tower-fault-injector

tower-fault-injector is a library for injecting various faults into a tower::Service.

Layers

You can use the following layers to inject faults into a service:

• ErrorLayer - randomly inject errors into a service.
• LatencyLayer - randomly add latency into a service.

Example usage

use tower_fault_injector::latency::LatencyLayer;
use tower::{service_fn, ServiceBuilder};

async fn my_service() -> Result<(), ()> {
    Ok(())
}

// Initialize a LatencyLayer with a 10% probability of injecting
// 200 to 500 milliseconds of latency.
let latency_layer = LatencyLayer::new(0.1, 200..500);

let service = ServiceBuilder::new()
    .layer(latency_layer)
    .service(service_fn(my_service));

lib.rs:

Fault injection utilities for tower

This crate provides tower::Layers that can be used to inject various faults into a tower::Service.

Layers

You can use the following layers to inject faults into a service:

• ErrorLayer - randomly inject errors into a service.
• LatencyLayer - randomly add latency into a service.

Example

use tower_fault_injector::latency::LatencyLayer;
use tower::{service_fn, ServiceBuilder};

// Initialize a LatencyLayer with a 10% probability of injecting
// 200 to 500 milliseconds of latency.
let latency_layer = LatencyLayer::new(0.1, 200..500).unwrap();

let service = ServiceBuilder::new()
    .layer(latency_layer)
    .service(service_fn(my_service));