splitted app/imageoper/manififest.go

app/imageoper/delman.go

@@ -0,0 +1,123 @@
+/*
+ * Copyright 2026 Oleg Borodin <onborodin@gmail.com>
+ *
+ * This work is published and licensed under a Creative Commons
+ * Attribution-NonCommercial-NoDerivatives 4.0 International License.
+ *
+ * Distribution of this work is permitted, but commercial use and
+ * modifications are strictly prohibited.
+ */
+package imageoper
+
+import (
+	"context"
+	"fmt"
+	"net/http"
+
+	"mstore/pkg/descr"
+)
+
+type DeleteManifestParams struct {
+	Name      string
+	Reference string
+}
+type DeleteManifestResult struct{}
+
+func (oper *Operator) DeleteManifest(ctx context.Context, params *DeleteManifestParams) (*DeleteManifestResult, int, error) {
+	var err error
+	res := &DeleteManifestResult{}
+
+	if params.Name == "" {
+		err = fmt.Errorf("Empty name")
+		return res, http.StatusBadRequest, err
+	}
+	if params.Reference == "" {
+		err = fmt.Errorf("Empty reference")
+		return res, http.StatusBadRequest, err
+	}
+
+	resName := params.Name
+	oper.iLock.WaitAndLock(resName)
+	defer oper.iLock.Done(resName)
+
+	var exists bool
+	var reference string
+
+	manifestDescr := descr.Manifest{}
+
+	// Check manifest by digest as name
+	if stringLikeSHADigest(params.Reference) {
+		digest := normalizeSHADigest(params.Reference)
+		exists, manifestDescr, err = oper.mdb.GetManifestByDigest(ctx, params.Name, digest)
+		if err != nil {
+			return res, http.StatusInternalServerError, err
+		}
+		if !exists {
+			return res, http.StatusNotFound, err
+		}
+		reference = manifestDescr.Reference
+		err = oper.deleteManifestObjects(ctx, params.Name, reference)
+		if err != nil {
+			return res, http.StatusInternalServerError, err
+		}
+	} else {
+		// Check manifest by name and reference
+		exists, manifestDescrs, err := oper.mdb.GetManifestsByReference(ctx, params.Name, params.Reference)
+		if err != nil {
+			return res, http.StatusInternalServerError, err
+		}
+		if !exists {
+			return res, http.StatusNotFound, err
+		}
+		reference = params.Reference
+		for _, manifestDescr := range manifestDescrs {
+			reference = manifestDescr.Reference
+			err = oper.deleteManifestObjects(ctx, params.Name, reference)
+			if err != nil {
+				return res, http.StatusInternalServerError, err
+			}
+		}
+	}
+	// Get blobs associated with the name
+	return res, http.StatusAccepted, err
+}
+
+func (oper *Operator) deleteManifestObjects(ctx context.Context, name, reference string) error {
+	var err error
+	// Get blobs associated with the name
+	layers, err := oper.mdb.GetBlobsByReferense(ctx, name, reference)
+	if err != nil {
+		return err
+	}
+	for _, blob := range layers {
+		// Delete descr record
+		err = oper.mdb.DeleteBlobByNameDigest(ctx, blob.Name, blob.Digest)
+		if err != nil {
+			return err
+		}
+		// Check blob file
+		exists, _, err := oper.store.BlobExists(blob.Digest)
+		if err != nil {
+			return err
+		}
+		if exists {
+			// Check blob usage
+			blobUsage, err := oper.mdb.GetBlobUsage(ctx, blob.Digest)
+			if err != nil {
+				return err
+			}
+			// Delete if blob useless
+			if blobUsage == 0 {
+				err = oper.store.DeleteBlob(blob.Digest)
+				if err != nil {
+					return err
+				}
+			}
+		}
+	}
+	err = oper.mdb.DeleteManifest(ctx, name, reference)
+	if err != nil {
+		return err
+	}
+	return err
+}