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server/rest: compress static files

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compress them on the fly
and refactor the size limit for chunking files

Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>
This commit is contained in:
Dominik Csapak 2021-04-06 11:03:45 +02:00 committed by Thomas Lamprecht
parent 2f29f1c765
commit 59477ad252
1 changed files with 61 additions and 23 deletions
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78
src/server/rest.rs
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@ -40,6 +40,7 @@ use crate::auth_helpers::*;
use crate::config::cached_user_info::CachedUserInfo;
use crate::tools;
use crate::tools::compression::{CompressionMethod, DeflateEncoder, Level};
use crate::tools::AsyncReaderStream;
use crate::tools::FileLogger;
extern "C" {
@ -51,6 +52,7 @@ pub struct RestServer {
}
const MAX_URI_QUERY_LENGTH: usize = 3072;
const CHUNK_SIZE_LIMIT: u64 = 32 * 1024;
impl RestServer {
pub fn new(api_config: ApiConfig) -> Self {
@ -544,9 +546,11 @@ fn extension_to_content_type(filename: &Path) -> (&'static str, bool) {
("application/octet-stream", false)
}
async fn simple_static_file_download(filename: PathBuf) -> Result<Response<Body>, Error> {
let (content_type, _nocomp) = extension_to_content_type(&filename);
async fn simple_static_file_download(
filename: PathBuf,
content_type: &'static str,
compression: Option<CompressionMethod>,
) -> Result<Response<Body>, Error> {
use tokio::io::AsyncReadExt;
let mut file = File::open(filename)
@ -554,46 +558,79 @@ async fn simple_static_file_download(filename: PathBuf) -> Result<Response<Body>
.map_err(|err| http_err!(BAD_REQUEST, "File open failed: {}", err))?;
let mut data: Vec<u8> = Vec::new();
let mut response = match compression {
Some(CompressionMethod::Deflate) => {
let mut enc = DeflateEncoder::with_quality(data, Level::Fastest);
enc.compress_vec(&mut file, CHUNK_SIZE_LIMIT as usize).await?;
let mut response = Response::new(enc.into_inner().into());
response.headers_mut().insert(
header::CONTENT_ENCODING,
CompressionMethod::Deflate.content_encoding(),
);
response
}
None => {
file.read_to_end(&mut data)
.await
.map_err(|err| http_err!(BAD_REQUEST, "File read failed: {}", err))?;
Response::new(data.into())
}
};
let mut response = Response::new(data.into());
response.headers_mut().insert(
header::CONTENT_TYPE,
header::HeaderValue::from_static(content_type),
);
Ok(response)
}
async fn chuncked_static_file_download(filename: PathBuf) -> Result<Response<Body>, Error> {
let (content_type, _nocomp) = extension_to_content_type(&filename);
async fn chuncked_static_file_download(
filename: PathBuf,
content_type: &'static str,
compression: Option<CompressionMethod>,
) -> Result<Response<Body>, Error> {
let mut resp = Response::builder()
.status(StatusCode::OK)
.header(header::CONTENT_TYPE, content_type);
let file = File::open(filename)
.await
.map_err(|err| http_err!(BAD_REQUEST, "File open failed: {}", err))?;
let payload = tokio_util::codec::FramedRead::new(file, tokio_util::codec::BytesCodec::new())
.map_ok(|bytes| bytes.freeze());
let body = Body::wrap_stream(payload);
let body = match compression {
Some(CompressionMethod::Deflate) => {
resp = resp.header(
header::CONTENT_ENCODING,
CompressionMethod::Deflate.content_encoding(),
);
Body::wrap_stream(DeflateEncoder::with_quality(
AsyncReaderStream::new(file),
Level::Fastest,
))
}
None => Body::wrap_stream(AsyncReaderStream::new(file)),
};
// FIXME: set other headers ?
Ok(Response::builder()
.status(StatusCode::OK)
.header(header::CONTENT_TYPE, content_type)
.body(body)
.unwrap())
Ok(resp.body(body).unwrap())
}
async fn handle_static_file_download(filename: PathBuf) -> Result<Response<Body>, Error> {
async fn handle_static_file_download(
filename: PathBuf,
compression: Option<CompressionMethod>,
) -> Result<Response<Body>, Error> {
let metadata = tokio::fs::metadata(filename.clone())
.map_err(|err| http_err!(BAD_REQUEST, "File access problems: {}", err))
.await?;
if metadata.len() < 1024 * 32 {
simple_static_file_download(filename).await
let (content_type, nocomp) = extension_to_content_type(&filename);
let compression = if nocomp { None } else { compression };
if metadata.len() < CHUNK_SIZE_LIMIT {
simple_static_file_download(filename, content_type, compression).await
} else {
chuncked_static_file_download(filename).await
chuncked_static_file_download(filename, content_type, compression).await
}
}
@ -764,7 +801,8 @@ async fn handle_request(
}
} else {
let filename = api.find_alias(&components);
return handle_static_file_download(filename).await;
let compression = extract_compression_method(&parts.headers);
return handle_static_file_download(filename, compression).await;
}
}