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
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
|
use axum::body::{Body, StreamBody};
use axum::extract::{BodyStream, Path, Query};
use axum::handler::Handler;
use axum::response::{IntoResponse, Response};
use axum::routing::{get, head, post, put};
use axum::Router;
use hyper::StatusCode;
use serde::Serialize;
use sha2::{Digest, Sha256};
use std::path::PathBuf;
use tokio::io::AsyncWriteExt;
use tokio_util::io::ReaderStream;
use crate::util::gen_alphanumeric;
const REGISTRY_PATH: &'static str = "./data/registry";
pub fn registry_service() -> Router {
Router::new()
.nest("/v2", registry_api_v2())
.fallback(fallback.into_service())
}
fn registry_api_v2() -> Router {
Router::new()
.route("/", get(root_handler))
.route("/:name/blobs/:digest", head(blob_check).get(get_blob))
.route("/:name/blobs/uploads/", post(blob_upload))
.route(
"/:name/blobs/uploads/:uuid",
put(put_handler).patch(handle_upload),
)
.route(
"/:name/manifests/:reference",
get(get_manifest).put(put_manifest),
)
}
async fn fallback(request: axum::http::Request<Body>) -> impl IntoResponse {
// for debugging
println!("no route for {} {}", request.method(), request.uri());
StatusCode::NOT_FOUND
}
// root should return 200 OK to confirm api compliance
async fn root_handler() -> Response<Body> {
Response::builder()
.status(StatusCode::OK)
.header("Docker-Distribution-API-Version", "registry/2.0")
.body(Body::empty())
.unwrap()
}
#[derive(Serialize)]
pub struct RegistryErrors {
errors: Vec<RegistryError>,
}
#[derive(Serialize)]
pub struct RegistryError {
code: String,
message: String,
detail: serde_json::Value,
}
async fn blob_check(
Path((_repository_name, raw_digest)): Path<(String, String)>,
) -> impl IntoResponse {
let digest = raw_digest.strip_prefix("sha256:").unwrap();
let blob_path = PathBuf::from(REGISTRY_PATH).join("sha256").join(&digest);
if blob_path.exists() {
StatusCode::OK
} else {
StatusCode::NOT_FOUND
}
}
async fn get_blob(
Path((_repository_name, raw_digest)): Path<(String, String)>,
) -> impl IntoResponse {
let digest = raw_digest.strip_prefix("sha256:").unwrap();
let blob_path = PathBuf::from(REGISTRY_PATH).join("sha256").join(&digest);
if !blob_path.exists() {
return Err(StatusCode::NOT_FOUND);
}
let file = tokio::fs::File::open(&blob_path).await.unwrap();
let reader_stream = ReaderStream::new(file);
let stream_body = StreamBody::new(reader_stream);
Ok(stream_body)
}
async fn blob_upload(Path(repository_name): Path<String>) -> impl IntoResponse {
// let value = json!({
// "errors": [
// {
// "code": "UNSUPPORTED",
// "message": "not implemented yet lol",
// }
// ]
// });
let uuid = gen_alphanumeric(16);
tokio::fs::File::create(PathBuf::from(REGISTRY_PATH).join("uploads").join(&uuid))
.await
.unwrap();
Response::builder()
.status(StatusCode::ACCEPTED)
.header(
"Location",
format!("/v2/{}/blobs/uploads/{}", repository_name, uuid),
)
.header("Docker-Upload-UUID", uuid)
.header("Range", "bytes=0-0")
.body(Body::empty())
.unwrap()
}
use futures::StreamExt;
async fn handle_upload(
Path((repository_name, uuid)): Path<(String, String)>,
mut stream: BodyStream,
) -> impl IntoResponse {
// let content_length = headers.get("Content-Length").unwrap();
// let content_range = headers.get("Content-Range").unwrap();
// let content_type = headers.get("Content-Type").unwrap();
// assert!(content_type == "application/octet-stream");
