forked from Deuxfleurs/garage
167 lines
3.9 KiB
Rust
167 lines
3.9 KiB
Rust
use std::sync::Arc;
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use hyper::{Body, Request, Response, StatusCode};
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use garage_util::data::*;
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use garage_util::time::*;
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use garage_model::garage::Garage;
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use garage_model::object_table::*;
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use crate::error::*;
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use crate::s3_xml;
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use crate::signature::verify_signed_content;
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async fn handle_delete_internal(
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garage: &Garage,
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bucket: &str,
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key: &str,
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) -> Result<(Uuid, Uuid), Error> {
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let object = garage
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.object_table
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.get(&bucket.to_string(), &key.to_string())
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.await?
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.ok_or(Error::NotFound)?; // No need to delete
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let interesting_versions = object.versions().iter().filter(|v| {
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!matches!(
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v.state,
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ObjectVersionState::Aborted
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| ObjectVersionState::Complete(ObjectVersionData::DeleteMarker)
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)
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});
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let mut version_to_delete = None;
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let mut timestamp = now_msec();
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for v in interesting_versions {
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if v.timestamp + 1 > timestamp || version_to_delete.is_none() {
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version_to_delete = Some(v.uuid);
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}
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timestamp = std::cmp::max(timestamp, v.timestamp + 1);
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}
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let deleted_version = version_to_delete.ok_or(Error::NotFound)?;
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let version_uuid = gen_uuid();
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let object = Object::new(
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bucket.into(),
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key.into(),
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vec![ObjectVersion {
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uuid: version_uuid,
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timestamp,
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state: ObjectVersionState::Complete(ObjectVersionData::DeleteMarker),
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}],
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);
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garage.object_table.insert(&object).await?;
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Ok((deleted_version, version_uuid))
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}
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pub async fn handle_delete(
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garage: Arc<Garage>,
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bucket: &str,
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key: &str,
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) -> Result<Response<Body>, Error> {
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let (_deleted_version, delete_marker_version) =
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handle_delete_internal(&garage, bucket, key).await?;
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Ok(Response::builder()
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.header("x-amz-version-id", hex::encode(delete_marker_version))
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.status(StatusCode::NO_CONTENT)
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.body(Body::from(vec![]))
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.unwrap())
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}
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pub async fn handle_delete_objects(
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garage: Arc<Garage>,
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bucket: &str,
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req: Request<Body>,
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content_sha256: Option<Hash>,
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) -> Result<Response<Body>, Error> {
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let body = hyper::body::to_bytes(req.into_body()).await?;
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verify_signed_content(content_sha256, &body[..])?;
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let cmd_xml = roxmltree::Document::parse(std::str::from_utf8(&body)?)?;
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let cmd = parse_delete_objects_xml(&cmd_xml).ok_or_bad_request("Invalid delete XML query")?;
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let mut ret_deleted = Vec::new();
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let mut ret_errors = Vec::new();
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for obj in cmd.objects.iter() {
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match handle_delete_internal(&garage, bucket, &obj.key).await {
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Ok((deleted_version, delete_marker_version)) => {
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if cmd.quiet {
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continue;
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}
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ret_deleted.push(s3_xml::Deleted {
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key: s3_xml::Value(obj.key.clone()),
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version_id: s3_xml::Value(hex::encode(deleted_version)),
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delete_marker_version_id: s3_xml::Value(hex::encode(delete_marker_version)),
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});
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}
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Err(e) => {
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ret_errors.push(s3_xml::DeleteError {
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code: s3_xml::Value(e.aws_code().to_string()),
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key: Some(s3_xml::Value(obj.key.clone())),
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message: s3_xml::Value(format!("{}", e)),
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version_id: None,
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});
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}
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}
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}
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let xml = s3_xml::to_xml_with_header(&s3_xml::DeleteResult {
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xmlns: (),
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deleted: ret_deleted,
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errors: ret_errors,
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})?;
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Ok(Response::builder()
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.header("Content-Type", "application/xml")
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.body(Body::from(xml))?)
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}
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struct DeleteRequest {
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quiet: bool,
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objects: Vec<DeleteObject>,
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}
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struct DeleteObject {
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key: String,
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}
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fn parse_delete_objects_xml(xml: &roxmltree::Document) -> Option<DeleteRequest> {
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let mut ret = DeleteRequest {
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quiet: false,
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objects: vec![],
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};
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let root = xml.root();
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let delete = root.first_child()?;
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if !delete.has_tag_name("Delete") {
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return None;
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}
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for item in delete.children() {
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if item.has_tag_name("Object") {
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let key = item.children().find(|e| e.has_tag_name("Key"))?;
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let key_str = key.text()?;
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ret.objects.push(DeleteObject {
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key: key_str.to_string(),
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});
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} else if item.has_tag_name("Quiet") {
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if item.text()? == "true" {
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ret.quiet = true;
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} else {
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ret.quiet = false;
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}
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} else {
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return None;
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}
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}
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Some(ret)
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}
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