forked from vieter-v/vieter
refactor(docker): remove old code
parent
e041682fea
commit
ce67208fbd
GPG Key ID:
B75D4F293C7052DB
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@ -253,14 +253,21 @@ fn (mut d Daemon) rebuild_base_image() bool {
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fn (mut d Daemon) clean_old_base_images() {
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mut i := 0
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mut dd := docker.new_conn() or {
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d.lerror('Failed to connect to Docker socket.')
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return
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}
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defer {
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dd.close() or {}
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}
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for i < d.builder_images.len - 1 {
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// For each builder image, we try to remove it by calling the Docker
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// API. If the function returns an error or false, that means the image
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// wasn't deleted. Therefore, we move the index over. If the function
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// returns true, the array's length has decreased by one so we don't
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// move the index.
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if !docker.remove_image(d.builder_images[i]) or { false } {
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i += 1
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}
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dd.remove_image(d.builder_images[i]) or { i += 1 }
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}
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}
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@ -30,7 +30,6 @@ pub fn (mut d DockerDaemon) containers() ?[]Container {
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return data
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}
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[params]
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pub struct NewContainer {
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image string [json: Image]
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entrypoint []string [json: Entrypoint]
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@ -74,26 +73,6 @@ pub fn (mut d DockerDaemon) start_container(id string) ? {
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}
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}
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// create_container creates a container defined by the given configuration. If
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// successful, it returns the ID of the newly created container.
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pub fn create_container(c &NewContainer) ?string {
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res := request_with_json('POST', urllib.parse('/v1.41/containers/create')?, c)?
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if res.status_code != 201 {
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return error('Failed to create container.')
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}
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return json.decode(CreatedContainer, res.text)?.id
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}
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// start_container starts a container with a given ID. It returns whether the
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// container was started or not.
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pub fn start_container(id string) ?bool {
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res := request('POST', urllib.parse('/v1.41/containers/$id/start')?)?
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return res.status_code == 204
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}
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struct ContainerInspect {
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pub mut:
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state ContainerState [json: State]
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@ -134,26 +113,6 @@ pub fn (mut d DockerDaemon) inspect_container(id string) ?ContainerInspect {
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return data
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}
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// inspect_container returns the result of inspecting a container with a given
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// ID.
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pub fn inspect_container(id string) ?ContainerInspect {
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res := request('GET', urllib.parse('/v1.41/containers/$id/json')?)?
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if res.status_code != 200 {
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return error('Failed to inspect container.')
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}
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mut data := json.decode(ContainerInspect, res.text)?
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data.state.start_time = time.parse_rfc3339(data.state.start_time_str)?
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if data.state.status == 'exited' {
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data.state.end_time = time.parse_rfc3339(data.state.end_time_str)?
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}
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return data
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}
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// remove_container removes the container with the given id.
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pub fn (mut d DockerDaemon) remove_container(id string) ? {
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d.send_request('DELETE', urllib.parse('/v1.41/containers/$id')?)?
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@ -166,13 +125,6 @@ pub fn (mut d DockerDaemon) remove_container(id string) ? {
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}
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}
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// remove_container removes a container with a given ID.
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pub fn remove_container(id string) ?bool {
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res := request('DELETE', urllib.parse('/v1.41/containers/$id')?)?
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return res.status_code == 204
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}
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// get_container_logs returns a reader object allowing access to the
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// container's logs.
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pub fn (mut d DockerDaemon) get_container_logs(id string) ?&StreamFormatReader {
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@ -189,25 +141,3 @@ pub fn (mut d DockerDaemon) get_container_logs(id string) ?&StreamFormatReader {
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return d.get_stream_format_reader()
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}
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// get_container_logs retrieves the logs for a Docker container, both stdout &
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// stderr.
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pub fn get_container_logs(id string) ?string {
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res := request('GET', urllib.parse('/v1.41/containers/$id/logs?stdout=true&stderr=true')?)?
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mut res_bytes := res.text.bytes()
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// Docker uses a special "stream" format for their logs, so we have to
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// clean up the data.
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mut index := 0
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for index < res_bytes.len {
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// The reverse is required because V reads in the bytes differently
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t := res_bytes[index + 4..index + 8].reverse()
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len_length := unsafe { *(&u32(&t[0])) }
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res_bytes.delete_many(index, 8)
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index += int(len_length)
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}
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return res_bytes.bytestr()
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}
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@ -1,91 +1,158 @@
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module docker
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import net.unix
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import net.urllib
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import io
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import net.http
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import strings
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import net.urllib
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import json
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import util
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// send writes a request to the Docker socket, waits for a response & returns
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// it.
