2013-05-15 05:41:39 +04:00
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package registry
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import (
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2013-05-15 07:27:15 +04:00
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"bytes"
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"encoding/json"
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"errors"
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2013-05-15 05:41:39 +04:00
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"fmt"
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"github.com/dotcloud/docker/auth"
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"github.com/dotcloud/docker/utils"
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"github.com/shin-/cookiejar"
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"io"
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"io/ioutil"
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"net/http"
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"net/url"
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"strings"
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)
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2013-05-16 00:22:57 +04:00
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var ErrAlreadyExists error = errors.New("Image already exists")
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2013-05-15 05:41:39 +04:00
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func doWithCookies(c *http.Client, req *http.Request) (*http.Response, error) {
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for _, cookie := range c.Jar.Cookies(req.URL) {
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req.AddCookie(cookie)
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}
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return c.Do(req)
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}
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// Retrieve the history of a given image from the Registry.
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// Return a list of the parent's json (requested image included)
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func (r *Registry) GetRemoteHistory(imgId, registry string, token []string) ([]string, error) {
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req, err := http.NewRequest("GET", registry+"/images/"+imgId+"/ancestry", nil)
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if err != nil {
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return nil, err
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}
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req.Header.Set("Authorization", "Token "+strings.Join(token, ", "))
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res, err := r.client.Do(req)
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if err != nil || res.StatusCode != 200 {
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if res != nil {
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return nil, fmt.Errorf("Internal server error: %d trying to fetch remote history for %s", res.StatusCode, imgId)
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}
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return nil, err
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}
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defer res.Body.Close()
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jsonString, err := ioutil.ReadAll(res.Body)
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if err != nil {
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return nil, fmt.Errorf("Error while reading the http response: %s", err)
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}
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utils.Debugf("Ancestry: %s", jsonString)
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history := new([]string)
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if err := json.Unmarshal(jsonString, history); err != nil {
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return nil, err
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}
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return *history, nil
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}
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// Check if an image exists in the Registry
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func (r *Registry) LookupRemoteImage(imgId, registry string, authConfig *auth.AuthConfig) bool {
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rt := &http.Transport{Proxy: http.ProxyFromEnvironment}
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req, err := http.NewRequest("GET", registry+"/images/"+imgId+"/json", nil)
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if err != nil {
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return false
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}
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req.SetBasicAuth(authConfig.Username, authConfig.Password)
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res, err := rt.RoundTrip(req)
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return err == nil && res.StatusCode == 307
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}
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func (r *Registry) getImagesInRepository(repository string, authConfig *auth.AuthConfig) ([]map[string]string, error) {
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u := auth.IndexServerAddress() + "/repositories/" + repository + "/images"
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req, err := http.NewRequest("GET", u, nil)
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if err != nil {
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return nil, err
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}
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if authConfig != nil && len(authConfig.Username) > 0 {
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req.SetBasicAuth(authConfig.Username, authConfig.Password)
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}
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res, err := r.client.Do(req)
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if err != nil {
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return nil, err
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}
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defer res.Body.Close()
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// Repository doesn't exist yet
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if res.StatusCode == 404 {
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return nil, nil
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}
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jsonData, err := ioutil.ReadAll(res.Body)
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if err != nil {
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return nil, err
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}
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imageList := []map[string]string{}
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if err := json.Unmarshal(jsonData, &imageList); err != nil {
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utils.Debugf("Body: %s (%s)\n", res.Body, u)
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return nil, err
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}
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return imageList, nil
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}
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// Retrieve an image from the Registry.
