Add compression and logging middleware
parent
e17d672954
commit
cbcdeb3350
GPG Key ID:
8A7167CBC2CC9F0F
@ -1,15 +1,17 @@
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[package]
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name = "statue_rs"
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name = "statue"
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version = "0.1.0"
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edition = "2021"
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# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
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[dependencies]
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anyhow = "1.0.58"
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brotli = "3.3.4"
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flate2 = "1.0.24"
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hyper = { version = "0.14.20", default-features = false, features = ["http1", "http2", "server", "tcp", "client"] }
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num_cpus = "1.13.1"
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reqwest = { version = "0.11.11", default-features = false, features = ["rustls-tls"] }
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serde = { version = "1.0.140", features = ["derive"] }
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serde_json = "1.0.82"
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tokio = { version = "1.20.1", features = ["rt", "macros", "rt-multi-thread", "fs", "process"] }
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tower = "0.4.13"
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@ -0,0 +1,669 @@
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use std::{
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cmp::Ordering,
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future::Future,
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pin::Pin,
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task::{Context, Poll},
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time::Instant,
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};
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use brotli::{enc::BrotliEncoderParams, CompressorWriter};
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use flate2::{
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write::{DeflateEncoder, GzEncoder},
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Compression,
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};
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use hyper::{
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body::{Buf, Bytes, HttpBody},
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header::HeaderValue,
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Method, Request, Response, Uri,
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};
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use tower::{Layer, Service};
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#[derive(Clone)]
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pub struct Log;
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impl<S> Layer<S> for Log {
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type Service = LogService<S>;
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fn layer(&self, inner: S) -> Self::Service {
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LogService::new(inner)
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}
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}
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#[derive(Clone)]
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pub struct LogService<S> {
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inner: S,
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}
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impl<S> LogService<S> {
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fn new(inner: S) -> Self {
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Self { inner }
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}
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}
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impl<S, ReqBody, ResBody> Service<Request<ReqBody>> for LogService<S>
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where
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S: Service<Request<ReqBody>, Response = Response<ResBody>>,
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{
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type Response = S::Response;
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type Error = S::Error;
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type Future = LogServiceFuture<S::Future>;
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fn poll_ready(
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&mut self,
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cx: &mut Context<'_>,
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) -> Poll<Result<(), Self::Error>> {
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self.inner.poll_ready(cx)
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}
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fn call(&mut self, req: Request<ReqBody>) -> Self::Future {
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let uri = req.uri().clone();
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let method = req.method().clone();
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let fut = self.inner.call(req);
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LogServiceFuture {
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inner: fut,
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uri,
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method,
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start: None,
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}
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}
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}
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pub struct LogServiceFuture<InnerFut> {
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uri: Uri,
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method: Method,
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inner: InnerFut,
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start: Option<Instant>,
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}
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impl<ResBody, InnerFut, InnerFutError> Future for LogServiceFuture<InnerFut>
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where
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InnerFut: Future<Output = Result<Response<ResBody>, InnerFutError>>,
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{
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type Output = InnerFut::Output;
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fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
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let (uri, method, inner, mut start) = unsafe {
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let this = self.get_unchecked_mut();
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(
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&this.uri,
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&this.method,
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Pin::new_unchecked(&mut this.inner),
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Pin::new_unchecked(&mut this.start),
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)
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};
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start.get_or_insert(Instant::now());
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match inner.poll(cx) {
