Merge pull request #910 from owncloud/thumbnails-rewrite

change image library and refactor thumbnails service

changelog/unreleased/change-thumbnails-library.md

@@ -0,0 +1,6 @@
+Change: replace the library which scales the images
+
+The library went out of support.
+Also did some refactoring of the thumbnails service code.
+
+https://github.com/owncloud/ocis/pull/910

ocis/go.sum

@@ -160,8 +160,6 @@ github.com/aws/aws-sdk-go v1.23.19/go.mod h1:KmX6BPdI08NWTb3/sm4ZGu5ShLoqVDhKgpi
 github.com/aws/aws-sdk-go v1.25.31/go.mod h1:KmX6BPdI08NWTb3/sm4ZGu5ShLoqVDhKgpiN924inxo=
 github.com/aws/aws-sdk-go v1.28.2/go.mod h1:KmX6BPdI08NWTb3/sm4ZGu5ShLoqVDhKgpiN924inxo=
 github.com/aws/aws-sdk-go v1.33.19/go.mod h1:5zCpMtNQVjRREroY7sYe8lOMRSxkhG6MZveU8YkpAk0=
-github.com/aws/aws-sdk-go v1.35.9 h1:b1HiUpdkFLJyoOQ7zas36YHzjNHH0ivHx/G5lWBeg+U=
-github.com/aws/aws-sdk-go v1.35.9/go.mod h1:tlPOdRjfxPBpNIwqDj61rmsnA85v9jc0Ps9+muhnW+k=
 github.com/aws/aws-sdk-go v1.35.23 h1:SCP0d0XvyJTDmfnHEQPvBaYi3kea1VNUo7uQmkVgFts=
 github.com/aws/aws-sdk-go v1.35.23/go.mod h1:tlPOdRjfxPBpNIwqDj61rmsnA85v9jc0Ps9+muhnW+k=
 github.com/aws/aws-xray-sdk-go v0.9.4/go.mod h1:XtMKdBQfpVut+tJEwI7+dJFRxxRdxHDyVNp2tHXRq04=
@@ -217,7 +215,6 @@ github.com/bwmarrin/discordgo v0.20.2/go.mod h1:O9S4p+ofTFwB02em7jkpkV8M3R0/PUVO
 github.com/c-bata/go-prompt v0.2.5/go.mod h1:vFnjEGDIIA/Lib7giyE4E9c50Lvl8j0S+7FVlAwDAVw=
 github.com/caddyserver/certmagic v0.10.6 h1:sCya6FmfaN74oZE46kqfaFOVoROD/mF36rTQfjN7TZc=
 github.com/caddyserver/certmagic v0.10.6/go.mod h1:Y8jcUBctgk/IhpAzlHKfimZNyXCkfGgRTC0orl8gROQ=
-github.com/cenkalti/backoff v2.1.1+incompatible h1:tKJnvO2kl0zmb/jA5UKAt4VoEVw1qxKWjE/Bpp46npY=
 github.com/cenkalti/backoff v2.1.1+incompatible/go.mod h1:90ReRw6GdpyfrHakVjL/QHaoyV4aDUVVkXQJJJ3NXXM=
 github.com/cenkalti/backoff v2.2.1+incompatible h1:tNowT99t7UNflLxfYYSlKYsBpXdEet03Pg2g16Swow4=
 github.com/cenkalti/backoff v2.2.1+incompatible/go.mod h1:90ReRw6GdpyfrHakVjL/QHaoyV4aDUVVkXQJJJ3NXXM=
@@ -233,7 +230,6 @@ github.com/cespare/xxhash v1.1.0/go.mod h1:XrSqR1VqqWfGrhpAt58auRo0WTKS1nRRg3ghf
 github.com/cespare/xxhash/v2 v2.1.0/go.mod h1:dgIUBU3pDso/gPgZ1osOZ0iQf77oPR28Tjxl5dIMyVM=
 github.com/cespare/xxhash/v2 v2.1.1 h1:6MnRN8NT7+YBpUIWxHtefFZOKTAPgGjpQSxqLNn0+qY=
 github.com/cespare/xxhash/v2 v2.1.1/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
-github.com/cheekybits/genny v1.0.0 h1:uGGa4nei+j20rOSeDeP5Of12XVm7TGUd4dJA9RDitfE=
 github.com/cheekybits/genny v1.0.0/go.mod h1:+tQajlRqAUrPI7DOSpB0XAqZYtQakVtB7wXkRAgjxjQ=
 github.com/cheggaaa/pb v1.0.28/go.mod h1:pQciLPpbU0oxA0h+VJYYLxO+XeDQb5pZijXscXHm81s=
 github.com/cheggaaa/pb v1.0.29/go.mod h1:W40334L7FMC5JKWldsTWbdGjLo0RxUKK73K+TuPxX30=