let mut len = 0;
let upload_path = PathBuf::from(REGISTRY_PATH).join("uploads").join(&uuid);
let mut file = tokio::fs::OpenOptions::new()
.read(false)
.write(true)
.append(true)
.create(false)
.open(upload_path)
.await
.unwrap();
while let Some(Ok(chunk)) = stream.next().await {
let n_bytes = file.write(&chunk).await.unwrap();
len += n_bytes;
}
Response::builder()
.status(StatusCode::ACCEPTED)
.header(
"Location",
format!("/v2/{}/blobs/uploads/{}", repository_name, uuid),
)
.header("Docker-Upload-UUID", uuid)
.header("Range", format!("0-{}", len))
.body(Body::empty())
.unwrap()
}
use serde::Deserialize;
#[derive(Deserialize)]
struct UploadParams {
digest: String,
}
async fn put_handler(
Path((repository_name, uuid)): Path<(String, String)>,
Query(params): Query<UploadParams>,
mut stream: BodyStream,
) -> impl IntoResponse {
let mut _len = 0;
let upload_path = PathBuf::from(REGISTRY_PATH).join("uploads").join(&uuid);
let mut file = tokio::fs::OpenOptions::new()
.read(false)
.write(true)
.append(true)
.create(false)
.open(&upload_path)
.await
.unwrap();
while let Some(Ok(chunk)) = stream.next().await {
let n_bytes = file.write(&chunk).await.unwrap();
_len += n_bytes;
}
let digest = params.digest.strip_prefix("sha256:").unwrap();
// TODO: check the digest
let target_path = PathBuf::from(REGISTRY_PATH).join("sha256").join(&digest);
tokio::fs::rename(&upload_path, &target_path).await.unwrap();
Response::builder()
.status(StatusCode::CREATED)
.header(
"Location",
format!("/v2/{}/blobs/{}", repository_name, digest),
)
.header("Docker-Upload-UUID", uuid)
// .header("Range", format!("0-{}", len))
.header("Docker-Content-Digest", digest)
.body(Body::empty())
.unwrap()
}
async fn get_manifest(
Path((repository_name, reference)): Path<(String, String)>,
) -> impl IntoResponse {
let manifest_path = PathBuf::from(REGISTRY_PATH)
.join("manifests")
.join(&repository_name)
.join(&reference)
.with_extension("json");
let data = tokio::fs::read(&manifest_path).await.unwrap();
let manifest: serde_json::Map<String, serde_json::Value> =
serde_json::from_slice(&data).unwrap();
let media_type = manifest.get("mediaType").unwrap().as_str().unwrap();
Response::builder()
.status(StatusCode::OK)
.header("Content-Type", media_type)
.body(axum::body::Full::from(data))
.unwrap()
}
async fn put_manifest(
Path((repository_name, reference)): Path<(String, String)>,
mut stream: BodyStream,
) -> impl IntoResponse {
let repository_dir = PathBuf::from(REGISTRY_PATH)
.join("manifests")
.join(&repository_name);
tokio::fs::create_dir_all(&repository_dir).await.unwrap();
let mut hasher = Sha256::new();
let manifest_path = repository_dir.join(&reference).with_extension("json");
{
let mut file = tokio::fs::OpenOptions::new()
.write(true)
.create(true)
.truncate(true)
.open(&manifest_path)
.await
.unwrap();
while let Some(Ok(chunk)) = stream.next().await {
hasher.update(&chunk);
file.write(&chunk).await.unwrap();
}
}
let digest = hasher.finalize();
// TODO: store content-adressable manifests separately
let content_digest = format!("sha256:{:x}", digest);
let digest_path = repository_dir.join(&content_digest).with_extension("json");
tokio::fs::copy(manifest_path, digest_path).await.unwrap();
Response::builder()
.status(StatusCode::CREATED)
.header(
"Location",
format!("/v2/{}/manifests/{}", repository_name, reference),
)
.header("Docker-Content-Digest", content_digest)
.body(Body::empty())
.unwrap()
}
|
