From 7ac8000cc1925c3c46a3afcd4ff23b1d09bddfe3 Mon Sep 17 00:00:00 2001
From: Qi Wang <qiwan@redhat.com>
Date: Tue, 22 Sep 2020 16:24:31 -0400
Subject: fix allowing inspect manifest of non-local image
Add support of `podman manifest inspect` returning manifest list of non-local manifest.
Close #https://github.com/containers/podman/issues/7726
Signed-off-by: Qi Wang <qiwan@redhat.com>
---
pkg/api/handlers/libpod/manifests.go | 17 +++++---
pkg/domain/infra/abi/manifest.go | 85 ++++++++++++++++++++++++++++++------
2 files changed, 81 insertions(+), 21 deletions(-)
(limited to 'pkg')
diff --git a/pkg/api/handlers/libpod/manifests.go b/pkg/api/handlers/libpod/manifests.go
index 8e65248e2..2031dd42f 100644
--- a/pkg/api/handlers/libpod/manifests.go
+++ b/pkg/api/handlers/libpod/manifests.go
@@ -6,11 +6,13 @@ import (
"github.com/containers/buildah/manifests"
copy2 "github.com/containers/image/v5/copy"
+ "github.com/containers/image/v5/manifest"
"github.com/containers/image/v5/transports/alltransports"
"github.com/containers/podman/v2/libpod"
"github.com/containers/podman/v2/libpod/image"
"github.com/containers/podman/v2/pkg/api/handlers"
"github.com/containers/podman/v2/pkg/api/handlers/utils"
+ "github.com/containers/podman/v2/pkg/domain/infra/abi"
"github.com/gorilla/schema"
"github.com/opencontainers/go-digest"
"github.com/pkg/errors"
@@ -48,17 +50,18 @@ func ManifestCreate(w http.ResponseWriter, r *http.Request) {
func ManifestInspect(w http.ResponseWriter, r *http.Request) {
runtime := r.Context().Value("runtime").(*libpod.Runtime)
name := utils.GetName(r)
- newImage, err := runtime.ImageRuntime().NewFromLocal(name)
- if err != nil {
- utils.ImageNotFound(w, name, err)
+ imageEngine := abi.ImageEngine{Libpod: runtime}
+ inspectReport, inspectError := imageEngine.ManifestInspect(r.Context(), name)
+ if inspectError != nil {
+ utils.Error(w, "Something went wrong.", http.StatusNotFound, inspectError)
return
}
- data, err := newImage.InspectManifest()
- if err != nil {
- utils.InternalServerError(w, err)
+ var list manifest.Schema2List
+ if err := json.Unmarshal(inspectReport, &list); err != nil {
+ utils.Error(w, "Something went wrong.", http.StatusInternalServerError, errors.Wrap(err, "Unmarshal()"))
return
}
- utils.WriteResponse(w, http.StatusOK, data)
+ utils.WriteResponse(w, http.StatusOK, &list)
}
func ManifestAdd(w http.ResponseWriter, r *http.Request) {
diff --git a/pkg/domain/infra/abi/manifest.go b/pkg/domain/infra/abi/manifest.go
index 672d0a69f..6c518e678 100644
--- a/pkg/domain/infra/abi/manifest.go
+++ b/pkg/domain/infra/abi/manifest.go
@@ -3,6 +3,7 @@
package abi
import (
+ "bytes"
"context"
"encoding/json"
"fmt"
@@ -11,15 +12,17 @@ import (
"strings"
"github.com/containers/buildah/manifests"
+ buildahManifests "github.com/containers/buildah/pkg/manifests"
+ "github.com/containers/buildah/util"
buildahUtil "github.com/containers/buildah/util"
cp "github.com/containers/image/v5/copy"
"github.com/containers/image/v5/docker"
"github.com/containers/image/v5/manifest"
+ "github.com/containers/image/v5/transports"
"github.com/containers/image/v5/transports/alltransports"
"github.com/containers/image/v5/types"
libpodImage "github.com/containers/podman/v2/libpod/image"
"github.com/containers/podman/v2/pkg/domain/entities"
- "github.com/containers/podman/v2/pkg/util"
"github.com/opencontainers/go-digest"
