Trait ResourceUpdateHandler 

pub trait ResourceUpdateHandler:
    Send
    + Sync
    + Debug {
    // Required method
    fn handle_resource_update<'life0, 'async_trait>(
        &'life0 self,
        notification: ResourceUpdateNotification,
    ) -> Pin<Box<dyn Future<Output = HandlerResult<()>> + Send + 'async_trait>>
       where Self: 'async_trait,
             'life0: 'async_trait;
}

Handler for resource update notifications

Resource update handlers receive notifications when resources that the client has subscribed to are modified. This enables reactive updates to cached data or UI refreshes when server-side resources change.

Examples

use turbomcp_client::handlers::{ResourceUpdateHandler, ResourceUpdateNotification, HandlerResult};
use async_trait::async_trait;

#[derive(Debug)]
struct CacheInvalidationHandler;

#[async_trait]
impl ResourceUpdateHandler for CacheInvalidationHandler {
    async fn handle_resource_update(
        &self,
        notification: ResourceUpdateNotification,
    ) -> HandlerResult<()> {
        println!("Resource {} was {:?}",
            notification.uri,
            notification.change_type);
         
        // In a real implementation, you might:
        // - Invalidate cached data for this resource
        // - Refresh UI components that display this resource
        // - Log the change for audit purposes
        // - Trigger dependent computations
         
        Ok(())
    }
}

Required Methods

fn handle_resource_update<'life0, 'async_trait>( &'life0 self, notification: ResourceUpdateNotification, ) -> Pin<Box<dyn Future<Output = HandlerResult<()>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait,

Handle a resource update notification

This method is called when a subscribed resource changes on the server.

Arguments

• notification - Information about the resource change

Returns

Returns Ok(()) if the notification was processed successfully.

Implementors

impl ResourceUpdateHandler for LoggingResourceUpdateHandler