0ct0pu5/moby
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

* Remote API: add versioning

Browse source
This commit is contained in:
Solomon Hykes 2013-05-23 10:44:36 -06:00
commit 66f3a96983
3 changed files with 75 additions and 63 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

76
api.go
View file

@ -13,6 +13,8 @@ import (
"strings"
)
const API_VERSION = 1.0
func hijackServer(w http.ResponseWriter) (io.ReadCloser, io.Writer, error) {
conn, _, err := w.(http.Hijacker).Hijack()
if err != nil {
@ -56,7 +58,7 @@ func getBoolParam(value string) (bool, error) {
return false, fmt.Errorf("Bad parameter")
}
func getAuth(srv *Server, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
func getAuth(srv *Server, version float64, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
b, err := json.Marshal(srv.registry.GetAuthConfig())
if err != nil {
return err
@ -65,7 +67,7 @@ func getAuth(srv *Server, w http.ResponseWriter, r *http.Request, vars map[strin
return nil
}
func postAuth(srv *Server, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
func postAuth(srv *Server, version float64, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
config := &auth.AuthConfig{}
if err := json.NewDecoder(r.Body).Decode(config); err != nil {
return err
@ -94,7 +96,7 @@ func postAuth(srv *Server, w http.ResponseWriter, r *http.Request, vars map[stri
return nil
}
func getVersion(srv *Server, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
func getVersion(srv *Server, version float64, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
m := srv.DockerVersion()
b, err := json.Marshal(m)
if err != nil {
@ -104,7 +106,7 @@ func getVersion(srv *Server, w http.ResponseWriter, r *http.Request, vars map[st
return nil
}
func postContainersKill(srv *Server, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
func postContainersKill(srv *Server, version float64, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if vars == nil {
return fmt.Errorf("Missing parameter")
}
@ -116,7 +118,7 @@ func postContainersKill(srv *Server, w http.ResponseWriter, r *http.Request, var
return nil
}
func getContainersExport(srv *Server, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
func getContainersExport(srv *Server, version float64, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if vars == nil {
return fmt.Errorf("Missing parameter")
}
@ -129,7 +131,7 @@ func getContainersExport(srv *Server, w http.ResponseWriter, r *http.Request, va
return nil
}
func getImagesJson(srv *Server, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
func getImagesJson(srv *Server, version float64, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if err := parseForm(r); err != nil {
return err
}
@ -152,14 +154,14 @@ func getImagesJson(srv *Server, w http.ResponseWriter, r *http.Request, vars map
return nil
}
func getImagesViz(srv *Server, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
func getImagesViz(srv *Server, version float64, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if err := srv.ImagesViz(w); err != nil {
return err
}
return nil
}
func getInfo(srv *Server, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
func getInfo(srv *Server, version float64, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
out := srv.DockerInfo()
b, err := json.Marshal(out)
if err != nil {
@ -169,7 +171,7 @@ func getInfo(srv *Server, w http.ResponseWriter, r *http.Request, vars map[strin
return nil
}
func getImagesHistory(srv *Server, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
func getImagesHistory(srv *Server, version float64, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if vars == nil {
return fmt.Errorf("Missing parameter")
}
@ -186,7 +188,7 @@ func getImagesHistory(srv *Server, w http.ResponseWriter, r *http.Request, vars
return nil
}
func getContainersChanges(srv *Server, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
func getContainersChanges(srv *Server, version float64, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if vars == nil {
return fmt.Errorf("Missing parameter")
}
@ -203,7 +205,7 @@ func getContainersChanges(srv *Server, w http.ResponseWriter, r *http.Request, v
return nil
}
func getContainersPs(srv *Server, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
