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-rw-r--r--libpod/runtime_img.go823
1 files changed, 823 insertions, 0 deletions
diff --git a/libpod/runtime_img.go b/libpod/runtime_img.go
new file mode 100644
index 000000000..9e7ad3106
--- /dev/null
+++ b/libpod/runtime_img.go
@@ -0,0 +1,823 @@
+package libpod
+
+import (
+ "encoding/json"
+ "fmt"
+ "io"
+ "os"
+ "strings"
+ "syscall"
+ "time"
+
+ cp "github.com/containers/image/copy"
+ dockerarchive "github.com/containers/image/docker/archive"
+ "github.com/containers/image/docker/reference"
+ "github.com/containers/image/docker/tarfile"
+ ociarchive "github.com/containers/image/oci/archive"
+ "github.com/containers/image/pkg/sysregistries"
+ "github.com/containers/image/signature"
+ is "github.com/containers/image/storage"
+ "github.com/containers/image/transports"
+ "github.com/containers/image/transports/alltransports"
+ "github.com/containers/image/types"
+ "github.com/containers/storage"
+ "github.com/containers/storage/pkg/archive"
+ "github.com/kubernetes-incubator/cri-o/libpod/common"
+ digest "github.com/opencontainers/go-digest"
+ ociv1 "github.com/opencontainers/image-spec/specs-go/v1"
+ "github.com/pkg/errors"
+)
+
+// Runtime API
+
+const (
+ // DefaultRegistry is a prefix that we apply to an image name
+ // to check docker hub first for the image
+ DefaultRegistry = "docker://"
+)
+
+var (
+ // DockerArchive is the transport we prepend to an image name
+ // when saving to docker-archive
+ DockerArchive = dockerarchive.Transport.Name()
+ // OCIArchive is the transport we prepend to an image name
+ // when saving to oci-archive
+ OCIArchive = ociarchive.Transport.Name()
+ // DirTransport is the transport for pushing and pulling
+ // images to and from a directory
+ DirTransport = "dir"
+)
+
+// CopyOptions contains the options given when pushing or pulling images
+type CopyOptions struct {
+ // Compression specifies the type of compression which is applied to
+ // layer blobs. The default is to not use compression, but
+ // archive.Gzip is recommended.
+ Compression archive.Compression
+ // DockerRegistryOptions encapsulates settings that affect how we
+ // connect or authenticate to a remote registry to which we want to
+ // push the image.
+ common.DockerRegistryOptions
+ // SigningOptions encapsulates settings that control whether or not we
+ // strip or add signatures to the image when pushing (uploading) the
+ // image to a registry.
+ common.SigningOptions
+
+ // SigningPolicyPath this points to a alternative signature policy file, used mainly for testing
+ SignaturePolicyPath string
+ // AuthFile is the path of the cached credentials file defined by the user
+ AuthFile string
+ // Writer is the reportWriter for the output
+ Writer io.Writer
+}
+
+// Image API
+
+// ImageFilterParams contains the filter options that may be given when outputting images
+type ImageFilterParams struct {
+ Dangling string
+ Label string
+ BeforeImage time.Time
+ SinceImage time.Time
+ ReferencePattern string
+ ImageName string
+ ImageInput string
+}
+
+// struct for when a user passes a short or incomplete
+// image name
+type imageDecomposeStruct struct {
+ imageName string
+ tag string
+ registry string
+ hasRegistry bool
+ transport string
+}
+
+// ImageFilter is a function to determine whether an image is included in
+// command output. Images to be outputted are tested using the function. A true
+// return will include the image, a false return will exclude it.