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fn send(req &string) ?http.Response {
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// Open a connection to the socket
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mut s := unix.connect_stream(socket) or {
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return error('Failed to connect to socket ${socket}.')
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const (
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socket = '/var/run/docker.sock'
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buf_len = 10 * 1024
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http_separator = [u8(`\r`), `\n`, `\r`, `\n`]
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http_chunk_separator = [u8(`\r`), `\n`]
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)
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pub struct DockerDaemon {
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mut:
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socket &unix.StreamConn
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reader &io.BufferedReader
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}
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// new_conn creates a new connection to the Docker daemon.
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pub fn new_conn() ?&DockerDaemon {
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s := unix.connect_stream(docker.socket)?
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d := &DockerDaemon{
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socket: s
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reader: io.new_buffered_reader(reader: s)
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}
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defer {
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// This or is required because otherwise, the V compiler segfaults for
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// some reason
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// https://github.com/vlang/v/issues/13534
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s.close() or {}
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}
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return d
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}
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// Write the request to the socket
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s.write_string(req) or { return error('Failed to write request to socket ${socket}.') }
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// close closes the underlying socket connection.
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pub fn (mut d DockerDaemon) close() ? {
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d.socket.close()?
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}
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s.wait_for_write()?
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// send_request sends an HTTP request without body.
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pub fn (mut d DockerDaemon) send_request(method string, url urllib.URL) ? {
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req := '$method $url.request_uri() HTTP/1.1\nHost: localhost\n\n'
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d.socket.write_string(req)?
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// When starting a new request, the reader needs to be reset.
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d.reader = io.new_buffered_reader(reader: d.socket)
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}
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// send_request_with_body sends an HTTP request with the given body.
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pub fn (mut d DockerDaemon) send_request_with_body(method string, url urllib.URL, content_type string, body string) ? {
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req := '$method $url.request_uri() HTTP/1.1\nHost: localhost\nContent-Type: $content_type\nContent-Length: $body.len\n\n$body\n\n'
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d.socket.write_string(req)?
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// When starting a new request, the reader needs to be reset.
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d.reader = io.new_buffered_reader(reader: d.socket)
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}
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// send_request_with_json<T> is a convenience wrapper around
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// send_request_with_body that encodes the input as JSON.
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pub fn (mut d DockerDaemon) send_request_with_json<T>(method string, url urllib.URL, data &T) ? {
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body := json.encode(data)
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return d.send_request_with_body(method, url, 'application/json', body)
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}
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// read_response_head consumes the socket's contents until it encounters
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// '\r\n\r\n', after which it parses the response as an HTTP response.
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// Importantly, this function never consumes the reader past the HTTP
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// separator, so the body can be read fully later on.
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pub fn (mut d DockerDaemon) read_response_head() ?http.Response {
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mut c := 0
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mut buf := []u8{len: buf_len}
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mut buf := []u8{len: 4}
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mut res := []u8{}
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for {
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c = s.read(mut buf) or { return error('Failed to read data from socket ${socket}.') }
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c = d.reader.read(mut buf)?
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res << buf[..c]
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if c < buf_len {
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match_len := util.match_array_in_array(buf[..c], docker.http_separator)
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if match_len == 4 {
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break
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}
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}
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// After reading the first part of the response, we parse it into an HTTP
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// response. If it isn't chunked, we return early with the data.
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parsed := http.parse_response(res.bytestr()) or {
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return error('Failed to parse HTTP response from socket ${socket}.')
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}
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if match_len > 0 {
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mut buf2 := []u8{len: 4 - match_len}
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c2 := d.reader.read(mut buf2)?
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res << buf2[..c2]
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if parsed.header.get(http.CommonHeader.transfer_encoding) or { '' } != 'chunked' {
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return parsed
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}
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// We loop until we've encountered the end of the chunked response
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// A chunked HTTP response always ends with '0\r\n\r\n'.
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for res.len < 5 || res#[-5..] != [u8(`0`), `\r`, `\n`, `\r`, `\n`] {
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// Wait for the server to respond
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s.wait_for_write()?
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for {
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c = s.read(mut buf) or { return error('Failed to read data from socket ${socket}.') }
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res << buf[..c]
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if c < buf_len {
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if buf2 == docker.http_separator[match_len..] {
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break
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}
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}
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}
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// Decode chunked response
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return http.parse_response(res.bytestr())
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}
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// request_with_body sends a request to the Docker socket with the given body.
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fn request_with_body(method string, url urllib.URL, content_type string, body string) ?http.Response {
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req := '$method $url.request_uri() HTTP/1.1\nHost: localhost\nContent-Type: $content_type\nContent-Length: $body.len\n\n$body\n\n'
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// read_response_body reads `length` bytes from the stream. It can be used when
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// the response encoding isn't chunked to fully read it.