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// Returns the Image object as well as the layer as an Archive (io.Reader)
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func (r *Registry) GetRemoteImageJson(imgId, registry string, token []string) ([]byte, error) {
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// Get the Json
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req, err := http.NewRequest("GET", registry+"/images/"+imgId+"/json", nil)
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if err != nil {
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return nil, fmt.Errorf("Failed to download json: %s", err)
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}
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req.Header.Set("Authorization", "Token "+strings.Join(token, ", "))
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res, err := r.client.Do(req)
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if err != nil {
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return nil, fmt.Errorf("Failed to download json: %s", err)
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}
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defer res.Body.Close()
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if res.StatusCode != 200 {
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return nil, fmt.Errorf("HTTP code %d", res.StatusCode)
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}
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jsonString, err := ioutil.ReadAll(res.Body)
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if err != nil {
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return nil, fmt.Errorf("Failed to parse downloaded json: %s (%s)", err, jsonString)
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}
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return jsonString, nil
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}
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2013-05-15 22:50:52 +04:00
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func (r *Registry) GetRemoteImageLayer(imgId, registry string, token []string) (io.ReadCloser, int, error) {
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req, err := http.NewRequest("GET", registry+"/images/"+imgId+"/layer", nil)
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if err != nil {
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return nil, -1, fmt.Errorf("Error while getting from the server: %s\n", err)
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}
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req.Header.Set("Authorization", "Token "+strings.Join(token, ", "))
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res, err := r.client.Do(req)
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if err != nil {
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return nil, -1, err
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}
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return res.Body, int(res.ContentLength), nil
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2013-05-15 05:41:39 +04:00
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}
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2013-05-15 22:50:52 +04:00
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func (r *Registry) GetRemoteTags(registries []string, repository string, token []string) (map[string]string, error) {
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2013-05-15 05:41:39 +04:00
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if strings.Count(repository, "/") == 0 {
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// This will be removed once the Registry supports auto-resolution on
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// the "library" namespace
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repository = "library/" + repository
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}
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for _, host := range registries {
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endpoint := fmt.Sprintf("https://%s/v1/repositories/%s/tags", host, repository)
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req, err := http.NewRequest("GET", endpoint, nil)
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if err != nil {
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return nil, err
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}
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req.Header.Set("Authorization", "Token "+strings.Join(token, ", "))
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res, err := r.client.Do(req)
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defer res.Body.Close()
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utils.Debugf("Got status code %d from %s", res.StatusCode, endpoint)
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if err != nil || (res.StatusCode != 200 && res.StatusCode != 404) {
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continue
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} else if res.StatusCode == 404 {
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return nil, fmt.Errorf("Repository not found")
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}
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result := make(map[string]string)
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rawJson, err := ioutil.ReadAll(res.Body)
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if err != nil {
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return nil, err
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}
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if err := json.Unmarshal(rawJson, &result); err != nil {
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return nil, err
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}
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return result, nil
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}
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return nil, fmt.Errorf("Could not reach any registry endpoint")
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}
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func (r *Registry) GetRepositoryData(remote string) (*RepositoryData, error) {
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repositoryTarget := auth.IndexServerAddress() + "/repositories/" + remote + "/images"
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req, err := http.NewRequest("GET", repositoryTarget, nil)
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if err != nil {
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return nil, err
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}
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if r.authConfig != nil && len(r.authConfig.Username) > 0 {
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req.SetBasicAuth(r.authConfig.Username, r.authConfig.Password)
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}
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req.Header.Set("X-Docker-Token", "true")
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2013-05-15 23:22:08 +04:00
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res, err := r.client.Do(req)
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if err != nil {
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return nil, err
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}
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defer res.Body.Close()
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if res.StatusCode == 401 {
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return nil, fmt.Errorf("Please login first (HTTP code %d)", res.StatusCode)
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}
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// TODO: Right now we're ignoring checksums in the response body.
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// In the future, we need to use them to check image validity.
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if res.StatusCode != 200 {
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return nil, fmt.Errorf("HTTP code: %d", res.StatusCode)
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}
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var tokens []string
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if res.Header.Get("X-Docker-Token") != "" {
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tokens = res.Header["X-Docker-Token"]
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}
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var endpoints []string
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if res.Header.Get("X-Docker-Endpoints") != "" {
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endpoints = res.Header["X-Docker-Endpoints"]
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} else {
