// Push initiates a push operation on the repository named localName.
func (s *TagStore) Push(localName string, imagePushConfig *ImagePushConfig) error {
// FIXME: Allow to interrupt current push when new push of same image is done.
var sf = streamformatter.NewJSONStreamFormatter()
// Resolve the Repository name from fqn to RepositoryInfo
repoInfo, err := s.registryService.ResolveRepository(localName)
if err != nil {
return err
}
endpoints, err := s.registryService.LookupPushEndpoints(repoInfo.CanonicalName)
if err != nil {
return err
}
reposLen := 1
if imagePushConfig.Tag == "" {
reposLen = len(s.Repositories[repoInfo.LocalName])
}
imagePushConfig.OutStream.Write(sf.FormatStatus("", "The push refers to a repository [%s] (len: %d)", repoInfo.CanonicalName, reposLen))
// If it fails, try to get the repository
localRepo, exists := s.Repositories[repoInfo.LocalName]
if !exists {
return fmt.Errorf("Repository does not exist: %s", repoInfo.LocalName)
}
var lastErr error
for _, endpoint := range endpoints {
logrus.Debugf("Trying to push %s to %s %s", repoInfo.CanonicalName, endpoint.URL, endpoint.Version)
pusher, err := s.NewPusher(endpoint, localRepo, repoInfo, imagePushConfig, sf)
if err != nil {
lastErr = err
continue
}
if fallback, err := pusher.Push(); err != nil {
if fallback {
lastErr = err
continue
}
logrus.Debugf("Not continuing with error: %v", err)
return err
}
s.eventsService.Log("push", repoInfo.LocalName, "")
return nil
}
if lastErr == nil {
lastErr = fmt.Errorf("no endpoints found for %s", repoInfo.CanonicalName)
}
return lastErr
}
// Pull initiates a pull operation. image is the repository name to pull, and
// tag may be either empty, or indicate a specific tag to pull.
func (s *TagStore) Pull(image string, tag string, imagePullConfig *ImagePullConfig) error {
var sf = streamformatter.NewJSONStreamFormatter()
// Resolve the Repository name from fqn to RepositoryInfo
repoInfo, err := s.registryService.ResolveRepository(image)
if err != nil {
return err
}
// makes sure name is not empty or `scratch`
if err := validateRepoName(repoInfo.LocalName); err != nil {
return err
}
endpoints, err := s.registryService.LookupPullEndpoints(repoInfo.CanonicalName)
if err != nil {
return err
}
logName := repoInfo.LocalName
if tag != "" {
logName = utils.ImageReference(logName, tag)
}
var (
lastErr error
// discardNoSupportErrors is used to track whether an endpoint encountered an error of type registry.ErrNoSupport
// By default it is false, which means that if a ErrNoSupport error is encountered, it will be saved in lastErr.
// As soon as another kind of error is encountered, discardNoSupportErrors is set to true, avoiding the saving of
// any subsequent ErrNoSupport errors in lastErr.
// It's needed for pull-by-digest on v1 endpoints: if there are only v1 endpoints configured, the error should be
// returned and displayed, but if there was a v2 endpoint which supports pull-by-digest, then the last relevant
// error is the ones from v2 endpoints not v1.
discardNoSupportErrors bool
)
for _, endpoint := range endpoints {
logrus.Debugf("Trying to pull %s from %s %s", repoInfo.LocalName, endpoint.URL, endpoint.Version)
puller, err := NewPuller(s, endpoint, repoInfo, imagePullConfig, sf)
if err != nil {
lastErr = err
continue
}
if fallback, err := puller.Pull(tag); err != nil {
if fallback {
if _, ok := err.(registry.ErrNoSupport); !ok {
// Because we found an error that's not ErrNoSupport, discard all subsequent ErrNoSupport errors.
discardNoSupportErrors = true
// save the current error
lastErr = err
} else if !discardNoSupportErrors {
// Save the ErrNoSupport error, because it's either the first error or all encountered errors
// were also ErrNoSupport errors.
lastErr = err
}
continue
}
logrus.Debugf("Not continuing with error: %v", err)
return err
}
s.eventsService.Log("pull", logName, "")
return nil
}
if lastErr == nil {
lastErr = fmt.Errorf("no endpoints found for %s", image)
}
return lastErr
}
// Import imports an image, getting the archived layer data either from
// inConfig (if src is "-"), or from a URI specified in src. Progress output is
// written to outStream. Repository and tag names can optionally be given in
// the repo and tag arguments, respectively.
func (s *TagStore) Import(src string, repo string, tag string, msg string, inConfig io.ReadCloser, outStream io.Writer, containerConfig *runconfig.Config) error {
var (
sf = streamformatter.NewJSONStreamFormatter()
archive io.ReadCloser
resp *http.Response
)
if src == "-" {
archive = inConfig
} else {
inConfig.Close()
u, err := url.Parse(src)
if err != nil {
return err
}
if u.Scheme == "" {
u.Scheme = "http"
u.Host = src
u.Path = ""
}
outStream.Write(sf.FormatStatus("", "Downloading from %s", u))
resp, err = httputils.Download(u.String())
if err != nil {
return err
}
progressReader := progressreader.New(progressreader.Config{
In: resp.Body,
Out: outStream,
Formatter: sf,
Size: resp.ContentLength,
NewLines: true,
ID: "",
Action: "Importing",
})
archive = progressReader
}
defer archive.Close()
if len(msg) == 0 {
msg = "Imported from " + src
}
img, err := s.graph.Create(archive, "", "", msg, "", nil, containerConfig)
if err != nil {
return err
}
// Optionally register the image at REPO/TAG
if repo != "" {
if err := s.Tag(repo, tag, img.ID, true); err != nil {
return err
}
}
outStream.Write(sf.FormatStatus("", img.ID))
logID := img.ID
if tag != "" {
logID = utils.ImageReference(logID, tag)
}
s.eventsService.Log("import", logID, "")
return nil
}
