本文整理汇总了Golang中github.com/docker/docker/registry.Session.Close方法的典型用法代码示例。如果您正苦于以下问题：Golang Session.Close方法的具体用法？Golang Session.Close怎么用？Golang Session.Close使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类github.com/docker/docker/registry.Session的用法示例。
在下文中一共展示了Session.Close方法的4个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Golang代码示例。
示例1: pullV2Tag
func (s *TagStore) pullV2Tag(eng *engine.Engine, r *registry.Session, out io.Writer, endpoint *registry.Endpoint, repoInfo *registry.RepositoryInfo, tag string, sf *utils.StreamFormatter, parallel bool, auth *registry.RequestAuthorization) (bool, error) {
log.Debugf("Pulling tag from V2 registry: %q", tag)
manifestBytes, err := r.GetV2ImageManifest(endpoint, repoInfo.RemoteName, tag, auth)
if err != nil {
return false, err
}
manifest, verified, err := s.loadManifest(eng, manifestBytes)
if err != nil {
return false, fmt.Errorf("error verifying manifest: %s", err)
}
if err := checkValidManifest(manifest); err != nil {
return false, err
}
if verified {
log.Printf("Image manifest for %s:%s has been verified", repoInfo.CanonicalName, tag)
} else {
out.Write(sf.FormatStatus(tag, "Pulling from %s", repoInfo.CanonicalName))
}
downloads := make([]downloadInfo, len(manifest.FSLayers))
for i := len(manifest.FSLayers) - 1; i >= 0; i-- {
var (
sumStr = manifest.FSLayers[i].BlobSum
imgJSON = []byte(manifest.History[i].V1Compatibility)
)
img, err := image.NewImgJSON(imgJSON)
if err != nil {
return false, fmt.Errorf("failed to parse json: %s", err)
}
downloads[i].img = img
// Check if exists
if s.graph.Exists(img.ID) {
log.Debugf("Image already exists: %s", img.ID)
continue
}
chunks := strings.SplitN(sumStr, ":", 2)
if len(chunks) < 2 {
return false, fmt.Errorf("expected 2 parts in the sumStr, got %#v", chunks)
}
sumType, checksum := chunks[0], chunks[1]
out.Write(sf.FormatProgress(utils.TruncateID(img.ID), "Pulling fs layer", nil))
downloadFunc := func(di *downloadInfo) error {
log.Debugf("pulling blob %q to V1 img %s", sumStr, img.ID)
if c, err := s.poolAdd("pull", "img:"+img.ID); err != nil {
if c != nil {
out.Write(sf.FormatProgress(utils.TruncateID(img.ID), "Layer already being pulled by another client. Waiting.", nil))
<-c
out.Write(sf.FormatProgress(utils.TruncateID(img.ID), "Download complete", nil))
} else {
log.Debugf("Image (id: %s) pull is already running, skipping: %v", img.ID, err)
}
} else {
defer s.poolRemove("pull", "img:"+img.ID)
tmpFile, err := ioutil.TempFile("", "GetV2ImageBlob")
if err != nil {
return err
}
r, l, err := r.GetV2ImageBlobReader(endpoint, repoInfo.RemoteName, sumType, checksum, auth)
if err != nil {
return err
}
defer r.Close()
// Wrap the reader with the appropriate TarSum reader.
tarSumReader, err := tarsum.NewTarSumForLabel(r, true, sumType)
if err != nil {
return fmt.Errorf("unable to wrap image blob reader with TarSum: %s", err)
}
io.Copy(tmpFile, utils.ProgressReader(ioutil.NopCloser(tarSumReader), int(l), out, sf, false, utils.TruncateID(img.ID), "Downloading"))
out.Write(sf.FormatProgress(utils.TruncateID(img.ID), "Verifying Checksum", nil))
if finalChecksum := tarSumReader.Sum(nil); !strings.EqualFold(finalChecksum, sumStr) {
return fmt.Errorf("image verification failed: checksum mismatch - expected %q but got %q", sumStr, finalChecksum)
}
out.Write(sf.FormatProgress(utils.TruncateID(img.ID), "Download complete", nil))
log.Debugf("Downloaded %s to tempfile %s", img.ID, tmpFile.Name())
di.tmpFile = tmpFile
di.length = l
di.downloaded = true
}
di.imgJSON = imgJSON
return nil
}
if parallel {
//.........这里部分代码省略.........
