Struct AppState 

pub struct AppState {
    pub db: Arc<Mutex<Connection>>,
    pub config: Arc<SimConfig>,
}

Application state shared with every axum handler and middleware.

Cloning an AppState is cheap: it is two Arc bumps. Handlers receive it via axum::extract::State(AppState) thanks to Router::with_state.

Fields

db: Arc<Mutex<Connection>>

Single global SQLite connection. Lock scope is always synchronous (never across .await) so the mutex never stalls the tokio runtime.

config: Arc<SimConfig>

Runtime configuration, shared read-only.

Implementations

impl AppState

pub fn new(conn: Connection, config: SimConfig) -> Self

Construct a new state from a ready-to-use connection and config.

Trait Implementations

impl Clone for AppState

fn clone(&self) -> AppState

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.