From 733a2a0af92d6e1e1cf266b76fe89c474bb87d7d Mon Sep 17 00:00:00 2001
From: ashpect <ashishndiitr@gmail.com>
Date: Thu, 23 May 2024 22:36:16 +0530
Subject: [PATCH] update vendor

Signed-off-by: ashpect <ashishndiitr@gmail.com>
---
 .../go-containerregistry/pkg/v1/layout/gc.go  | 137 ++++++++++++++++++
 vendor/modules.txt                            |   1 +
 2 files changed, 138 insertions(+)
 create mode 100644 vendor/github.com/google/go-containerregistry/pkg/v1/layout/gc.go

diff --git a/vendor/github.com/google/go-containerregistry/pkg/v1/layout/gc.go b/vendor/github.com/google/go-containerregistry/pkg/v1/layout/gc.go
new file mode 100644
index 000000000..5fdb2c05d
--- /dev/null
+++ b/vendor/github.com/google/go-containerregistry/pkg/v1/layout/gc.go
@@ -0,0 +1,137 @@
+// Copyright 2018 Google LLC All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// This is an EXPERIMENTAL package, and may change in arbitrary ways without notice.
+package layout
+
+import (
+	"fmt"
+	"io/fs"
+	"path/filepath"
+	"strings"
+
+	v1 "github.com/google/go-containerregistry/pkg/v1"
+)
+
+// GarbageCollect removes unreferenced blobs from the oci-layout
+//
+//	This is an experimental api, and not subject to any stability guarantees
+//	We may abandon it at any time, without prior notice.
+//	Deprecated: Use it at your own risk!
+func (l Path) GarbageCollect() ([]v1.Hash, error) {
+	idx, err := l.ImageIndex()
+	if err != nil {
+		return nil, err
+	}
+	blobsToKeep := map[string]bool{}
+	if err := l.garbageCollectImageIndex(idx, blobsToKeep); err != nil {
+		return nil, err
+	}
+	blobsDir := l.path("blobs")
+	removedBlobs := []v1.Hash{}
+
+	err = filepath.WalkDir(blobsDir, func(path string, d fs.DirEntry, err error) error {
+		if err != nil {
+			return err
+		}
+
+		if d.IsDir() {
+			return nil
+		}
+
+		rel, err := filepath.Rel(blobsDir, path)
+		if err != nil {
+			return err
+		}
+		hashString := strings.Replace(rel, "/", ":", 1)
+		if present := blobsToKeep[hashString]; !present {
+			h, err := v1.NewHash(hashString)
+			if err != nil {
+				return err
+			}
+			removedBlobs = append(removedBlobs, h)
+		}
+		return nil
+	})
+
+	if err != nil {
+		return nil, err
+	}
+
+	return removedBlobs, nil
+}
+
+func (l Path) garbageCollectImageIndex(index v1.ImageIndex, blobsToKeep map[string]bool) error {
+	idxm, err := index.IndexManifest()
+	if err != nil {
+		return err
+	}
+
+	h, err := index.Digest()
+	if err != nil {
+		return err
+	}
+
+	blobsToKeep[h.String()] = true
+
+	for _, descriptor := range idxm.Manifests {
+		if descriptor.MediaType.IsImage() {
+			img, err := index.Image(descriptor.Digest)
+			if err != nil {
+				return err
+			}
+			if err := l.garbageCollectImage(img, blobsToKeep); err != nil {
+				return err
+			}
+		} else if descriptor.MediaType.IsIndex() {
+			idx, err := index.ImageIndex(descriptor.Digest)
+			if err != nil {
+				return err
+			}
+			if err := l.garbageCollectImageIndex(idx, blobsToKeep); err != nil {
+				return err
+			}
+		} else {
+			return fmt.Errorf("gc: unknown media type: %s", descriptor.MediaType)
+		}
+	}
+	return nil
+}
+
+func (l Path) garbageCollectImage(image v1.Image, blobsToKeep map[string]bool) error {
+	h, err := image.Digest()
+	if err != nil {
+		return err
+	}
+	blobsToKeep[h.String()] = true
+
+	h, err = image.ConfigName()
+	if err != nil {
+		return err
+	}
+	blobsToKeep[h.String()] = true
+
+	ls, err := image.Layers()
+	if err != nil {
+		return err
+	}
+	for _, l := range ls {
+		h, err := l.Digest()
+		if err != nil {
+			return err
+		}
+		blobsToKeep[h.String()] = true
+	}
+	return nil
+}
diff --git a/vendor/modules.txt b/vendor/modules.txt
index cfb803490..fe440594b 100644
--- a/vendor/modules.txt
+++ b/vendor/modules.txt
@@ -196,6 +196,7 @@ github.com/google/go-containerregistry/pkg/v1
 github.com/google/go-containerregistry/pkg/v1/empty
 github.com/google/go-containerregistry/pkg/v1/fake
 github.com/google/go-containerregistry/pkg/v1/google
+github.com/google/go-containerregistry/pkg/v1/layout
 github.com/google/go-containerregistry/pkg/v1/match
 github.com/google/go-containerregistry/pkg/v1/mutate
 github.com/google/go-containerregistry/pkg/v1/partial