Struct Extension 

pub struct Extension<T>(pub Arc<T>);

Extractor for custom extension data.

Retrieves data that was previously stored in extensions by middleware or other handlers.

Examples

Authentication Data

use wsforge::prelude::*;
use std::sync::Arc;

#[derive(Clone)]
struct AuthData {
    user_id: u64,
    role: String,
}

async fn protected_handler(Extension(auth): Extension<AuthData>) -> Result<String> {
    Ok(format!("User {} with role {}", auth.user_id, auth.role))
}

Tuple Fields

0: Arc<T>

Trait Implementations

impl<T: Send + Sync + Clone + 'static> FromMessage for Extension<T>

fn from_message<'life0, 'life1, 'life2, 'life3, 'async_trait>( _message: &'life0 Message, _conn: &'life1 Connection, _state: &'life2 AppState, extensions: &'life3 Extensions, ) -> Pin<Box<dyn Future<Output = Result<Self>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait, 'life3: 'async_trait,

Extracts Self from the message and context.