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CallInterceptor

a2a_protocol_sdk::client::interceptor

Trait CallInterceptor 

Source 
pub trait CallInterceptor:
    Send
    + Sync
    + 'static {
    // Required methods
    fn before<'a>(
        &'a self,
        req: &'a mut ClientRequest,
    ) -> impl Future<Output = Result<(), ClientError>> + Send + 'a;
    fn after<'a>(
        &'a self,
        resp: &'a ClientResponse,
    ) -> impl Future<Output = Result<(), ClientError>> + Send + 'a;
}
Expand description

Hooks called before every A2A request and after every response.

Implement this trait to add cross-cutting concerns such as authentication, logging, or metrics. Register interceptors via crate::ClientBuilder::with_interceptor.

§Object-safety note

This trait uses impl Future return types with explicit lifetimes, which is not object-safe. Internally the SDK wraps implementations in a boxed-future shim. Callers implement the ergonomic trait API.

Required Methods§

Source

fn before<'a>( &'a self, req: &'a mut ClientRequest, ) -> impl Future<Output = Result<(), ClientError>> + Send + 'a

Called before the request is sent.

Mutate req to modify parameters or inject headers.

Source

fn after<'a>( &'a self, resp: &'a ClientResponse, ) -> impl Future<Output = Result<(), ClientError>> + Send + 'a

Called after a successful response is received.

Dyn Compatibility§

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors§