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use std::{future::Future, time::Instant};
use actix_http::body::BoxBody;
use actix_utils::future::{ready, Ready};
use actix_web::{http::StatusCode, test::TestRequest, Error, HttpRequest, HttpResponse, Responder};
use criterion::{criterion_group, criterion_main, Criterion};
use futures_util::future::join_all;
// responder simulate the old responder trait.
trait FutureResponder {
type Error;
type Future: Future<Output = Result<HttpResponse, Self::Error>>;
fn future_respond_to(self, req: &HttpRequest) -> Self::Future;
}
// a simple wrapper type around string
struct StringResponder(String);
impl FutureResponder for StringResponder {
type Error = Error;
type Future = Ready<Result<HttpResponse, Self::Error>>;
fn future_respond_to(self, _: &HttpRequest) -> Self::Future {
// this is default builder for string response in both new and old responder trait.
ready(Ok(HttpResponse::build(StatusCode::OK)
.content_type("text/plain; charset=utf-8")
.body(self.0)))
}
}
impl Responder for StringResponder {
type Body = BoxBody;
fn respond_to(self, _: &HttpRequest) -> HttpResponse<Self::Body> {
HttpResponse::build(StatusCode::OK)
.content_type("text/plain; charset=utf-8")
.body(self.0)
}
}
fn future_responder(c: &mut Criterion) {
let rt = actix_rt::System::new();
let req = TestRequest::default().to_http_request();
c.bench_function("future_responder", move |b| {
b.iter_custom(|_| {
let futs = (0..100_000).map(|_| async {
StringResponder(String::from("Hello World!!"))
.future_respond_to(&req)
.await
});
let futs = join_all(futs);
let start = Instant::now();
let _res = rt.block_on(futs);
start.elapsed()
})
});
}
fn responder(c: &mut Criterion) {
let rt = actix_rt::System::new();
let req = TestRequest::default().to_http_request();
c.bench_function("responder", move |b| {
b.iter_custom(|_| {
let responders = (0..100_000).map(|_| StringResponder(String::from("Hello World!!")));
let start = Instant::now();
let _res = rt.block_on(async {
// don't need runtime block on but to be fair.
responders.map(|r| r.respond_to(&req)).collect::<Vec<_>>()
});
start.elapsed()
})
});
}
criterion_group!(responder_bench, future_responder, responder);
criterion_main!(responder_bench);
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