+type ImageFilter func(*storage.Image, *types.ImageInspectInfo) bool
+
+func (ips imageDecomposeStruct) returnFQName() string {
+ return fmt.Sprintf("%s%s/%s:%s", ips.transport, ips.registry, ips.imageName, ips.tag)
+}
+
+func getRegistriesToTry(image string, store storage.Store) ([]*pullStruct, error) {
+ var pStructs []*pullStruct
+ var imageError = fmt.Sprintf("unable to parse '%s'\n", image)
+ imgRef, err := reference.Parse(image)
+ if err != nil {
+ return nil, errors.Wrapf(err, imageError)
+ }
+ tagged, isTagged := imgRef.(reference.NamedTagged)
+ tag := "latest"
+ if isTagged {
+ tag = tagged.Tag()
+ }
+ hasDomain := true
+ registry := reference.Domain(imgRef.(reference.Named))
+ if registry == "" {
+ hasDomain = false
+ }
+ imageName := reference.Path(imgRef.(reference.Named))
+ pImage := imageDecomposeStruct{
+ imageName,
+ tag,
+ registry,
+ hasDomain,
+ "docker://",
+ }
+ if pImage.hasRegistry {
+ // If input has a registry, we have to assume they included an image
+ // name but maybe not a tag
+ srcRef, err := alltransports.ParseImageName(pImage.returnFQName())
+ if err != nil {
+ return nil, errors.Errorf(imageError)
+ }
+ pStruct := &pullStruct{
+ image: srcRef.DockerReference().String(),
+ srcRef: srcRef,
+ }
+ pStructs = append(pStructs, pStruct)
+ } else {
+ // No registry means we check the globals registries configuration file
+ // and assemble a list of candidate sources to try
+ registryConfigPath := ""
+ envOverride := os.Getenv("REGISTRIES_CONFIG_PATH")
+ if len(envOverride) > 0 {
+ registryConfigPath = envOverride
+ }
+ searchRegistries, err := sysregistries.GetRegistries(&types.SystemContext{SystemRegistriesConfPath: registryConfigPath})
+ if err != nil {
+ fmt.Println(err)
+ return nil, errors.Errorf("unable to parse the registries.conf file and"+
+ " the image name '%s' is incomplete.", imageName)
+ }
+ for _, searchRegistry := range searchRegistries {
+ pImage.registry = searchRegistry
+ srcRef, err := alltransports.ParseImageName(pImage.returnFQName())
+ if err != nil {
+ return nil, errors.Errorf("unable to parse '%s'", pImage.returnFQName())
+ }
+ pStruct := &pullStruct{
+ image: srcRef.DockerReference().String(),
+ srcRef: srcRef,
+ }
+ pStructs = append(pStructs, pStruct)
+ }
+ }
+
+ for _, pStruct := range pStructs {
+ destRef, err := is.Transport.ParseStoreReference(store, pStruct.image)
+ if err != nil {
+ return nil, errors.Errorf("error parsing dest reference name: %v", err)
+ }
+ pStruct.dstRef = destRef
+ }
+ return pStructs, nil
+}
+
+type pullStruct struct {
+ image string
+ srcRef types.ImageReference
+ dstRef types.ImageReference
+}
+
+func (r *Runtime) getPullStruct(srcRef types.ImageReference, destName string) (*pullStruct, error) {
+ reference := destName
+ if srcRef.DockerReference() != nil {
+ reference = srcRef.DockerReference().String()
+ }
+ destRef, err := is.Transport.ParseStoreReference(r.store, reference)
+ if err != nil {
+ return nil, errors.Errorf("error parsing dest reference name: %v", err)
+ }
+ return &pullStruct{
+ image: destName,
+ srcRef: srcRef,
+ dstRef: destRef,
+ }, nil
+}
+
+// returns a list of pullStruct with the srcRef and DstRef based on the transport being used
+func (r *Runtime) getPullListFromRef(srcRef types.ImageReference, imgName string, sc *types.SystemContext) ([]*pullStruct, error) {
+ var pullStructs []*pullStruct
+ splitArr := strings.Split(imgName, ":")
+ archFile := splitArr[len(splitArr)-1]
+
+ // supports pulling from docker-archive, oci, and registries