示例2: pullV2Tag
func (s *TagStore) pullV2Tag(r *registry.Session, out io.Writer, endpoint *registry.Endpoint, repoInfo *registry.RepositoryInfo, tag string, sf *streamformatter.StreamFormatter, auth *registry.RequestAuthorization) (bool, error) {
logrus.Debugf("Pulling tag from V2 registry: %q", tag)
remoteDigest, manifestBytes, err := r.GetV2ImageManifest(endpoint, repoInfo.RemoteName, tag, auth)
if err != nil {
return false, err
}
// loadManifest ensures that the manifest payload has the expected digest
// if the tag is a digest reference.
localDigest, manifest, verified, err := s.loadManifest(manifestBytes, tag, remoteDigest)
if err != nil {
return false, fmt.Errorf("error verifying manifest: %s", err)
}
if verified {
logrus.Printf("Image manifest for %s has been verified", utils.ImageReference(repoInfo.CanonicalName, tag))
}
out.Write(sf.FormatStatus(tag, "Pulling from %s", repoInfo.CanonicalName))
// downloadInfo is used to pass information from download to extractor
type downloadInfo struct {
imgJSON []byte
img *image.Image
digest digest.Digest
tmpFile *os.File
length int64
downloaded bool
err chan error
}
downloads := make([]downloadInfo, len(manifest.FSLayers))
for i := len(manifest.FSLayers) - 1; i >= 0; i-- {
var (
sumStr = manifest.FSLayers[i].BlobSum
imgJSON = []byte(manifest.History[i].V1Compatibility)
)
img, err := image.NewImgJSON(imgJSON)
if err != nil {
return false, fmt.Errorf("failed to parse json: %s", err)
}
downloads[i].img = img
// Check if exists
if s.graph.Exists(img.ID) {
logrus.Debugf("Image already exists: %s", img.ID)
continue
}
dgst, err := digest.ParseDigest(sumStr)
if err != nil {
return false, err
}
downloads[i].digest = dgst
out.Write(sf.FormatProgress(stringid.TruncateID(img.ID), "Pulling fs layer", nil))
downloadFunc := func(di *downloadInfo) error {
logrus.Debugf("pulling blob %q to V1 img %s", sumStr, img.ID)
if c, err := s.poolAdd("pull", "img:"+img.ID); err != nil {
if c != nil {
out.Write(sf.FormatProgress(stringid.TruncateID(img.ID), "Layer already being pulled by another client. Waiting.", nil))
<-c
out.Write(sf.FormatProgress(stringid.TruncateID(img.ID), "Download complete", nil))
} else {
logrus.Debugf("Image (id: %s) pull is already running, skipping: %v", img.ID, err)
}
} else {
defer s.poolRemove("pull", "img:"+img.ID)
tmpFile, err := ioutil.TempFile("", "GetV2ImageBlob")
if err != nil {
return err
}
r, l, err := r.GetV2ImageBlobReader(endpoint, repoInfo.RemoteName, di.digest, auth)
if err != nil {
return err
}
defer r.Close()
verifier, err := digest.NewDigestVerifier(di.digest)
if err != nil {
return err
}
if _, err := io.Copy(tmpFile, progressreader.New(progressreader.Config{
In: ioutil.NopCloser(io.TeeReader(r, verifier)),
Out: out,
Formatter: sf,
Size: int(l),
NewLines: false,
ID: stringid.TruncateID(img.ID),
Action: "Downloading",
})); err != nil {
return fmt.Errorf("unable to copy v2 image blob data: %s", err)
}
//.........这里部分代码省略.........
示例3: pullV2Tag
func (s *TagStore) pullV2Tag(eng *engine.Engine, r *registry.Session, out io.Writer, localName, remoteName, tag string, sf *utils.StreamFormatter, parallel bool) (bool, error) {
log.Debugf("Pulling tag from V2 registry: %q", tag)
manifestBytes, err := r.GetV2ImageManifest(remoteName, tag, nil)
if err != nil {
return false, err
}
manifest, verified, err := s.verifyManifest(eng, manifestBytes)
if err != nil {
return false, fmt.Errorf("error verifying manifest: %s", err)
}
if len(manifest.FSLayers) != len(manifest.History) {
return false, fmt.Errorf("length of history not equal to number of layers")
}
if verified {
out.Write(sf.FormatStatus(localName+":"+tag, "The image you are pulling has been verified"))
} else {
out.Write(sf.FormatStatus(tag, "Pulling from %s", localName))
}
if len(manifest.FSLayers) == 0 {
return false, fmt.Errorf("no blobSums in manifest")
}
downloads := make([]downloadInfo, len(manifest.FSLayers))
for i := len(manifest.FSLayers) - 1; i >= 0; i-- {
var (
sumStr = manifest.FSLayers[i].BlobSum
imgJSON = []byte(manifest.History[i].V1Compatibility)
)
img, err := image.NewImgJSON(imgJSON)
if err != nil {
return false, fmt.Errorf("failed to parse json: %s", err)
}
downloads[i].img = img
// Check if exists
if s.graph.Exists(img.ID) {
log.Debugf("Image already exists: %s", img.ID)
continue
}
chunks := strings.SplitN(sumStr, ":", 2)
if len(chunks) < 2 {
return false, fmt.Errorf("expected 2 parts in the sumStr, got %#v", chunks)
}
sumType, checksum := chunks[0], chunks[1]
out.Write(sf.FormatProgress(utils.TruncateID(img.ID), "Pulling fs layer", nil))
downloadFunc := func(di *downloadInfo) error {
log.Debugf("pulling blob %q to V1 img %s", sumStr, img.ID)
if c, err := s.poolAdd("pull", "img:"+img.ID); err != nil {
if c != nil {
out.Write(sf.FormatProgress(utils.TruncateID(img.ID), "Layer already being pulled by another client. Waiting.", nil))
<-c
out.Write(sf.FormatProgress(utils.TruncateID(img.ID), "Download complete", nil))
} else {
log.Debugf("Image (id: %s) pull is already running, skipping: %v", img.ID, err)
}
} else {
defer s.poolRemove("pull", "img:"+img.ID)
tmpFile, err := ioutil.TempFile("", "GetV2ImageBlob")
if err != nil {
return err
}
r, l, err := r.GetV2ImageBlobReader(remoteName, sumType, checksum, nil)
if err != nil {
return err
}
defer r.Close()
io.Copy(tmpFile, utils.ProgressReader(r, int(l), out, sf, false, utils.TruncateID(img.ID), "Downloading"))
out.Write(sf.FormatProgress(utils.TruncateID(img.ID), "Download complete", nil))
log.Debugf("Downloaded %s to tempfile %s", img.ID, tmpFile.Name())
di.tmpFile = tmpFile
di.length = l
di.downloaded = true
}
di.imgJSON = imgJSON
return nil
}
if parallel {
downloads[i].err = make(chan error)
go func(di *downloadInfo) {
di.err <- downloadFunc(di)
}(&downloads[i])
} else {
err := downloadFunc(&downloads[i])
if err != nil {
return false, err
}
//.........这里部分代码省略.........