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return nil, fmt.Errorf("Index response didn't contain any endpoints")
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}
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checksumsJson, err := ioutil.ReadAll(res.Body)
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if err != nil {
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return nil, err
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}
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remoteChecksums := []*ImgData{}
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if err := json.Unmarshal(checksumsJson, &remoteChecksums); err != nil {
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return nil, err
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}
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// Forge a better object from the retrieved data
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imgsData := make(map[string]*ImgData)
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for _, elem := range remoteChecksums {
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imgsData[elem.Id] = elem
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}
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return &RepositoryData{
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ImgList: imgsData,
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Endpoints: endpoints,
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Tokens: tokens,
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}, nil
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}
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2013-05-15 07:27:15 +04:00
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// Push a local image to the registry
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2013-05-15 22:30:40 +04:00
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func (r *Registry) PushImageJsonRegistry(imgData *ImgData, jsonRaw []byte, registry string, token []string) error {
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2013-05-15 07:27:15 +04:00
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registry = "https://" + registry + "/v1"
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// FIXME: try json with UTF8
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req, err := http.NewRequest("PUT", registry+"/images/"+imgData.Id+"/json", strings.NewReader(string(jsonRaw)))
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if err != nil {
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return err
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}
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req.Header.Add("Content-type", "application/json")
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req.Header.Set("Authorization", "Token "+strings.Join(token, ","))
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req.Header.Set("X-Docker-Checksum", imgData.Checksum)
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2013-05-15 07:27:15 +04:00
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utils.Debugf("Setting checksum for %s: %s", imgData.Id, imgData.Checksum)
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2013-05-15 23:22:08 +04:00
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res, err := doWithCookies(r.client, req)
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2013-05-15 07:27:15 +04:00
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if err != nil {
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return fmt.Errorf("Failed to upload metadata: %s", err)
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}
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defer res.Body.Close()
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if len(res.Cookies()) > 0 {
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2013-05-15 23:22:08 +04:00
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r.client.Jar.SetCookies(req.URL, res.Cookies())
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2013-05-15 07:27:15 +04:00
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}
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if res.StatusCode != 200 {
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errBody, err := ioutil.ReadAll(res.Body)
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if err != nil {
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return fmt.Errorf("HTTP code %d while uploading metadata and error when trying to parse response body: %s", res.StatusCode, err)
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2013-05-15 07:27:15 +04:00
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}
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var jsonBody map[string]string
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if err := json.Unmarshal(errBody, &jsonBody); err != nil {
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errBody = []byte(err.Error())
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} else if jsonBody["error"] == "Image already exists" {
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2013-05-16 00:22:57 +04:00
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return ErrAlreadyExists
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2013-05-15 07:27:15 +04:00
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}
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return fmt.Errorf("HTTP code %d while uploading metadata: %s", res.StatusCode, errBody)
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}
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2013-05-15 22:30:40 +04:00
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return nil
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}
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2013-05-15 07:27:15 +04:00
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2013-05-15 22:30:40 +04:00
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func (r *Registry) PushImageLayerRegistry(imgId string, layer io.Reader, registry string, token []string) error {
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registry = "https://" + registry + "/v1"
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req, err := http.NewRequest("PUT", registry+"/images/"+imgId+"/layer", layer)
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2013-05-15 07:27:15 +04:00
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if err != nil {
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return err
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}
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2013-05-15 22:30:40 +04:00
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req.ContentLength = -1
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req.TransferEncoding = []string{"chunked"}
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req.Header.Set("Authorization", "Token "+strings.Join(token, ","))
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2013-05-15 23:22:08 +04:00
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res, err := doWithCookies(r.client, req)
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2013-05-15 07:27:15 +04:00
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if err != nil {
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return fmt.Errorf("Failed to upload layer: %s", err)
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}
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2013-05-15 22:30:40 +04:00
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defer res.Body.Close()
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2013-05-15 07:27:15 +04:00
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2013-05-15 22:30:40 +04:00
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if res.StatusCode != 200 {
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errBody, err := ioutil.ReadAll(res.Body)
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2013-05-15 07:27:15 +04:00
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if err != nil {
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2013-05-15 22:30:40 +04:00
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return fmt.Errorf("HTTP code %d while uploading metadata and error when trying to parse response body: %s", res.StatusCode, err)
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2013-05-15 07:27:15 +04:00
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}
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2013-05-15 22:30:40 +04:00
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return fmt.Errorf("Received HTTP code %d while uploading layer: %s", res.StatusCode, errBody)
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2013-05-15 07:27:15 +04:00
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}
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return nil
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}
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// push a tag on the registry.