@@ -295,7 +291,6 @@ github.com/cpuguy83/go-md2man/v2 v2.0.0 h1:EoUDS0afbrsXAZ9YQ9jdu/mZ2sXgT1/2yyNng
 github.com/cpuguy83/go-md2man/v2 v2.0.0/go.mod h1:maD7wRr/U5Z6m/iR4s+kqSMx2CaBsrgA7czyZG/E6dU=
 github.com/creack/pty v1.1.7/go.mod h1:lj5s0c3V2DBrqTV7llrYr5NG6My20zk30Fl46Y7DoTY=
 github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
-github.com/crewjam/httperr v0.0.0-20190612203328-a946449404da h1:WXnT88cFG2davqSFqvaFfzkSMC0lqh/8/rKZ+z7tYvI=
 github.com/crewjam/httperr v0.0.0-20190612203328-a946449404da/go.mod h1:+rmNIXRvYMqLQeR4DHyTvs6y0MEMymTz4vyFpFkKTPs=
 github.com/crewjam/httperr v0.2.0 h1:b2BfXR8U3AlIHwNeFFvZ+BV1LFvKLlzMjzaTnZMybNo=
 github.com/crewjam/httperr v0.2.0/go.mod h1:Jlz+Sg/XqBQhyMjdDiC+GNNRzZTD7x39Gu3pglZ5oH4=
@@ -305,20 +300,11 @@ github.com/cs3org/cato v0.0.0-20200626150132-28a40e643719/go.mod h1:XJEZ3/EQuI3B
 github.com/cs3org/cato v0.0.0-20200828125504-e418fc54dd5e/go.mod h1:XJEZ3/EQuI3BXTp/6DUzFr850vlxq11I6satRtz0YQ4=
 github.com/cs3org/go-cs3apis v0.0.0-20191128165347-19746c015c83/go.mod h1:IsVGyZrOLUQD48JIhlM/xb3Vz6He5o2+W0ZTfUGY+IU=
 github.com/cs3org/go-cs3apis v0.0.0-20200730121022-c4f3d4f7ddfd/go.mod h1:UXha4TguuB52H14EMoSsCqDj7k8a/t7g4gVP+bgY5LY=
-github.com/cs3org/go-cs3apis v0.0.0-20201007120910-416ed6cf8b00 h1:LVl25JaflluOchVvaHWtoCynm5OaM+VNai0IYkcCSe0=
 github.com/cs3org/go-cs3apis v0.0.0-20201007120910-416ed6cf8b00/go.mod h1:UXha4TguuB52H14EMoSsCqDj7k8a/t7g4gVP+bgY5LY=
 github.com/cs3org/go-cs3apis v0.0.0-20201118090759-87929f5bae21 h1:mZpylrgnCgSeaZ5EznvHIPIKuaQHMHZDi2wkJtk4M8Y=
 github.com/cs3org/go-cs3apis v0.0.0-20201118090759-87929f5bae21/go.mod h1:UXha4TguuB52H14EMoSsCqDj7k8a/t7g4gVP+bgY5LY=
 github.com/cs3org/reva v0.0.2-0.20200115110931-4c7513415ec5/go.mod h1:Hk3eCcdhtv4eIhKvRK736fQuOyS1HuHnUcz0Dq6NK1A=
 github.com/cs3org/reva v1.1.0/go.mod h1:fBzTrNuAKdQ62ybjpdu8nyhBin90/3/3s6DGQDCdBp4=
-github.com/cs3org/reva v1.3.1-0.20201023144216-cdb3d6688da5 h1:nkmk9ywGKpJthWeMYGBiXh4DD6mTCOZLRfGDjp9rsKg=
-github.com/cs3org/reva v1.3.1-0.20201023144216-cdb3d6688da5/go.mod h1:V50GXMiT524bvxACFkrkZqBzK4BoXLSprxcPshBlSOY=
-github.com/cs3org/reva v1.3.1-0.20201112131316-1c425035c8a2 h1:vBgCFcQMxcu7wDPo44Onw3ZXXZc3DrARz6V8rECZjVs=
-github.com/cs3org/reva v1.3.1-0.20201112131316-1c425035c8a2/go.mod h1:oqkkfe0g/dvrFFrmwd/VVfmrxhfswHp7+IB2PNeADSE=
-github.com/cs3org/reva v1.4.1-0.20201120104232-f5afafc04c3b/go.mod h1:oqkkfe0g/dvrFFrmwd/VVfmrxhfswHp7+IB2PNeADSE=
-github.com/cs3org/reva v1.4.1-0.20201123062044-b2c4af4e897d/go.mod h1:MTBlfobTE8W2hgXQ9+r+75jpJa1TxD04IZm5TpS9H48=
-github.com/cs3org/reva v1.4.1-0.20201125144025-57da0c27434c h1:x7HkQqFGA+7FJUfyDO9tM2gF5i540PQePx+1kGUUYgA=
-github.com/cs3org/reva v1.4.1-0.20201125144025-57da0c27434c/go.mod h1:MTBlfobTE8W2hgXQ9+r+75jpJa1TxD04IZm5TpS9H48=
