// UpdateCredential implements CredentialUpdater.
func (s *store) UpdateCredential(cloudName string, details cloud.CloudCredential) error {
releaser, err := s.acquireLock()
if err != nil {
return errors.Annotatef(err, "cannot update credentials for %v", cloudName)
}
defer releaser.Release()
all, err := ReadCredentialsFile(JujuCredentialsPath())
if err != nil {
return errors.Annotate(err, "cannot get credentials")
}
if len(all) == 0 {
all = make(map[string]cloud.CloudCredential)
}
// Clear the default credential if we are removing that one.
if existing, ok := all[cloudName]; ok && existing.DefaultCredential != "" {
stillHaveDefault := false
for name := range details.AuthCredentials {
if name == existing.DefaultCredential {
stillHaveDefault = true
break
}
}
if !stillHaveDefault {
details.DefaultCredential = ""
}
}
all[cloudName] = details
return WriteCredentialsFile(all)
}