imgspecv1 "github.com/opencontainers/image-spec/specs-go/v1"
@@ -41,28 +44,82 @@ func (ir *ImageEngine) ManifestCreate(ctx context.Context, names, images []strin
// ManifestInspect returns the content of a manifest list or image
func (ir *ImageEngine) ManifestInspect(ctx context.Context, name string) ([]byte, error) {
- dockerPrefix := fmt.Sprintf("%s://", docker.Transport.Name())
- _, err := alltransports.ParseImageName(name)
+ if newImage, err := ir.Libpod.ImageRuntime().NewFromLocal(name); err == nil {
+ // return the manifest in local storage
+ if list, err := newImage.InspectManifest(); err == nil {
+ buf, err := json.MarshalIndent(list, "", " ")
+ if err != nil {
+ return buf, errors.Wrapf(err, "error rendering manifest %s for display", name)
+ }
+ return buf, nil
+ // no return if local image is not a list of images type
+ // continue on getting valid manifest through remote serice
+ } else if errors.Cause(err) != buildahManifests.ErrManifestTypeNotSupported {
+ return nil, errors.Wrapf(err, "loading manifest %q", name)
+ }
+ }
+ sc := ir.Libpod.SystemContext()
+ refs, err := util.ResolveNameToReferences(ir.Libpod.GetStore(), sc, name)
if err != nil {
- _, err = alltransports.ParseImageName(dockerPrefix + name)
+ return nil, err
+ }
+ var (
+ latestErr error
+ result []byte
+ manType string
+ b bytes.Buffer
+ )
+ appendErr := func(e error) {
+ if latestErr == nil {
+ latestErr = e
+ } else {
+ latestErr = errors.Wrapf(latestErr, "tried %v\n", e)
+ }
+ }
+ for _, ref := range refs {
+ src, err := ref.NewImageSource(ctx, sc)
+ if err != nil {
+ appendErr(errors.Wrapf(err, "reading image %q", transports.ImageName(ref)))
+ continue
+ }
+ defer src.Close()
+
+ manifestBytes, manifestType, err := src.GetManifest(ctx, nil)
if err != nil {
- return nil, errors.Errorf("invalid image reference %q", name)
+ appendErr(errors.Wrapf(err, "loading manifest %q", transports.ImageName(ref)))
+ continue
}
+
+ if !manifest.MIMETypeIsMultiImage(manifestType) {
+ appendErr(errors.Errorf("manifest is of type %s (not a list type)", manifestType))
+ continue
+ }
+ result = manifestBytes
+ manType = manifestType
+ break
}
- image, err := ir.Libpod.ImageRuntime().New(ctx, name, "", "", nil, nil, libpodImage.SigningOptions{}, nil, util.PullImageMissing)
- if err != nil {
- return nil, errors.Wrapf(err, "reading image %q", name)
+ if len(result) == 0 && latestErr != nil {
+ return nil, latestErr
}
+ if manType != manifest.DockerV2ListMediaType {
+ listBlob, err := manifest.ListFromBlob(result, manType)
+ if err != nil {
+ return nil, errors.Wrapf(err, "error parsing manifest blob %q as a %q", string(result), manType)
+ }
+ list, err := listBlob.ConvertToMIMEType(manifest.DockerV2ListMediaType)
+ if err != nil {
+ return nil, err
+ }
+ if result, err = list.Serialize(); err != nil {
+ return nil, err
+ }
- list, err := image.InspectManifest()
- if err != nil {
- return nil, errors.Wrapf(err, "loading manifest %q", name)
}
- buf, err := json.MarshalIndent(list, "", " ")
+ err = json.Indent(&b, result, "", " ")
if err != nil {
- return buf, errors.Wrapf(err, "error rendering manifest for display")
+ return nil, errors.Wrapf(err, "error rendering manifest %s for display", name)
}
- return buf, nil
+ return b.Bytes(), nil
}
// ManifestAdd adds images to the manifest list
--
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