 github.com/cs3org/reva v1.4.1-0.20201125172625-a5ab834a565d h1:Sr6ZWGjTds5cWDei3mJev2+RPJ0iejKnVrYklr5mO+M=
 github.com/cs3org/reva v1.4.1-0.20201125172625-a5ab834a565d/go.mod h1:MTBlfobTE8W2hgXQ9+r+75jpJa1TxD04IZm5TpS9H48=
 github.com/cznic/b v0.0.0-20181122101859-a26611c4d92d h1:SwD98825d6bdB+pEuTxWOXiSjBrHdOl/UVp75eI7JT8=
@@ -1119,7 +1105,6 @@ github.com/nats-io/nuid v1.0.1/go.mod h1:19wcPz3Ph3q0Jbyiqsd0kePYG7A95tJPxeL+1OS
 github.com/nats-io/stan.go v0.5.0/go.mod h1:dYqB+vMN3C2F9pT1FRQpg9eHbjPj6mP0yYuyBNuXHZE=
 github.com/nbio/st v0.0.0-20140626010706-e9e8d9816f32/go.mod h1:9wM+0iRr9ahx58uYLpLIr5fm8diHn0JbqRycJi6w0Ms=
 github.com/netdata/go-orchestrator v0.0.0-20190905093727-c793edba0e8f/go.mod h1:ECF8anFVCt/TfTIWVPgPrNaYJXtAtpAOF62ugDbw41A=
-github.com/nfnt/resize v0.0.0-20180221191011-83c6a9932646 h1:zYyBkD/k9seD2A7fsi6Oo2LfFZAehjjQMERAvZLEDnQ=
 github.com/nfnt/resize v0.0.0-20180221191011-83c6a9932646/go.mod h1:jpp1/29i3P1S/RLdc7JQKbRpFeM1dOBd8T9ki5s+AY8=
 github.com/nicksnyder/go-i18n v1.10.0/go.mod h1:HrK7VCrbOvQoUAQ7Vpy7i87N7JZZZ7R2xBGjv0j365Q=
 github.com/niemeyer/pretty v0.0.0-20200227124842-a10e7caefd8e h1:fD57ERR4JtEqsWbfPhv4DMiApHyliiK5xCTNVSPiaAs=
@@ -1601,6 +1586,7 @@ golang.org/x/exp v0.0.0-20200207192155-f17229e696bd/go.mod h1:J/WKrq2StrnmMY6+EH
 golang.org/x/exp v0.0.0-20200224162631-6cc2880d07d6/go.mod h1:3jZMyOhIsHpP37uCMkUooju7aAi5cS1Q23tOzKc+0MU=
 golang.org/x/exp v0.0.0-20200331195152-e8c3332aa8e5/go.mod h1:4M0jN8W1tt0AVLNr8HDosyJCDCDuyL9N9+3m7wDWgKw=
 golang.org/x/image v0.0.0-20190227222117-0694c2d4d067/go.mod h1:kZ7UVZpmo3dzQBMxlp+ypCbDeSB+sBbTgSJuh5dn5js=
+golang.org/x/image v0.0.0-20190802002840-cff245a6509b h1:+qEpEAPhDZ1o0x3tHzZTQDArnOixOzGD9HUJfcg0mb4=
 golang.org/x/image v0.0.0-20190802002840-cff245a6509b/go.mod h1:FeLwcggjj3mMvU+oOTbSwawSJRM1uh48EjtB4UJZlP0=
 golang.org/x/lint v0.0.0-20190227174305-5b3e6a55c961/go.mod h1:wehouNa3lNwaWXcvxsM5YxQ5yQlVC4a0KAMCusXpPoU=
 golang.org/x/lint v0.0.0-20190301231843-5614ed5bae6f/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE=
@@ -1782,7 +1768,6 @@ golang.org/x/sys v0.0.0-20200720211630-cb9d2d5c5666/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20200909081042-eff7692f9009/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200918174421-af09f7315aff/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20201022201747-fb209a7c41cd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20201101102859-da207088b7d1 h1:a/mKvvZr9Jcc8oKfcmgzyp7OwF73JPWsQLvH1z2Kxck=
 golang.org/x/sys v0.0.0-20201101102859-da207088b7d1/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/text v0.0.0-20160726164857-2910a502d2bf/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=