+ if srcRef.Transport().Name() == DockerArchive {
+ tarSource := tarfile.NewSource(archFile)
+ manifest, err := tarSource.LoadTarManifest()
+ if err != nil {
+ return nil, errors.Errorf("error retrieving manifest.json: %v", err)
+ }
+ // to pull the first image stored in the tar file
+ if len(manifest) == 0 {
+ // create an image object and use the hex value of the digest as the image ID
+ // for parsing the store reference
+ newImg, err := srcRef.NewImage(sc)
+ if err != nil {
+ return nil, err
+ }
+ defer newImg.Close()
+ digest := newImg.ConfigInfo().Digest
+ if err := digest.Validate(); err == nil {
+ pullInfo, err := r.getPullStruct(srcRef, "@"+digest.Hex())
+ if err != nil {
+ return nil, err
+ }
+ pullStructs = append(pullStructs, pullInfo)
+ } else {
+ return nil, errors.Wrapf(err, "error getting config info")
+ }
+ } else {
+ pullInfo, err := r.getPullStruct(srcRef, manifest[0].RepoTags[0])
+ if err != nil {
+ return nil, err
+ }
+ pullStructs = append(pullStructs, pullInfo)
+ }
+
+ } else if srcRef.Transport().Name() == OCIArchive {
+ // retrieve the manifest from index.json to access the image name
+ manifest, err := ociarchive.LoadManifestDescriptor(srcRef)
+ if err != nil {
+ return nil, errors.Wrapf(err, "error loading manifest for %q", srcRef)
+ }
+
+ if manifest.Annotations == nil || manifest.Annotations["org.opencontainers.image.ref.name"] == "" {
+ return nil, errors.Errorf("error, archive doesn't have a name annotation. Cannot store image with no name")
+ }
+ pullInfo, err := r.getPullStruct(srcRef, manifest.Annotations["org.opencontainers.image.ref.name"])
+ if err != nil {
+ return nil, err
+ }
+ pullStructs = append(pullStructs, pullInfo)
+ } else if srcRef.Transport().Name() == DirTransport {
+ // supports pull from a directory
+ image := splitArr[1]
+ // remove leading "/"
+ if image[:1] == "/" {
+ image = image[1:]
+ }
+ pullInfo, err := r.getPullStruct(srcRef, image)
+ if err != nil {
+ return nil, err
+ }
+ pullStructs = append(pullStructs, pullInfo)
+ } else {
+ pullInfo, err := r.getPullStruct(srcRef, imgName)
+ if err != nil {
+ return nil, err
+ }
+ pullStructs = append(pullStructs, pullInfo)
+ }
+ return pullStructs, nil
+}
+
+// PullImage pulls an image from configured registries
+// By default, only the latest tag (or a specific tag if requested) will be
+// pulled. If allTags is true, all tags for the requested image will be pulled.
+// Signature validation will be performed if the Runtime has been appropriately
+// configured
+func (r *Runtime) PullImage(imgName string, options CopyOptions) error {
+ r.lock.Lock()
+ defer r.lock.Unlock()
+
+ if !r.valid {
+ return ErrRuntimeStopped
+ }
+
+ // PullImage copies the image from the source to the destination
+ var pullStructs []*pullStruct
+
+ signaturePolicyPath := r.config.SignaturePolicyPath
+ if options.SignaturePolicyPath != "" {
+ signaturePolicyPath = options.SignaturePolicyPath
+ }
+
+ sc := common.GetSystemContext(signaturePolicyPath, options.AuthFile)
+
+ srcRef, err := alltransports.ParseImageName(imgName)
+ if err != nil {
+ // could be trying to pull from registry with short name
+ pullStructs, err = getRegistriesToTry(imgName, r.store)
+ if err != nil {
+ return errors.Wrap(err, "error getting default registries to try")
+ }
+ } else {
+ pullStructs, err = r.getPullListFromRef(srcRef, imgName, sc)
+ if err != nil {
+ return errors.Wrapf(err, "error getting pullStruct info to pull image %q", imgName)
+ }
+ }
+
+ policy, err := signature.DefaultPolicy(sc)
+ if err != nil {
+ return err
+ }
+
