use std::fmt::Write; use std::sync::Arc; use hyper::{Body, Request, Response}; use garage_util::data::*; use garage_util::error::Error; use garage_model::garage::Garage; use garage_model::object_table::*; use crate::encoding::*; use crate::http_util::*; async fn handle_delete_internal( garage: &Garage, bucket: &str, key: &str, ) -> Result<(UUID, UUID), Error> { let object = match garage .object_table .get(&bucket.to_string(), &key.to_string()) .await? { None => { // No need to delete return Err(Error::NotFound); } Some(o) => o, }; let interesting_versions = object.versions().iter().filter(|v| { v.data != ObjectVersionData::DeleteMarker && v.state != ObjectVersionState::Aborted }); let mut must_delete = None; let mut timestamp = now_msec(); for v in interesting_versions { if v.timestamp + 1 > timestamp || must_delete.is_none() { must_delete = Some(v.uuid); } timestamp = std::cmp::max(timestamp, v.timestamp + 1); } let deleted_version = match must_delete { None => return Err(Error::NotFound), Some(v) => v, }; 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, state: ObjectVersionState::Complete, data: ObjectVersionData::DeleteMarker, }], ); garage.object_table.insert(&object).await?; return Ok((deleted_version, version_uuid)); } pub async fn handle_delete( garage: Arc, bucket: &str, key: &str, ) -> Result, Error> { let (_deleted_version, delete_marker_version) = handle_delete_internal(&garage, bucket, key).await?; Ok(Response::builder() .header("x-amz-version-id", hex::encode(delete_marker_version)) .body(empty_body()) .unwrap()) } pub async fn handle_delete_objects( garage: Arc, bucket: &str, req: Request, ) -> Result, Error> { let body = hyper::body::to_bytes(req.into_body()).await?; let cmd_xml = roxmltree::Document::parse(&std::str::from_utf8(&body)?)?; let cmd = parse_delete_objects_xml(&cmd_xml) .map_err(|e| Error::BadRequest(format!("Invald delete XML query: {}", e)))?; let mut retxml = String::new(); writeln!(&mut retxml, r#""#).unwrap(); writeln!(&mut retxml, "").unwrap(); 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").unwrap(); writeln!(&mut retxml, "\t\t{}", obj.key).unwrap(); writeln!( &mut retxml, "\t\t{}", hex::encode(deleted_version) ) .unwrap(); writeln!( &mut retxml, "\t\t{}", hex::encode(delete_marker_version) ) .unwrap(); writeln!(&mut retxml, "\t").unwrap(); } Err(e) => { writeln!(&mut retxml, "\t").unwrap(); writeln!(&mut retxml, "\t\t{}", e.http_status_code()).unwrap(); writeln!(&mut retxml, "\t\t{}", obj.key).unwrap(); writeln!( &mut retxml, "\t\t{}", xml_escape(&format!("{}", e)) ) .unwrap(); writeln!(&mut retxml, "\t").unwrap(); } } } writeln!(&mut retxml, "").unwrap(); Ok(Response::new(Box::new(BytesBody::from( retxml.into_bytes(), )))) } struct DeleteRequest { objects: Vec, } struct DeleteObject { key: String, } fn parse_delete_objects_xml(xml: &roxmltree::Document) -> Result { let mut ret = DeleteRequest { objects: vec![] }; let root = xml.root(); let delete = match root.first_child() { Some(del) => del, None => return Err(format!("Delete tag not found")), }; if !delete.has_tag_name("Delete") { return Err(format!("Invalid root tag: {:?}", root)); } 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) }