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metaProcess.go
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metaProcess.go
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package transaction
import (
"github.com/ElrondNetwork/elrond-go/core"
"github.com/ElrondNetwork/elrond-go/core/atomic"
"github.com/ElrondNetwork/elrond-go/core/check"
"github.com/ElrondNetwork/elrond-go/core/vmcommon"
"github.com/ElrondNetwork/elrond-go/data/state"
"github.com/ElrondNetwork/elrond-go/data/transaction"
"github.com/ElrondNetwork/elrond-go/hashing"
"github.com/ElrondNetwork/elrond-go/marshal"
"github.com/ElrondNetwork/elrond-go/process"
"github.com/ElrondNetwork/elrond-go/sharding"
)
var _ process.TransactionProcessor = (*metaTxProcessor)(nil)
// txProcessor implements TransactionProcessor interface and can modify account states according to a transaction
type metaTxProcessor struct {
*baseTxProcessor
txTypeHandler process.TxTypeHandler
flagESDTEnabled atomic.Flag
esdtEnableEpoch uint32
}
// ArgsNewMetaTxProcessor defines the arguments needed for new meta tx processor
type ArgsNewMetaTxProcessor struct {
Hasher hashing.Hasher
Marshalizer marshal.Marshalizer
Accounts state.AccountsAdapter
PubkeyConv core.PubkeyConverter
ShardCoordinator sharding.Coordinator
ScProcessor process.SmartContractProcessor
TxTypeHandler process.TxTypeHandler
EconomicsFee process.FeeHandler
ESDTEnableEpoch uint32
EpochNotifier process.EpochNotifier
}
// NewMetaTxProcessor creates a new txProcessor engine
func NewMetaTxProcessor(args ArgsNewMetaTxProcessor) (*metaTxProcessor, error) {
if check.IfNil(args.Accounts) {
return nil, process.ErrNilAccountsAdapter
}
if check.IfNil(args.PubkeyConv) {
return nil, process.ErrNilPubkeyConverter
}
if check.IfNil(args.ShardCoordinator) {
return nil, process.ErrNilShardCoordinator
}
if check.IfNil(args.ScProcessor) {
return nil, process.ErrNilSmartContractProcessor
}
if check.IfNil(args.TxTypeHandler) {
return nil, process.ErrNilTxTypeHandler
}
if check.IfNil(args.EconomicsFee) {
return nil, process.ErrNilEconomicsFeeHandler
}
if check.IfNil(args.EpochNotifier) {
return nil, process.ErrNilEpochNotifier
}
baseTxProcess := &baseTxProcessor{
accounts: args.Accounts,
shardCoordinator: args.ShardCoordinator,
pubkeyConv: args.PubkeyConv,
economicsFee: args.EconomicsFee,
hasher: args.Hasher,
marshalizer: args.Marshalizer,
scProcessor: args.ScProcessor,
flagPenalizedTooMuchGas: atomic.Flag{},
}
//backwards compatibility
baseTxProcess.flagPenalizedTooMuchGas.Unset()
txProc := &metaTxProcessor{
baseTxProcessor: baseTxProcess,
txTypeHandler: args.TxTypeHandler,
esdtEnableEpoch: args.ESDTEnableEpoch,
}
args.EpochNotifier.RegisterNotifyHandler(txProc)
return txProc, nil
}
// ProcessTransaction modifies the account states in respect with the transaction data
func (txProc *metaTxProcessor) ProcessTransaction(tx *transaction.Transaction) (vmcommon.ReturnCode, error) {
if check.IfNil(tx) {
return 0, process.ErrNilTransaction
}
acntSnd, acntDst, err := txProc.getAccounts(tx.SndAddr, tx.RcvAddr)
if err != nil {
return 0, err
}
txHash, err := core.CalculateHash(txProc.marshalizer, txProc.hasher, tx)
if err != nil {
return 0, err
}
process.DisplayProcessTxDetails(
"ProcessTransaction: sender account details",
acntSnd,
tx,
txProc.pubkeyConv,
)
err = txProc.checkTxValues(tx, acntSnd, acntDst, false)
if err != nil {
return 0, err
}
txType, _ := txProc.txTypeHandler.ComputeTransactionType(tx)
switch txType {
case process.SCDeployment:
return txProc.processSCDeployment(tx, tx.SndAddr)
case process.SCInvoking:
return txProc.processSCInvoking(tx, tx.SndAddr, tx.RcvAddr)
case process.BuiltInFunctionCall:
if txProc.flagESDTEnabled.IsSet() {
return txProc.processSCInvoking(tx, tx.SndAddr, tx.RcvAddr)
}
}
snapshot := txProc.accounts.JournalLen()
err = txProc.scProcessor.ProcessIfError(acntSnd, txHash, tx, process.ErrWrongTransaction.Error(), nil, snapshot, 0)
if err != nil {
return 0, err
}
return vmcommon.UserError, nil
}
func (txProc *metaTxProcessor) processSCDeployment(
tx *transaction.Transaction,
adrSrc []byte,
) (vmcommon.ReturnCode, error) {
// getAccounts returns acntSrc not nil if the adrSrc is in the node shard, the same, acntDst will be not nil
// if adrDst is in the node shard. If an error occurs it will be signaled in err variable.
acntSrc, err := txProc.getAccountFromAddress(adrSrc)
if err != nil {
return 0, err
}
return txProc.scProcessor.DeploySmartContract(tx, acntSrc)
}
func (txProc *metaTxProcessor) processSCInvoking(
tx *transaction.Transaction,
adrSrc, adrDst []byte,
) (vmcommon.ReturnCode, error) {
// getAccounts returns acntSrc not nil if the adrSrc is in the node shard, the same, acntDst will be not nil
// if adrDst is in the node shard. If an error occurs it will be signaled in err variable.
acntSrc, acntDst, err := txProc.getAccounts(adrSrc, adrDst)
if err != nil {
return 0, err
}
return txProc.scProcessor.ExecuteSmartContractTransaction(tx, acntSrc, acntDst)
}
// EpochConfirmed is called whenever a new epoch is confirmed
func (txProc *metaTxProcessor) EpochConfirmed(epoch uint32) {
txProc.flagESDTEnabled.Toggle(epoch >= txProc.esdtEnableEpoch)
log.Debug("txProcessor: esdt", "enabled", txProc.flagESDTEnabled.IsSet())
}
// IsInterfaceNil returns true if there is no value under the interface
func (txProc *metaTxProcessor) IsInterfaceNil() bool {
return txProc == nil
}