thumbnails/go.mod

@@ -8,6 +8,7 @@ require (
 	contrib.go.opencensus.io/exporter/zipkin v0.1.1
 	github.com/UnnoTed/fileb0x v1.1.4
 	github.com/cespare/reflex v0.2.0
+	github.com/cs3org/go-cs3apis v0.0.0-20201007120910-416ed6cf8b00
 	github.com/go-test/deep v1.0.2-0.20181118220953-042da051cf31 // indirect
 	github.com/gogo/protobuf v1.3.1 // indirect
 	github.com/golang/protobuf v1.4.3
@@ -31,7 +32,9 @@ require (
 	github.com/stretchr/testify v1.6.1
 	go.opencensus.io v0.22.5
 	golang.org/x/crypto v0.0.0-20200820211705-5c72a883971a // indirect
+	golang.org/x/image v0.0.0-20190802002840-cff245a6509b
 	google.golang.org/genproto v0.0.0-20200918140846-d0d605568037 // indirect
+	google.golang.org/grpc v1.33.1
 	gopkg.in/square/go-jose.v2 v2.5.1
 )
 

thumbnails/go.sum

@@ -1212,6 +1212,7 @@ golang.org/x/exp v0.0.0-20200207192155-f17229e696bd/go.mod h1:J/WKrq2StrnmMY6+EH
 golang.org/x/exp v0.0.0-20200224162631-6cc2880d07d6/go.mod h1:3jZMyOhIsHpP37uCMkUooju7aAi5cS1Q23tOzKc+0MU=
 golang.org/x/exp v0.0.0-20200331195152-e8c3332aa8e5/go.mod h1:4M0jN8W1tt0AVLNr8HDosyJCDCDuyL9N9+3m7wDWgKw=
 golang.org/x/image v0.0.0-20190227222117-0694c2d4d067/go.mod h1:kZ7UVZpmo3dzQBMxlp+ypCbDeSB+sBbTgSJuh5dn5js=
+golang.org/x/image v0.0.0-20190802002840-cff245a6509b h1:+qEpEAPhDZ1o0x3tHzZTQDArnOixOzGD9HUJfcg0mb4=
 golang.org/x/image v0.0.0-20190802002840-cff245a6509b/go.mod h1:FeLwcggjj3mMvU+oOTbSwawSJRM1uh48EjtB4UJZlP0=
 golang.org/x/lint v0.0.0-20190227174305-5b3e6a55c961/go.mod h1:wehouNa3lNwaWXcvxsM5YxQ5yQlVC4a0KAMCusXpPoU=
 golang.org/x/lint v0.0.0-20190301231843-5614ed5bae6f/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE=

