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authorAlex Auvolat <alex@adnab.me>2020-04-24 18:47:11 +0000
committerAlex Auvolat <alex@adnab.me>2020-04-24 18:47:11 +0000
commit91b2d1fcc11c181b1b69db9157188ec39768b5ba (patch)
treee35f7d9309a6ad2b9e7072cdd11b9a9d87e3e932 /src/api/api_server.rs
parentf2e05986c4d8cdf4abfde92e51e36f456e276ccd (diff)
downloadgarage-91b2d1fcc11c181b1b69db9157188ec39768b5ba.tar.gz
garage-91b2d1fcc11c181b1b69db9157188ec39768b5ba.zip
Some basic S3 functionnality
Diffstat (limited to 'src/api/api_server.rs')
-rw-r--r--src/api/api_server.rs342
1 files changed, 40 insertions, 302 deletions
diff --git a/src/api/api_server.rs b/src/api/api_server.rs
index 97cc6b93..f7ca156d 100644
--- a/src/api/api_server.rs
+++ b/src/api/api_server.rs
@@ -1,30 +1,25 @@
-use std::collections::VecDeque;
+use std::collections::HashMap;
use std::net::SocketAddr;
use std::sync::Arc;
-use std::time::{Duration, UNIX_EPOCH};
use futures::future::Future;
-use futures::stream::*;
use hyper::body::{Bytes, HttpBody};
use hyper::server::conn::AddrStream;
use hyper::service::{make_service_fn, service_fn};
-use hyper::{Body, Method, Request, Response, Server, StatusCode};
+use hyper::{Body, Method, Request, Response, Server};
-use garage_util::data::*;
use garage_util::error::Error;
-use garage_table::EmptyKey;
-
-use garage_core::block::INLINE_THRESHOLD;
-use garage_core::block_ref_table::*;
use garage_core::garage::Garage;
-use garage_core::object_table::*;
-use garage_core::version_table::*;
use crate::http_util::*;
use crate::signature::check_signature;
-type BodyType = Box<dyn HttpBody<Data = Bytes, Error = Error> + Send + Unpin>;
+use crate::s3_get::{handle_get, handle_head};
+use crate::s3_list::handle_list;
+use crate::s3_put::{handle_delete, handle_put};
+
+pub type BodyType = Box<dyn HttpBody<Data = Bytes, Error = Error> + Send + Unpin>;
pub async fn run_api_server(
garage: Arc<Garage>,
@@ -128,298 +123,41 @@ async fn handler_inner(
_ => Err(Error::BadRequest(format!("Invalid method"))),
}
} else {
- // TODO: listing buckets
- Err(Error::Forbidden("Unimplemented".into()))
- }
-}
-
-async fn handle_put(
- garage: Arc<Garage>,
- mime_type: &str,
- bucket: &str,
- key: &str,
- body: Body,
-) -> Result<UUID, Error> {
- let version_uuid = gen_uuid();
-
- let mut chunker = BodyChunker::new(body, garage.config.block_size);
- let first_block = match chunker.next().await? {
- Some(x) => x,
- None => return Err(Error::BadRequest(format!("Empty body"))),
- };
-
- let mut object_version = ObjectVersion {
- uuid: version_uuid,
- timestamp: now_msec(),
- mime_type: mime_type.to_string(),
- size: first_block.len() as u64,
- is_complete: false,
- data: ObjectVersionData::DeleteMarker,
- };
-
- if first_block.len() < INLINE_THRESHOLD {
- object_version.data = ObjectVersionData::Inline(first_block);
- object_version.is_complete = true;
-
- let object = Object::new(bucket.into(), key.into(), vec![object_version]);
- garage.object_table.insert(&object).await?;
- return Ok(version_uuid);
- }
-
- let version = Version::new(version_uuid, bucket.into(), key.into(), false, vec![]);
-
- let first_block_hash = hash(&first_block[..]);
- object_version.data = ObjectVersionData::FirstBlock(first_block_hash);
- let object = Object::new(bucket.into(), key.into(), vec![object_version.clone()]);
- garage.object_table.insert(&object).await?;
-
- let mut next_offset = first_block.len();
- let mut put_curr_version_block = put_block_meta(garage.clone(), &version, 0, first_block_hash);
- let mut put_curr_block = garage
- .block_manager
- .rpc_put_block(first_block_hash, first_block);
-
- loop {
- let (_, _, next_block) =
- futures::try_join!(put_curr_block, put_curr_version_block, chunker.next())?;
- if let Some(block) = next_block {
- let block_hash = hash(&block[..]);
- let block_len = block.len();
- put_curr_version_block =
- put_block_meta(garage.clone(), &version, next_offset as u64, block_hash);
- put_curr_block = garage.block_manager.rpc_put_block(block_hash, block);
- next_offset += block_len;
- } else {
- break;
- }
- }
-
- // TODO: if at any step we have an error, we should undo everything we did
-
- object_version.is_complete = true;
- object_version.size = next_offset as u64;
-
- let object = Object::new(bucket.into(), key.into(), vec![object_version]);
- garage.object_table.insert(&object).await?;
-
- Ok(version_uuid)
-}
-
-async fn put_block_meta(
- garage: Arc<Garage>,
- version: &Version,
- offset: u64,
- hash: Hash,
-) -> Result<(), Error> {
- // TODO: don't clone, restart from empty block list ??