示例4: pullV2Tag
func (s *TagStore) pullV2Tag(eng *engine.Engine, r *registry.Session, out io.Writer, endpoint *registry.Endpoint, repoInfo *registry.RepositoryInfo, tag string, sf *utils.StreamFormatter, parallel bool, auth *registry.RequestAuthorization) (bool, error) {
log.Debugf("Pulling tag from V2 registry: %q", tag)
manifestBytes, manifestDigest, err := r.GetV2ImageManifest(endpoint, repoInfo.RemoteName, tag, auth)
if err != nil {
return false, err
}
// loadManifest ensures that the manifest payload has the expected digest
// if the tag is a digest reference.
manifest, verified, err := s.loadManifest(eng, manifestBytes, manifestDigest, tag)
if err != nil {
return false, fmt.Errorf("error verifying manifest: %s", err)
}
if err := checkValidManifest(manifest); err != nil {
return false, err
}
if verified {
log.Printf("Image manifest for %s has been verified", utils.ImageReference(repoInfo.CanonicalName, tag))
}
out.Write(sf.FormatStatus(tag, "Pulling from %s", repoInfo.CanonicalName))
downloads := make([]downloadInfo, len(manifest.FSLayers))
for i := len(manifest.FSLayers) - 1; i >= 0; i-- {
var (
sumStr = manifest.FSLayers[i].BlobSum
imgJSON = []byte(manifest.History[i].V1Compatibility)
)
img, err := image.NewImgJSON(imgJSON)
if err != nil {
return false, fmt.Errorf("failed to parse json: %s", err)
}
downloads[i].img = img
// Check if exists
if s.graph.Exists(img.ID) {
log.Debugf("Image already exists: %s", img.ID)
continue
}
dgst, err := digest.ParseDigest(sumStr)
if err != nil {
return false, err
}
downloads[i].digest = dgst
out.Write(sf.FormatProgress(common.TruncateID(img.ID), "Pulling fs layer", nil))
downloadFunc := func(di *downloadInfo) error {
log.Debugf("pulling blob %q to V1 img %s", sumStr, img.ID)
if c, err := s.poolAdd("pull", "img:"+img.ID); err != nil {
if c != nil {
out.Write(sf.FormatProgress(common.TruncateID(img.ID), "Layer already being pulled by another client. Waiting.", nil))
<-c
out.Write(sf.FormatProgress(common.TruncateID(img.ID), "Download complete", nil))
} else {
log.Debugf("Image (id: %s) pull is already running, skipping: %v", img.ID, err)
}
} else {
defer s.poolRemove("pull", "img:"+img.ID)
tmpFile, err := ioutil.TempFile("", "GetV2ImageBlob")
if err != nil {
return err
}
r, l, err := r.GetV2ImageBlobReader(endpoint, repoInfo.RemoteName, di.digest.Algorithm(), di.digest.Hex(), auth)
if err != nil {
return err
}
defer r.Close()
verifier, err := digest.NewDigestVerifier(di.digest)
if err != nil {
return err
}
if _, err := io.Copy(tmpFile, progressreader.New(progressreader.Config{
In: ioutil.NopCloser(io.TeeReader(r, verifier)),
Out: out,
Formatter: sf,
Size: int(l),
NewLines: false,
ID: common.TruncateID(img.ID),
Action: "Downloading",
})); err != nil {
return fmt.Errorf("unable to copy v2 image blob data: %s", err)
}
out.Write(sf.FormatProgress(common.TruncateID(img.ID), "Verifying Checksum", nil))
if !verifier.Verified() {
log.Infof("Image verification failed: checksum mismatch for %q", di.digest.String())
verified = false
}
//.........这里部分代码省略.........