

database.pool_size came from APP_DATABASE_POOL_SIZE

TRACE-handelse

Laddaren skickar kallspArningshandelser med tracing::trace!. Den gor det bara nar TRACE ar aktiverat:

#![allow(unused)]
fn main() {
use rust_config_tree::{load_config_with_figment, trace_config_sources};

let (config, figment) = load_config_with_figment::<AppConfig>("config.yaml")?;

// If the tracing subscriber is initialized after config loading, emit the
// same source events again after installing the subscriber.
trace_config_sources::<AppConfig>(&figment);
let _ = config;
Ok::<(), Box<dyn std::error::Error + Send + Sync>>(())
}

Varje handelse anvander target rust_config_tree::config och innehaller:

• config_key: den punktade konfigurationsnyckeln.
• source: renderad kallmetadata.

Varden som bara kommer fran confique-standardvarden saknar Figment-runtime-metadata. De rapporteras som confique default or unset optional field.