frostfs-node/pkg/local_object_storage/engine/exists.go

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package engine
import (
"context"
"errors"
"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/shard"
"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client"
apistatus "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client/status"
objectSDK "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
"go.uber.org/zap"
)
// exists return in the first value true if object exists.
// Second return value marks is parent object locked.
func (e *StorageEngine) exists(ctx context.Context, shPrm shard.ExistsPrm) (bool, bool, error) {
alreadyRemoved := false
exists := false
locked := false
e.iterateOverSortedShards(shPrm.Address, func(_ int, sh hashedShard) (stop bool) {
res, err := sh.Exists(ctx, shPrm)
if err != nil {
if client.IsErrObjectAlreadyRemoved(err) {
alreadyRemoved = true
return true
}
var siErr *objectSDK.SplitInfoError
if errors.As(err, &siErr) {
return true
}
if shard.IsErrObjectExpired(err) {
return true
}
if !client.IsErrObjectNotFound(err) {
e.reportShardError(sh, "could not check existence of object in shard", err, zap.Stringer("address", shPrm.Address))
}
return false
}
if !exists {
exists = res.Exists()
}
if !locked {
locked = res.Locked()
}
return false
})
if alreadyRemoved {
return false, false, new(apistatus.ObjectAlreadyRemoved)
}
return exists, locked, nil
}