- let mut version = version.clone();
- version.add_block(VersionBlock { offset, hash }).unwrap();
-
- let block_ref = BlockRef {
- block: hash,
- version: version.uuid,
- deleted: false,
- };
-
- futures::try_join!(
- garage.version_table.insert(&version),
- garage.block_ref_table.insert(&block_ref),
- )?;
- Ok(())
-}
-
-struct BodyChunker {
- body: Body,
- read_all: bool,
- block_size: usize,
- buf: VecDeque<u8>,
-}
-
-impl BodyChunker {
- fn new(body: Body, block_size: usize) -> Self {
- Self {
- body,
- read_all: false,
- block_size,
- buf: VecDeque::new(),
- }
- }
- async fn next(&mut self) -> Result<Option<Vec<u8>>, Error> {
- while !self.read_all && self.buf.len() < self.block_size {
- if let Some(block) = self.body.next().await {
- let bytes = block?;
- trace!("Body next: {} bytes", bytes.len());
- self.buf.extend(&bytes[..]);
- } else {
- self.read_all = true;
- }
- }
- if self.buf.len() == 0 {
- Ok(None)
- } else if self.buf.len() <= self.block_size {
- let block = self.buf.drain(..).collect::<Vec<u8>>();
- Ok(Some(block))
- } else {
- let block = self.buf.drain(..self.block_size).collect::<Vec<u8>>();
- Ok(Some(block))
- }
- }
-}
-
-async fn handle_delete(garage: Arc<Garage>, bucket: &str, key: &str) -> Result<UUID, Error> {
- let exists = match garage
- .object_table
- .get(&bucket.to_string(), &key.to_string())
- .await?
- {
- None => false,
- Some(o) => {
- let mut has_active_version = false;
- for v in o.versions().iter() {
- if v.data != ObjectVersionData::DeleteMarker {
- has_active_version = true;
- break;
+ match req.method() {
+ &Method::PUT | &Method::DELETE => Err(Error::Forbidden(
+ "Cannot create or delete buckets using S3 api, please talk to Garage directly"
+ .into(),
+ )),
+ &Method::GET => {
+ let mut params = HashMap::new();
+ if let Some(query) = req.uri().query() {
+ let query_pairs = url::form_urlencoded::parse(query.as_bytes());
+ for (key, val) in query_pairs {
+ params.insert(key.to_lowercase(), val.to_string());
+ }
+ }
+ if ["delimiter", "prefix"]
+ .iter()
+ .all(|x| params.contains_key(&x.to_string()))
+ {
+ let delimiter = params.get("delimiter").unwrap();
+ let max_keys = params
+ .get("max-keys")
+ .map(|x| {
+ x.parse::<usize>().map_err(|e| {
+ Error::BadRequest(format!("Invalid value for max-keys: {}", e))
+ })
+ })
+ .unwrap_or(Ok(1000))?;
+ let prefix = params.get("prefix").unwrap();
+ Ok(handle_list(garage, bucket, delimiter, max_keys, prefix).await?)
+ } else {
+ Err(Error::BadRequest(format!(
+ "Not a list call, so what is it?"
+ )))
}
}
- has_active_version
- }
- };
-
- if !exists {
- // No need to delete
- return Ok([0u8; 32].into());
- }
-
- let version_uuid = gen_uuid();
-
- 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,
- }],
- );
-
- garage.object_table.insert(&object).await?;
- return Ok(version_uuid);
-}
-
-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)
-}
-
-async fn handle_get(
- 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 last_v = match object
- .versions()
- .iter()
- .rev()
- .filter(|v| v.is_complete)
- .next()
- {
- Some(v) => v,
- None => return Err(Error::NotFound),
- };
-
- let resp_builder = object_headers(&last_v).status(StatusCode::OK);
-
- match &last_v.data {
- ObjectVersionData::DeleteMarker => Err(Error::NotFound),
- ObjectVersionData::Inline(bytes) => {
- let body: BodyType = Box::new(BytesBody::from(bytes.to_vec()));
- Ok(resp_builder.body(body)?)
- }
- ObjectVersionData::FirstBlock(first_block_hash) => {
- let read_first_block = garage.block_manager.rpc_get_block(&first_block_hash);
- let get_next_blocks = garage.version_table.get(&last_v.uuid, &EmptyKey);
-
- 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),
- };
-
- let mut blocks = version
- .blocks()
- .iter()
- .map(|vb| (vb.hash, None))
- .collect::<Vec<_>>();
- blocks[0].1 = Some(first_block);
-
- let body_stream = futures::stream::iter(blocks)
- .map(move |(hash, data_opt)| {
- let garage = garage.clone();
- async move {
- if let Some(data) = data_opt {
- Ok(Bytes::from(data))
- } else {
- garage
- .block_manager
- .rpc_get_block(&hash)
- .await
- .map(Bytes::from)
- }
- }
- })
- .buffered(2);
- let body: BodyType = Box::new(StreamBody::new(Box::pin(body_stream)));
- Ok(resp_builder.body(body)?)
+ _ => Err(Error::BadRequest(format!("Invalid method"))),
}
}
}