imagetools inspect: use buildinfo helper

Signed-off-by: CrazyMax <crazy-max@users.noreply.github.com>

go.mod

@@ -30,7 +30,7 @@ require (
 	github.com/jinzhu/gorm v1.9.2 // indirect
 	github.com/jinzhu/inflection v0.0.0-20180308033659-04140366298a // indirect
 	github.com/kardianos/osext v0.0.0-20190222173326-2bc1f35cddc0 // indirect
-	github.com/moby/buildkit v0.10.0-rc2.0.20220308185020-fdecd0ae108b
+	github.com/moby/buildkit v0.10.0
 	github.com/morikuni/aec v1.0.0
 	github.com/opencontainers/go-digest v1.0.0
 	github.com/opencontainers/image-spec v1.0.2-0.20211117181255-693428a734f5

go.sum

@@ -970,8 +970,8 @@ github.com/mitchellh/mapstructure v1.4.2 h1:6h7AQ0yhTcIsmFmnAwQls75jp2Gzs4iB8W7p
 github.com/mitchellh/mapstructure v1.4.2/go.mod h1:bFUtVrKA4DC2yAKiSyO/QUcy7e+RRV2QTWOzhPopBRo=
 github.com/mitchellh/osext v0.0.0-20151018003038-5e2d6d41470f/go.mod h1:OkQIRizQZAeMln+1tSwduZz7+Af5oFlKirV/MSYes2A=
 github.com/moby/buildkit v0.8.1/go.mod h1:/kyU1hKy/aYCuP39GZA9MaKioovHku57N6cqlKZIaiQ=
-github.com/moby/buildkit v0.10.0-rc2.0.20220308185020-fdecd0ae108b h1:plbnJxjht8Z6D3c/ga79D1+VaA/IUfNVp08J3lcDgI8=
-github.com/moby/buildkit v0.10.0-rc2.0.20220308185020-fdecd0ae108b/go.mod h1:WvwAZv8aRScHkqc/+X46cRC2CKMKpqcaX+pRvUTtPes=
+github.com/moby/buildkit v0.10.0 h1:ElHQJJdnj/VR/pfNJwhrjQJj8GXFIwVNGZh/Qbd5tVo=
+github.com/moby/buildkit v0.10.0/go.mod h1:WvwAZv8aRScHkqc/+X46cRC2CKMKpqcaX+pRvUTtPes=
 github.com/moby/locker v1.0.1 h1:fOXqR41zeveg4fFODix+1Ch4mj/gT0NE1XJbp/epuBg=
 github.com/moby/locker v1.0.1/go.mod h1:S7SDdo5zpBK84bzzVlKr2V0hz+7x9hWbYC/kq7oQppc=
 github.com/moby/spdystream v0.2.0 h1:cjW1zVyyoiM0T7b6UoySUFqzXMoqRckQtXwGPiBhOM8=

util/imagetools/printers.go

@@ -2,7 +2,6 @@ package imagetools
 
 import (
 	"context"
-	"encoding/base64"
 	"encoding/json"
 	"fmt"
 	"io"
@@ -16,9 +15,9 @@ import (
 	"github.com/containerd/containerd/platforms"
 	"github.com/docker/distribution/reference"
 	binfotypes "github.com/moby/buildkit/util/buildinfo/types"
+	"github.com/moby/buildkit/util/imageutil"
 	"github.com/opencontainers/go-digest"
 	ocispecs "github.com/opencontainers/image-spec/specs-go/v1"
-	"github.com/pkg/errors"
 	"golang.org/x/sync/errgroup"
 )
 
@@ -123,7 +122,7 @@ func (p *Printer) Print(raw bool, out io.Writer) error {
 				} else if img != nil {
 					imageconfigs[platforms.Format(platform)] = img
 				}
-				if bi, err := p.getBuildInfo(dtic); err != nil {
+				if bi, err := imageutil.BuildInfo(dtic); err != nil {
 					return err
 				} else if bi != nil {
 					buildinfos[platforms.Format(platform)] = bi
@@ -335,23 +334,3 @@ func (p *Printer) getImageConfig(platform *ocispecs.Platform) (*ocispecs.Image,
 	}
 	return img, dtic, nil
 }
-
-func (p *Printer) getBuildInfo(dtic []byte) (*binfotypes.BuildInfo, error) {
-	var binfo *binfotypes.BuildInfo
-	if len(dtic) > 0 {
-		var biconfig binfotypes.ImageConfig
-		if err := json.Unmarshal(dtic, &biconfig); err != nil {
-			return nil, errors.Wrap(err, "failed to unmarshal image config")
-		}
-		if len(biconfig.BuildInfo) > 0 {
-			dtbi, err := base64.StdEncoding.DecodeString(biconfig.BuildInfo)
-			if err != nil {
-				return nil, errors.Wrap(err, "failed to decode build info")
-			}
-			if err = json.Unmarshal(dtbi, &binfo); err != nil {
-				return nil, errors.Wrap(err, "failed to unmarshal build info")
-			}
-		}
-	}
-	return binfo, nil
-}

vendor/github.com/moby/buildkit/util/imageutil/buildinfo.go

@@ -0,0 +1,32 @@
+package imageutil
+
+import (
+	"encoding/base64"
+	"encoding/json"
+
+	binfotypes "github.com/moby/buildkit/util/buildinfo/types"
+	"github.com/pkg/errors"
+)
+
+// BuildInfo returns build info from image config.
+func BuildInfo(dt []byte) (*binfotypes.BuildInfo, error) {
+	if len(dt) == 0 {
+		return nil, nil
+	}
+	var config binfotypes.ImageConfig
+	if err := json.Unmarshal(dt, &config); err != nil {
+		return nil, errors.Wrap(err, "failed to unmarshal image config")
+	}
+	if len(config.BuildInfo) == 0 {
+		return nil, nil
+	}
+	dtbi, err := base64.StdEncoding.DecodeString(config.BuildInfo)
+	if err != nil {
+		return nil, err
+	}
+	var bi binfotypes.BuildInfo
+	if err = json.Unmarshal(dtbi, &bi); err != nil {
+		return nil, errors.Wrap(err, "failed to decode buildinfo from image config")
+	}
+	return &bi, nil
+}

vendor/modules.txt

@@ -294,7 +294,7 @@ github.com/miekg/pkcs11
 github.com/mitchellh/go-wordwrap
 # github.com/mitchellh/mapstructure v1.4.2
 github.com/mitchellh/mapstructure
-# github.com/moby/buildkit v0.10.0-rc2.0.20220308185020-fdecd0ae108b
+# github.com/moby/buildkit v0.10.0
 ## explicit
 github.com/moby/buildkit/api/services/control
 github.com/moby/buildkit/api/types