coreon-eip 0.1.0

Enterprise Integration Pattern processors for camel-rs.
Documentation 
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//! Pipeline — sequential composition of Processors.

use async_trait::async_trait;
use coreon_core::{Exchange, Processor, Result};
use std::sync::Arc;

pub struct Pipeline {
    steps: Vec<Arc<dyn Processor>>,
}

impl Pipeline {
    pub fn new(steps: Vec<Arc<dyn Processor>>) -> Arc<Self> {
        Arc::new(Self { steps })
    }
}

#[async_trait]
impl Processor for Pipeline {
    async fn process(&self, exchange: &mut Exchange) -> Result<()> {
        for step in &self.steps {
            step.process(exchange).await?;
            // Camel semantics: after each step, the step's OUT becomes the
            // next step's IN. Steps that don't write OUT leave the exchange
            // unchanged.
            exchange.advance();
        }
        Ok(())
    }
}