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
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
|
//! Transports for communicating with the docker daemon
use crate::{Error, Result};
use futures_util::{
io::{AsyncRead, AsyncWrite},
stream::Stream,
StreamExt, TryFutureExt,
};
use hyper::{
body::Bytes,
client::{Client, HttpConnector},
header, Body, Method, Request, StatusCode,
};
#[cfg(feature = "tls")]
use hyper_openssl::HttpsConnector;
#[cfg(feature = "unix-socket")]
use hyperlocal::UnixConnector;
#[cfg(feature = "unix-socket")]
use hyperlocal::Uri as DomainUri;
use mime::Mime;
use pin_project::pin_project;
use serde::{Deserialize, Serialize};
use std::{
fmt, io, iter,
pin::Pin,
task::{Context, Poll},
};
pub fn tar() -> Mime {
"application/tar".parse().unwrap()
}
/// Transports are types which define the means of communication
/// with the docker daemon
#[derive(Clone)]
pub enum Transport {
/// A network tcp interface
Tcp {
client: Client<HttpConnector>,
host: String,
},
/// TCP/TLS
#[cfg(feature = "tls")]
EncryptedTcp {
client: Client<HttpsConnector<HttpConnector>>,
host: String,
},
/// A Unix domain socket
#[cfg(feature = "unix-socket")]
Unix {
client: Client<UnixConnector>,
path: String,
},
}
impl fmt::Debug for Transport {
fn fmt(
&self,
f: &mut fmt::Formatter,
) -> fmt::Result {
match *self {
Transport::Tcp { ref host, .. } => write!(f, "Tcp({})", host),
#[cfg(feature = "tls")]
Transport::EncryptedTcp { ref host, .. } => write!(f, "EncryptedTcp({})", host),
#[cfg(feature = "unix-socket")]
Transport::Unix { ref path, .. } => write!(f, "Unix({})", path),
}
}
}
impl Transport {
/// Make a request and return the whole response in a `String`
pub async fn request<B>(
&self,
method: Method,
endpoint: impl AsRef<str>,
body: Option<(B, Mime)>,
) -> Result<String>
where
B: Into<Body>,
{
let body = self
.get_body(method, endpoint, body, None::<iter::Empty<_>>)
.await?;
let bytes = hyper::body::to_bytes(body).await?;
let string = String::from_utf8(bytes.to_vec())?;
Ok(string)
}
async fn get_body<B, H>(
&self,
method: Method,
endpoint: impl AsRef<str>,
body: Option<(B, Mime)>,
headers: Option<H>,
) -> Result<Body>
where
B: Into<Body>,
H: IntoIterator<Item = (&'static str, String)>,
{
let req = self
.build_request(method, endpoint, body, headers, Request::builder())
.expect("Failed to build request!");
let response = self.send_request(req).await?;
let status = response.status();
match status {
// Success case: pass on the response
StatusCode::OK
| StatusCode::CREATED
| StatusCode::SWITCHING_PROTOCOLS
| StatusCode::NO_CONTENT => Ok(response.into_body()),
_ => {
let bytes = hyper::body::to_bytes(response.into_body()).await?;
let message_body = String::from_utf8(bytes.to_vec())?;
Err(Error::Fault {
code: status,
message: Self::get_error_message(&message_body).unwrap_or_else(|| {
status
.canonical_reason()
.unwrap_or_else(|| "unknown error code")
.to_owned()
}),
})
}
}
}
async fn get_chunk_stream<B, H>(
&self,
method: Method,
endpoint: impl AsRef<str>,
body: Option<(B, Mime)>,
headers: Option<H>,
) -> Result<impl Stream<Item = Result<Bytes>>>
where
B: Into<Body>,
H: IntoIterator<Item = (&'static str, String)>,
{
let body = self.get_body(method, endpoint, body, headers).await?;
Ok(stream_body(body))
}
pub fn stream_chunks<'a, H, B>(
&'a self,
method: Method,
endpoint: impl AsRef<str> + 'a,
body: Option<(B, Mime)>,
headers: Option<H>,
) -> impl Stream<Item = Result<Bytes>> + 'a
where
H: IntoIterator<Item = (&'static str, String)> + 'a,
B: Into<Body> + 'a,
{
self.get_chunk_stream(method, endpoint, body, headers)
.try_flatten_stream()
}
/// Builds an HTTP request.
fn build_request<B, H>(
&self,
method: Method,
endpoint: impl AsRef<str>,
body: Option<(B, Mime)>,
headers: Option<H>,
builder: hyper::http::request::Builder,
) -> Result<Request<Body>>
where
B: Into<Body>,
H: IntoIterator<Item = (&'static str, String)>,
{
let req = match *self {
Transport::Tcp { ref host, .. } => {
builder
.method(method)
.uri(&format!("{}{}", host, endpoint.as_ref()))
}
#[cfg(feature = "tls")]
Transport::EncryptedTcp { ref host, .. } => {
builder
.method(method)
.uri(&format!("{}{}", host, endpoint.as_ref()))
}
#[cfg(feature = "unix-socket")]
Transport::Unix { ref path, .. } => {
let uri = DomainUri::new(&path, endpoint.as_ref());
builder.method(method).uri(uri)
}
};
let mut req = req.header(header::HOST, "");
if let Some(h) = headers {
for (k, v) in h.into_iter() {
req = req.header(k, v);
}
}
match body {
Some((b, c)) => Ok(req
.header(header::CONTENT_TYPE, &c.to_string()[..])
.body(b.into())?),
_ => Ok(req.body(Body::empty())?),
}
}
/// Send the given request to the docker daemon and return a Future of the response.
async fn send_request(
&self,
req: Request<hyper::Body>,
) -> Result<hyper::Response<Body>> {
match self {
Transport::Tcp { ref client, .. } => Ok(client.request(req).await?),
#[cfg(feature = "tls")]
Transport::EncryptedTcp { ref client, .. } => Ok(client.request(req).await?),
#[cfg(feature = "unix-socket")]
Transport::Unix { ref client, .. } => Ok(client.request(req).await?),
}
}
/// Makes an HTTP request, upgrading the connection to a TCP
/// stream on success.
///
/// This method can be used for operations such as viewing
/// docker container logs interactively.
async fn stream_upgrade_tokio<B>(
&self,
method: Method,
endpoint: impl AsRef<str>,
body: Option<(B, Mime)>,
) -> Result<hyper::upgrade::Upgraded>
where
B: Into<Body>,
{
let req =<
|
