Crate prefer_db 

Database source for prefer configuration library.

This crate provides a DbSource that implements prefer::Source, allowing configuration to be loaded from a database and layered with other prefer sources.

Example

use prefer::{Config, ConfigBuilder};
use prefer_db::{DbSource, ConfigLoader, ConfigEntry};
use async_trait::async_trait;

struct MyDbLoader {
    // your database connection
}

#[async_trait]
impl ConfigLoader for MyDbLoader {
    async fn load_config(&self) -> Option<ConfigEntry> {
        // Load from your database
        Some(ConfigEntry {
            format: "json".to_string(),
            data: r#"{"key": "value"}"#.to_string(),
        })
    }

    fn name(&self) -> &str {
        "my_database"
    }
}

#[tokio::main]
async fn main() -> prefer::Result<()> {
    let config = Config::builder()
        .add_source(DbSource::new(MyDbLoader { /* ... */ }))
        .add_file("config.toml")  // File overrides DB
        .build()
        .await?;

    Ok(())
}

Structs

ConfigEntry

A configuration entry loaded from the database.

DbSource

A prefer Source that loads configuration from a database.

Traits

ConfigLoader

Trait for loading configuration from a database.