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pub fn (mut d DockerDaemon) read_response_body(length int) ?string {
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if length == 0 {
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return ''
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}
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return send(req)
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mut buf := []u8{len: docker.buf_len}
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mut c := 0
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mut builder := strings.new_builder(docker.buf_len)
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for builder.len < length {
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c = d.reader.read(mut buf) or { break }
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builder.write(buf[..c])?
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}
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return builder.str()
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}
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// request sends a request to the Docker socket with an empty body.
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fn request(method string, url urllib.URL) ?http.Response {
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req := '$method $url.request_uri() HTTP/1.1\nHost: localhost\n\n'
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// read_response is a convenience function which always consumes the entire
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// response & returns it. It should only be used when we're certain that the
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// result isn't too large.
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pub fn (mut d DockerDaemon) read_response() ?(http.Response, string) {
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head := d.read_response_head()?
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return send(req)
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if head.header.get(http.CommonHeader.transfer_encoding) or { '' } == 'chunked' {
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mut builder := strings.new_builder(1024)
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mut body := d.get_chunked_response_reader()
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util.reader_to_writer(mut body, mut builder)?
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return head, builder.str()
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}
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content_length := head.header.get(http.CommonHeader.content_length)?.int()
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res := d.read_response_body(content_length)?
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return head, res
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}
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// request_with_json<T> sends a request to the Docker socket with a given JSON
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// payload
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pub fn request_with_json<T>(method string, url urllib.URL, data &T) ?http.Response {
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body := json.encode(data)
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// get_chunked_response_reader returns a ChunkedResponseReader using the socket
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// as reader.
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pub fn (mut d DockerDaemon) get_chunked_response_reader() &ChunkedResponseReader {
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r := new_chunked_response_reader(d.reader)
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return request_with_body(method, url, 'application/json', body)
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return r
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}
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// get_stream_format_reader returns a StreamFormatReader using the socket as
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// reader.
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pub fn (mut d DockerDaemon) get_stream_format_reader() &StreamFormatReader {
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r := new_chunked_response_reader(d.reader)
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r2 := new_stream_format_reader(r)
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return r2
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}
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@ -32,11 +32,6 @@ pub fn (mut d DockerDaemon) pull_image(image string, tag string) ? {
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}
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}
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// pull_image pulls tries to pull the image for the given image & tag
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pub fn pull_image(image string, tag string) ?http.Response {
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return request('POST', urllib.parse('/v1.41/images/create?fromImage=$image&tag=$tag')?)
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}
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// create_image_from_container creates a new image from a container.
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pub fn (mut d DockerDaemon) create_image_from_container(id string, repo string, tag string) ?Image {
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d.send_request('POST', urllib.parse('/v1.41/commit?container=$id&repo=$repo&tag=$tag')?)?
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@ -53,25 +48,6 @@ pub fn (mut d DockerDaemon) create_image_from_container(id string, repo string,
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return data
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}
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// create_image_from_container creates a new image from a container with the
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// given repo & tag, given the container's ID.
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pub fn create_image_from_container(id string, repo string, tag string) ?Image {
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res := request('POST', urllib.parse('/v1.41/commit?container=$id&repo=$repo&tag=$tag')?)?
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if res.status_code != 201 {
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return error('Failed to create image from container.')
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}
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return json.decode(Image, res.text) or {}
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}
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// remove_image removes the image with the given ID.
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pub fn remove_image(id string) ?bool {
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res := request('DELETE', urllib.parse('/v1.41/images/$id')?)?
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return res.status_code == 200
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}
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// remove_image removes the image with the given id.
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pub fn (mut d DockerDaemon) remove_image(id string) ? {
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d.send_request('DELETE', urllib.parse('/v1.41/images/$id')?)?
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@ -1,158 +0,0 @@
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module docker
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import net.unix
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import io
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import net.http
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import strings
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import net.urllib
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import json
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import util
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const (
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socket = '/var/run/docker.sock'
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buf_len = 10 * 1024
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http_separator = [u8(`\r`), `\n`, `\r`, `\n`]
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http_chunk_separator = [u8(`\r`), `\n`]
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)
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pub struct DockerDaemon {
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mut:
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socket &unix.StreamConn
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reader &io.BufferedReader
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}
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// new_conn creates a new connection to the Docker daemon.
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pub fn new_conn() ?&DockerDaemon {
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s := unix.connect_stream(docker.socket)?
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d := &DockerDaemon{
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socket: s
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reader: io.new_buffered_reader(reader: s)
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}
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return d
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}
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// close closes the underlying socket connection.
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pub fn (mut d DockerDaemon) close() ? {
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d.socket.close()?
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}
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// send_request sends an HTTP request without body.