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Poll::Ready(r) => {
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let res = match r {
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Ok(res) => res,
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e => return Poll::Ready(e),
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};
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let start = unsafe { start.unwrap_unchecked() };
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let now = Instant::now();
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let diff = now - start;
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println!(
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"{} {} {} [{}ms]",
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method,
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uri,
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res.status(),
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diff.as_millis()
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);
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Poll::Ready(Ok(res))
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}
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p => p,
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}
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}
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}
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pub type Preference = u8;
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/// Compression algorithms and their associated prefence level. Higher is
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/// better
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#[derive(Clone)]
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pub struct AlgorithmPreferences {
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pub brotli: Option<(Preference, BrotliEncoderParams)>,
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pub gzip: Option<(Preference, Compression)>,
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pub deflate: Option<(Preference, Compression)>,
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}
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pub fn brotli_default_params(
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quality: u8,
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favor_cpu_efficiency: bool,
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) -> BrotliEncoderParams {
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BrotliEncoderParams {
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quality: quality as i32,
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favor_cpu_efficiency,
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..Default::default()
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}
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}
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#[derive(Clone)]
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pub struct CompressPredicate<ContentTypePredicateFn> {
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pub min_size: usize,
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pub content_type_predicate: ContentTypePredicateFn,
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}
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#[derive(Clone)]
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pub struct Compress<ContentTypePredicateFn> {
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pub algorithms: AlgorithmPreferences,
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pub predicate: CompressPredicate<ContentTypePredicateFn>,
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}
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impl<CTPF: Clone, S> Layer<S> for Compress<CTPF> {
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type Service = CompressService<S, CTPF>;
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fn layer(&self, inner: S) -> Self::Service {
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CompressService {
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compress: self.clone(),
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inner,
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}
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}
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}
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#[derive(Clone)]
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pub struct CompressService<S, CTPF> {
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compress: Compress<CTPF>,
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inner: S,
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}
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pub enum Algorithm {
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Brotli(BrotliEncoderParams),
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Deflate(Compression),
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Gzip(Compression),
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}
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impl<S, CTPF, ReqBody, ResBody> Service<Request<ReqBody>>
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for CompressService<S, CTPF>
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where
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S: Service<Request<ReqBody>, Response = Response<ResBody>>,
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CTPF: Clone + FnOnce(&str) -> bool,
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ResBody: HttpBody,
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{
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type Response = Response<CompressBody<ResBody>>;
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type Error = S::Error;
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type Future = CompressFuture<S::Future, CTPF>;
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fn poll_ready(
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&mut self,
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cx: &mut Context<'_>,
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) -> Poll<Result<(), Self::Error>> {
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self.inner.poll_ready(cx)
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}
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fn call(&mut self, req: Request<ReqBody>) -> Self::Future {
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let chosen_algorithm = match req.headers().get("accept-encoding") {
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None => None,
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Some(s) => choose_algorithm(&self.compress.algorithms, s),
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};
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let fut = self.inner.call(req);
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CompressFuture {
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inner: fut,
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chosen_algorithm,
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predicate: self.compress.predicate.clone(),
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}
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}
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}
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fn choose_algorithm(
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preferences: &AlgorithmPreferences,
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accept_encodings: &HeaderValue,
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) -> Option<Algorithm> {
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let accept_encodings = match accept_encodings.to_str().ok() {
