2020-04-07 22:39:07 +00:00
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use std::collections::VecDeque;
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2020-04-19 17:59:59 +00:00
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use std::net::SocketAddr;
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2020-04-10 20:01:48 +00:00
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use std::sync::Arc;
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2020-04-24 17:46:52 +00:00
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use std::time::{Duration, UNIX_EPOCH};
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2020-04-06 17:55:39 +00:00
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2020-04-10 20:01:48 +00:00
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use futures::future::Future;
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2020-04-09 21:45:07 +00:00
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use futures::stream::*;
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2020-04-10 20:01:48 +00:00
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use hyper::body::{Bytes, HttpBody};
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2020-04-07 22:39:07 +00:00
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use hyper::server::conn::AddrStream;
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2020-04-10 20:01:48 +00:00
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use hyper::service::{make_service_fn, service_fn};
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2020-04-05 21:33:42 +00:00
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use hyper::{Body, Method, Request, Response, Server, StatusCode};
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2020-04-24 10:10:01 +00:00
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use garage_util::data::*;
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use garage_util::error::Error;
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2020-04-23 17:05:46 +00:00
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2020-04-24 10:10:01 +00:00
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use garage_table::EmptyKey;
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2020-04-18 17:39:08 +00:00
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2020-04-24 10:10:01 +00:00
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use garage_core::block::INLINE_THRESHOLD;
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use garage_core::block_ref_table::*;
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use garage_core::garage::Garage;
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use garage_core::object_table::*;
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use garage_core::version_table::*;
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2020-04-23 17:05:46 +00:00
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2020-04-24 10:10:01 +00:00
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use crate::http_util::*;
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2020-04-24 17:46:52 +00:00
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use crate::signature::check_signature;
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2020-04-05 21:33:42 +00:00
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2020-04-10 20:01:48 +00:00
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type BodyType = Box<dyn HttpBody<Data = Bytes, Error = Error> + Send + Unpin>;
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pub async fn run_api_server(
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garage: Arc<Garage>,
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shutdown_signal: impl Future<Output = ()>,
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2020-04-11 16:51:11 +00:00
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) -> Result<(), Error> {
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2020-04-24 17:46:52 +00:00
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let addr = &garage.config.s3_api.api_bind_addr;
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2020-04-05 21:33:42 +00:00
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2020-04-10 20:01:48 +00:00
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let service = make_service_fn(|conn: &AddrStream| {
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2020-04-08 20:00:41 +00:00
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let garage = garage.clone();
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2020-04-07 22:39:07 +00:00
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let client_addr = conn.remote_addr();
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2020-04-06 17:55:39 +00:00
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async move {
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Ok::<_, Error>(service_fn(move |req: Request<Body>| {
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2020-04-08 20:00:41 +00:00
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let garage = garage.clone();
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handler(garage, req, client_addr)
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2020-04-06 17:55:39 +00:00
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}))
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}
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});
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2020-04-05 21:33:42 +00:00
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2020-04-10 20:01:48 +00:00
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let server = Server::bind(&addr).serve(service);
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2020-04-05 21:33:42 +00:00
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let graceful = server.with_graceful_shutdown(shutdown_signal);
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2020-04-21 12:54:55 +00:00
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info!("API server listening on http://{}", addr);
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2020-04-05 21:33:42 +00:00
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2020-04-11 16:51:11 +00:00
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graceful.await?;
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Ok(())
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2020-04-05 21:33:42 +00:00
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}
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2020-04-07 22:39:07 +00:00
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2020-04-10 20:01:48 +00:00
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async fn handler(
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garage: Arc<Garage>,
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req: Request<Body>,
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addr: SocketAddr,
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) -> Result<Response<BodyType>, Error> {
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2020-04-24 17:46:52 +00:00
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info!("{} {} {}", addr, req.method(), req.uri());
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debug!("{:?}", req);
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match handler_inner(garage, req).await {
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Ok(x) => {
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debug!("{} {:?}", x.status(), x.headers());
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Ok(x)
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}
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2020-04-07 22:39:07 +00:00
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Err(e) => {
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2020-04-10 20:01:48 +00:00
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let body: BodyType = Box::new(BytesBody::from(format!("{}\n", e)));
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let mut http_error = Response::new(body);
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2020-04-09 15:32:28 +00:00
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*http_error.status_mut() = e.http_status_code();
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2020-04-24 17:46:52 +00:00
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warn!("Response: error {}, {}", e.http_status_code(), e);
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2020-04-09 15:32:28 +00:00
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Ok(http_error)
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2020-04-07 22:39:07 +00:00
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}
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}
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}
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2020-04-10 20:01:48 +00:00
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async fn handler_inner(
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garage: Arc<Garage>,
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req: Request<Body>,
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) -> Result<Response<BodyType>, Error> {
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2020-04-24 17:46:52 +00:00
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let path = req.uri().path().to_string();
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let path = path.trim_start_matches('/');
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let (bucket, key) = match path.find('/') {
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Some(i) => {
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let (bucket, key) = path.split_at(i);
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(bucket, Some(key))
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2020-04-07 22:39:07 +00:00
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}
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2020-04-24 17:46:52 +00:00
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None => (path, None),
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};
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if bucket.len() == 0 {
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return Err(Error::Forbidden(format!(
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"Operations on buckets not allowed"
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)));
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}
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let api_key = check_signature(&garage, &req).await?;
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let allowed = match req.method() {
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&Method::HEAD | &Method::GET => api_key.allow_read(&bucket),
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_ => api_key.allow_write(&bucket),
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};
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if !allowed {
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return Err(Error::Forbidden(format!(
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"Operation is not allowed for this key."
