engine/src/config/mod.rs - main - mcmare/RustAPI

mod auth;
mod connections;
mod endpoint;
mod field_type;

pub use auth::load_auth_tokens;
pub use connections::{ConnectionDef, DbDriver};
pub use endpoint::{CrudOperation, EndpointDef, EndpointKind, HttpMethod};
pub use field_type::FieldType;

use anyhow::{bail, Result};
use std::{collections::HashMap, path::Path};

#[derive(Debug)]
pub struct Config {
    pub connections: HashMap<String, ConnectionDef>,
    pub endpoints: Vec<EndpointDef>,
}

/// Loads and validates everything under `config_dir`:
/// `connections.yaml` + every `.yaml`/`.yml` file under `endpoints/`.
/// Fails fast with a message naming the offending file/field rather than panicking,
/// since this config is meant to be hand-edited by non-Rust operators.
pub fn load_config(config_dir: &Path) -> Result<Config> {
    let connections = connections::load_connections(&config_dir.join("connections.yaml"))?;
    let endpoints = endpoint::load_endpoints(&config_dir.join("endpoints"), config_dir)?;

    for ep in &endpoints {
        if let EndpointKind::Crud { connection, .. } = &ep.kind {
            if !connections.contains_key(connection) {
                bail!(
                    "{}: references unknown connection '{connection}' (declared connections: {})",
                    ep.source_file.display(),
                    if connections.is_empty() {
                        "<none>".to_string()
                    } else {
                        connections.keys().cloned().collect::<Vec<_>>().join(", ")
                    }
                );
            }
        }
    }

    Ok(Config {
        connections,
        endpoints,
    })
}