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Docker remote api example
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package main | |
import ( | |
"archive/tar" | |
"bytes" | |
"io" | |
"log" | |
"net" | |
"net/http" | |
"net/http/httputil" | |
"net/url" | |
"os" | |
"github.com/docker/docker/utils" | |
) | |
var dockerfile = `FROM debian:jessie | |
RUN touch hello.txt` | |
func Compress(dockerfile string) (io.Reader, error) { | |
b := bytes.NewBuffer([]byte{}) | |
tw := tar.NewWriter(b) | |
hdr := &tar.Header{ | |
Name: "Dockerfile", | |
Size: int64(len(dockerfile)), | |
} | |
if err := tw.WriteHeader(hdr); err != nil { | |
return nil, err | |
} | |
if _, err := tw.Write([]byte(dockerfile)); err != nil { | |
return nil, err | |
} | |
if err := tw.Close(); err != nil { | |
return nil, err | |
} | |
return b, nil | |
} | |
func main() { | |
must := func(err error) { | |
if err != nil { | |
log.Fatal(err) | |
} | |
} | |
endpoint := "unix:///var/run/docker.sock" | |
u, err := url.Parse(endpoint) | |
must(err) | |
path := "/build" | |
zipped, err := Compress(dockerfile) | |
must(err) | |
req, err := http.NewRequest("POST", path, zipped) | |
must(err) | |
req.Header.Set("Content-Type", "application/tar") | |
dial, err := net.Dial(u.Scheme, u.Path) | |
must(err) | |
defer dial.Close() | |
conn := httputil.NewClientConn(dial, nil) | |
resp, err := conn.Do(req) | |
must(err) | |
defer resp.Body.Close() | |
io.Copy(os.Stderr, resp.Body) | |
utils.DisplayJSONMessagesStream(resp.Body, os.Stdout, os.Stdout.Fd(), true) | |
} |
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package main | |
import ( | |
"encoding/json" | |
"fmt" | |
"net" | |
"net/http" | |
"net/http/httputil" | |
"net/url" | |
"strconv" | |
"time" | |
) | |
type JSONTime time.Time | |
func (t *JSONTime) UnmarshalJSON(b []byte) error { | |
i, err := strconv.ParseInt(string(b), 10, 64) | |
if err != nil { | |
return err | |
} | |
*t = JSONTime(time.Unix(i, 0)) | |
return nil | |
} | |
type dockerImage struct { | |
RepoTags []string | |
Created JSONTime | |
Id string | |
Size int | |
VirtualSize int | |
} | |
func dockerImages(endpoint string) ([]dockerImage, error) { | |
images := []dockerImage{} | |
u, err := url.Parse(endpoint) | |
if err != nil { | |
return images, err | |
} | |
path := "/images/json?all=1" | |
req, err := http.NewRequest("GET", path, nil) | |
if err != nil { | |
return images, err | |
} | |
dial, err := net.Dial(u.Scheme, u.Path) | |
if err != nil { | |
return images, err | |
} | |
defer dial.Close() | |
conn := httputil.NewClientConn(dial, nil) | |
resp, err := conn.Do(req) | |
if err != nil { | |
return images, err | |
} | |
defer resp.Body.Close() | |
err = json.NewDecoder(resp.Body).Decode(&images) | |
return images, err | |
} | |
func main() { | |
images, err := dockerImages("unix:///var/run/docker.sock") | |
if err == nil { | |
for i := range images { | |
fmt.Println(images[i]) | |
} | |
} else { | |
fmt.Println(err) | |
} | |
} |
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