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None => return None,
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Some(s) => s,
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};
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accept_encodings
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.split(',')
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.flat_map(|s| s.split(';').next())
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.map(|s| s.trim().to_string())
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.flat_map(|s| match s.as_str() {
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"br" => preferences
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.brotli
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.as_ref()
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.map(|p| (Algorithm::Brotli(p.1.clone()), p.0)),
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"gzip" => preferences
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.gzip
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.as_ref()
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.map(|p| (Algorithm::Gzip(p.1), p.0)),
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"deflate" => preferences
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.deflate
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.as_ref()
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.map(|p| (Algorithm::Deflate(p.1), p.0)),
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_ => None,
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})
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.max_by(|a, b| {
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if a.1 == b.1 {
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return Ordering::Greater;
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}
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a.1.cmp(&b.1)
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})
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.map(|(e, _)| e)
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}
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pub struct CompressFuture<InnerFut, ContentTypePredicateFn> {
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inner: InnerFut,
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chosen_algorithm: Option<Algorithm>,
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predicate: CompressPredicate<ContentTypePredicateFn>,
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}
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impl<InnerFut, CTPF, ResBody, InnerFutError> Future
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for CompressFuture<InnerFut, CTPF>
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where
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InnerFut: Future<Output = Result<Response<ResBody>, InnerFutError>>,
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CTPF: FnOnce(&str) -> bool + Clone,
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ResBody: HttpBody,
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{
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type Output = Result<Response<CompressBody<ResBody>>, InnerFutError>;
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fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
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let (chosen_algorithm, predicate, inner) = unsafe {
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let this = self.get_unchecked_mut();
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(
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&this.chosen_algorithm,
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&mut this.predicate,
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Pin::new_unchecked(&mut this.inner),
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)
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};
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match inner.poll(cx) {
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Poll::Ready(r) => {
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let res = match r {
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Ok(res) => res,
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Err(e) => return Poll::Ready(Err(e)),
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};
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let res = choose_body(res, chosen_algorithm, predicate.clone());
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Poll::Ready(Ok(res))
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}
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_ => Poll::Pending,
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}
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}
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}
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pub enum CompressBody<B> {
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None(B),
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Brotli(BrotliBody<B>),
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Gzip(GzipBody<B>),
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Deflate(DeflateBody<B>),
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}
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impl<B> HttpBody for CompressBody<B>
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where
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B: HttpBody,
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B::Data: Send + 'static,
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{
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type Data = Box<dyn Buf + Send + 'static>;
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type Error = B::Error;
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fn poll_data(
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self: Pin<&mut Self>,
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cx: &mut Context<'_>,
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) -> Poll<Option<Result<Self::Data, Self::Error>>> {
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match unsafe { self.get_unchecked_mut() } {
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CompressBody::Brotli(b) => unsafe { Pin::new_unchecked(b) }
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.poll_data(cx)
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.map(|o| o.map(|r| r.map(|b| Box::new(b) as Box<_>))),
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CompressBody::Gzip(b) => unsafe { Pin::new_unchecked(b) }
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.poll_data(cx)
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.map(|o| o.map(|r| r.map(|b| Box::new(b) as Box<_>))),
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CompressBody::Deflate(b) => unsafe { Pin::new_unchecked(b) }
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.poll_data(cx)
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.map(|o| o.map(|r| r.map(|b| Box::new(b) as Box<_>))),
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CompressBody::None(b) => unsafe { Pin::new_unchecked(b) }
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.poll_data(cx)
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.map(|o| o.map(|r| r.map(|b| Box::new(b) as Box<_>))),
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}
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}
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fn poll_trailers(
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self: Pin<&mut Self>,
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cx: &mut Context<'_>,
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) -> Poll<Result<Option<hyper::HeaderMap>, Self::Error>> {
