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
|
use std::collections::{BTreeMap, BTreeSet};
use std::fmt::Write;
use std::sync::Arc;
use chrono::{DateTime, NaiveDateTime, SecondsFormat, Utc};
use hyper::{Body, Response};
use garage_util::error::Error;
use garage_model::garage::Garage;
use garage_model::object_table::*;
use crate::encoding::*;
#[derive(Debug)]
struct ListResultInfo {
last_modified: u64,
size: u64,
}
pub async fn handle_list(
garage: Arc<Garage>,
bucket: &str,
delimiter: &str,
max_keys: usize,
prefix: &str,
marker: Option<&str>,
urlencode_resp: bool,
) -> Result<Response<Body>, Error> {
let mut result_keys = BTreeMap::<String, ListResultInfo>::new();
let mut result_common_prefixes = BTreeSet::<String>::new();
let mut next_chunk_start = marker.unwrap_or(prefix).to_string();
debug!("List request: `{}` {} `{}`", delimiter, max_keys, prefix);
let truncated;
'query_loop: loop {
let objects = garage
.object_table
.get_range(
&bucket.to_string(),
Some(next_chunk_start.clone()),
Some(()),
max_keys + 1,
)
.await?;
debug!(
"List: get range {} (max {}), results: {}",
next_chunk_start,
max_keys + 1,
objects.len()
);
for object in objects.iter() {
if !object.key.starts_with(prefix) {
truncated = false;
break 'query_loop;
}
if let Some(version) = object.versions().iter().find(|x| x.is_data()) {
if result_keys.len() + result_common_prefixes.len() >= max_keys {
truncated = true;
break 'query_loop;
}
let common_prefix = if delimiter.len() > 0 {
let relative_key = &object.key[prefix.len()..];
relative_key
.find(delimiter)
.map(|i| &object.key[..prefix.len() + i + delimiter.len()])
} else {
None
};
if let Some(pfx) = common_prefix {
result_common_prefixes.insert(pfx.to_string());
} else {
let size = match &version.state {
ObjectVersionState::Complete(ObjectVersionData::Inline(meta, _)) => {
meta.size
}
ObjectVersionState::Complete(ObjectVersionData::FirstBlock(meta, _)) => {
meta.size
}
_ => unreachable!(),
};
let info = match result_keys.get(&object.key) {
None => ListResultInfo {
last_modified: version.timestamp,
size,
},
Some(_lri) => {
return Err(Error::Message(format!("Duplicate key?? {}", object.key)))
}
};
result_keys.insert(object.key.clone(), info);
};
}
}
if objects.len() < max_keys + 1 {
truncated = false;
break 'query_loop;
}
if objects.len() > 0 {
next_chunk_start = objects[objects.len() - 1].key.clone();
}
}
let mut xml = String::new();
writeln!(&mut xml, r#"<?xml version="1.0" encoding="UTF-8"?>"#).unwrap();
writeln!(
&mut xml,
r#"<ListBucketResult xmlns="http://s3.amazonaws.com/doc/2006-03-01/">"#
)
.unwrap();
writeln!(&mut xml, "\t<Bucket>{}</Bucket>", bucket).unwrap();
writeln!(&mut xml, "\t<Prefix>{}</Prefix>", prefix).unwrap();
writeln!(&mut xml, "\t<KeyCount>{}</KeyCount>", result_keys.len()).unwrap();
writeln!(&mut xml, "\t<MaxKeys>{}</MaxKeys>", max_keys).unwrap();
writeln!(&mut xml, "\t<IsTruncated>{}</IsTruncated>", truncated).unwrap();
for (key, info) in result_keys.iter() {
let last_modif = NaiveDateTime::from_timestamp(info.last_modified as i64 / 1000, 0);
let last_modif = DateTime::<Utc>::from_utc(last_modif, Utc);
let last_modif = last_modif.to_rfc3339_opts(SecondsFormat::Millis, true);
writeln!(&mut xml, "\t<Contents>").unwrap();
writeln!(
&mut xml,
"\t\t<Key>{}</Key>",
xml_escape(key),
//xml_encode_key(key, urlencode_resp) // doesn't work with nextcloud, wtf
)
.unwrap();
writeln!(&mut xml, "\t\t<LastModified>{}</LastModified>", last_modif).unwrap();
writeln!(&mut xml, "\t\t<Size>{}</Size>", info.size).unwrap();
writeln!(&mut xml, "\t\t<StorageClass>STANDARD</StorageClass>").unwrap();
writeln!(&mut xml, "\t</Contents>").unwrap();
}
if result_common_prefixes.len() > 0 {
writeln!(&mut xml, "\t<CommonPrefixes>").unwrap();
for pfx in result_common_prefixes.iter() {
writeln!(
&mut xml,
"\t\t<Prefix>{}</Prefix>",
xml_escape(pfx),
//xml_encode_key(pfx, urlencode_resp)
)
.unwrap();
}
writeln!(&mut xml, "\t</CommonPrefixes>").unwrap();
}
writeln!(&mut xml, "</ListBucketResult>").unwrap();
println!("{}", xml);
Ok(Response::new(Body::from(xml.into_bytes())))
}
|
