garage-unix-socket/src/api/s3_delete.rs

162 lines
4.2 KiB
Rust
Raw Normal View History

2020-05-01 15:52:35 +00:00
use std::fmt::Write;
2020-05-04 13:09:23 +00:00
use std::sync::Arc;
2020-05-01 15:52:35 +00:00
use hyper::{Body, Request, Response};
2020-04-28 10:18:14 +00:00
use garage_util::data::*;
2020-07-07 11:59:22 +00:00
use garage_model::garage::Garage;
use garage_model::object_table::*;
2020-04-28 10:18:14 +00:00
2020-05-01 15:52:35 +00:00
use crate::encoding::*;
2020-11-08 14:04:30 +00:00
use crate::error::*;
2020-05-01 15:52:35 +00:00
2020-05-04 13:09:23 +00:00
async fn handle_delete_internal(
garage: &Garage,
bucket: &str,
key: &str,
) -> Result<(UUID, UUID), Error> {
2020-11-11 15:12:42 +00:00
let object = garage
2020-04-28 10:18:14 +00:00
.object_table
.get(&bucket.to_string(), &key.to_string())
.await?
2020-11-11 15:12:42 +00:00
.ok_or(Error::NotFound)?; // No need to delete
2020-04-28 10:18:14 +00:00
2020-07-08 15:34:37 +00:00
let interesting_versions = object.versions().iter().filter(|v| match v.state {
ObjectVersionState::Aborted => false,
ObjectVersionState::Complete(ObjectVersionData::DeleteMarker) => false,
_ => true,
2020-04-28 10:18:14 +00:00
});
2020-05-01 15:52:35 +00:00
let mut must_delete = None;
2020-04-28 10:18:14 +00:00
let mut timestamp = now_msec();
for v in interesting_versions {
2020-05-04 13:09:23 +00:00
if v.timestamp + 1 > timestamp || must_delete.is_none() {
must_delete = Some(v.uuid);
}
2020-04-28 10:18:14 +00:00
timestamp = std::cmp::max(timestamp, v.timestamp + 1);
}
2020-11-11 15:12:42 +00:00
let deleted_version = must_delete.ok_or(Error::NotFound)?;
2020-04-28 10:18:14 +00:00
let version_uuid = gen_uuid();
let object = Object::new(
bucket.into(),
key.into(),
vec![ObjectVersion {
uuid: version_uuid,
timestamp: now_msec(),
2020-07-08 15:33:24 +00:00
state: ObjectVersionState::Complete(ObjectVersionData::DeleteMarker),
2020-04-28 10:18:14 +00:00
}],
);
garage.object_table.insert(&object).await?;
2020-05-01 15:52:35 +00:00
return Ok((deleted_version, version_uuid));
}
2020-05-04 13:09:23 +00:00
pub async fn handle_delete(
garage: Arc<Garage>,
bucket: &str,
key: &str,
) -> Result<Response<Body>, Error> {
2020-05-04 13:09:23 +00:00
let (_deleted_version, delete_marker_version) =
handle_delete_internal(&garage, bucket, key).await?;
2020-05-01 15:52:35 +00:00
Ok(Response::builder()
.header("x-amz-version-id", hex::encode(delete_marker_version))
.body(Body::from(vec![]))
2020-05-01 15:52:35 +00:00
.unwrap())
}
2020-05-04 13:09:23 +00:00
pub async fn handle_delete_objects(
garage: Arc<Garage>,
bucket: &str,
req: Request<Body>,
) -> Result<Response<Body>, Error> {
2020-05-04 13:09:23 +00:00
let body = hyper::body::to_bytes(req.into_body()).await?;
let cmd_xml = roxmltree::Document::parse(&std::str::from_utf8(&body)?)?;
2020-11-08 14:04:30 +00:00
let cmd = parse_delete_objects_xml(&cmd_xml).ok_or_bad_request("Invalid delete XML query")?;
2020-05-04 13:09:23 +00:00
let mut retxml = String::new();
2020-05-01 15:52:35 +00:00
writeln!(&mut retxml, r#"<?xml version="1.0" encoding="UTF-8"?>"#).unwrap();
writeln!(&mut retxml, "<DeleteObjectsOutput>").unwrap();
2020-05-04 13:09:23 +00:00
for obj in cmd.objects.iter() {
match handle_delete_internal(&garage, bucket, &obj.key).await {
Ok((deleted_version, delete_marker_version)) => {
writeln!(&mut retxml, "\t<Deleted>").unwrap();
writeln!(&mut retxml, "\t\t<Key>{}</Key>", obj.key).unwrap();
writeln!(
&mut retxml,
"\t\t<VersionId>{}</VersionId>",
hex::encode(deleted_version)
)
.unwrap();
writeln!(
&mut retxml,
"\t\t<DeleteMarkerVersionId>{}</DeleteMarkerVersionId>",
hex::encode(delete_marker_version)
)
.unwrap();
writeln!(&mut retxml, "\t</Deleted>").unwrap();
}
Err(e) => {
writeln!(&mut retxml, "\t<Error>").unwrap();
writeln!(&mut retxml, "\t\t<Code>{}</Code>", e.http_status_code()).unwrap();
writeln!(&mut retxml, "\t\t<Key>{}</Key>", obj.key).unwrap();
writeln!(
&mut retxml,
"\t\t<Message>{}</Message>",
xml_escape(&format!("{}", e))
)
.unwrap();
writeln!(&mut retxml, "\t</Error>").unwrap();
}
}
}
2020-05-01 15:52:35 +00:00
writeln!(&mut retxml, "</DeleteObjectsOutput>").unwrap();
Ok(Response::new(Body::from(retxml.into_bytes())))
2020-05-01 15:52:35 +00:00
}
struct DeleteRequest {
2020-05-04 13:09:23 +00:00
objects: Vec<DeleteObject>,
2020-04-28 10:18:14 +00:00
}
2020-05-01 15:52:35 +00:00
struct DeleteObject {
2020-05-04 13:09:23 +00:00
key: String,
2020-05-01 15:52:35 +00:00
}
fn parse_delete_objects_xml(xml: &roxmltree::Document) -> Result<DeleteRequest, String> {
2020-05-04 13:09:23 +00:00
let mut ret = DeleteRequest { objects: vec![] };
let root = xml.root();
2020-11-11 15:12:42 +00:00
let delete = root.first_child().ok_or(format!("Delete tag not found"))?;
2020-05-04 13:09:23 +00:00
if !delete.has_tag_name("Delete") {
return Err(format!("Invalid root tag: {:?}", root));
}
2020-05-01 15:52:35 +00:00
2020-05-04 13:09:23 +00:00
for item in delete.children() {
if item.has_tag_name("Object") {
if let Some(key) = item.children().find(|e| e.has_tag_name("Key")) {
if let Some(key_str) = key.text() {
ret.objects.push(DeleteObject {
key: key_str.to_string(),
});
} else {
return Err(format!("No text for key: {:?}", key));
}
} else {
return Err(format!("No delete key for item: {:?}", item));
}
} else {
return Err(format!("Invalid delete item: {:?}", item));
}
}
Ok(ret)
}