| 27 | } |
| 28 | |
| 29 | fn create_exec(container_id: &str, command: &str) -> Result<String, String> { |
| 30 | debug!( |
| 31 | "creating exec operation for container {}: {}", |
| 32 | container_id, command |
| 33 | ); |
| 34 | |
| 35 | let mut stream = UnixStream::connect(DOCKER_SOCKET) |
| 36 | .map_err(|e| format!("could not connect to {}: {}", DOCKER_SOCKET, e))?; |
| 37 | |
| 38 | stream |
| 39 | .set_read_timeout(Some(Duration::from_secs(15))) |
| 40 | .map_err(|e| format!("could not set read timeout for {}: {}", DOCKER_SOCKET, e))?; |
| 41 | |
| 42 | stream |
| 43 | .set_write_timeout(Some(Duration::from_secs(15))) |
| 44 | .map_err(|e| format!("could not set write timeout for {}: {}", DOCKER_SOCKET, e))?; |
| 45 | |
| 46 | let content = format!( |
| 47 | "{{ |
| 48 | \"AttachStdout\": true, |
| 49 | \"AttachStderr\": true, |
| 50 | \"Tty\": false, |
| 51 | \"Cmd\": [ \"sh\", \"-c\", {}] |
| 52 | }}", |
| 53 | serde_json::to_string(command).unwrap() |
| 54 | ); |
| 55 | |
| 56 | let request = format!("POST /containers/{}/exec HTTP/1.0\r\n", container_id) |
| 57 | + "Content-Type: application/json\r\n" |
| 58 | + &format!("Content-Length: {}\r\n", content.len()) |
| 59 | + &format!("\r\n{}", content); |
| 60 | |
| 61 | let response = do_request(&request, &mut stream)?; |
| 62 | let response = String::from_utf8_lossy(&response).to_string(); |
| 63 | |
| 64 | // split headers from response body |
| 65 | let response = format!("{{{}", response.split_once('{').unwrap().1); |
| 66 | // parse as generic hashmap |
| 67 | let response: HashMap<String, String> = serde_json::from_str(&response).unwrap(); |
| 68 | // get exec id |
| 69 | if let Some(exec_id) = response.get("Id") { |
| 70 | debug!("exec_id = '{}'", &exec_id); |
| 71 | return Ok(exec_id.to_owned()); |
| 72 | } |
| 73 | |
| 74 | Err(format!("{:?}", response)) |
| 75 | } |
| 76 | |
| 77 | fn do_exec(exec_id: &str) -> Result<Vec<u8>, String> { |
| 78 | debug!("dispatching exec operation {}", exec_id); |