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Add cache-control header to HTTP responses based on mime

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This commit is contained in:
Felix Ableitner 2020-05-31 14:40:31 +02:00
parent 106ce6096b
commit 21e913192a
1 changed files with 35 additions and 0 deletions
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35
server/src/main.rs
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@ -1,8 +1,15 @@
extern crate lemmy_server;
#[macro_use]
extern crate diesel_migrations;
#[macro_use]
pub extern crate lazy_static;
use crate::lemmy_server::actix_web::dev::Service;
use actix::prelude::*;
use actix_web::body::Body;
use actix_web::dev::{ServiceRequest, ServiceResponse};
use actix_web::http::header::CONTENT_TYPE;
use actix_web::http::{header::CACHE_CONTROL, HeaderValue};
use actix_web::*;
use diesel::r2d2::{ConnectionManager, Pool};
use diesel::PgConnection;
@ -12,9 +19,16 @@ use lemmy_server::{
settings::Settings,
websocket::server::*,
};
use regex::Regex;
use std::{io, sync::Arc};
use tokio::sync::Mutex;
lazy_static! {
static ref CACHE_CONTROL_REGEX: Regex =
Regex::new("^((text|image)/.+|application/javascript)$").unwrap();
static ref CACHE_CONTROL_VALUE: String = format!("public, max-age={}", 365 * 24 * 60 * 60);
}
embed_migrations!();
#[actix_rt::main]
@ -51,6 +65,7 @@ async fn main() -> io::Result<()> {
let settings = Settings::get();
let rate_limiter = rate_limiter.clone();
App::new()
.wrap_fn(add_cache_headers)
.wrap(middleware::Logger::default())
.data(pool.clone())
.data(server.clone())
@ -75,3 +90,23 @@ async fn main() -> io::Result<()> {
.run()
.await
}
fn add_cache_headers<S>(
req: ServiceRequest,
srv: &mut S,
) -> impl Future<Output = Result<ServiceResponse, Error>>
where
S: Service<Request = ServiceRequest, Response = ServiceResponse<Body>, Error = Error>,
{
let fut = srv.call(req);
async move {
let mut res = fut.await?;
if let Some(content_type) = res.headers().get(CONTENT_TYPE) {
if CACHE_CONTROL_REGEX.is_match(content_type.to_str().unwrap()) {
let header_val = HeaderValue::from_static(&CACHE_CONTROL_VALUE);
res.headers_mut().insert(CACHE_CONTROL, header_val);
}
}
Ok(res)
}
}