+ policyContext, err := signature.NewPolicyContext(policy)
+ if err != nil {
+ return err
+ }
+ defer policyContext.Destroy()
+
+ copyOptions := common.GetCopyOptions(options.Writer, signaturePolicyPath, &options.DockerRegistryOptions, nil, options.SigningOptions, options.AuthFile)
+
+ for _, imageInfo := range pullStructs {
+ fmt.Printf("Trying to pull %s...\n", imageInfo.image)
+ if err = cp.Image(policyContext, imageInfo.dstRef, imageInfo.srcRef, copyOptions); err != nil {
+ fmt.Println("Failed")
+ } else {
+ return nil
+ }
+ }
+ return errors.Wrapf(err, "error pulling image from %q", imgName)
+}
+
+// PushImage pushes the given image to a location described by the given path
+func (r *Runtime) PushImage(source string, destination string, options CopyOptions) error {
+ r.lock.Lock()
+ defer r.lock.Unlock()
+
+ if !r.valid {
+ return ErrRuntimeStopped
+ }
+
+ // PushImage pushes the src image to the destination
+ //func PushImage(source, destination string, options CopyOptions) error {
+ if source == "" || destination == "" {
+ return errors.Wrapf(syscall.EINVAL, "source and destination image names must be specified")
+ }
+
+ // Get the destination Image Reference
+ dest, err := alltransports.ParseImageName(destination)
+ if err != nil {
+ return errors.Wrapf(err, "error getting destination imageReference for %q", destination)
+ }
+
+ signaturePolicyPath := r.config.SignaturePolicyPath
+ if options.SignaturePolicyPath != "" {
+ signaturePolicyPath = options.SignaturePolicyPath
+ }
+
+ sc := common.GetSystemContext(signaturePolicyPath, options.AuthFile)
+
+ policy, err := signature.DefaultPolicy(sc)
+ if err != nil {
+ return err
+ }
+
+ policyContext, err := signature.NewPolicyContext(policy)
+ if err != nil {
+ return err
+ }
+ defer policyContext.Destroy()
+
+ // Look up the source image, expecting it to be in local storage
+ src, err := is.Transport.ParseStoreReference(r.store, source)
+ if err != nil {
+ return errors.Wrapf(err, "error getting source imageReference for %q", source)
+ }
+
+ copyOptions := common.GetCopyOptions(options.Writer, signaturePolicyPath, nil, &options.DockerRegistryOptions, options.SigningOptions, options.AuthFile)
+
+ // Copy the image to the remote destination
+ err = cp.Image(policyContext, dest, src, copyOptions)
+ if err != nil {
+ return errors.Wrapf(err, "Error copying image to the remote destination")
+ }
+ return nil
+}
+
+// TagImage adds a tag to the given image
+func (r *Runtime) TagImage(image *storage.Image, tag string) error {
+ r.lock.Lock()
+ defer r.lock.Unlock()
+
+ if !r.valid {
+ return ErrRuntimeStopped
+ }
+
+ tags, err := r.store.Names(image.ID)
+ if err != nil {
+ return err
+ }
+ for _, key := range tags {
+ if key == tag {
+ return nil
+ }
+ }
+ tags = append(tags, tag)
+ return r.store.SetNames(image.ID, tags)
+}
+
+// UntagImage removes a tag from the given image
+func (r *Runtime) UntagImage(image *storage.Image, tag string) (string, error) {
+ r.lock.Lock()
+ defer r.lock.Unlock()
+
+ if !r.valid {
+ return "", ErrRuntimeStopped
+ }
+
+ tags, err := r.store.Names(image.ID)
+ if err != nil {
+ return "", err
+ }
+ for i, key := range tags {
+ if key == tag {
+ tags[i] = tags[len(tags)-1]
+ tags = tags[:len(tags)-1]
+ break
+ }
+ }
+ if err = r.store.SetNames(image.ID, tags); err != nil {
+ return "", err
+ }
+ return tag, nil
+}
+
+// RemoveImage deletes an image from local storage
+// Images being used by running containers can only be removed if force=true
+func (r *Runtime) RemoveImage(image *storage.Image, force bool) (string, error) {