thumbnails/pkg/service/v0/service.go

@@ -2,6 +2,7 @@ package svc
 
 import (
 	"context"
+	"image"
 
 	"gopkg.in/square/go-jose.v2/jwt"
 
@@ -10,39 +11,37 @@ import (
 	v0proto "github.com/owncloud/ocis/thumbnails/pkg/proto/v0"
 	"github.com/owncloud/ocis/thumbnails/pkg/thumbnail"
 	"github.com/owncloud/ocis/thumbnails/pkg/thumbnail/imgsource"
-	"github.com/owncloud/ocis/thumbnails/pkg/thumbnail/resolution"
 	"github.com/pkg/errors"
 )
 
 // NewService returns a service implementation for Service.
 func NewService(opts ...Option) v0proto.ThumbnailServiceHandler {
 	options := newOptions(opts...)
 	logger := options.Logger
-	resolutions, err := resolution.New(options.Config.Thumbnail.Resolutions)
+	resolutions, err := thumbnail.ParseResolutions(options.Config.Thumbnail.Resolutions)
 	if err != nil {
 		logger.Fatal().Err(err).Msg("resolutions not configured correctly")
 	}
 	svc := Thumbnail{
 		serviceID: options.Config.Server.Namespace + "." + options.Config.Server.Name,
 		manager: thumbnail.NewSimpleManager(
+			resolutions,
 			options.ThumbnailStorage,
 			logger,
 		),
-		resolutions: resolutions,
-		source:      options.ImageSource,
-		logger:      logger,
+		source: options.ImageSource,
+		logger: logger,
 	}
 
 	return svc
 }
 
 // Thumbnail implements the GRPC handler.
 type Thumbnail struct {
-	serviceID   string
-	manager     thumbnail.Manager
-	resolutions resolution.Resolutions
-	source      imgsource.Source
-	logger      log.Logger
+	serviceID string
+	manager   thumbnail.Manager
+	source    imgsource.Source
+	logger    log.Logger
 }
 
 // GetThumbnail retrieves a thumbnail for an image
@@ -52,7 +51,6 @@ func (g Thumbnail) GetThumbnail(ctx context.Context, req *v0proto.GetRequest, rs
 		g.logger.Debug().Str("filetype", req.Filetype.String()).Msg("unsupported filetype")
 		return nil
 	}
-	r := g.resolutions.ClosestMatch(int(req.Width), int(req.Height))
 
 	auth := req.Authorization
 	if auth == "" {
@@ -64,8 +62,7 @@ func (g Thumbnail) GetThumbnail(ctx context.Context, req *v0proto.GetRequest, rs
 	}
 
 	tr := thumbnail.Request{
-		Resolution: r,
-		ImagePath:  req.Filepath,
+		Resolution: image.Rect(0, 0, int(req.Width), int(req.Height)),
 		Encoder:    encoder,
 		ETag:       req.Etag,
 		Username:   username,
@@ -78,8 +75,8 @@ func (g Thumbnail) GetThumbnail(ctx context.Context, req *v0proto.GetRequest, rs
 		return nil
 	}
 
