Remove two GetImages functions from API

[NO NEW TESTS NEEDED] This is just code cleanup.

The remote API has three different GetImages functions, which I believe
can be handled by just one function.

Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>

6 files changed, 48 insertions, 142 deletions

diff --git a/pkg/api/handlers/compat/images.go b/pkg/api/handlers/compat/images.go
index c1cc99da4..f08a7ee41 100644
--- a/pkg/api/handlers/compat/images.go
+++ b/pkg/api/handlers/compat/images.go
@@ -11,6 +11,7 @@ import (
 	"github.com/containers/buildah"
 	"github.com/containers/common/libimage"
 	"github.com/containers/common/pkg/config"
+	"github.com/containers/common/pkg/filters"
 	"github.com/containers/image/v5/manifest"
 	"github.com/containers/image/v5/types"
 	"github.com/containers/podman/v3/libpod"
@@ -404,25 +405,52 @@ func GetImage(w http.ResponseWriter, r *http.Request) {
 }
 
 func GetImages(w http.ResponseWriter, r *http.Request) {
-	images, err := utils.GetImages(w, r)
-	if err != nil {
-		utils.Error(w, "Something went wrong.", http.StatusInternalServerError, errors.Wrap(err, "Failed get images"))
+	decoder := r.Context().Value(api.DecoderKey).(*schema.Decoder)
+	runtime := r.Context().Value(api.RuntimeKey).(*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 {
+		utils.Error(w, http.StatusText(http.StatusBadRequest), http.StatusBadRequest,
+			errors.Wrapf(err, "failed to parse parameters for %s", r.URL.String()))
+		return
+	}
+	if _, found := r.URL.Query()["digests"]; found && query.Digests {
+		utils.UnSupportedParameter("digests")
 		return
 	}
 
-	summaries := make([]*entities.ImageSummary, 0, len(images))
-	for _, img := range images {
-		// If the image is a manifest list, extract as much as we can.
-		if isML, _ := img.IsManifestList(r.Context()); isML {
-			continue
+	filterList, err := filters.FiltersFromRequest(r)
+	if err != nil {
+		utils.Error(w, "Something went wrong.", http.StatusInternalServerError, err)
+		return
+	}
+	if !utils.IsLibpodRequest(r) {
+		if len(query.Filter) > 0 { // Docker 1.24 compatibility
+			filterList = append(filterList, "reference="+query.Filter)
 		}
+		filterList = append(filterList, "manifest=false")
+	}
 
-		is, err := handlers.ImageToImageSummary(img)
-		if err != nil {
-			utils.Error(w, "Something went wrong.", http.StatusInternalServerError, errors.Wrap(err, "Failed transform image summaries"))
-			return
+	imageEngine := abi.ImageEngine{Libpod: runtime}
+
+	listOptions := entities.ImageListOptions{All: query.All, Filter: filterList}
+	summaries, err := imageEngine.List(r.Context(), listOptions)
+	if err != nil {
+		utils.Error(w, "Something went wrong.", http.StatusInternalServerError, err)
+		return
+	}
+
+	if !utils.IsLibpodRequest(r) {
+		// docker adds sha256: in front of the ID
+		for _, s := range summaries {
+			s.ID = "sha256:" + s.ID
 		}
-		summaries = append(summaries, is)
 	}
 	utils.WriteResponse(w, http.StatusOK, summaries)
 }
diff --git a/pkg/api/handlers/libpod/images.go b/pkg/api/handlers/libpod/images.go
index 6e23845f0..d3dbf3023 100644
--- a/pkg/api/handlers/libpod/images.go
+++ b/pkg/api/handlers/libpod/images.go
@@ -12,7 +12,6 @@ import (
 
 	"github.com/containers/buildah"
 	"github.com/containers/common/libimage"
-	"github.com/containers/common/pkg/filters"
 	"github.com/containers/image/v5/manifest"
 	"github.com/containers/image/v5/types"
 	"github.com/containers/podman/v3/libpod"
@@ -103,48 +102,6 @@ func GetImage(w http.ResponseWriter, r *http.Request) {
 	utils.WriteResponse(w, http.StatusOK, inspect)
 }
 
-func GetImages(w http.ResponseWriter, r *http.Request) {
-	decoder := r.Context().Value(api.DecoderKey).(*schema.Decoder)
-	runtime := r.Context().Value(api.RuntimeKey).(*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 {
-		utils.Error(w, http.StatusText(http.StatusBadRequest), http.StatusBadRequest,
-			errors.Wrapf(err, "failed to parse parameters for %s", r.URL.String()))
-		return
-	}
-	if _, found := r.URL.Query()["digests"]; found && query.Digests {
-		utils.UnSupportedParameter("digests")
-		return
-	}
-
-	filterList, err := filters.FiltersFromRequest(r)
-	if err != nil {
-		utils.Error(w, "Something went wrong.", http.StatusInternalServerError, err)
-		return
-	}
-	if !utils.IsLibpodRequest(r) && len(query.Filter) > 0 { // Docker 1.24 compatibility
-		filterList = append(filterList, "reference="+query.Filter)
-	}
-
-	imageEngine := abi.ImageEngine{Libpod: runtime}
-
-	listOptions := entities.ImageListOptions{All: query.All, Filter: filterList}
-	summaries, err := imageEngine.List(r.Context(), listOptions)
-	if err != nil {
-		utils.Error(w, "Something went wrong.", http.StatusInternalServerError, err)
-		return
-	}
-
-	utils.WriteResponse(w, http.StatusOK, summaries)
-}
-
 func PruneImages(w http.ResponseWriter, r *http.Request) {
 	var (
 		err error
diff --git a/pkg/api/handlers/types.go b/pkg/api/handlers/types.go
index 588758b2c..3b821d9e7 100644
--- a/pkg/api/handlers/types.go
+++ b/pkg/api/handlers/types.go
@@ -184,46 +184,6 @@ type ExecStartConfig struct {
 	Width  uint16 `json:"w"`
 }
 