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match unsafe { self.get_unchecked_mut() } {
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CompressBody::None(b) => {
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unsafe { Pin::new_unchecked(b) }.poll_trailers(cx)
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}
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CompressBody::Brotli(b) => {
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unsafe { Pin::new_unchecked(b) }.poll_trailers(cx)
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}
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CompressBody::Gzip(b) => {
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unsafe { Pin::new_unchecked(b) }.poll_trailers(cx)
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}
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CompressBody::Deflate(b) => {
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unsafe { Pin::new_unchecked(b) }.poll_trailers(cx)
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}
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}
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}
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}
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pub struct BrotliBody<B> {
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inner: B,
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compressor: Option<CompressorWriter<Vec<u8>>>,
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}
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impl<B: HttpBody> HttpBody for BrotliBody<B>
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where
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B::Data: Send + 'static,
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{
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type Data = Bytes;
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type Error = B::Error;
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fn poll_data(
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self: Pin<&mut Self>,
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cx: &mut Context<'_>,
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) -> Poll<Option<Result<Self::Data, Self::Error>>> {
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let (inner, compressor) = unsafe {
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let this = self.get_unchecked_mut();
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(Pin::new_unchecked(&mut this.inner), &mut this.compressor)
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};
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if compressor.is_none() {
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return Poll::Ready(None);
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}
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let data = match inner.poll_data(cx) {
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Poll::Ready(Some(Ok(d))) => Some(d),
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Poll::Ready(None) => None,
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Poll::Ready(Some(Err(e))) => return Poll::Ready(Some(Err(e))),
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Poll::Pending => return Poll::Pending,
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};
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match data {
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None => {
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let compressor =
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unsafe { compressor.take().unwrap_unchecked() };
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let buf = compressor.into_inner();
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Poll::Ready(Some(Ok(Bytes::from(buf))))
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}
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Some(d) => {
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let mut compressor =
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unsafe { compressor.as_mut().unwrap_unchecked() };
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let mut reader = d.reader();
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use std::io::Write;
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let _ = std::io::copy(&mut reader, &mut compressor);
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let _ = compressor.flush();
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let buf = compressor.get_ref().clone();
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compressor.get_mut().clear();
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Poll::Ready(Some(Ok(Bytes::from(buf))))
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}
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}
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}
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fn poll_trailers(
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self: Pin<&mut Self>,
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cx: &mut Context<'_>,
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) -> Poll<Result<Option<hyper::HeaderMap>, Self::Error>> {
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let inner = unsafe {
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let this = self.get_unchecked_mut();
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Pin::new_unchecked(&mut this.inner)
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};
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inner.poll_trailers(cx)
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}
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}
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impl<B> BrotliBody<B> {
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pub fn new(inner: B, params: &BrotliEncoderParams) -> Self {
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Self {
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inner,
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compressor: Some(CompressorWriter::with_params(
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Vec::new(),
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4096,
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params,
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)),
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}
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}
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}
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pub struct GzipBody<B> {
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inner: B,
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encoder: Option<GzEncoder<Vec<u8>>>,
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}
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impl<B> GzipBody<B> {
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pub fn new(inner: B, compression: Compression) -> Self {
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Self {
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inner,
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encoder: Some(GzEncoder::new(Vec::new(), compression)),
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}
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}
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}
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impl<B> HttpBody for GzipBody<B>
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where
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B: HttpBody,
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{
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type Data = Bytes;
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|