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)));
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}
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if let Some(key) = key {
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match req.method() {
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&Method::HEAD => Ok(handle_head(garage, &bucket, &key).await?),
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&Method::GET => Ok(handle_get(garage, &bucket, &key).await?),
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&Method::PUT => {
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let mime_type = req
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.headers()
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.get(hyper::header::CONTENT_TYPE)
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.map(|x| x.to_str())
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.unwrap_or(Ok("blob"))?
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.to_string();
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let version_uuid =
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handle_put(garage, &mime_type, &bucket, &key, req.into_body()).await?;
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let response = format!("{}\n", hex::encode(version_uuid,));
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Ok(Response::new(Box::new(BytesBody::from(response))))
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}
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&Method::DELETE => {
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let version_uuid = handle_delete(garage, &bucket, &key).await?;
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let response = format!("{}\n", hex::encode(version_uuid,));
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Ok(Response::new(Box::new(BytesBody::from(response))))
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}
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_ => Err(Error::BadRequest(format!("Invalid method"))),
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2020-04-11 16:51:11 +00:00
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}
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2020-04-24 17:46:52 +00:00
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} else {
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// TODO: listing buckets
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Err(Error::Forbidden("Unimplemented".into()))
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2020-04-10 20:01:48 +00:00
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}
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2020-04-07 22:39:07 +00:00
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}
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2020-04-10 20:01:48 +00:00
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async fn handle_put(
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garage: Arc<Garage>,
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mime_type: &str,
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bucket: &str,
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key: &str,
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body: Body,
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) -> Result<UUID, Error> {
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2020-04-07 22:39:07 +00:00
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let version_uuid = gen_uuid();
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2020-04-23 17:05:46 +00:00
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let mut chunker = BodyChunker::new(body, garage.config.block_size);
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2020-04-07 22:39:07 +00:00
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let first_block = match chunker.next().await? {
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Some(x) => x,
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None => return Err(Error::BadRequest(format!("Empty body"))),
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};
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2020-04-23 18:16:33 +00:00
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let mut object_version = ObjectVersion {
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2020-04-21 17:08:42 +00:00
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uuid: version_uuid,
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2020-04-09 15:32:28 +00:00
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timestamp: now_msec(),
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2020-04-07 22:39:07 +00:00
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mime_type: mime_type.to_string(),
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size: first_block.len() as u64,
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is_complete: false,
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2020-04-09 21:45:07 +00:00
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data: ObjectVersionData::DeleteMarker,
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2020-04-23 18:16:33 +00:00
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};
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2020-04-07 22:39:07 +00:00
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if first_block.len() < INLINE_THRESHOLD {
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2020-04-23 18:16:33 +00:00
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object_version.data = ObjectVersionData::Inline(first_block);
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object_version.is_complete = true;
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let object = Object::new(bucket.into(), key.into(), vec![object_version]);
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2020-04-09 15:32:28 +00:00
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garage.object_table.insert(&object).await?;
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2020-04-10 20:01:48 +00:00
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return Ok(version_uuid);
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2020-04-07 22:39:07 +00:00
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}
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2020-04-23 18:16:33 +00:00
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let version = Version::new(version_uuid, bucket.into(), key.into(), false, vec![]);
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2020-04-09 21:45:07 +00:00
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2020-04-07 22:39:07 +00:00
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let first_block_hash = hash(&first_block[..]);
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2020-04-23 18:16:33 +00:00
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object_version.data = ObjectVersionData::FirstBlock(first_block_hash);
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let object = Object::new(bucket.into(), key.into(), vec![object_version.clone()]);
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2020-04-09 15:32:28 +00:00
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garage.object_table.insert(&object).await?;
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2020-04-07 22:39:07 +00:00
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let mut next_offset = first_block.len();
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2020-04-21 17:08:42 +00:00
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let mut put_curr_version_block = put_block_meta(garage.clone(), &version, 0, first_block_hash);
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2020-04-18 17:21:34 +00:00
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let mut put_curr_block = garage
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.block_manager
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.rpc_put_block(first_block_hash, first_block);
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2020-04-09 21:45:07 +00:00
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2020-04-07 22:39:07 +00:00
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loop {
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2020-04-10 20:01:48 +00:00
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let (_, _, next_block) =
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futures::try_join!(put_curr_block, put_curr_version_block, chunker.next())?;
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2020-04-07 22:39:07 +00:00
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if let Some(block) = next_block {