func getContainersPs(srv *Server, version float64, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if err := parseForm(r); err != nil {
return err
}
@ -227,7 +229,7 @@ func getContainersPs(srv *Server, w http.ResponseWriter, r *http.Request, vars m
return nil
}
func postImagesTag(srv *Server, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
func postImagesTag(srv *Server, version float64, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if err := parseForm(r); err != nil {
return err
}
@ -249,7 +251,7 @@ func postImagesTag(srv *Server, w http.ResponseWriter, r *http.Request, vars map
return nil
}
func postCommit(srv *Server, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
func postCommit(srv *Server, version float64, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if err := parseForm(r); err != nil {
return err
}
@ -276,7 +278,7 @@ func postCommit(srv *Server, w http.ResponseWriter, r *http.Request, vars map[st
}
// Creates an image from Pull or from Import
func postImagesCreate(srv *Server, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
func postImagesCreate(srv *Server, version float64, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if err := parseForm(r); err != nil {
return err
}
@ -299,7 +301,7 @@ func postImagesCreate(srv *Server, w http.ResponseWriter, r *http.Request, vars
return nil
}
func getImagesSearch(srv *Server, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
func getImagesSearch(srv *Server, version float64, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if err := parseForm(r); err != nil {
return err
}
@ -317,7 +319,7 @@ func getImagesSearch(srv *Server, w http.ResponseWriter, r *http.Request, vars m
return nil
}
func postImagesInsert(srv *Server, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
func postImagesInsert(srv *Server, version float64, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if err := parseForm(r); err != nil {
return err
}
@ -335,7 +337,7 @@ func postImagesInsert(srv *Server, w http.ResponseWriter, r *http.Request, vars
return nil
}
func postImagesPush(srv *Server, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
func postImagesPush(srv *Server, version float64, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if err := parseForm(r); err != nil {
return err
}
@ -352,7 +354,7 @@ func postImagesPush(srv *Server, w http.ResponseWriter, r *http.Request, vars ma
return nil
}
func postContainersCreate(srv *Server, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
func postContainersCreate(srv *Server, version float64, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
config := &Config{}
if err := json.NewDecoder(r.Body).Decode(config); err != nil {
return err
@ -382,7 +384,7 @@ func postContainersCreate(srv *Server, w http.ResponseWriter, r *http.Request, v
return nil
}
func postContainersRestart(srv *Server, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
func postContainersRestart(srv *Server, version float64, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if err := parseForm(r); err != nil {
return err
}
@ -401,7 +403,7 @@ func postContainersRestart(srv *Server, w http.ResponseWriter, r *http.Request,
return nil
}
func deleteContainers(srv *Server, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
func deleteContainers(srv *Server, version float64, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if err := parseForm(r); err != nil {
return err
}
@ -421,7 +423,7 @@ func deleteContainers(srv *Server, w http.ResponseWriter, r *http.Request, vars
return nil
}
func deleteImages(srv *Server, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
func deleteImages(srv *Server, version float64, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if vars == nil {
return fmt.Errorf("Missing parameter")
}
@ -433,7 +435,7 @@ func deleteImages(srv *Server, w http.ResponseWriter, r *http.Request, vars map[
return nil
}
func postContainersStart(srv *Server, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
func postContainersStart(srv *Server, version float64, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if vars == nil {
return fmt.Errorf("Missing parameter")
}
@ -445,7 +447,7 @@ func postContainersStart(srv *Server, w http.ResponseWriter, r *http.Request, va
