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package transactional
import (
"gopkg.in/src-d/go-git.v4/plumbing/format/index"
"gopkg.in/src-d/go-git.v4/plumbing/storer"
)
type IndexStorage struct {
storer.IndexStorer
temporal storer.IndexStorer
set bool
}
func NewIndexStorage(s, temporal storer.IndexStorer) *IndexStorage {
return &IndexStorage{
IndexStorer: s,
temporal: temporal,
}
}
func (s *IndexStorage) SetIndex(idx *index.Index) (err error) {
if err := s.temporal.SetIndex(idx); err != nil {
return err
}
s.set = true
return nil
}
func (s *IndexStorage) Index() (*index.Index, error) {
if !s.set {
return s.IndexStorer.Index()
}
return s.temporal.Index()
}
func (c *IndexStorage) Commit() error {
if !c.set {
return nil
}
idx, err := c.temporal.Index()
if err != nil {
return err
}
return c.IndexStorer.SetIndex(idx)
}
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