func translatePullError(err error, ref reference.Named) error {
switch v := err.(type) {
case errcode.Errors:
if len(v) != 0 {
for _, extra := range v[1:] {
logrus.Infof("Ignoring extra error returned from registry: %v", extra)
}
return translatePullError(v[0], ref)
}
case errcode.Error:
var newErr error
switch v.Code {
case errcode.ErrorCodeDenied:
// ErrorCodeDenied is used when access to the repository was denied
newErr = errors.Errorf("repository %s not found: does not exist or no read access", ref.Name())
case v2.ErrorCodeManifestUnknown:
newErr = errors.Errorf("manifest for %s not found", ref.String())
case v2.ErrorCodeNameUnknown:
newErr = errors.Errorf("repository %s not found", ref.Name())
}
if newErr != nil {
logrus.Infof("Translating %q to %q", err, newErr)
return newErr
}
case xfer.DoNotRetry:
return translatePullError(v.Err, ref)
}
return err
}
// ReferencesByName returns the references for a given repository name.
// If there are no references known for this repository name,
// ReferencesByName returns nil.
func (store *repoCache) ReferencesByName(ref reference.Named) []Association {
defer trace.End(trace.Begin(""))
store.mu.RLock()
defer store.mu.RUnlock()
repository, exists := store.Repositories[ref.Name()]
if !exists {
return nil
}
var associations []Association
for refStr, refID := range repository {
ref, err := reference.ParseNamed(refStr)
if err != nil {
// Should never happen
return nil
}
associations = append(associations,
Association{
Ref: ref,
ImageID: refID,
})
}
sort.Sort(lexicalAssociations(associations))
return associations
}
// Looks up image by reference.Named
func (c *ImageCache) GetImageByNamed(named reference.Named) (*metadata.ImageConfig, error) {
c.m.RLock()
defer c.m.RUnlock()
if CacheNotUpdated {
return nil, ErrCacheNotUpdated
}
var config *metadata.ImageConfig
if tagged, ok := named.(reference.NamedTagged); ok {
taggedName := tagged.Name() + ":" + tagged.Tag()
config = c.cacheByName[taggedName]
} else {
// First try just the name.
config = c.cacheByName[named.Name()]
if config == nil {
// try with the default docker tag
taggedName := named.Name() + ":" + reference.DefaultTag
config = c.cacheByName[taggedName]
}
}
return config, nil
}
// newRepositoryInfo validates and breaks down a repository name into a RepositoryInfo
func newRepositoryInfo(config *serviceConfig, name reference.Named) (*RepositoryInfo, error) {
index, err := newIndexInfo(config, name.Hostname())
if err != nil {
return nil, err
}
official := !strings.ContainsRune(name.Name(), '/')
return &RepositoryInfo{name, index, official}, nil
}
func (pm *Manager) newPlugin(ref reference.Named, id string) *plugin {
p := &plugin{
PluginObj: types.Plugin{
Name: ref.Name(),
ID: id,
},
runtimeSourcePath: filepath.Join(pm.runRoot, id),
}
if ref, ok := ref.(reference.NamedTagged); ok {
p.PluginObj.Tag = ref.Tag()
}
return p
}
func digestFromManifest(m *schema1.SignedManifest, name reference.Named) (digest.Digest, int, error) {
payload, err := m.Payload()
if err != nil {
// If this failed, the signatures section was corrupted
// or missing. Treat the entire manifest as the payload.
payload = m.Raw
}
manifestDigest, err := digest.FromBytes(payload)
if err != nil {
logrus.Infof("Could not compute manifest digest for %s:%s : %v", name.Name(), m.Tag, err)
}
return manifestDigest, len(payload), nil
}
// Looks up image by reference.Named
func (ic *ICache) getImageByNamed(named reference.Named) (*metadata.ImageConfig, error) {
var config *metadata.ImageConfig
if tagged, ok := named.(reference.NamedTagged); ok {
taggedName := tagged.Name() + ":" + tagged.Tag()
config = ic.cacheByName[taggedName]
} else {
// First try just the name.
if config, ok = ic.cacheByName[named.Name()]; !ok {
// try with the default docker tag
taggedName := named.Name() + ":" + reference.DefaultTag
config = ic.cacheByName[taggedName]
}
}
return copyImageConfig(config), nil
}
// Get returns the imageID for a parsed reference
func (store *repoCache) Get(ref reference.Named) (string, error) {
defer trace.End(trace.Begin(""))
ref = reference.WithDefaultTag(ref)
store.mu.RLock()
defer store.mu.RUnlock()
repository, exists := store.Repositories[ref.Name()]
if !exists || repository == nil {
return "", ErrDoesNotExist
}
imageID, exists := repository[ref.String()]
if !exists {
return "", ErrDoesNotExist
}
return imageID, nil
}
// Delete deletes a reference from the store. It returns true if a deletion
// happened, or false otherwise.