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pub fn (mut d DockerDaemon) send_request(method string, url urllib.URL) ? {
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req := '$method $url.request_uri() HTTP/1.1\nHost: localhost\n\n'
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d.socket.write_string(req)?
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// When starting a new request, the reader needs to be reset.
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d.reader = io.new_buffered_reader(reader: d.socket)
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}
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// send_request_with_body sends an HTTP request with the given body.
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pub fn (mut d DockerDaemon) send_request_with_body(method string, url urllib.URL, content_type string, body string) ? {
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req := '$method $url.request_uri() HTTP/1.1\nHost: localhost\nContent-Type: $content_type\nContent-Length: $body.len\n\n$body\n\n'
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d.socket.write_string(req)?
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// When starting a new request, the reader needs to be reset.
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d.reader = io.new_buffered_reader(reader: d.socket)
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}
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// send_request_with_json<T> is a convenience wrapper around
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// send_request_with_body that encodes the input as JSON.
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pub fn (mut d DockerDaemon) send_request_with_json<T>(method string, url urllib.URL, data &T) ? {
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body := json.encode(data)
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return d.send_request_with_body(method, url, 'application/json', body)
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}
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// read_response_head consumes the socket's contents until it encounters
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// '\r\n\r\n', after which it parses the response as an HTTP response.
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// Importantly, this function never consumes the reader past the HTTP
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// separator, so the body can be read fully later on.
|
||||
pub fn (mut d DockerDaemon) read_response_head() ?http.Response {
|
||||
mut c := 0
|
||||
mut buf := []u8{len: 4}
|
||||
mut res := []u8{}
|
||||
|
||||
for {
|
||||
c = d.reader.read(mut buf)?
|
||||
res << buf[..c]
|
||||
|
||||
match_len := util.match_array_in_array(buf[..c], docker.http_separator)
|
||||
|
||||
if match_len == 4 {
|
||||
break
|
||||
}
|
||||
|
||||
if match_len > 0 {
|
||||
mut buf2 := []u8{len: 4 - match_len}
|
||||
c2 := d.reader.read(mut buf2)?
|
||||
res << buf2[..c2]
|
||||
|
||||
if buf2 == docker.http_separator[match_len..] {
|
||||
break
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return http.parse_response(res.bytestr())
|
||||
}
|
||||
|
||||
// read_response_body reads `length` bytes from the stream. It can be used when
|
||||
// the response encoding isn't chunked to fully read it.
|
||||
pub fn (mut d DockerDaemon) read_response_body(length int) ?string {
|
||||
if length == 0 {
|
||||
return ''
|
||||
}
|
||||
|
||||
mut buf := []u8{len: docker.buf_len}
|
||||
mut c := 0
|
||||
mut builder := strings.new_builder(docker.buf_len)
|
||||
|
||||
for builder.len < length {
|
||||
c = d.reader.read(mut buf) or { break }
|
||||
|
||||
builder.write(buf[..c])?
|
||||
}
|
||||
|
||||
return builder.str()
|
||||
}
|
||||
|
||||
// read_response is a convenience function which always consumes the entire
|
||||
// response & returns it. It should only be used when we're certain that the
|
||||
// result isn't too large.
|
||||
pub fn (mut d DockerDaemon) read_response() ?(http.Response, string) {
|
||||
head := d.read_response_head()?
|
||||
|
||||
if head.header.get(http.CommonHeader.transfer_encoding) or { '' } == 'chunked' {
|
||||
mut builder := strings.new_builder(1024)
|
||||
mut body := d.get_chunked_response_reader()
|
||||
|
||||
util.reader_to_writer(mut body, mut builder)?
|
||||
|
||||
return head, builder.str()
|
||||
}
|
||||
|
||||
content_length := head.header.get(http.CommonHeader.content_length)?.int()
|
||||
res := d.read_response_body(content_length)?
|
||||
|
||||
return head, res
|
||||
}
|
||||
|
||||
// get_chunked_response_reader returns a ChunkedResponseReader using the socket
|
||||
// as reader.
|
||||
pub fn (mut d DockerDaemon) get_chunked_response_reader() &ChunkedResponseReader {
|
||||
r := new_chunked_response_reader(d.reader)
|
||||
|
||||
return r
|
||||
}
|
||||
|
||||
// get_stream_format_reader returns a StreamFormatReader using the socket as
|
||||
// reader.
|
||||
pub fn (mut d DockerDaemon) get_stream_format_reader() &StreamFormatReader {
|
||||
r := new_chunked_response_reader(d.reader)
|
||||
r2 := new_stream_format_reader(r)
|
||||
|
||||
return r2
|
||||
}
|
||||
Loading…
Reference in New Issue