+ r.lock.Lock()
+ defer r.lock.Unlock()
+
+ if !r.valid {
+ return "", ErrRuntimeStopped
+ }
+
+ containersWithImage, err := r.getContainersWithImage(image.ID)
+ if err != nil {
+ return "", errors.Wrapf(err, "error getting containers for image %q", image.ID)
+ }
+ if len(containersWithImage) > 0 && len(image.Names) <= 1 {
+ if force {
+ if err := r.removeMultipleContainers(containersWithImage); err != nil {
+ return "", err
+ }
+ } else {
+ for _, ctr := range containersWithImage {
+ return "", fmt.Errorf("Could not remove image %q (must force) - container %q is using its reference image", image.ID, ctr.ImageID)
+ }
+ }
+ }
+
+ if len(image.Names) > 1 && !force {
+ return "", fmt.Errorf("unable to delete %s (must force) - image is referred to in multiple tags", image.ID)
+ }
+ // If it is forced, we have to untag the image so that it can be deleted
+ image.Names = image.Names[:0]
+
+ _, err = r.store.DeleteImage(image.ID, true)
+ if err != nil {
+ return "", err
+ }
+ return image.ID, nil
+}
+
+// GetImage retrieves an image matching the given name or hash from system
+// storage
+// If no matching image can be found, an error is returned
+func (r *Runtime) GetImage(image string) (*storage.Image, error) {
+ r.lock.Lock()
+ defer r.lock.Unlock()
+
+ if !r.valid {
+ return nil, ErrRuntimeStopped
+ }
+ return r.getImage(image)
+}
+
+func (r *Runtime) getImage(image string) (*storage.Image, error) {
+ var img *storage.Image
+ ref, err := is.Transport.ParseStoreReference(r.store, image)
+ if err == nil {
+ img, err = is.Transport.GetStoreImage(r.store, ref)
+ }
+ if err != nil {
+ img2, err2 := r.store.Image(image)
+ if err2 != nil {
+ if ref == nil {
+ return nil, errors.Wrapf(err, "error parsing reference to image %q", image)
+ }
+ return nil, errors.Wrapf(err, "unable to locate image %q", image)
+ }
+ img = img2
+ }
+ return img, nil
+}
+
+// GetImageRef searches for and returns a new types.Image matching the given name or ID in the given store.
+func (r *Runtime) GetImageRef(image string) (types.Image, error) {
+ r.lock.Lock()
+ defer r.lock.Unlock()
+
+ if !r.valid {
+ return nil, ErrRuntimeStopped
+ }
+ return r.getImageRef(image)
+
+}
+
+func (r *Runtime) getImageRef(image string) (types.Image, error) {
+ img, err := r.getImage(image)
+ if err != nil {
+ return nil, errors.Wrapf(err, "unable to locate image %q", image)
+ }
+ ref, err := is.Transport.ParseStoreReference(r.store, "@"+img.ID)
+ if err != nil {
+ return nil, errors.Wrapf(err, "error parsing reference to image %q", img.ID)
+ }
+ imgRef, err := ref.NewImage(nil)
+ if err != nil {
+ return nil, errors.Wrapf(err, "error reading image %q", img.ID)
+ }
+ return imgRef, nil
+}
+
+// GetImages retrieves all images present in storage
+// Filters can be provided which will determine which images are included in the
+// output. Multiple filters are handled by ANDing their output, so only images
+// matching all filters are included
+func (r *Runtime) GetImages(params *ImageFilterParams, filters ...ImageFilter) ([]*storage.Image, error) {
+ r.lock.RLock()
+ defer r.lock.RUnlock()
+
+ if !r.valid {
+ return nil, ErrRuntimeStopped
+ }
+
+ images, err := r.store.Images()
+ if err != nil {
+ return nil, err
+ }
+
+ var imagesFiltered []*storage.Image
+
+ for _, img := range images {
+ info, err := r.getImageInspectInfo(img)
+ if err != nil {
+ return nil, err
+ }
+ var names []string
+ if len(img.Names) > 0 {
+ names = img.Names
+ } else {
+ names = append(names, "<none>")
+ }
