func (s Filestore) loadConfig(h *host.Host) error {
data, err := ioutil.ReadFile(filepath.Join(s.GetMachinesDir(), h.Name, "config.json"))
if err != nil {
return err
}
// Remember the machine name so we don't have to pass it through each
// struct in the migration.
name := h.Name
migratedHost, migrationPerformed, err := host.MigrateHost(h, data)
if err != nil {
return fmt.Errorf("Error getting migrated host: %s", err)
}
*h = *migratedHost
h.Name = name
// If we end up performing a migration, we should save afterwards so we don't have to do it again on subsequent invocations.
if migrationPerformed {
if err := s.saveToFile(data, filepath.Join(s.GetMachinesDir(), h.Name, "config.json.bak")); err != nil {
return fmt.Errorf("Error attempting to save backup after migration: %s", err)
}
if err := s.Save(h); err != nil {
return fmt.Errorf("Error saving config after migration was performed: %s", err)
}
}
return nil
}
