pdc-core is library that gives access to high proformance load testing primatives.
pdc-core exposes most of its functionality via the TrafficGenerator and Scenario traits.
A TrafficGenerator does what it says on the tin, it generates some type of network traffic.
TrafficGenerator's have two different modes: track a load curve, or max traffic (firehose).
Generators don't necessarily have to send HTTP traffic either. Load data is exposed through
crossbeam chanels.
A Scenario's job is fairly simple. Given an elapsed time T (ms), a Scenario should produce a target
rate R (requests/sec).
pdc-core provides functionality out of the box via handy implementations like ReqwestGenerator and
exponentialScenario.
```
use pdccore::generator::reqwestgenerator::ReqwestGenerator;
use pdccore::generator::TrafficGenerator;
use pdccore::scenario::ConstantScenario;
use reqwest;
use std::str::FromStr;
use std::thread;
// generate 10000 packets per second for 100000 ms (100 sec) let scene = ConstantScenario { rate: 10000., duration: 100000, };
let maxtcpconnections = 300; let warmup = true; let method = reqwest::Method::fromstr("GET").unwrap(); let req = reqwest::Request::new( method, reqwest::Url::fromstr("http://127.0.0.1:8080").unwrap(), );
// Create a generator backed by reqwest let mut generator = ReqwestGenerator::new(scene, maxtcpconnections, warmup, req);
// Create a Reciever to get data while the generator is running let numsent = generator.getsentpacketschannel();
thread::spawn(move || { generator.run_scenario(); });
// Continuesly print out the number of packets sent. loop { if let Ok(n) = numsent.tryrecv() { println!("{}", n); } else { thread::sleep(std::time::Duration::from_millis(100)); } } ```