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import.go
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import.go
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package genesis
import (
"bytes"
"encoding/hex"
"encoding/json"
"fmt"
"strings"
"github.com/ElrondNetwork/elrond-go-core/core"
"github.com/ElrondNetwork/elrond-go-core/core/check"
"github.com/ElrondNetwork/elrond-go-core/data"
"github.com/ElrondNetwork/elrond-go-core/data/block"
"github.com/ElrondNetwork/elrond-go-core/hashing"
"github.com/ElrondNetwork/elrond-go-core/marshal"
"github.com/ElrondNetwork/elrond-go/common"
"github.com/ElrondNetwork/elrond-go/config"
"github.com/ElrondNetwork/elrond-go/state"
"github.com/ElrondNetwork/elrond-go/state/factory"
"github.com/ElrondNetwork/elrond-go/state/storagePruningManager/disabled"
"github.com/ElrondNetwork/elrond-go/trie"
triesFactory "github.com/ElrondNetwork/elrond-go/trie/factory"
"github.com/ElrondNetwork/elrond-go/update"
)
var _ update.ImportHandler = (*stateImport)(nil)
const maxTrieLevelInMemory = uint(5)
// ArgsNewStateImport is the arguments structure to create a new state importer
type ArgsNewStateImport struct {
Hasher hashing.Hasher
Marshalizer marshal.Marshalizer
ShardID uint32
StorageConfig config.StorageConfig
TrieStorageManagers map[string]common.StorageManager
HardforkStorer update.HardforkStorer
}
type stateImport struct {
genesisHeaders map[uint32]data.HeaderHandler
transactions map[string]data.TransactionHandler
miniBlocks map[string]*block.MiniBlock
importedEpochStartMetaBlock data.MetaHeaderHandler
importedUnFinishedMetaBlocks map[string]data.MetaHeaderHandler
tries map[string]common.Trie
accountDBsMap map[uint32]state.AccountsDBImporter
validatorDB state.AccountsDBImporter
hardforkStorer update.HardforkStorer
hasher hashing.Hasher
marshalizer marshal.Marshalizer
shardID uint32
storageConfig config.StorageConfig
trieStorageManagers map[string]common.StorageManager
}
// NewStateImport creates an importer which reads all the files for a new start
func NewStateImport(args ArgsNewStateImport) (*stateImport, error) {
if check.IfNil(args.Hasher) {
return nil, update.ErrNilHasher
}
if check.IfNil(args.Marshalizer) {
return nil, update.ErrNilMarshalizer
}
if len(args.TrieStorageManagers) == 0 {
return nil, update.ErrNilTrieStorageManagers
}
if check.IfNil(args.HardforkStorer) {
return nil, update.ErrNilHardforkStorer
}
st := &stateImport{
genesisHeaders: make(map[uint32]data.HeaderHandler),
transactions: make(map[string]data.TransactionHandler),
miniBlocks: make(map[string]*block.MiniBlock),
importedEpochStartMetaBlock: &block.MetaBlock{},
importedUnFinishedMetaBlocks: make(map[string]data.MetaHeaderHandler),
tries: make(map[string]common.Trie),
hasher: args.Hasher,
marshalizer: args.Marshalizer,
accountDBsMap: make(map[uint32]state.AccountsDBImporter),
trieStorageManagers: args.TrieStorageManagers,
storageConfig: args.StorageConfig,
shardID: args.ShardID,
hardforkStorer: args.HardforkStorer,
}
return st, nil
}
// ImportAll imports all the relevant files for the new genesis
func (si *stateImport) ImportAll() error {
var errFound error
si.hardforkStorer.RangeKeys(func(identifier string, keys [][]byte) bool {
var err error
switch identifier {
case EpochStartMetaBlockIdentifier:
err = si.importEpochStartMetaBlock(identifier, keys)
case UnFinishedMetaBlocksIdentifier:
err = si.importUnFinishedMetaBlocks(identifier, keys)
case MiniBlocksIdentifier:
err = si.importMiniBlocks(identifier, keys)
case TransactionsIdentifier:
err = si.importTransactions(identifier, keys)