+ for _, name := range names {
+ include := true
+ if params != nil {
+ params.ImageName = name
+ }
+ for _, filter := range filters {
+ include = include && filter(&img, info)
+ }
+
+ if include {
+ newImage := img
+ newImage.Names = []string{name}
+ imagesFiltered = append(imagesFiltered, &newImage)
+ }
+ }
+ }
+
+ return imagesFiltered, nil
+}
+
+// GetHistory gets the history of an image and information about its layers
+func (r *Runtime) GetHistory(image string) ([]ociv1.History, []types.BlobInfo, string, error) {
+ r.lock.RLock()
+ defer r.lock.RUnlock()
+
+ if !r.valid {
+ return nil, nil, "", ErrRuntimeStopped
+ }
+
+ img, err := r.getImage(image)
+ if err != nil {
+ return nil, nil, "", errors.Wrapf(err, "no such image %q", image)
+ }
+
+ src, err := r.getImageRef(image)
+ if err != nil {
+ return nil, nil, "", errors.Wrapf(err, "error instantiating image %q", image)
+ }
+
+ oci, err := src.OCIConfig()
+ if err != nil {
+ return nil, nil, "", err
+ }
+
+ return oci.History, src.LayerInfos(), img.ID, nil
+}
+
+// ImportImage imports an OCI format image archive into storage as an image
+func (r *Runtime) ImportImage(path string) (*storage.Image, error) {
+ return nil, ErrNotImplemented
+}
+
+// GetImageInspectInfo returns the inspect information of an image
+func (r *Runtime) GetImageInspectInfo(image storage.Image) (*types.ImageInspectInfo, error) {
+ r.lock.RLock()
+ defer r.lock.RUnlock()
+
+ if !r.valid {
+ return nil, ErrRuntimeStopped
+ }
+ return r.getImageInspectInfo(image)
+}
+
+func (r *Runtime) getImageInspectInfo(image storage.Image) (*types.ImageInspectInfo, error) {
+ img, err := r.getImageRef(image.ID)
+ if err != nil {
+ return nil, err
+ }
+ return img.Inspect()
+}
+
+// ParseImageFilter takes a set of images and a filter string as input, and returns the libpod.ImageFilterParams struct
+func (r *Runtime) ParseImageFilter(imageInput, filter string) (*ImageFilterParams, error) {
+ r.lock.RLock()
+ defer r.lock.RUnlock()
+
+ if !r.valid {
+ return nil, ErrRuntimeStopped
+ }
+
+ if filter == "" && imageInput == "" {
+ return nil, nil
+ }
+
+ var params ImageFilterParams
+ params.ImageInput = imageInput
+
+ if filter == "" && imageInput != "" {
+ return &params, nil
+ }
+
+ images, err := r.store.Images()
+ if err != nil {
+ return nil, err
+ }
+
+ filterStrings := strings.Split(filter, ",")
+ for _, param := range filterStrings {
+ pair := strings.SplitN(param, "=", 2)
+ switch strings.TrimSpace(pair[0]) {
+ case "dangling":
+ if common.IsValidBool(pair[1]) {
+ params.Dangling = pair[1]
+ } else {
+ return nil, fmt.Errorf("invalid filter: '%s=[%s]'", pair[0], pair[1])
+ }
+ case "label":
+ params.Label = pair[1]
+ case "before":
+ if img, err := findImageInSlice(images, pair[1]); err == nil {
+ info, err := r.GetImageInspectInfo(img)
+ if err != nil {
+ return nil, err
+ }
+ params.BeforeImage = info.Created
+ } else {
+ return nil, fmt.Errorf("no such id: %s", pair[0])
+ }
+ case "since":
+ if img, err := findImageInSlice(images, pair[1]); err == nil {
+ info, err := r.GetImageInspectInfo(img)
+ if err != nil {
+ return nil, err
+ }
+ params.SinceImage = info.Created
+ } else {
+ return nil, fmt.Errorf("no such id: %s``", pair[0])
+ }
+ case "reference":
+ params.ReferencePattern = pair[1]
+ default:
+ return nil, fmt.Errorf("invalid filter: '%s'", pair[0])
+ }
+ }
+ return &params, nil
+}
+
+// InfoAndDigestAndSize returns the inspection info and size of the image in the given
+// store and the digest of its manifest, if it has one, or "" if it doesn't.