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type Error = B::Error;
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|
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fn poll_data(
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self: Pin<&mut Self>,
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cx: &mut Context<'_>,
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) -> Poll<Option<Result<Self::Data, Self::Error>>> {
|
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let (inner, encoder) = unsafe {
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let this = self.get_unchecked_mut();
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(Pin::new_unchecked(&mut this.inner), &mut this.encoder)
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};
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|
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if encoder.is_none() {
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return Poll::Ready(None);
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}
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let data = match inner.poll_data(cx) {
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Poll::Ready(Some(Ok(d))) => Some(d),
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Poll::Ready(None) => None,
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Poll::Ready(Some(Err(e))) => return Poll::Ready(Some(Err(e))),
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Poll::Pending => return Poll::Pending,
|
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};
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match data {
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None => {
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let encoder = unsafe { encoder.take().unwrap_unchecked() };
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let buf = encoder.finish().unwrap();
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|
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Poll::Ready(Some(Ok(Bytes::from(buf))))
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}
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Some(d) => {
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let mut encoder =
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unsafe { encoder.as_mut().unwrap_unchecked() };
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let mut reader = d.reader();
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let _ = std::io::copy(&mut reader, &mut encoder);
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let buf = encoder.get_ref().clone();
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encoder.get_mut().clear();
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Poll::Ready(Some(Ok(Bytes::from(buf))))
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}
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}
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||||
}
|
||||
|
||||
fn poll_trailers(
|
||||
self: Pin<&mut Self>,
|
||||
cx: &mut Context<'_>,
|
||||
) -> Poll<Result<Option<hyper::HeaderMap>, Self::Error>> {
|
||||
let inner = unsafe {
|
||||
let this = self.get_unchecked_mut();
|
||||
Pin::new_unchecked(&mut this.inner)
|
||||
};
|
||||
|
||||
inner.poll_trailers(cx)
|
||||
}
|
||||
}
|
||||
|
||||
pub struct DeflateBody<B> {
|
||||
inner: B,
|
||||
encoder: Option<DeflateEncoder<Vec<u8>>>,
|
||||
}
|
||||
impl<B> DeflateBody<B> {
|
||||
pub fn new(inner: B, compression: Compression) -> Self {
|
||||
Self {
|
||||
inner,
|
||||
encoder: Some(DeflateEncoder::new(Vec::new(), compression)),
|
||||
}
|
||||
}
|
||||
}
|
||||
impl<B> HttpBody for DeflateBody<B>
|
||||
where
|
||||
B: HttpBody,
|
||||
{
|
||||
type Data = Bytes;
|
||||
|
||||
type Error = B::Error;
|
||||
|
||||
fn poll_data(
|
||||
self: Pin<&mut Self>,
|
||||
cx: &mut Context<'_>,
|
||||
) -> Poll<Option<Result<Self::Data, Self::Error>>> {
|
||||
let (inner, encoder) = unsafe {
|
||||
let this = self.get_unchecked_mut();
|
||||
(Pin::new_unchecked(&mut this.inner), &mut this.encoder)
|
||||
};
|
||||
|
||||
if encoder.is_none() {
|
||||
return Poll::Ready(None);
|
||||
}
|
||||
|
||||
let data = match inner.poll_data(cx) {
|
||||
Poll::Ready(Some(Ok(d))) => Some(d),
|
||||
Poll::Ready(None) => None,
|
||||
Poll::Ready(Some(Err(e))) => return Poll::Ready(Some(Err(e))),
|
||||
Poll::Pending => return Poll::Pending,
|
||||
};
|
||||
|
||||
match data {
|
||||
None => {
|
||||
let encoder = unsafe { encoder.take().unwrap_unchecked() };
|
||||
let buf = encoder.finish().unwrap();
|
||||
|
||||
Poll::Ready(Some(Ok(Bytes::from(buf))))
|
||||
}
|
||||
Some(d) => {
|
||||
let mut encoder =
|
||||
unsafe { encoder.as_mut().unwrap_unchecked() };
|
||||
let mut reader = d.reader();
|
||||
let _ = std::io::copy(&mut reader, &mut encoder);
|
||||
let buf = encoder.get_ref().clone();
|
||||
encoder.get_mut().clear();
|
||||
|
||||
Poll::Ready(Some(Ok(Bytes::from(buf))))
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
fn poll_trailers(
|
||||
self: Pin<&mut Self>,
|
||||
cx: &mut Context<'_>,
|
||||
) -> Poll<Result<Option<hyper::HeaderMap>, Self::Error>> {
|
||||
let inner = unsafe {
|
||||
let this = self.get_unchecked_mut();
|
||||
Pin::new_unchecked(&mut this.inner)
|
||||
};
|
||||
|
||||
inner.poll_trailers(cx)
|
||||
}
|
||||
}
|
||||
|
||||
fn replace_body<B, B_>(
|
||||
r: Response<B>,
|
||||
replace: impl FnOnce(B) -> B_,
|
||||
) -> Response<B_> {
|
||||
let (parts, body) = r.into_parts();
|
||||
|
||||
Response::from_parts(parts, replace(body))
|
||||
}
|
||||
|
||||
pub fn choose_body<B, CTPF>(
|
||||
res: Response<B>,
|
||||
chosen_algorithm: &Option<Algorithm>,
|
||||
predicate: CompressPredicate<CTPF>,
|
||||
) -> Response<CompressBody<B>>
|
||||
where
|
||||
CTPF: FnOnce(&str) -> bool,
|
||||
B: HttpBody,
|
||||
{
|
||||
let chosen_algorithm = match chosen_algorithm {
|
||||
None => return replace_body(res, CompressBody::None),
|
||||
Some(a) => a,
|
||||
};
|
||||
|
||||
let headers = res.headers();
|
||||
let content_length = match headers
|
||||
.get("transfer-encoding")
|
||||
.and_then(|v| v.to_str().ok())
|
||||
{
|
||||
None => Some(
|
||||
headers
|
||||
.get("content-length")
|
||||
.and_then(|v| v.to_str().ok())
|
||||
.and_then(|s| s.parse::<usize>().ok())
|
||||
.unwrap_or_else(|| res.body().size_hint().lower() as usize),
|
||||
),
|
||||
Some("chunked") => None,
|
||||
_ => return replace_body(res, CompressBody::None),
|
||||
};
|
||||
match content_length {
|
||||
Some(l) if l < predicate.min_size => {
|
||||
return replace_body(res, CompressBody::None)
|
||||
}
|
||||
_ => (),
|
||||
}
|
||||
|
||||
let content_type =
|
||||
match headers.get("content-type").and_then(|v| v.to_str().ok()) {
|
||||
Some(ct) => ct,
|
||||
None => return replace_body(res, CompressBody::None),
|
||||
};
|
||||
|
||||
if !(predicate.content_type_predicate)(content_type) {
|
||||
return replace_body(res, CompressBody::None);
|
||||
}
|
||||
|
||||
match chosen_algorithm {
|
||||
Algorithm::Brotli(p) => {
|
||||
let mut res = replace_body(res, |b| {
|
||||
CompressBody::Brotli(BrotliBody::new(b, p))
|
||||
});
|
||||
|
||||
res.headers_mut()
|
||||
.insert("content-encoding", HeaderValue::from_static("br"));
|
||||
|
||||
res
|
||||
}
|
||||
Algorithm::Gzip(c) => {
|
||||
let mut res =
|
||||
replace_body(res, |b| CompressBody::Gzip(GzipBody::new(b, *c)));
|
||||
|
||||
res.headers_mut()
|
||||
.insert("content-encoding", HeaderValue::from_static("gzip"));
|
||||
|
||||
res
|
||||
}
|
||||
Algorithm::Deflate(c) => {
|
||||
let mut res = replace_body(res, |b| {
|
||||
CompressBody::Deflate(DeflateBody::new(b, *c))
|
||||
});
|
||||
|
||||
res.headers_mut().insert(
|
||||
"content-encoding",
|
||||
HeaderValue::from_static("deflate"),
|
||||
);
|
||||
|
||||
res
|
||||
}
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue