update delete handler to use model.Name

server/manifest.go

@@ -14,7 +14,9 @@ import (
 
 type Manifest struct {
 	ManifestV2
-	Digest string `json:"-"`
+
+	filepath string
+	digest   string
 }
 
 func (m *Manifest) Size() (size int64) {
@@ -25,9 +27,28 @@ func (m *Manifest) Size() (size int64) {
 	return
 }
 
-func ParseNamedManifest(name model.Name) (*Manifest, error) {
-	if !name.IsFullyQualified() {
-		return nil, model.Unqualified(name)
+func (m *Manifest) Remove() error {
+	if err := os.Remove(m.filepath); err != nil {
+		return err
+	}
+
+	for _, layer := range append(m.Layers, m.Config) {
+		if err := layer.Remove(); err != nil {
+			return err
+		}
+	}
+
+	manifests, err := GetManifestPath()
+	if err != nil {
+		return err
+	}
+
+	return PruneDirectory(manifests)
+}
+
+func ParseNamedManifest(n model.Name) (*Manifest, error) {
+	if !n.IsFullyQualified() {
+		return nil, model.Unqualified(n)
 	}
 
 	manifests, err := GetManifestPath()
@@ -35,20 +56,24 @@ func ParseNamedManifest(name model.Name) (*Manifest, error) {
 		return nil, err
 	}
 
-	var manifest ManifestV2
-	manifestfile, err := os.Open(filepath.Join(manifests, name.Filepath()))
+	p := filepath.Join(manifests, n.Filepath())
+
+	var m ManifestV2
+	f, err := os.Open(p)
 	if err != nil {
 		return nil, err
 	}
+	defer f.Close()
 
 	sha256sum := sha256.New()
-	if err := json.NewDecoder(io.TeeReader(manifestfile, sha256sum)).Decode(&manifest); err != nil {
+	if err := json.NewDecoder(io.TeeReader(f, sha256sum)).Decode(&m); err != nil {
 		return nil, err
 	}
 
 	return &Manifest{
-		ManifestV2: manifest,
-		Digest:     fmt.Sprintf("%x", sha256sum.Sum(nil)),
+		ManifestV2: m,
+		filepath:   p,
+		digest:     fmt.Sprintf("%x", sha256sum.Sum(nil)),
 	}, nil
 }
 
@@ -77,3 +102,36 @@ func WriteManifest(name string, config *Layer, layers []*Layer) error {
 
 	return os.WriteFile(manifestPath, b.Bytes(), 0o644)
 }
+
+func Manifests() (map[model.Name]*Manifest, error) {
+	manifests, err := GetManifestPath()
+	if err != nil {
+		return nil, err
+	}
+
+	// TODO(mxyng): use something less brittle
+	matches, err := filepath.Glob(fmt.Sprintf("%s/*/*/*/*", manifests))
+	if err != nil {
+		return nil, err
+	}
+
+	ms := make(map[model.Name]*Manifest)
+	for _, match := range matches {
+		rel, err := filepath.Rel(manifests, match)
+		if err != nil {
+			return nil, err
+		}
+
+		n := model.ParseNameFromFilepath(rel)
+		if n.IsValid() {
+			m, err := ParseNamedManifest(n)
+			if err != nil {
+				return nil, err
+			}
+
+			ms[n] = m
+		}
+	}
+
+	return ms, nil
+}