+func (r *Runtime) InfoAndDigestAndSize(img storage.Image) (*types.ImageInspectInfo, digest.Digest, int64, error) {
+ r.lock.RLock()
+ defer r.lock.RUnlock()
+
+ if !r.valid {
+ return nil, "", -1, ErrRuntimeStopped
+ }
+
+ imgRef, err := r.getImageRef("@" + img.ID)
+ if err != nil {
+ return nil, "", -1, errors.Wrapf(err, "error reading image %q", img.ID)
+ }
+ defer imgRef.Close()
+ return infoAndDigestAndSize(imgRef)
+}
+
+func infoAndDigestAndSize(imgRef types.Image) (*types.ImageInspectInfo, digest.Digest, int64, error) {
+ imgSize, err := imgRef.Size()
+ if err != nil {
+ return nil, "", -1, errors.Wrapf(err, "error reading size of image %q", transports.ImageName(imgRef.Reference()))
+ }
+ manifest, _, err := imgRef.Manifest()
+ if err != nil {
+ return nil, "", -1, errors.Wrapf(err, "error reading manifest for image %q", transports.ImageName(imgRef.Reference()))
+ }
+ manifestDigest := digest.Digest("")
+ if len(manifest) > 0 {
+ manifestDigest = digest.Canonical.FromBytes(manifest)
+ }
+ info, err := imgRef.Inspect()
+ if err != nil {
+ return nil, "", -1, errors.Wrapf(err, "error inspecting image %q", transports.ImageName(imgRef.Reference()))
+ }
+ return info, manifestDigest, imgSize, nil
+}
+
+// MatchesID returns true if argID is a full or partial match for id
+func MatchesID(id, argID string) bool {
+ return strings.HasPrefix(argID, id)
+}
+
+// MatchesReference returns true if argName is a full or partial match for name
+// Partial matches will register only if they match the most specific part of the name available
+// For example, take the image docker.io/library/redis:latest
+// redis, library/redis, docker.io/library/redis, redis:latest, etc. will match
+// But redis:alpine, ry/redis, library, and io/library/redis will not
+func MatchesReference(name, argName string) bool {
+ if argName == "" {
+ return false
+ }
+ splitName := strings.Split(name, ":")
+ // If the arg contains a tag, we handle it differently than if it does not
+ if strings.Contains(argName, ":") {
+ splitArg := strings.Split(argName, ":")
+ return strings.HasSuffix(splitName[0], splitArg[0]) && (splitName[1] == splitArg[1])
+ }
+ return strings.HasSuffix(splitName[0], argName)
+}
+
+// ParseImageNames parses the names we've stored with an image into a list of
+// tagged references and a list of references which contain digests.
+func ParseImageNames(names []string) (tags, digests []string, err error) {
+ for _, name := range names {
+ if named, err := reference.ParseNamed(name); err == nil {
+ if digested, ok := named.(reference.Digested); ok {
+ canonical, err := reference.WithDigest(named, digested.Digest())
+ if err == nil {
+ digests = append(digests, canonical.String())
+ }
+ } else {
+ if reference.IsNameOnly(named) {
+ named = reference.TagNameOnly(named)
+ }
+ if tagged, ok := named.(reference.Tagged); ok {
+ namedTagged, err := reference.WithTag(named, tagged.Tag())
+ if err == nil {
+ tags = append(tags, namedTagged.String())
+ }
+ }
+ }
+ }
+ }
+ return tags, digests, nil
+}
+
+func annotations(manifest []byte, manifestType string) map[string]string {
+ annotations := make(map[string]string)
+ switch manifestType {
+ case ociv1.MediaTypeImageManifest:
+ var m ociv1.Manifest
+ if err := json.Unmarshal(manifest, &m); err == nil {
+ for k, v := range m.Annotations {
+ annotations[k] = v
+ }
+ }
+ }
+ return annotations
+}
+
+func findImageInSlice(images []storage.Image, ref string) (storage.Image, error) {
+ for _, image := range images {
+ if MatchesID(image.ID, ref) {
+ return image, nil
+ }
+ for _, name := range image.Names {
+ if MatchesReference(name, ref) {
+ return image, nil
+ }
+ }
+ }
+ return storage.Image{}, errors.New("could not find image")
+}
generated by cgit v1.2.3-54-g00ecf (git 2.39.0) at 2024-11-15 21:18:38 +0000