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// Remote has the format '<user>/<repo>
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2013-05-15 22:30:40 +04:00
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func (r *Registry) PushRegistryTag(remote, revision, tag, registry string, token []string) error {
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2013-05-15 07:27:15 +04:00
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// "jsonify" the string
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revision = "\"" + revision + "\""
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registry = "https://" + registry + "/v1"
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req, err := http.NewRequest("PUT", registry+"/repositories/"+remote+"/tags/"+tag, strings.NewReader(revision))
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if err != nil {
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return err
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}
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req.Header.Add("Content-type", "application/json")
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req.Header.Set("Authorization", "Token "+strings.Join(token, ","))
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req.ContentLength = int64(len(revision))
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2013-05-15 23:22:08 +04:00
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res, err := doWithCookies(r.client, req)
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2013-05-15 07:27:15 +04:00
|
|
|
if err != nil {
|
|
|
|
return err
|
|
|
|
}
|
|
|
|
res.Body.Close()
|
|
|
|
if res.StatusCode != 200 && res.StatusCode != 201 {
|
|
|
|
return fmt.Errorf("Internal server error: %d trying to push tag %s on %s", res.StatusCode, tag, remote)
|
|
|
|
}
|
|
|
|
return nil
|
|
|
|
}
|
|
|
|
|
2013-05-15 22:30:40 +04:00
|
|
|
func (r *Registry) PushImageJsonIndex(remote string, imgList []*ImgData, validate bool) (*RepositoryData, error) {
|
2013-05-15 07:27:15 +04:00
|
|
|
imgListJson, err := json.Marshal(imgList)
|
|
|
|
if err != nil {
|
|
|
|
return nil, err
|
|
|
|
}
|
|
|
|
|
|
|
|
utils.Debugf("json sent: %s\n", imgListJson)
|
|
|
|
|
|
|
|
req, err := http.NewRequest("PUT", auth.IndexServerAddress()+"/repositories/"+remote+"/", bytes.NewReader(imgListJson))
|
|
|
|
if err != nil {
|
|
|
|
return nil, err
|
|
|
|
}
|
|
|
|
req.SetBasicAuth(r.authConfig.Username, r.authConfig.Password)
|
|
|
|
req.ContentLength = int64(len(imgListJson))
|
|
|
|
req.Header.Set("X-Docker-Token", "true")
|
|
|
|
|
2013-05-15 23:22:08 +04:00
|
|
|
res, err := r.client.Do(req)
|
2013-05-15 07:27:15 +04:00
|
|
|
if err != nil {
|
|
|
|
return nil, err
|
|
|
|
}
|
|
|
|
defer res.Body.Close()
|
|
|
|
|
|
|
|
// Redirect if necessary
|
|
|
|
for res.StatusCode >= 300 && res.StatusCode < 400 {
|
|
|
|
utils.Debugf("Redirected to %s\n", res.Header.Get("Location"))
|
|
|
|
req, err = http.NewRequest("PUT", res.Header.Get("Location"), bytes.NewReader(imgListJson))
|
|
|
|
if err != nil {
|
|
|
|
return nil, err
|
|
|
|
}
|
|
|
|
req.SetBasicAuth(r.authConfig.Username, r.authConfig.Password)
|
|
|
|
req.ContentLength = int64(len(imgListJson))
|
|
|
|
req.Header.Set("X-Docker-Token", "true")
|
|
|
|
|
2013-05-15 23:22:08 +04:00
|
|
|
res, err = r.client.Do(req)
|
2013-05-15 07:27:15 +04:00
|
|
|
if err != nil {
|
|
|
|
return nil, err
|
|
|
|
}
|
|
|
|
defer res.Body.Close()
|
|
|
|
}
|
|
|
|
|
|
|
|
if res.StatusCode != 200 && res.StatusCode != 201 {
|
|
|
|
errBody, err := ioutil.ReadAll(res.Body)
|
|
|
|
if err != nil {
|
|
|
|
return nil, err
|
|
|
|
}
|
|
|
|