default:
splitString := strings.Split(identifier, atSep)
canImportState := len(splitString) > 1 && splitString[0] == TrieIdentifier
if !canImportState {
return true
}
err = si.importState(identifier, keys)
}
if err != nil {
errFound = err
return false
}
return true
})
err := si.hardforkStorer.Close()
if errFound != nil {
return errFound
}
return err
}
func (si *stateImport) importEpochStartMetaBlock(identifier string, keys [][]byte) error {
if len(keys) != 1 {
return update.ErrExpectedOneStartOfEpochMetaBlock
}
object, err := si.createElement(identifier, string(keys[0]))
if err != nil {
return err
}
metaBlock, ok := object.(*block.MetaBlock)
if !ok {
return update.ErrWrongTypeAssertion
}
si.importedEpochStartMetaBlock = metaBlock
return nil
}
func (si *stateImport) importUnFinishedMetaBlocks(identifier string, keys [][]byte) error {
var err error
var object interface{}
for _, key := range keys {
object, err = si.createElement(identifier, string(key))
if err != nil {
break
}
metaBlock, ok := object.(*block.MetaBlock)
if !ok {
return update.ErrWrongTypeAssertion
}
var hash []byte
hash, err = core.CalculateHash(si.marshalizer, si.hasher, metaBlock)
if err != nil {
break
}
si.importedUnFinishedMetaBlocks[string(hash)] = metaBlock
}
if err != nil {
return fmt.Errorf("%w identifier %s", err, UnFinishedMetaBlocksIdentifier)
}
return nil
}
func (si *stateImport) importTransactions(identifier string, keys [][]byte) error {
var err error
var object interface{}
for _, key := range keys {
object, err = si.createElement(identifier, string(key))
if err != nil {
break
}
tx, ok := object.(data.TransactionHandler)
if !ok {
err = fmt.Errorf("%w: wanted a transaction handler", update.ErrWrongTypeAssertion)
break
}
var hash []byte
hash, err = core.CalculateHash(si.marshalizer, si.hasher, tx)
if err != nil {
break
}
si.transactions[string(hash)] = tx
}
if err != nil {
return fmt.Errorf("%w identifier %s", err, TransactionsIdentifier)
}
return nil
}
func (si *stateImport) createElement(identifier string, key string) (interface{}, error) {
objType, _, err := GetKeyTypeAndHash(key)
if err != nil {
return nil, err
}
object, err := NewObject(objType)
if err != nil {
return nil, err
}
value, err := si.hardforkStorer.Get(identifier, []byte(key))
if err != nil {
return nil, fmt.Errorf("%w, key not found for %s, error: %s",
update.ErrImportingData, hex.EncodeToString([]byte(key)), err.Error())
}
err = json.Unmarshal(value, object)
if err != nil {
return nil, err
}
return object, nil
}
func (si *stateImport) importMiniBlocks(identifier string, keys [][]byte) error {
var err error
var object interface{}
for _, key := range keys {
object, err = si.createElement(identifier, string(key))
if err != nil {
break
}
miniBlock, ok := object.(*block.MiniBlock)
if !ok {
err = fmt.Errorf("%w: wanted a miniblock", update.ErrWrongTypeAssertion)
break
}
var hash []byte
hash, err = core.CalculateHash(si.marshalizer, si.hasher, miniBlock)
if err != nil {
break
}
si.miniBlocks[string(hash)] = miniBlock
}
if err != nil {
return fmt.Errorf("%w identifier %s", err, MiniBlocksIdentifier)
}
return nil
}
func newAccountCreator(accType Type) (state.AccountFactory, error) {
switch accType {
case UserAccount:
return factory.NewAccountCreator(), nil
case ValidatorAccount:
return factory.NewPeerAccountCreator(), nil
}
return nil, update.ErrUnknownType
}
func (si *stateImport) getTrie(shardID uint32, accType Type) (common.Trie, error) {
trieString := core.ShardIdToString(shardID)
if accType == ValidatorAccount {
trieString = "validator"
}
trieForShard, ok := si.tries[trieString]
