func (s storageTransport) GetStoreImage(store storage.Store, ref types.ImageReference) (*storage.Image, error) {
dref := ref.DockerReference()
if dref == nil {
if sref, ok := ref.(*storageReference); ok {
if sref.id != "" {
if img, err := store.GetImage(sref.id); err == nil {
return img, nil
}
}
}
return nil, ErrInvalidReference
}
return store.GetImage(verboseName(dref))
}
// requirementsForImageRef selects the appropriate requirements for ref.
func (pc *PolicyContext) requirementsForImageRef(ref types.ImageReference) PolicyRequirements {
// Do we have a PolicyTransportScopes for this transport?
transportName := ref.Transport().Name()
if transportScopes, ok := pc.Policy.Transports[transportName]; ok {
// Look for a full match.
identity := ref.PolicyConfigurationIdentity()
if req, ok := transportScopes[identity]; ok {
logrus.Debugf(` Using transport "%s" policy section %s`, transportName, identity)
return req
}
// Look for a match of the possible parent namespaces.
for _, name := range ref.PolicyConfigurationNamespaces() {
if req, ok := transportScopes[name]; ok {
logrus.Debugf(` Using transport "%s" specific policy section %s`, transportName, name)
return req
}
}
// Look for a default match for the transport.
if req, ok := transportScopes[""]; ok {
logrus.Debugf(` Using transport "%s" policy section ""`, transportName)
return req
}
}
logrus.Debugf(" Using default policy section")
return pc.Policy.Default
}
// policyIdentityLogName returns a string description of the image identity for policy purposes.
// ONLY use this for log messages, not for any decisions!
func policyIdentityLogName(ref types.ImageReference) string {
return ref.Transport().Name() + ":" + ref.PolicyConfigurationIdentity()
}