return nil, fmt.Errorf("Error: Status %d trying to push repository %s: %s", res.StatusCode, remote, errBody)
|
|
|
|
}
|
|
|
|
|
|
|
|
var tokens []string
|
|
|
|
if res.Header.Get("X-Docker-Token") != "" {
|
|
|
|
tokens = res.Header["X-Docker-Token"]
|
|
|
|
utils.Debugf("Auth token: %v", tokens)
|
|
|
|
} else {
|
|
|
|
return nil, fmt.Errorf("Index response didn't contain an access token")
|
|
|
|
}
|
|
|
|
|
|
|
|
var endpoints []string
|
|
|
|
if res.Header.Get("X-Docker-Endpoints") != "" {
|
|
|
|
endpoints = res.Header["X-Docker-Endpoints"]
|
|
|
|
} else {
|
|
|
|
return nil, fmt.Errorf("Index response didn't contain any endpoints")
|
|
|
|
}
|
|
|
|
|
|
|
|
if validate {
|
|
|
|
if res.StatusCode != 204 {
|
|
|
|
if errBody, err := ioutil.ReadAll(res.Body); err != nil {
|
|
|
|
return nil, err
|
|
|
|
} else {
|
|
|
|
return nil, fmt.Errorf("Error: Status %d trying to push checksums %s: %s", res.StatusCode, remote, errBody)
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return &RepositoryData{
|
|
|
|
Tokens: tokens,
|
|
|
|
Endpoints: endpoints,
|
|
|
|
}, nil
|
|
|
|
}
|
2013-05-15 05:41:39 +04:00
|
|
|
|
2013-05-15 22:50:52 +04:00
|
|
|
func (r *Registry) SearchRepositories(term string) (*SearchResults, error) {
|
2013-05-15 05:41:39 +04:00
|
|
|
u := auth.IndexServerAddress() + "/search?q=" + url.QueryEscape(term)
|
|
|
|
req, err := http.NewRequest("GET", u, nil)
|
|
|
|
if err != nil {
|
|
|
|
return nil, err
|
|
|
|
}
|
2013-05-15 23:22:08 +04:00
|
|
|
res, err := r.client.Do(req)
|
2013-05-15 05:41:39 +04:00
|
|
|
if err != nil {
|
|
|
|
return nil, err
|
|
|
|
}
|
|
|
|
defer res.Body.Close()
|
|
|
|
if res.StatusCode != 200 {
|
|
|
|
return nil, fmt.Errorf("Unexepected status code %d", res.StatusCode)
|
|
|
|
}
|
|
|
|
rawData, err := ioutil.ReadAll(res.Body)
|
|
|
|
if err != nil {
|
|
|
|
return nil, err
|
|
|
|
}
|
|
|
|
result := new(SearchResults)
|
|
|
|
err = json.Unmarshal(rawData, result)
|
|
|
|
return result, err
|
|
|
|
}
|
|
|
|
|
2013-05-16 00:39:24 +04:00
|
|
|
func (r *Registry) ResetClient(authConfig *auth.AuthConfig) {
|
|
|
|
r.authConfig = authConfig
|
|
|
|
r.client.Jar = cookiejar.NewCookieJar()
|
|
|
|
}
|
|
|
|
|
2013-05-16 04:17:33 +04:00
|
|
|
func (r *Registry) GetAuthConfig() *auth.AuthConfig {
|
|
|
|
return &auth.AuthConfig{
|
|
|
|
Username: r.authConfig.Username,
|
2013-05-16 04:31:11 +04:00
|
|
|
Email: r.authConfig.Email,
|
2013-05-16 04:17:33 +04:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2013-05-15 05:41:39 +04:00
|
|
|
type SearchResults struct {
|
|
|
|
Query string `json:"query"`
|
|
|
|
NumResults int `json:"num_results"`
|
|
|
|
Results []map[string]string `json:"results"`
|
|
|
|
}
|
|
|
|
|
|
|
|
type RepositoryData struct {
|
|
|
|
ImgList map[string]*ImgData
|
|
|
|
Endpoints []string
|
|
|
|
Tokens []string
|
|
|
|
}
|
|
|
|
|
|
|
|
type ImgData struct {
|
|
|
|
Id string `json:"id"`
|
|
|
|
Checksum string `json:"checksum,omitempty"`
|
|
|
|
Tag string `json:",omitempty"`
|
|
|
|
}
|
|
|
|
|
|
|
|
type Registry struct {
|
2013-05-15 23:22:08 +04:00
|
|
|
client *http.Client
|
2013-05-15 05:41:39 +04:00
|
|
|
authConfig *auth.AuthConfig
|
|
|
|
}
|
|
|
|
|
2013-05-16 04:17:33 +04:00
|
|
|
func NewRegistry(root string) *Registry {
|
|
|
|
// If the auth file does not exist, keep going
|
|
|
|
authConfig, _ := auth.LoadConfig(root)
|
|
|
|
|
2013-05-15 23:22:08 +04:00
|
|
|
r := &Registry{
|
2013-05-15 05:41:39 +04:00
|
|
|
authConfig: authConfig,
|
2013-05-15 23:22:08 +04:00
|
|
|
client: &http.Client{},
|
2013-05-15 05:41:39 +04:00
|
|
|
}
|
2013-05-15 23:22:08 +04:00
|
|
|
r.client.Jar = cookiejar.NewCookieJar()
|
|
|
|
return r
|
2013-05-15 05:41:39 +04:00
|
|
|
}
|