package meta import ( "bytes" "fmt" "strings" cid "github.com/nspcc-dev/neofs-sdk-go/container/id" "github.com/nspcc-dev/neofs-sdk-go/object" oid "github.com/nspcc-dev/neofs-sdk-go/object/id" "go.etcd.io/bbolt" ) /* We might increase performance by not using string representation of identities and addresses. String representation require base58 encoding that slows execution. Instead we can try to marshal these structures directly into bytes. Check it later. */ const invalidBase58String = "_" var ( // graveyardBucketName stores rows with the objects that have been // covered with Tombstone objects. That objects should not be returned // from the node and should not be accepted by the node from other // nodes. graveyardBucketName = []byte(invalidBase58String + "Graveyard") // garbageBucketName stores rows with the objects that should be physically // deleted by the node (Garbage Collector routine). garbageBucketName = []byte(invalidBase58String + "Garbage") toMoveItBucketName = []byte(invalidBase58String + "ToMoveIt") containerVolumeBucketName = []byte(invalidBase58String + "ContainerSize") zeroValue = []byte{0xFF} smallPostfix = invalidBase58String + "small" storageGroupPostfix = invalidBase58String + "SG" tombstonePostfix = invalidBase58String + "TS" ownerPostfix = invalidBase58String + "ownerid" payloadHashPostfix = invalidBase58String + "payloadhash" rootPostfix = invalidBase58String + "root" parentPostfix = invalidBase58String + "parent" splitPostfix = invalidBase58String + "splitid" userAttributePostfix = invalidBase58String + "attr_" splitInfoError *object.SplitInfoError // for errors.As comparisons ) // primaryBucketName returns . func primaryBucketName(cnr cid.ID) []byte { return []byte(cnr.EncodeToString()) } // tombstoneBucketName returns _TS. func tombstoneBucketName(cnr cid.ID) []byte { return []byte(cnr.EncodeToString() + tombstonePostfix) } // storageGroupBucketName returns _SG. func storageGroupBucketName(cnr cid.ID) []byte { return []byte(cnr.EncodeToString() + storageGroupPostfix) } // smallBucketName returns _small. func smallBucketName(cnr cid.ID) []byte { return []byte(cnr.EncodeToString() + smallPostfix) // consider caching output values } // attributeBucketName returns _attr_. func attributeBucketName(cnr cid.ID, attributeKey string) []byte { sb := strings.Builder{} // consider getting string builders from sync.Pool sb.WriteString(cnr.EncodeToString()) sb.WriteString(userAttributePostfix) sb.WriteString(attributeKey) return []byte(sb.String()) } // returns from attributeBucketName result, nil otherwise. func cidFromAttributeBucket(val []byte, attributeKey string) []byte { suffix := []byte(userAttributePostfix + attributeKey) if !bytes.HasSuffix(val, suffix) { return nil } return val[:len(val)-len(suffix)] } // payloadHashBucketName returns _payloadhash. func payloadHashBucketName(cnr cid.ID) []byte { return []byte(cnr.EncodeToString() + payloadHashPostfix) } // rootBucketName returns _root. func rootBucketName(cnr cid.ID) []byte { return []byte(cnr.EncodeToString() + rootPostfix) } // ownerBucketName returns _ownerid. func ownerBucketName(cnr cid.ID) []byte { return []byte(cnr.EncodeToString() + ownerPostfix) } // parentBucketName returns _parent. func parentBucketName(cnr cid.ID) []byte { return []byte(cnr.EncodeToString() + parentPostfix) } // splitBucketName returns _splitid. func splitBucketName(cnr cid.ID) []byte { return []byte(cnr.EncodeToString() + splitPostfix) } // addressKey returns key for K-V tables when key is a whole address. func addressKey(addr oid.Address) []byte { return []byte(addr.EncodeToString()) } // parses object address formed by addressKey. func decodeAddressFromKey(dst *oid.Address, k []byte) error { err := dst.DecodeString(string(k)) if err != nil { return fmt.Errorf("decode object address from db key: %w", err) } return nil } // objectKey returns key for K-V tables when key is an object id. func objectKey(obj oid.ID) []byte { return []byte(obj.EncodeToString()) } // removes all bucket elements. func resetBucket(b *bbolt.Bucket) error { return b.ForEach(func(k, v []byte) error { if v != nil { return b.Delete(k) } return b.DeleteBucket(k) }) } // if meets irregular object container in objs - returns its type, otherwise returns object.TypeRegular. // // firstIrregularObjectType(tx, cnr, obj) usage allows getting object type. func firstIrregularObjectType(tx *bbolt.Tx, idCnr cid.ID, objs ...[]byte) object.Type { if len(objs) == 0 { panic("empty object list in firstIrregularObjectType") } irregularTypeBuckets := [...]struct { typ object.Type name []byte }{ {object.TypeTombstone, tombstoneBucketName(idCnr)}, {object.TypeStorageGroup, storageGroupBucketName(idCnr)}, {object.TypeLock, bucketNameLockers(idCnr)}, } for i := range objs { for j := range irregularTypeBuckets { if inBucket(tx, irregularTypeBuckets[j].name, objs[i]) { return irregularTypeBuckets[j].typ } } } return object.TypeRegular }