-	sCtx := imgsource.WithAuthorization(ctx, auth)
-	img, err := g.source.Get(sCtx, tr.ImagePath)
+	sCtx := imgsource.ContextSetAuthorization(ctx, auth)
+	img, err := g.source.Get(sCtx, req.Filepath)
 	if err != nil {
 		return merrors.InternalServerError(g.serviceID, "could not get image from source: %v", err.Error())
 	}

thumbnails/pkg/thumbnail/imgsource/filesystem.go

@@ -2,12 +2,12 @@ package imgsource
 
 import (
 	"context"
-	"fmt"
 	"image"
 	"os"
 	"path/filepath"
 
 	"github.com/owncloud/ocis/thumbnails/pkg/config"
+	"github.com/pkg/errors"
 )
 
 // NewFileSystemSource return a new FileSystem instance
@@ -27,12 +27,12 @@ func (s FileSystem) Get(ctx context.Context, file string) (image.Image, error) {
 	imgPath := filepath.Join(s.basePath, file)
 	f, err := os.Open(filepath.Clean(imgPath))
 	if err != nil {
-		return nil, fmt.Errorf("failed to load the file %s from %s error %s", file, imgPath, err.Error())
+		return nil, errors.Wrapf(err, "failed to load the file %s from %s", file, imgPath)
 	}
 
 	img, _, err := image.Decode(f)
 	if err != nil {
-		return nil, err
+		return nil, errors.Wrap(err, "Get: Decode:")
 	}
 
 	return img, nil

thumbnails/pkg/thumbnail/imgsource/imgsource.go

@@ -16,15 +16,16 @@ type Source interface {
 	Get(ctx context.Context, path string) (image.Image, error)
 }
 
-// WithAuthorization puts the authorization in the context.
-func WithAuthorization(parent context.Context, authorization string) context.Context {
+// ContextSetAuthorization puts the authorization in the context.
+func ContextSetAuthorization(parent context.Context, authorization string) context.Context {
 	return context.WithValue(parent, auth, authorization)
 }
 
-func authorization(ctx context.Context) string {
+// ContextGetAuthorization gets the authorization from the context.
+func ContextGetAuthorization(ctx context.Context) (string, bool) {
 	val := ctx.Value(auth)
 	if val == nil {
-		return ""
+		return "", false
 	}
-	return val.(string)
+	return val.(string), true
 }

thumbnails/pkg/thumbnail/imgsource/webdav.go

@@ -10,6 +10,7 @@ import (
 	"path"
 
 	"github.com/owncloud/ocis/thumbnails/pkg/config"
+	"github.com/pkg/errors"
 )
 
 // NewWebDavSource creates a new webdav instance.
@@ -32,21 +33,21 @@ func (s WebDav) Get(ctx context.Context, file string) (image.Image, error) {
 	u.Path = path.Join(u.Path, file)
 	req, err := http.NewRequest(http.MethodGet, u.String(), nil)
 	if err != nil {
-		return nil, fmt.Errorf("could not get the image \"%s\" error: %s", file, err.Error())
+		return nil, errors.Wrapf(err, `could not get the image "%s"`, file)
 	}
 
 	http.DefaultTransport.(*http.Transport).TLSClientConfig = &tls.Config{InsecureSkipVerify: s.insecure}
 
-	auth := authorization(ctx)
-	if auth == "" {
+	auth, ok := ContextGetAuthorization(ctx)
+	if !ok {
 		return nil, fmt.Errorf("could not get image \"%s\" error: authorization is missing", file)
 	}
 	req.Header.Add("Authorization", auth)
 
 	client := &http.Client{}
 	resp, err := client.Do(req)
 	if err != nil {
-		return nil, fmt.Errorf("could not get the image \"%s\" error: %s", file, err.Error())
+		return nil, errors.Wrapf(err, `could not get the image "%s"`, file)
 	}
 
 	if resp.StatusCode != http.StatusOK {
@@ -55,7 +56,7 @@ func (s WebDav) Get(ctx context.Context, file string) (image.Image, error) {
 
 	img, _, err := image.Decode(resp.Body)
 	if err != nil {
-		return nil, fmt.Errorf("could not decode the image \"%s\". error: %s", file, err.Error())
+		return nil, errors.Wrapf(err, `could not decode the image "%s"`, file)
 	}
 	return img, nil
 }