Files
Valentin Rothberg 0f7d54b026 migrate Podman to containers/common/libimage
Migrate the Podman code base over to `common/libimage` which replaces
`libpod/image` and a lot of glue code entirely.

Note that I tried to leave bread crumbs for changed tests.

Miscellaneous changes:

 * Some errors yield different messages which required to alter some
   tests.

 * I fixed some pre-existing issues in the code.  Others were marked as
   `//TODO`s to prevent the PR from exploding.

 * The `NamesHistory` of an image is returned as is from the storage.
   Previously, we did some filtering which I think is undesirable.
   Instead we should return the data as stored in the storage.

 * Touched handlers use the ABI interfaces where possible.

 * Local image resolution: previously Podman would match "foo" on
   "myfoo".  This behaviour has been changed and Podman will now
   only match on repository boundaries such that "foo" would match
   "my/foo" but not "myfoo".  I consider the old behaviour to be a
   bug, at the very least an exotic corner case.

 * Futhermore, "foo:none" does *not* resolve to a local image "foo"
   without tag anymore.  It's a hill I am (almost) willing to die on.

 * `image prune` prints the IDs of pruned images.  Previously, in some
   cases, the names were printed instead.  The API clearly states ID,
   so we should stick to it.

 * Compat endpoint image removal with _force_ deletes the entire not
   only the specified tag.

Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
2021-05-05 11:30:12 +02:00

101 lines
3.5 KiB
Go

package utils
import (
"fmt"
"net/http"
"github.com/containers/common/libimage"
"github.com/containers/common/pkg/filters"
"github.com/containers/image/v5/docker"
"github.com/containers/image/v5/storage"
"github.com/containers/image/v5/transports/alltransports"
"github.com/containers/image/v5/types"
"github.com/containers/podman/v3/libpod"
"github.com/gorilla/schema"
"github.com/pkg/errors"
)
// ParseDockerReference parses the specified image name to a
// `types.ImageReference` and enforces it to refer to a docker-transport
// reference.
func ParseDockerReference(name string) (types.ImageReference, error) {
dockerPrefix := fmt.Sprintf("%s://", docker.Transport.Name())
imageRef, err := alltransports.ParseImageName(name)
if err == nil && imageRef.Transport().Name() != docker.Transport.Name() {
return nil, errors.Errorf("reference %q must be a docker reference", name)
} else if err != nil {
origErr := err
imageRef, err = alltransports.ParseImageName(fmt.Sprintf("%s%s", dockerPrefix, name))
if err != nil {
return nil, errors.Wrapf(origErr, "reference %q must be a docker reference", name)
}
}
return imageRef, nil
}
// ParseStorageReference parses the specified image name to a
// `types.ImageReference` and enforces it to refer to a
// containers-storage-transport reference.
func ParseStorageReference(name string) (types.ImageReference, error) {
storagePrefix := fmt.Sprintf("%s:", storage.Transport.Name())
imageRef, err := alltransports.ParseImageName(name)
if err == nil && imageRef.Transport().Name() != docker.Transport.Name() {
return nil, errors.Errorf("reference %q must be a storage reference", name)
} else if err != nil {
origErr := err
imageRef, err = alltransports.ParseImageName(fmt.Sprintf("%s%s", storagePrefix, name))
if err != nil {
return nil, errors.Wrapf(origErr, "reference %q must be a storage reference", name)
}
}
return imageRef, nil
}
// GetImages is a common function used to get images for libpod and other compatibility
// mechanisms
func GetImages(w http.ResponseWriter, r *http.Request) ([]*libimage.Image, error) {
decoder := r.Context().Value("decoder").(*schema.Decoder)
runtime := r.Context().Value("runtime").(*libpod.Runtime)
query := struct {
All bool
Digests bool
Filter string // Docker 1.24 compatibility
}{
// This is where you can override the golang default value for one of fields
}
if err := decoder.Decode(&query, r.URL.Query()); err != nil {
return nil, err
}
if _, found := r.URL.Query()["digests"]; found && query.Digests {
UnSupportedParameter("digests")
}
filterList, err := filters.FiltersFromRequest(r)
if err != nil {
return nil, err
}
if !IsLibpodRequest(r) && len(query.Filter) > 0 { // Docker 1.24 compatibility
filterList = append(filterList, "reference="+query.Filter)
}
if !query.All {
// Filter intermediate images unless we want to list *all*.
// NOTE: it's a positive filter, so `intermediate=false` means
// to display non-intermediate images.
filterList = append(filterList, "intermediate=false")
}
listOptions := &libimage.ListImagesOptions{Filters: filterList}
return runtime.LibimageRuntime().ListImages(r.Context(), nil, listOptions)
}
func GetImage(r *http.Request, name string) (*libimage.Image, error) {
runtime := r.Context().Value("runtime").(*libpod.Runtime)
lookupOptions := &libimage.LookupImageOptions{IgnorePlatform: true}
image, _, err := runtime.LibimageRuntime().LookupImage(name, lookupOptions)
if err != nil {
return nil, err
}
return image, err
}