return nil
}
func postContainersStop(srv *Server, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
func postContainersStop(srv *Server, version float64, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if err := parseForm(r); err != nil {
return err
}
@ -466,7 +468,7 @@ func postContainersStop(srv *Server, w http.ResponseWriter, r *http.Request, var
return nil
}
func postContainersWait(srv *Server, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
func postContainersWait(srv *Server, version float64, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if vars == nil {
return fmt.Errorf("Missing parameter")
}
@ -483,7 +485,7 @@ func postContainersWait(srv *Server, w http.ResponseWriter, r *http.Request, var
return nil
}
func postContainersAttach(srv *Server, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
func postContainersAttach(srv *Server, version float64, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if err := parseForm(r); err != nil {
return err
}
@ -526,7 +528,7 @@ func postContainersAttach(srv *Server, w http.ResponseWriter, r *http.Request, v
return nil
}
func getContainersByName(srv *Server, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
func getContainersByName(srv *Server, version float64, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if vars == nil {
return fmt.Errorf("Missing parameter")
}
@ -544,7 +546,7 @@ func getContainersByName(srv *Server, w http.ResponseWriter, r *http.Request, va
return nil
}
func getImagesByName(srv *Server, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
func getImagesByName(srv *Server, version float64, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if vars == nil {
return fmt.Errorf("Missing parameter")
}
@ -562,7 +564,7 @@ func getImagesByName(srv *Server, w http.ResponseWriter, r *http.Request, vars m
return nil
}
func postImagesGetCache(srv *Server, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
func postImagesGetCache(srv *Server, version float64, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
apiConfig := &ApiImageConfig{}
if err := json.NewDecoder(r.Body).Decode(apiConfig); err != nil {
return err
@ -589,7 +591,7 @@ func ListenAndServe(addr string, srv *Server, logging bool) error {
r := mux.NewRouter()
log.Printf("Listening for HTTP on %s\n", addr)
m := map[string]map[string]func(*Server, http.ResponseWriter, *http.Request, map[string]string) error{
m := map[string]map[string]func(*Server, float64, http.ResponseWriter, *http.Request, map[string]string) error{
"GET": {
"/auth": getAuth,
"/version": getVersion,
@ -633,7 +635,7 @@ func ListenAndServe(addr string, srv *Server, logging bool) error {
localRoute := route
localMethod := method
localFct := fct
r.Path(localRoute).Methods(localMethod).HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
f := func(w http.ResponseWriter, r *http.Request) {
utils.Debugf("Calling %s %s", localMethod, localRoute)
if logging {
log.Println(r.Method, r.RequestURI)
@ -644,10 +646,20 @@ func ListenAndServe(addr string, srv *Server, logging bool) error {
utils.Debugf("Warning: client and server don't have the same version (client: %s, server: %s)", userAgent[1], VERSION)
}
}
if err := localFct(srv, w, r, mux.Vars(r)); err != nil {
version, err := strconv.ParseFloat(mux.Vars(r)["version"], 64)
if err != nil {
version = API_VERSION
}
if version == 0 || version > API_VERSION {
w.WriteHeader(http.StatusNotFound)
return
}
if err := localFct(srv, version, w, r, mux.Vars(r)); err != nil {
httpError(w, err)
}
})
}
r.Path("/v{version:[0-9.]+}" + localRoute).Methods(localMethod).HandlerFunc(f)
r.Path(localRoute).Methods(localMethod).HandlerFunc(f)
}
}

52
api_test.go
View file

@ -48,7 +48,7 @@ func TestGetAuth(t *testing.T) {
t.Fatal(err)
}
if err := postAuth(srv, r, req, nil); err != nil {
if err := postAuth(srv, API_VERSION, r, req, nil); err != nil {
t.Fatal(err)
}
@ -74,7 +74,7 @@ func TestGetVersion(t *testing.T) {
r := httptest.NewRecorder()
if err := getVersion(srv, r, nil, nil); err != nil {
if err := getVersion(srv, API_VERSION, r, nil, nil); err != nil {
t.Fatal(err)
}
@ -98,7 +98,7 @@ func TestGetInfo(t *testing.T) {
r := httptest.NewRecorder()
