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entry_diff_iterator.go
62 lines (53 loc) · 1.01 KB
/
entry_diff_iterator.go
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package catalog
import "github.com/treeverse/lakefs/pkg/graveler"
type entryDiffIterator struct {
it graveler.DiffIterator
value *EntryDiff
err error
}
func NewEntryDiffIterator(it graveler.DiffIterator) EntryDiffIterator {
return &entryDiffIterator{
it: it,
}
}
func (e *entryDiffIterator) Next() bool {
if e.err != nil {
return false
}
if !e.it.Next() {
e.value = nil
e.err = e.it.Err()
return false
}
v := e.it.Value()
// convert diff value if found to entry
var entry *Entry
if v.Value != nil {
entry, e.err = ValueToEntry(v.Value)
if e.err != nil {
e.value = nil
return false
}
}
// return entry diff
e.value = &EntryDiff{
Type: v.Type,
Path: Path(v.Key),
Entry: entry,
}
return true
}
func (e *entryDiffIterator) SeekGE(id Path) {
e.value = nil
key := graveler.Key(id)
e.it.SeekGE(key)
}
func (e *entryDiffIterator) Value() *EntryDiff {
return e.value
}
func (e *entryDiffIterator) Err() error {
return e.err
}
func (e *entryDiffIterator) Close() {
e.it.Close()
}