if ok {
return trieForShard, nil
}
trieStorageManager := si.trieStorageManagers[triesFactory.UserAccountTrie]
if accType == ValidatorAccount {
trieStorageManager = si.trieStorageManagers[triesFactory.PeerAccountTrie]
}
trieForShard, err := trie.NewTrie(trieStorageManager, si.marshalizer, si.hasher, maxTrieLevelInMemory)
if err != nil {
return nil, err
}
si.tries[trieString] = trieForShard
return trieForShard, nil
}
func (si *stateImport) importDataTrie(identifier string, shID uint32, keys [][]byte) error {
var originalRootHash, address, value []byte
var err error
if len(keys) == 0 {
return fmt.Errorf("%w missing original root hash", update.ErrImportingData)
}
originalRootHash, err = si.hardforkStorer.Get(identifier, keys[0])
if err != nil {
return err
}
keyType, _, err := GetKeyTypeAndHash(string(keys[0]))
if err != nil {
return err
}
if keyType != RootHash {
return fmt.Errorf("%w wanted a roothash", update.ErrWrongTypeAssertion)
}
dataTrie, err := trie.NewTrie(si.trieStorageManagers[triesFactory.UserAccountTrie], si.marshalizer, si.hasher, maxTrieLevelInMemory)
if err != nil {
return err
}
if len(originalRootHash) == 0 || bytes.Equal(originalRootHash, trie.EmptyTrieHash) {
err = dataTrie.Commit()
if err != nil {
return err
}
si.tries[identifier] = dataTrie
return nil
}
for i := 1; i < len(keys); i++ {
key := keys[i]
value, err = si.hardforkStorer.Get(identifier, key)
if err != nil {
break
}
keyType, address, err = GetKeyTypeAndHash(string(key))
if err != nil {
break
}
if keyType != DataTrie {
err = update.ErrKeyTypeMismatch
break
}
err = dataTrie.Update(address, value)
if err != nil {
break
}
}
if err != nil {
return fmt.Errorf("%w identifier: %s", err, identifier)
}
err = dataTrie.Commit()
if err != nil {
return err
}
si.tries[identifier] = dataTrie
rootHash, err := dataTrie.RootHash()
if err != nil {
return err
}
if !bytes.Equal(rootHash, originalRootHash) {
log.Warn("imported state rootHash does not match original ", "new", rootHash, "old", originalRootHash, "shardID", shID, "accType", DataTrie)
}
return nil
}
func (si *stateImport) getAccountsDB(accType Type, shardID uint32) (state.AccountsDBImporter, common.Trie, error) {
accountFactory, err := newAccountCreator(accType)
if err != nil {
return nil, nil, err
}
currentTrie, err := si.getTrie(shardID, accType)
if err != nil {
return nil, nil, err
}
if accType == ValidatorAccount {
if check.IfNil(si.validatorDB) {
accountsDB, errCreate := state.NewAccountsDB(
currentTrie,
si.hasher,
si.marshalizer,
accountFactory,
disabled.NewDisabledStoragePruningManager(),
common.Normal,
)
if errCreate != nil {
return nil, nil, errCreate
}
si.validatorDB = accountsDB
}
return si.validatorDB, currentTrie, err
}
accountsDB, ok := si.accountDBsMap[shardID]
if ok {
return accountsDB, currentTrie, nil
}
accountsDB, err = state.NewAccountsDB(
currentTrie,
si.hasher,
si.marshalizer,
accountFactory,
disabled.NewDisabledStoragePruningManager(),
common.Normal,
)
si.accountDBsMap[shardID] = accountsDB
return accountsDB, currentTrie, err
}
func (si *stateImport) importState(identifier string, keys [][]byte) error {
accType, shId, err := GetTrieTypeAndShId(identifier)
if err != nil {
return err
}
// no need to import validator account trie
if accType == ValidatorAccount {
return nil
}
if accType == DataTrie {
return si.importDataTrie(identifier, shId, keys)
}
accountsDB, mainTrie, err := si.getAccountsDB(accType, shId)
if err != nil {
return err
}
if len(keys) == 0 {
return fmt.Errorf("%w missing root hash", update.ErrImportingData)
}