if err := getInfo(srv, r, nil, nil); err != nil {
if err := getInfo(srv, API_VERSION, r, nil, nil); err != nil {
t.Fatal(err)
}
@ -129,7 +129,7 @@ func TestGetImagesJson(t *testing.T) {
r := httptest.NewRecorder()
if err := getImagesJson(srv, r, req, nil); err != nil {
if err := getImagesJson(srv, API_VERSION, r, req, nil); err != nil {
t.Fatal(err)
}
@ -154,7 +154,7 @@ func TestGetImagesJson(t *testing.T) {
t.Fatal(err)
}
if err := getImagesJson(srv, r2, req2, nil); err != nil {
if err := getImagesJson(srv, API_VERSION, r2, req2, nil); err != nil {
t.Fatal(err)
}
@ -179,7 +179,7 @@ func TestGetImagesJson(t *testing.T) {
t.Fatal(err)
}
if err := getImagesJson(srv, r3, req3, nil); err != nil {
if err := getImagesJson(srv, API_VERSION, r3, req3, nil); err != nil {
t.Fatal(err)
}
@ -200,7 +200,7 @@ func TestGetImagesJson(t *testing.T) {
t.Fatal(err)
}
err = getImagesJson(srv, r4, req4, nil)
err = getImagesJson(srv, API_VERSION, r4, req4, nil)
if err == nil {
t.Fatalf("Error expected, received none")
}
@ -221,7 +221,7 @@ func TestGetImagesViz(t *testing.T) {
srv := &Server{runtime: runtime}
r := httptest.NewRecorder()
if err := getImagesViz(srv, r, nil, nil); err != nil {
if err := getImagesViz(srv, API_VERSION, r, nil, nil); err != nil {
t.Fatal(err)
}
@ -258,7 +258,7 @@ func TestGetImagesSearch(t *testing.T) {
t.Fatal(err)
}
if err := getImagesSearch(srv, r, req, nil); err != nil {
if err := getImagesSearch(srv, API_VERSION, r, req, nil); err != nil {
t.Fatal(err)
}
@ -282,7 +282,7 @@ func TestGetImagesHistory(t *testing.T) {
r := httptest.NewRecorder()
if err := getImagesHistory(srv, r, nil, map[string]string{"name": unitTestImageName}); err != nil {
if err := getImagesHistory(srv, API_VERSION, r, nil, map[string]string{"name": unitTestImageName}); err != nil {
t.Fatal(err)
}
@ -305,7 +305,7 @@ func TestGetImagesByName(t *testing.T) {
srv := &Server{runtime: runtime}
r := httptest.NewRecorder()
if err := getImagesByName(srv, r, nil, map[string]string{"name": unitTestImageName}); err != nil {
if err := getImagesByName(srv, API_VERSION, r, nil, map[string]string{"name": unitTestImageName}); err != nil {
t.Fatal(err)
}
@ -342,7 +342,7 @@ func TestGetContainersPs(t *testing.T) {
}
r := httptest.NewRecorder()
if err := getContainersPs(srv, r, req, nil); err != nil {
if err := getContainersPs(srv, API_VERSION, r, req, nil); err != nil {
t.Fatal(err)
}
containers := []ApiContainers{}
@ -385,7 +385,7 @@ func TestGetContainersExport(t *testing.T) {
}
r := httptest.NewRecorder()
if err = getContainersExport(srv, r, nil, map[string]string{"name": container.Id}); err != nil {
if err = getContainersExport(srv, API_VERSION, r, nil, map[string]string{"name": container.Id}); err != nil {
t.Fatal(err)
}
@ -440,7 +440,7 @@ func TestGetContainersChanges(t *testing.T) {
}
r := httptest.NewRecorder()
if err := getContainersChanges(srv, r, nil, map[string]string{"name": container.Id}); err != nil {
if err := getContainersChanges(srv, API_VERSION, r, nil, map[string]string{"name": container.Id}); err != nil {
t.Fatal(err)
}
changes := []Change{}
@ -484,7 +484,7 @@ func TestGetContainersByName(t *testing.T) {
defer runtime.Destroy(container)
r := httptest.NewRecorder()
if err := getContainersByName(srv, r, nil, map[string]string{"name": container.Id}); err != nil {
if err := getContainersByName(srv, API_VERSION, r, nil, map[string]string{"name": container.Id}); err != nil {
t.Fatal(err)
}
outContainer := &Container{}
@ -515,7 +515,7 @@ func TestPostAuth(t *testing.T) {
srv.registry.ResetClient(authConfigOrig)
r := httptest.NewRecorder()
if err := getAuth(srv, r, nil, nil); err != nil {
if err := getAuth(srv, API_VERSION, r, nil, nil); err != nil {
t.Fatal(err)
}
@ -562,7 +562,7 @@ func TestPostCommit(t *testing.T) {
}
r := httptest.NewRecorder()
if err := postCommit(srv, r, req, nil); err != nil {
if err := postCommit(srv, API_VERSION, r, req, nil); err != nil {
t.Fatal(err)
}
if r.Code != http.StatusCreated {
@ -840,7 +840,7 @@ func TestPostContainersCreate(t *testing.T) {
}
r := httptest.NewRecorder()
if err := postContainersCreate(srv, r, req, nil); err != nil {
if err := postContainersCreate(srv, API_VERSION, r, req, nil); err != nil {
t.Fatal(err)
}
if r.Code != http.StatusCreated {
