frostfs-node/pkg/local_object_storage/blobstor/iterate.go

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package blobstor
import (
"fmt"
"github.com/nspcc-dev/neofs-node/pkg/local_object_storage/blobstor/common"
oid "github.com/nspcc-dev/neofs-sdk-go/object/id"
"go.uber.org/zap"
)
// Iterate traverses the storage over the stored objects and calls the handler
// on each element.
//
// Returns any error encountered that
// did not allow to completely iterate over the storage.
//
// If handler returns an error, method wraps and returns it immediately.
func (b *BlobStor) Iterate(prm common.IteratePrm) (common.IterateRes, error) {
_, err := b.blobovniczas.Iterate(prm)
if err != nil && !prm.IgnoreErrors {
return common.IterateRes{}, fmt.Errorf("blobovnizas iterator failure: %w", err)
}
// FIXME decompress in the fstree
iPrm := prm
iPrm.Handler = func(element common.IterationElement) error {
data, err := b.Decompress(element.ObjectData)
if err != nil {
if prm.IgnoreErrors {
if prm.ErrorHandler != nil {
return prm.ErrorHandler(element.Address, err)
}
return nil
}
return fmt.Errorf("could not decompress object data: %w", err)
}
element.ObjectData = data
return prm.Handler(element)
}
_, err = b.fsTree.Iterate(iPrm)
if err != nil && !prm.IgnoreErrors {
return common.IterateRes{}, fmt.Errorf("fs tree iterator failure: %w", err)
}
return common.IterateRes{}, nil
}
// IterateBinaryObjects is a helper function which iterates over BlobStor and passes binary objects to f.
// Errors related to object reading and unmarshaling are logged and skipped.
func IterateBinaryObjects(blz *BlobStor, f func(addr oid.Address, data []byte, descriptor []byte) error) error {
var prm common.IteratePrm
prm.Handler = func(elem common.IterationElement) error {
return f(elem.Address, elem.ObjectData, elem.StorageID)
}
prm.IgnoreErrors = true
prm.ErrorHandler = func(addr oid.Address, err error) error {
blz.log.Warn("error occurred during the iteration",
zap.Stringer("address", addr),
zap.String("err", err.Error()))
return nil
}
_, err := blz.Iterate(prm)
return err
}