Abstract out more of the backup functionality

server/backup/backup_s3.go

@@ -0,0 +1,37 @@
+package backup
+
+type S3Backup struct {
+	// The UUID of this backup object. This must line up with a backup from
+	// the panel instance.
+	Uuid string
+
+	// An array of files to ignore when generating this backup. This should be
+	// compatible with a standard .gitignore structure.
+	IgnoredFiles []string
+}
+
+var _ Backup = (*S3Backup)(nil)
+
+func (s *S3Backup) Identifier() string {
+	return s.Uuid
+}
+
+func (s *S3Backup) Backup(dir string) error {
+	panic("implement me")
+}
+
+func (s *S3Backup) Checksum() ([]byte, error) {
+	return []byte(""), nil
+}
+
+func (s *S3Backup) Size() (int64, error) {
+	return 0, nil
+}
+
+func (s *S3Backup) Path() string {
+	return ""
+}
+
+func (s *S3Backup) Details() *ArchiveDetails {
+	return &ArchiveDetails{}
+}