working commit

app/maindb/blob.go

@@ -37,6 +37,23 @@ func (db *Database) GetBlobByDigest(ctx context.Context, digest string) (bool, d
 	return exists, res, err
 }
 
+func (db *Database) GetBlobByNameDigest(ctx context.Context, name, digest string) (bool, descr.Blob, error) {
+	var err error
+	blobs := make([]descr.Blob, 0)
+	res := descr.Blob{}
+	exists := false
+	request := `SELECT * FROM blobs WHERE name = $1 AND digest = $1 LIMIT 1`
+	err = db.db.Select(&blobs, request, name, digest)
+	if err != nil {
+		return exists, res, err
+	}
+	if len(blobs) > 0 {
+		res = blobs[0]
+		exists = true
+	}
+	return exists, res, err
+}
+
 func (db *Database) ListAllBlobs(ctx context.Context) ([]descr.Blob, error) {
 	var err error
 	blobs := make([]descr.Blob, 0)
@@ -79,8 +96,7 @@ func (db *Database) GetBlobUsage(ctx context.Context, digest string) (int64, err
 	var err error
 	var usage int64
 	count := make([]int64, 0)
-	request := `
-                SELECT count(id) AS count FROM blobs WHERE digest = $1`
+	request := `SELECT count(id) AS count FROM blobs WHERE digest = $1`
 	err = db.db.Select(&count, request, digest)
 	if err != nil {
 		return usage, err
@@ -89,7 +105,7 @@ func (db *Database) GetBlobUsage(ctx context.Context, digest string) (int64, err
 	return usage, err
 }
 
-func (db *Database) DeleteBlobByDigest(ctx context.Context, digest string) error {
+func (db *Database) xxxxDeleteBlobByDigest(ctx context.Context, digest string) error {
 	var err error
 	request := `DELETE FROM blobs WHERE digest = $1;`
 	_, err = db.db.Exec(request, digest)
@@ -98,3 +114,13 @@ func (db *Database) DeleteBlobByDigest(ctx context.Context, digest string) error
 	}
 	return err
 }
+
+func (db *Database) DeleteBlobByNameDigest(ctx context.Context, name, digest string) error {
+	var err error
+	request := `DELETE FROM blobs WHERE name = $1 AND digest = $2;`
+	_, err = db.db.Exec(request, name, digest)
+	if err != nil {
+		return err
+	}
+	return err
+}