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2020-04-09 21:45:07 +00:00
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let block_hash = hash(&block[..]);
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let block_len = block.len();
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2020-04-21 17:08:42 +00:00
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put_curr_version_block =
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put_block_meta(garage.clone(), &version, next_offset as u64, block_hash);
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2020-04-18 17:21:34 +00:00
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put_curr_block = garage.block_manager.rpc_put_block(block_hash, block);
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2020-04-09 21:45:07 +00:00
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next_offset += block_len;
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2020-04-07 22:39:07 +00:00
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} else {
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break;
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}
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}
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// TODO: if at any step we have an error, we should undo everything we did
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2020-04-23 18:16:33 +00:00
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object_version.is_complete = true;
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object_version.size = next_offset as u64;
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let object = Object::new(bucket.into(), key.into(), vec![object_version]);
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2020-04-09 15:32:28 +00:00
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garage.object_table.insert(&object).await?;
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2020-04-23 18:16:33 +00:00
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2020-04-07 22:39:07 +00:00
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Ok(version_uuid)
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}
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2020-04-10 21:11:52 +00:00
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async fn put_block_meta(
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2020-04-10 20:01:48 +00:00
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garage: Arc<Garage>,
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version: &Version,
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offset: u64,
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hash: Hash,
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) -> Result<(), Error> {
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2020-04-23 18:16:33 +00:00
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// TODO: don't clone, restart from empty block list ??
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2020-04-09 21:45:07 +00:00
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let mut version = version.clone();
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2020-04-23 18:16:33 +00:00
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version.add_block(VersionBlock { offset, hash }).unwrap();
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2020-04-10 21:11:52 +00:00
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let block_ref = BlockRef {
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block: hash,
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2020-04-21 17:08:42 +00:00
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version: version.uuid,
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2020-04-10 21:11:52 +00:00
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deleted: false,
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};
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futures::try_join!(
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garage.version_table.insert(&version),
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garage.block_ref_table.insert(&block_ref),
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)?;
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2020-04-09 21:45:07 +00:00
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Ok(())
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}
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2020-04-07 22:39:07 +00:00
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struct BodyChunker {
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body: Body,
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2020-04-09 21:45:07 +00:00
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read_all: bool,
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2020-04-07 22:39:07 +00:00
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block_size: usize,
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buf: VecDeque<u8>,
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}
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impl BodyChunker {
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fn new(body: Body, block_size: usize) -> Self {
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2020-04-10 20:01:48 +00:00
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Self {
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2020-04-07 22:39:07 +00:00
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body,
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2020-04-09 21:45:07 +00:00
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read_all: false,
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2020-04-07 22:39:07 +00:00
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block_size,
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buf: VecDeque::new(),
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}
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}
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async fn next(&mut self) -> Result<Option<Vec<u8>>, Error> {
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2020-04-09 21:45:07 +00:00
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while !self.read_all && self.buf.len() < self.block_size {
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2020-04-07 22:39:07 +00:00
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if let Some(block) = self.body.next().await {
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let bytes = block?;
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2020-04-21 12:54:55 +00:00
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trace!("Body next: {} bytes", bytes.len());
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2020-04-07 22:39:07 +00:00
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self.buf.extend(&bytes[..]);
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} else {
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2020-04-09 21:45:07 +00:00
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self.read_all = true;
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2020-04-07 22:39:07 +00:00
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}
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}
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if self.buf.len() == 0 {
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Ok(None)
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} else if self.buf.len() <= self.block_size {
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2020-04-10 20:01:48 +00:00
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let block = self.buf.drain(..).collect::<Vec<u8>>();
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2020-04-07 22:39:07 +00:00
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Ok(Some(block))
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} else {
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2020-04-10 20:01:48 +00:00
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let block = self.buf.drain(..self.block_size).collect::<Vec<u8>>();
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2020-04-07 22:39:07 +00:00
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Ok(Some(block))
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}
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}
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}
|
2020-04-09 15:32:28 +00:00
|
|
|
|
2020-04-11 16:51:11 +00:00
|
|
|
async fn handle_delete(garage: Arc<Garage>, bucket: &str, key: &str) -> Result<UUID, Error> {
|
2020-04-21 14:33:12 +00:00
|
|
|
let exists = match garage
|
|
|
|
|
.object_table
|
|
|
|
|
.get(&bucket.to_string(), &key.to_string())
|
|
|
|
|
.await?
