Crate hexeract_core 

Core traits and types for the Hexeract messaging framework.

This crate is the cross-cutting foundation that every other Hexeract crate depends on. It defines the marker traits for messages (Command, Query, Notification), the matching handler traits (CommandHandler, QueryHandler, NotificationHandler), the MessageEnvelope and HandlerContext passed alongside every dispatch, the Middleware / Next / Terminal pipeline primitives, the unified HexeractError type, and the HandlerRegistration metadata collected by the #[handler] macro.

Re-exports

pub use command::Command;

pub use context::HandlerContext;

pub use envelope::MessageEnvelope;

pub use error::HexeractError;

pub use error::NotificationFailure;

pub use handler::CommandHandler;

pub use handler::NotificationHandler;

pub use handler::QueryHandler;

pub use ids::CorrelationId;

pub use ids::MessageId;

pub use middleware::BoxOutput;

pub use middleware::Middleware;

pub use middleware::Next;

pub use middleware::Terminal;

pub use notification::Notification;

pub use query::Query;

pub use registration::HandlerKind;

pub use registration::HandlerRegistration;

Modules

command

Marker trait for messages expressing the intent to mutate state.

context

Contextual information propagated into every handler invocation.

envelope

Type-erased metadata carried alongside every dispatch.

error

Unified framework error type.

handler

Async handler traits dispatched by the mediator.

ids

Unique identifier newtypes for messages and correlations.

middleware

Middleware pipeline primitives.

notification

Marker trait for broadcast messages with fan-out semantics.

query

Marker trait for read-only messages asking for information.

registration

Handler registration metadata collected at link time by the #[handler] macro. Handler registration metadata collected at link time by the #[handler] procedural macro from hexeract-macros.