-func ImageToImageSummary(l *libimage.Image) (*entities.ImageSummary, error) {
-	options := &libimage.InspectOptions{WithParent: true, WithSize: true}
-	imageData, err := l.Inspect(context.TODO(), options)
-	if err != nil {
-		return nil, errors.Wrapf(err, "failed to obtain summary for image %s", l.ID())
-	}
-
-	containers, err := l.Containers()
-	if err != nil {
-		return nil, errors.Wrapf(err, "failed to obtain Containers for image %s", l.ID())
-	}
-	containerCount := len(containers)
-
-	isDangling, err := l.IsDangling(context.TODO())
-	if err != nil {
-		return nil, errors.Wrapf(err, "failed to check if image %s is dangling", l.ID())
-	}
-
-	is := entities.ImageSummary{
-		// docker adds sha256: in front of the ID
-		ID:           "sha256:" + l.ID(),
-		ParentId:     imageData.Parent,
-		RepoTags:     imageData.RepoTags,
-		RepoDigests:  imageData.RepoDigests,
-		Created:      l.Created().Unix(),
-		Size:         imageData.Size,
-		SharedSize:   0,
-		VirtualSize:  imageData.VirtualSize,
-		Labels:       imageData.Labels,
-		Containers:   containerCount,
-		ReadOnly:     l.IsReadOnly(),
-		Dangling:     isDangling,
-		Names:        l.Names(),
-		Digest:       string(imageData.Digest),
-		ConfigDigest: "", // TODO: libpod/image didn't set it but libimage should
-		History:      imageData.NamesHistory,
-	}
-	return &is, nil
-}
-
 func ImageDataToImageInspect(ctx context.Context, l *libimage.Image) (*ImageInspect, error) {
 	options := &libimage.InspectOptions{WithParent: true, WithSize: true}
 	info, err := l.Inspect(context.Background(), options)
diff --git a/pkg/api/handlers/utils/images.go b/pkg/api/handlers/utils/images.go
index 3f3f48193..639de9915 100644
--- a/pkg/api/handlers/utils/images.go
+++ b/pkg/api/handlers/utils/images.go
@@ -6,7 +6,6 @@ import (
 	"strings"
 
 	"github.com/containers/common/libimage"
-	"github.com/containers/common/pkg/filters"
 	"github.com/containers/image/v5/docker"
 	storageTransport "github.com/containers/image/v5/storage"
 	"github.com/containers/image/v5/transports/alltransports"
@@ -16,7 +15,6 @@ import (
 	"github.com/containers/podman/v3/pkg/util"
 	"github.com/containers/storage"
 	"github.com/docker/distribution/reference"
-	"github.com/gorilla/schema"
 	"github.com/pkg/errors"
 )
 
@@ -91,44 +89,6 @@ func ParseStorageReference(name string) (types.ImageReference, error) {
 	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(api.DecoderKey).(*schema.Decoder)
-	runtime := r.Context().Value(api.RuntimeKey).(*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(api.RuntimeKey).(*libpod.Runtime)
 	image, _, err := runtime.LibimageRuntime().LookupImage(name, nil)
diff --git a/pkg/api/server/register_images.go b/pkg/api/server/register_images.go
index d9cda8579..df48253e2 100644
--- a/pkg/api/server/register_images.go
+++ b/pkg/api/server/register_images.go
@@ -840,7 +840,7 @@ func (s *APIServer) registerImagesHandlers(r *mux.Router) error {
 	//     $ref: "#/responses/LibpodImageSummaryResponse"
 	//   500:
 	//     $ref: '#/responses/InternalError'
-	r.Handle(VersionedPath("/libpod/images/json"), s.APIHandler(libpod.GetImages)).Methods(http.MethodGet)
+	r.Handle(VersionedPath("/libpod/images/json"), s.APIHandler(compat.GetImages)).Methods(http.MethodGet)
 	// swagger:operation POST /libpod/images/load libpod ImageLoadLibpod
 	// ---
 	// tags:
diff --git a/pkg/domain/infra/abi/images_list.go b/pkg/domain/infra/abi/images_list.go
index 2ec4ad244..47b47b065 100644
--- a/pkg/domain/infra/abi/images_list.go
+++ b/pkg/domain/infra/abi/images_list.go
@@ -26,9 +26,9 @@ func (ir *ImageEngine) List(ctx context.Context, opts entities.ImageListOptions)
 
 	summaries := []*entities.ImageSummary{}
 	for _, img := range images {
-		digests := make([]string, len(img.Digests()))
-		for j, d := range img.Digests() {
-			digests[j] = string(d)
+		repoDigests, err := img.RepoDigests()
+		if err != nil {
+			return nil, errors.Wrapf(err, "getting repoDigests from image %q", img.ID())
 		}
 		isDangling, err := img.IsDangling(ctx)
 		if err != nil {
@@ -37,11 +37,12 @@ func (ir *ImageEngine) List(ctx context.Context, opts entities.ImageListOptions)
 
 		e := entities.ImageSummary{
 			ID: img.ID(),
-			//			ConfigDigest: string(img.ConfigDigest),
+			// TODO: libpod/image didn't set it but libimage should
+			// ConfigDigest: string(img.ConfigDigest),
 			Created:     img.Created().Unix(),
 			Dangling:    isDangling,
 			Digest:      string(img.Digest()),
-			RepoDigests: digests,
+			RepoDigests: repoDigests,
 			History:     img.NamesHistory(),
 			Names:       img.Names(),
 			ReadOnly:    img.IsReadOnly(),