|
|
|
|
|
{
|
|
|
|
|
None => false,
|
|
|
|
|
Some(o) => {
|
|
|
|
|
let mut has_active_version = false;
|
2020-04-23 18:16:33 +00:00
|
|
|
for v in o.versions().iter() {
|
2020-04-21 14:33:12 +00:00
|
|
|
if v.data != ObjectVersionData::DeleteMarker {
|
|
|
|
|
has_active_version = true;
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
has_active_version
|
|
|
|
|
}
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
if !exists {
|
|
|
|
|
// No need to delete
|
|
|
|
|
return Ok([0u8; 32].into());
|
|
|
|
|
}
|
|
|
|
|
|
2020-04-11 16:51:11 +00:00
|
|
|
let version_uuid = gen_uuid();
|
|
|
|
|
|
2020-04-23 18:16:33 +00:00
|
|
|
let object = Object::new(
|
|
|
|
|
bucket.into(),
|
|
|
|
|
key.into(),
|
|
|
|
|
vec![ObjectVersion {
|
|
|
|
|
uuid: version_uuid,
|
|
|
|
|
timestamp: now_msec(),
|
|
|
|
|
mime_type: "application/x-delete-marker".into(),
|
|
|
|
|
size: 0,
|
|
|
|
|
is_complete: true,
|
|
|
|
|
data: ObjectVersionData::DeleteMarker,
|
|
|
|
|
}],
|
|
|
|
|
);
|
2020-04-11 16:51:11 +00:00
|
|
|
|
|
|
|
|
garage.object_table.insert(&object).await?;
|
|
|
|
|
return Ok(version_uuid);
|
|
|
|
|
}
|
|
|
|
|
|
2020-04-24 17:46:52 +00:00
|
|
|
fn object_headers(version: &ObjectVersion) -> http::response::Builder {
|
|
|
|
|
let date = UNIX_EPOCH + Duration::from_millis(version.timestamp);
|
|
|
|
|
let date_str = httpdate::fmt_http_date(date);
|
|
|
|
|
|
|
|
|
|
Response::builder()
|
|
|
|
|
.header("Content-Type", version.mime_type.to_string())
|
|
|
|
|
.header("Content-Length", format!("{}", version.size))
|
|
|
|
|
.header("Last-Modified", date_str)
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
async fn handle_head(
|
|
|
|
|
garage: Arc<Garage>,
|
|
|
|
|
bucket: &str,
|
|
|
|
|
key: &str,
|
|
|
|
|
) -> Result<Response<BodyType>, Error> {
|
|
|
|
|
let object = match garage
|
|
|
|
|
.object_table
|
|
|
|
|
.get(&bucket.to_string(), &key.to_string())
|
|
|
|
|
.await?
|
|
|
|
|
{
|
|
|
|
|
None => return Err(Error::NotFound),
|
|
|
|
|
Some(o) => o,
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
let version = match object
|
|
|
|
|
.versions()
|
|
|
|
|
.iter()
|
|
|
|
|
.rev()
|
|
|
|
|
.filter(|v| v.is_complete && v.data != ObjectVersionData::DeleteMarker)
|
|
|
|
|
.next()
|
|
|
|
|
{
|
|
|
|
|
Some(v) => v,
|
|
|
|
|
None => return Err(Error::NotFound),
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
let body: BodyType = Box::new(BytesBody::from(vec![]));
|
|
|
|
|
let response = object_headers(&version)
|
|
|
|
|
.status(StatusCode::OK)
|
|
|
|
|
.body(body)
|
|
|
|
|
.unwrap();
|
|
|
|
|
Ok(response)
|
|
|
|
|
}
|
|
|
|
|
|
2020-04-10 20:01:48 +00:00
|
|
|
async fn handle_get(
|
|
|
|
|
garage: Arc<Garage>,
|
|
|
|
|
bucket: &str,
|
|
|
|
|
key: &str,
|
|
|
|
|
) -> Result<Response<BodyType>, Error> {
|
2020-04-23 18:16:33 +00:00
|
|
|
let object = match garage
|
2020-04-10 20:01:48 +00:00
|
|
|
.object_table
|
|
|
|
|
.get(&bucket.to_string(), &key.to_string())
|
|
|
|
|
.await?
