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moby--moby/graph/import.go

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package graph
import (
"io"
"net/http"
"net/url"
"github.com/docker/docker/pkg/httputils"
"github.com/docker/docker/pkg/progressreader"
"github.com/docker/docker/pkg/streamformatter"
"github.com/docker/docker/runconfig"
"github.com/docker/docker/utils"
)
// 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
}