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|
use std::sync::Arc;
use std::time::{Duration, UNIX_EPOCH};
use futures::stream::*;
use hyper::body::Bytes;
use hyper::{Response, StatusCode};
use garage_util::error::Error;
use garage_table::EmptyKey;
use garage_core::garage::Garage;
use garage_core::object_table::*;
use crate::api_server::BodyType;
use crate::http_util::*;
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)
}
pub 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_data())
.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)
}
pub 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)?)
}
}
}
|