|
|
|
|
|
{
|
2020-04-09 15:32:28 +00:00
|
|
|
None => return Err(Error::NotFound),
|
2020-04-10 20:01:48 +00:00
|
|
|
Some(o) => o,
|
2020-04-09 15:32:28 +00:00
|
|
|
};
|
|
|
|
|
|
2020-04-10 20:01:48 +00:00
|
|
|
let last_v = match object
|
2020-04-23 18:16:33 +00:00
|
|
|
.versions()
|
|
|
|
|
.iter()
|
2020-04-10 20:01:48 +00:00
|
|
|
.rev()
|
|
|
|
|
.filter(|v| v.is_complete)
|
|
|
|
|
.next()
|
|
|
|
|
{
|
2020-04-09 15:32:28 +00:00
|
|
|
Some(v) => v,
|
|
|
|
|
None => return Err(Error::NotFound),
|
|
|
|
|
};
|
|
|
|
|
|
2020-04-24 17:46:52 +00:00
|
|
|
let resp_builder = object_headers(&last_v).status(StatusCode::OK);
|
2020-04-09 15:32:28 +00:00
|
|
|
|
2020-04-23 18:16:33 +00:00
|
|
|
match &last_v.data {
|
2020-04-09 21:45:07 +00:00
|
|
|
ObjectVersionData::DeleteMarker => Err(Error::NotFound),
|
|
|
|
|
ObjectVersionData::Inline(bytes) => {
|
2020-04-23 18:16:33 +00:00
|
|
|
let body: BodyType = Box::new(BytesBody::from(bytes.to_vec()));
|
2020-04-10 20:01:48 +00:00
|
|
|
Ok(resp_builder.body(body)?)
|
2020-04-09 15:32:28 +00:00
|
|
|
}
|
2020-04-09 21:45:07 +00:00
|
|
|
ObjectVersionData::FirstBlock(first_block_hash) => {
|
2020-04-18 17:21:34 +00:00
|
|
|
let read_first_block = garage.block_manager.rpc_get_block(&first_block_hash);
|
2020-04-19 15:15:48 +00:00
|
|
|
let get_next_blocks = garage.version_table.get(&last_v.uuid, &EmptyKey);
|
2020-04-09 21:45:07 +00:00
|
|
|
|
|
|
|
|
let (first_block, version) = futures::try_join!(read_first_block, get_next_blocks)?;
|
|
|
|
|
let version = match version {
|
|
|
|
|
Some(v) => v,
|
|
|
|
|
None => return Err(Error::NotFound),
|
|
|
|
|
};
|
|
|
|
|
|
2020-04-10 20:01:48 +00:00
|
|
|
let mut blocks = version
|
2020-04-23 18:16:33 +00:00
|
|
|
.blocks()
|
2020-04-10 20:01:48 +00:00
|
|
|
.iter()
|
2020-04-21 17:08:42 +00:00
|
|
|
.map(|vb| (vb.hash, None))
|
2020-04-09 21:45:07 +00:00
|
|
|
.collect::<Vec<_>>();
|
|
|
|
|
blocks[0].1 = Some(first_block);
|
|
|
|
|
|
2020-04-10 20:01:48 +00:00
|
|
|
let body_stream = futures::stream::iter(blocks)
|
|
|
|
|
.map(move |(hash, data_opt)| {
|
|
|
|
|
let garage = garage.clone();
|
|
|
|
|
async move {
|
2020-04-09 21:45:07 +00:00
|
|
|
if let Some(data) = data_opt {
|
2020-04-10 20:01:48 +00:00
|
|
|
Ok(Bytes::from(data))
|
2020-04-09 21:45:07 +00:00
|
|
|
} else {
|
2020-04-18 17:21:34 +00:00
|
|
|
garage
|
|
|
|
|
.block_manager
|
|
|
|
|
.rpc_get_block(&hash)
|
|
|
|
|
.await
|
|
|
|
|
.map(Bytes::from)
|
2020-04-09 21:45:07 +00:00
|
|
|
}
|
2020-04-10 20:01:48 +00:00
|
|
|
}
|
|
|
|
|
})
|
|
|
|
|
.buffered(2);
|
2020-04-10 21:11:52 +00:00
|
|
|
let body: BodyType = Box::new(StreamBody::new(Box::pin(body_stream)));
|
2020-04-09 21:45:07 +00:00
|
|
|
Ok(resp_builder.body(body)?)
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
