vieter/src/docker/docker.v

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module docker
import net.unix
import net.urllib
import net.http
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import json
const socket = '/var/run/docker.sock'
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const buf_len = 1024
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fn send(req &string) ?http.Response {
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// Open a connection to the socket
mut s := unix.connect_stream(docker.socket) ?
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defer {
// This or is required because otherwise, the V compiler segfaults for
// some reason
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// https://github.com/vlang/v/issues/13534
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s.close() or {}
}
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// Write the request to the socket
s.write_string(req) ?
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mut buf := []byte{len: docker.buf_len}
mut res := []byte{}
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mut c := 0
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for res.len < 5 && res#[-4..] != [0, '\r', `\n`, `\r`, `\n`] {
// Wait for the server to respond
s.wait_for_write() ?
for {
c = s.read(mut buf) or { return error('Failed to read data from socket.') }
res << buf[..c]
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if c < docker.buf_len {
break
}
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}
}
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println(res)
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// Decode chunked response
return http.parse_response(res.bytestr())
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}
fn request_with_body(method string, url urllib.URL, body &string) ?http.Response {
req := '$method $url.request_uri() HTTP/1.1\nHost: localhost\nContent-Length: ${body.len}\n$body\n'
return send(req)
}
fn request(method string, url urllib.URL) ?http.Response {
req := '$method $url.request_uri() HTTP/1.1\nHost: localhost\n\n'
return send(req)
}
pub fn request_with_json<T>(method string, url urllib.URL, data T) ?http.Response {
body := json.encode(data)
println(body)
return request_with_body(method, url, body)
}
fn get(url urllib.URL) ?http.Response {
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return request('GET', url)
}
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struct ImagePull {
from_image string [json: fromImage]
tag string
}
pub fn pull(image string, tag string) ?http.Response {
// data := ImagePull{
// from_image: image
// tag: tag
// }
// return request_with_json("POST", urllib.parse("/images/create") ?, data)
return request("POST", urllib.parse("/images/create?fromImage=$image&tag=$tag") ?)
}