@ -903,7 +903,7 @@ func TestPostContainersKill(t *testing.T) {
}
r := httptest.NewRecorder()
if err := postContainersKill(srv, r, nil, map[string]string{"name": container.Id}); err != nil {
if err := postContainersKill(srv, API_VERSION, r, nil, map[string]string{"name": container.Id}); err != nil {
t.Fatal(err)
}
if r.Code != http.StatusNoContent {
@ -951,7 +951,7 @@ func TestPostContainersRestart(t *testing.T) {
t.Fatal(err)
}
r := httptest.NewRecorder()
if err := postContainersRestart(srv, r, req, map[string]string{"name": container.Id}); err != nil {
if err := postContainersRestart(srv, API_VERSION, r, req, map[string]string{"name": container.Id}); err != nil {
t.Fatal(err)
}
if r.Code != http.StatusNoContent {
@ -992,7 +992,7 @@ func TestPostContainersStart(t *testing.T) {
defer runtime.Destroy(container)
r := httptest.NewRecorder()
if err := postContainersStart(srv, r, nil, map[string]string{"name": container.Id}); err != nil {
if err := postContainersStart(srv, API_VERSION, r, nil, map[string]string{"name": container.Id}); err != nil {
t.Fatal(err)
}
if r.Code != http.StatusNoContent {
@ -1007,7 +1007,7 @@ func TestPostContainersStart(t *testing.T) {
}
r = httptest.NewRecorder()
if err = postContainersStart(srv, r, nil, map[string]string{"name": container.Id}); err == nil {
if err = postContainersStart(srv, API_VERSION, r, nil, map[string]string{"name": container.Id}); err == nil {
t.Fatalf("A running containter should be able to be started")
}
@ -1054,7 +1054,7 @@ func TestPostContainersStop(t *testing.T) {
t.Fatal(err)
}
r := httptest.NewRecorder()
if err := postContainersStop(srv, r, req, map[string]string{"name": container.Id}); err != nil {
if err := postContainersStop(srv, API_VERSION, r, req, map[string]string{"name": container.Id}); err != nil {
t.Fatal(err)
}
if r.Code != http.StatusNoContent {
@ -1092,7 +1092,7 @@ func TestPostContainersWait(t *testing.T) {
setTimeout(t, "Wait timed out", 3*time.Second, func() {
r := httptest.NewRecorder()
if err := postContainersWait(srv, r, nil, map[string]string{"name": container.Id}); err != nil {
if err := postContainersWait(srv, API_VERSION, r, nil, map[string]string{"name": container.Id}); err != nil {
t.Fatal(err)
}
apiWait := &ApiWait{}
@ -1154,7 +1154,7 @@ func TestPostContainersAttach(t *testing.T) {
t.Fatal(err)
}
if err := postContainersAttach(srv, r, req, map[string]string{"name": container.Id}); err != nil {
if err := postContainersAttach(srv, API_VERSION, r, req, map[string]string{"name": container.Id}); err != nil {
t.Fatal(err)
}
}()
@ -1224,7 +1224,7 @@ func TestDeleteContainers(t *testing.T) {
t.Fatal(err)
}
r := httptest.NewRecorder()
if err := deleteContainers(srv, r, req, map[string]string{"name": container.Id}); err != nil {
if err := deleteContainers(srv, API_VERSION, r, req, map[string]string{"name": container.Id}); err != nil {
t.Fatal(err)
}
if r.Code != http.StatusNoContent {

10
commands.go
View file

@ -1167,7 +1167,7 @@ func (cli *DockerCli) call(method, path string, data interface{}) ([]byte, int,
params = bytes.NewBuffer(buf)
}
req, err := http.NewRequest(method, fmt.Sprintf("http://%s:%d", cli.host, cli.port)+path, params)
req, err := http.NewRequest(method, fmt.Sprintf("http://%s:%d/v%f", cli.host, cli.port, API_VERSION)+path, params)
if err != nil {
return nil, -1, err
}
@ -1199,7 +1199,7 @@ func (cli *DockerCli) stream(method, path string, in io.Reader, out io.Writer) e
if (method == "POST" || method == "PUT") && in == nil {
in = bytes.NewReader([]byte{})
}
req, err := http.NewRequest(method, fmt.Sprintf("http://%s:%d%s", cli.host, cli.port, path), in)
req, err := http.NewRequest(method, fmt.Sprintf("http://%s:%d/v%f%s", cli.host, cli.port, API_VERSION, path), in)
if err != nil {
return err
}
@ -1230,7 +1230,7 @@ func (cli *DockerCli) stream(method, path string, in io.Reader, out io.Writer) e
}
func (cli *DockerCli) hijack(method, path string, setRawTerminal bool) error {
req, err := http.NewRequest(method, path, nil)
req, err := http.NewRequest(method, fmt.Sprintf("/v%f%s", API_VERSION, path), nil)
if err != nil {
return err
}
@ -1294,6 +1294,6 @@ func NewDockerCli(host string, port int) *DockerCli {
}
type DockerCli struct {
host string
port int
host string
port int
}