// read root hash - that is the first saved in the file
rootHash, err := si.hardforkStorer.Get(identifier, keys[0])
if err != nil {
return err
}
keyType, _, err := GetKeyTypeAndHash(string(keys[0]))
if err != nil {
return err
}
if keyType != RootHash {
return fmt.Errorf("%w wanted a roothash, got %v", update.ErrWrongTypeAssertion, keyType)
}
log.Debug("importing state", "shard ID", shId, "root hash", rootHash)
if len(rootHash) == 0 || bytes.Equal(rootHash, trie.EmptyTrieHash) {
return si.saveRootHash(accountsDB, accType, shId, rootHash)
}
var marshaledData []byte
var address []byte
for i := 1; i < len(keys); i++ {
key := keys[i]
marshaledData, err = si.hardforkStorer.Get(identifier, key)
if err != nil {
break
}
keyType, address, err = GetKeyTypeAndHash(string(key))
if err != nil {
break
}
if keyType != accType {
err = update.ErrKeyTypeMismatch
break
}
err = si.unMarshalAndSaveAccount(accType, address, marshaledData, accountsDB, mainTrie)
if err != nil {
break
}
}
if err != nil {
return fmt.Errorf("%w identifier: %s", err, identifier)
}
return si.saveRootHash(accountsDB, accType, shId, rootHash)
}
func (si *stateImport) unMarshalAndSaveAccount(
accType Type,
address, buffer []byte,
accountsDB state.AccountsDBImporter,
mainTrie common.Trie,
) error {
account, err := NewEmptyAccount(accType, address)
if err != nil {
return err
}
err = si.marshalizer.Unmarshal(account, buffer)
if err != nil {
log.Trace("error unmarshaling account this is maybe a code error",
"key", hex.EncodeToString(address),
"error", err,
)
err = mainTrie.Update(address, buffer)
return err
}
return accountsDB.ImportAccount(account)
}
func (si *stateImport) saveRootHash(
accountsDB state.AccountsDBImporter,
accType Type,
shardID uint32,
originalRootHash []byte,
) error {
rootHash, err := accountsDB.Commit()
if err != nil {
return err
}
if !bytes.Equal(rootHash, originalRootHash) {
log.Warn("imported state rootHash does not match original ", "new", rootHash, "old", originalRootHash, "accType", accType, "shardID", shardID)
}
log.Debug("committed trie", "shard ID", shardID, "root hash", rootHash)
return nil
}
// GetAccountsDBForShard returns the accounts DB for a specific shard
func (si *stateImport) GetAccountsDBForShard(shardID uint32) state.AccountsAdapter {
adb, ok := si.accountDBsMap[shardID]
if !ok {
return nil
}
accountsAdapter, ok := adb.(state.AccountsAdapter)
if !ok {
return nil
}
return accountsAdapter
}
// GetTransactions returns all pending imported transactions
func (si *stateImport) GetTransactions() map[string]data.TransactionHandler {
return si.transactions
}
// GetHardForkMetaBlock returns the hardFork metablock
func (si *stateImport) GetHardForkMetaBlock() data.MetaHeaderHandler {
return si.importedEpochStartMetaBlock
}
// GetUnFinishedMetaBlocks returns all imported unFinished metablocks
func (si *stateImport) GetUnFinishedMetaBlocks() map[string]data.MetaHeaderHandler {
return si.importedUnFinishedMetaBlocks
}
// GetMiniBlocks returns all imported pending miniblocks
func (si *stateImport) GetMiniBlocks() map[string]*block.MiniBlock {
return si.miniBlocks
}
// GetValidatorAccountsDB returns the imported validator accounts DB
func (si *stateImport) GetValidatorAccountsDB() state.AccountsAdapter {
accountsAdapter, ok := si.validatorDB.(state.AccountsAdapter)
if !ok {
return nil
}
return accountsAdapter
}
// Close tries to close state import objects
func (si *stateImport) Close() error {
return si.hardforkStorer.Close()
}
// IsInterfaceNil returns true if underlying object is nil
func (si *stateImport) IsInterfaceNil() bool {
return si == nil
}