Struct InMemoryCommandBus 

pub struct InMemoryCommandBus { /* private fields */ }

基于内存的 CommandBus 实现

• 通过 (CommandTypeId, ResultTypeId) 注册不同 Command 对应的 Handler
• 运行时以类型擦除（Any）方式进行调度，并在调用端进行结果还原

Implementations

impl InMemoryCommandBus

pub fn new() -> Self

pub fn register<C, R, H>(&self, handler: Arc<H>) -> Result<(), AppError>

where C: Send + 'static, R: Send + 'static, H: CommandHandler<C, R> + Send + Sync + 'static,

注册命令处理器

impl InMemoryCommandBus

pub fn registered_commands(&self) -> Vec<&'static str>

获取已注册的命令类型名列表（只读视图）

Trait Implementations

impl CommandBus for InMemoryCommandBus

fn dispatch<'life0, 'life1, 'async_trait, C, R>( &'life0 self, ctx: &'life1 AppContext, cmd: C, ) -> Pin<Box<dyn Future<Output = Result<R, AppError>> + Send + 'async_trait>>

where C: Send + 'static + 'async_trait, R: Send + 'static + 'async_trait, Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

分发命令到对应处理器

impl Default for InMemoryCommandBus

fn default() -> Self

Returns the “default value” for a type.