1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
|
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::*;
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| {
match v.state {
ObjectVersionState::Aborted => false,
ObjectVersionState::Complete(ObjectVersionData::DeleteMarker) => false,
_ => true,
}
});
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(),
state: ObjectVersionState::Complete(ObjectVersionData::DeleteMarker),
}],
);
garage.object_table.insert(&object).await?;
return Ok((deleted_version, version_uuid));
}
pub async fn handle_delete(
garage: Arc<Garage>,
bucket: &str,
key: &str,
) -> Result<Response<Body>, 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(Body::from(vec![]))
.unwrap())
}
pub async fn handle_delete_objects(
garage: Arc<Garage>,
bucket: &str,
req: Request<Body>,
) -> Result<Response<Body>, 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#"<?xml version="1.0" encoding="UTF-8"?>"#).unwrap();
writeln!(&mut retxml, "<DeleteObjectsOutput>").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<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();
}
}
}
writeln!(&mut retxml, "</DeleteObjectsOutput>").unwrap();
Ok(Response::new(Body::from(retxml.into_bytes())))
}
struct DeleteRequest {
objects: Vec<DeleteObject>,
}
struct DeleteObject {
key: String,
}
fn parse_delete_objects_xml(xml: &roxmltree::Document) -> Result<DeleteRequest, String> {
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)
}
|
