Struct AppState 

pub struct AppState {
    pub graph: SharedGraph,
    pub namespace: RwLock<DefNamespace>,
    pub auth: AuthManager,
    pub watches: WatchManager,
    pub actions: ActionRegistry,
    pub his: Box<dyn HistoryProvider>,
    pub started_at: Instant,
}

Shared application state injected into every Axum handler via State.

Fields

graph: SharedGraph

Thread-safe entity graph.

namespace: RwLock<DefNamespace>

Haystack 4 ontology namespace for def/spec operations.

auth: AuthManager

SCRAM authentication manager.

watches: WatchManager

Watch subscription manager for change polling.

actions: ActionRegistry

Action dispatch registry for the invokeAction op.

his: Box<dyn HistoryProvider>

Pluggable time-series history store for hisRead/hisWrite.

started_at: Instant

Instant when the server was started, used for uptime calculation.