func (store *repoCache) Delete(ref reference.Named, save bool) (bool, error) {
defer trace.End(trace.Begin(""))
ref = reference.WithDefaultTag(ref)
store.mu.Lock()
defer store.mu.Unlock()
var err error
// return code -- assume success
rtc := true
repoName := ref.Name()
repository, exists := store.Repositories[repoName]
if !exists {
return false, ErrDoesNotExist
}
refStr := ref.String()
if imageID, exists := repository[refStr]; exists {
delete(repository, refStr)
if len(repository) == 0 {
delete(store.Repositories, repoName)
}
if store.referencesByIDCache[imageID] != nil {
delete(store.referencesByIDCache[imageID], refStr)
if len(store.referencesByIDCache[imageID]) == 0 {
delete(store.referencesByIDCache, imageID)
}
}
if layer, exists := store.images[imageID]; exists {
delete(store.Layers, imageID)
delete(store.images, layer)
}
if save {
err = store.Save()
if err != nil {
rtc = false
}
}
return rtc, err
}
return false, ErrDoesNotExist
}
// isSingleReference returns true when all references are from one repository
// and there is at most one tag. Returns false for empty input.
func isSingleReference(repoRefs []reference.Named) bool {
if len(repoRefs) <= 1 {
return len(repoRefs) == 1
}
var singleRef reference.Named
canonicalRefs := map[string]struct{}{}
for _, repoRef := range repoRefs {
if _, isCanonical := repoRef.(reference.Canonical); isCanonical {
canonicalRefs[repoRef.Name()] = struct{}{}
} else if singleRef == nil {
singleRef = repoRef
} else {
return false
}
}
if singleRef == nil {
// Just use first canonical ref
singleRef = repoRefs[0]
}
_, ok := canonicalRefs[singleRef.Name()]
return len(canonicalRefs) == 1 && ok
}
func (pm *Manager) pull(ref reference.Named, metaHeader http.Header, authConfig *types.AuthConfig, pluginID string) (types.PluginPrivileges, error) {
pd, err := distribution.Pull(ref, pm.registryService, metaHeader, authConfig)
if err != nil {
logrus.Debugf("error in distribution.Pull(): %v", err)
return nil, err
}
if err := distribution.WritePullData(pd, filepath.Join(pm.libRoot, pluginID), true); err != nil {
logrus.Debugf("error in distribution.WritePullData(): %v", err)
return nil, err
}
tag := distribution.GetTag(ref)
p := v2.NewPlugin(ref.Name(), pluginID, pm.runRoot, pm.libRoot, tag)
if err := p.InitPlugin(); err != nil {
return nil, err
}
pm.pluginStore.Add(p)
pm.pluginEventLogger(pluginID, ref.String(), "pull")
return p.ComputePrivileges(), nil
}
func (store *repoCache) AddReference(ref reference.Named, imageID string, force bool, layerID string, save bool) error {
defer trace.End(trace.Begin(""))
if ref.Name() == string(digest.Canonical) {
return errors.New("refusing to create an ambiguous tag using digest algorithm as name")
}
var err error
store.mu.Lock()
defer store.mu.Unlock()
// does this repo (i.e. busybox) exist?
repository, exists := store.Repositories[ref.Name()]
if !exists || repository == nil {
repository = make(map[string]string)
store.Repositories[ref.Name()] = repository
}
refStr := ref.String()
oldID, exists := repository[refStr]
if exists {
if oldID == imageID {
log.Debugf("Image %s is already tagged as %s", oldID, ref.String())
return nil
}
// force only works for tags
if digested, isDigest := ref.(reference.Canonical); isDigest {
log.Debugf("Unable to overwrite %s with digest %s", oldID, digested.Digest().String())
return fmt.Errorf("Cannot overwrite digest %s", digested.Digest().String())
}
if !force {
log.Debugf("Refusing to overwrite %s with %s unless force is specified", oldID, ref.String())
return fmt.Errorf("Conflict: Tag %s is already set to image %s, if you want to replace it, please use -f option", ref.String(), oldID)
}
if store.referencesByIDCache[oldID] != nil {
delete(store.referencesByIDCache[oldID], refStr)
if len(store.referencesByIDCache[oldID]) == 0 {
delete(store.referencesByIDCache, oldID)
}
}
}
repository[refStr] = imageID
if store.referencesByIDCache[imageID] == nil {
store.referencesByIDCache[imageID] = make(map[string]reference.Named)
}
store.referencesByIDCache[imageID][refStr] = ref
store.Layers[layerID] = imageID
store.images[imageID] = layerID
// should we save this input?
if save {
err = store.Save()
}
return err
}
