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[#1085] blobstor: allow to ignore errors during iteration

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Signed-off-by: Evgenii Stratonikov <evgeniy@nspcc.ru>
This commit is contained in:
Evgenii Stratonikov 2022-01-20 19:32:49 +03:00 • committed by LeL
parent c954f0e71b
commit cd75638ce3
3 changed files with 134 additions and 5 deletions
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19
pkg/local_object_storage/blobstor/iterate.go
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@ -32,7 +32,8 @@ type IterationHandler func(IterationElement) error
// IteratePrm groups the parameters of Iterate operation.
type IteratePrm struct {
handler IterationHandler
handler IterationHandler
ignoreErrors bool
}
// IterateRes groups resulting values of Iterate operation.
@ -43,6 +44,11 @@ func (i *IteratePrm) SetIterationHandler(h IterationHandler) {
i.handler = h
}
// IgnoreErrors sets the flag signifying whether errors should be ignored.
func (i *IteratePrm) IgnoreErrors() {
i.ignoreErrors = true
}
// Iterate traverses the storage over the stored objects and calls the handler
// on each element.
//
@ -53,13 +59,16 @@ func (i *IteratePrm) SetIterationHandler(h IterationHandler) {
func (b *BlobStor) Iterate(prm IteratePrm) (*IterateRes, error) {
var elem IterationElement
err := b.blobovniczas.iterateBlobovniczas(func(p string, blz *blobovnicza.Blobovnicza) error {
err := b.blobovniczas.iterateBlobovniczas(prm.ignoreErrors, func(p string, blz *blobovnicza.Blobovnicza) error {
err := blobovnicza.IterateObjects(blz, func(data []byte) error {
var err error
// decompress the data
elem.data, err = b.decompressor(data)
if err != nil {
if prm.ignoreErrors {
return nil
}
return fmt.Errorf("could not decompress object data: %w", err)
}
@ -83,11 +92,15 @@ func (b *BlobStor) Iterate(prm IteratePrm) (*IterateRes, error) {
// decompress the data
elem.data, err = b.decompressor(data)
if err != nil {
if prm.ignoreErrors {
return nil
}
return fmt.Errorf("could not decompress object data: %w", err)
}
return prm.handler(elem)
}))
}).WithIgnoreErrors(prm.ignoreErrors))
if err != nil {
return nil, fmt.Errorf("fs tree iterator failure: %w", err)
}