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processProxy.go
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processProxy.go
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package processProxy
import (
"sync"
"github.com/multiversx/mx-chain-core-go/core/check"
"github.com/multiversx/mx-chain-core-go/data"
"github.com/multiversx/mx-chain-core-go/data/smartContractResult"
"github.com/multiversx/mx-chain-go/process"
"github.com/multiversx/mx-chain-go/process/smartContract"
"github.com/multiversx/mx-chain-go/process/smartContract/processorV2"
"github.com/multiversx/mx-chain-go/process/smartContract/scrCommon"
"github.com/multiversx/mx-chain-go/state"
logger "github.com/multiversx/mx-chain-logger-go"
vmcommon "github.com/multiversx/mx-chain-vm-common-go"
)
var log = logger.GetOrCreate("processProxy")
var _ process.SmartContractProcessorFacade = (*scProcessorProxy)(nil)
type configuredProcessor uint8
const (
procV1 = iota
procV2
)
type scProcessorProxy struct {
configuredProcessor configuredProcessor
args scrCommon.ArgsNewSmartContractProcessor
processor process.SmartContractProcessorFacade
processorsCache map[configuredProcessor]process.SmartContractProcessorFacade
mutRc sync.RWMutex
}
// TODO -> remove the epochNotifier usage and instead extend EnableEpochsHandler
// that will notify a new epoch *** after *** all its epoch flags are set
// NewSmartContractProcessorProxy creates a smart contract processor proxy
func NewSmartContractProcessorProxy(args scrCommon.ArgsNewSmartContractProcessor, epochNotifier vmcommon.EpochNotifier) (*scProcessorProxy, error) {
proxy := &scProcessorProxy{
args: scrCommon.ArgsNewSmartContractProcessor{
VmContainer: args.VmContainer,
ArgsParser: args.ArgsParser,
Hasher: args.Hasher,
Marshalizer: args.Marshalizer,
AccountsDB: args.AccountsDB,
BlockChainHook: args.BlockChainHook,
BuiltInFunctions: args.BuiltInFunctions,
PubkeyConv: args.PubkeyConv,
ShardCoordinator: args.ShardCoordinator,
ScrForwarder: args.ScrForwarder,
TxFeeHandler: args.TxFeeHandler,
EconomicsFee: args.EconomicsFee,
TxTypeHandler: args.TxTypeHandler,
GasHandler: args.GasHandler,
GasSchedule: args.GasSchedule,
TxLogsProcessor: args.TxLogsProcessor,
BadTxForwarder: args.BadTxForwarder,
EnableRoundsHandler: args.EnableRoundsHandler,
EnableEpochsHandler: args.EnableEpochsHandler,
EnableEpochs: args.EnableEpochs,
VMOutputCacher: args.VMOutputCacher,
WasmVMChangeLocker: args.WasmVMChangeLocker,
IsGenesisProcessing: args.IsGenesisProcessing,
},
}
if check.IfNil(epochNotifier) {
return nil, process.ErrNilEpochNotifier
}
proxy.processorsCache = make(map[configuredProcessor]process.SmartContractProcessorFacade)
var err error
err = proxy.createProcessorV1()
if err != nil {
return nil, err
}
err = proxy.createProcessorV2()
if err != nil {
return nil, err
}
epochNotifier.RegisterNotifyHandler(proxy)
return proxy, nil
}
func (proxy *scProcessorProxy) createProcessorV1() error {
processor, err := smartContract.NewSmartContractProcessor(proxy.args)
proxy.processorsCache[procV1] = processor
return err
}
func (proxy *scProcessorProxy) createProcessorV2() error {
processor, err := processorV2.NewSmartContractProcessorV2(proxy.args)
proxy.processorsCache[procV2] = processor
return err
}
func (proxy *scProcessorProxy) setActiveProcessorV1() {
proxy.setActiveProcessor(procV1)
}
func (proxy *scProcessorProxy) setActiveProcessorV2() {
proxy.setActiveProcessor(procV2)
}
func (proxy *scProcessorProxy) setActiveProcessor(version configuredProcessor) {
log.Info("processorProxy", "configured", version)
proxy.configuredProcessor = version
proxy.processor = proxy.processorsCache[version]
}
func (proxy *scProcessorProxy) getProcessor() process.SmartContractProcessorFacade {
proxy.mutRc.RLock()
defer proxy.mutRc.RUnlock()
return proxy.processor
}
// ExecuteSmartContractTransaction delegates to selected processor
func (proxy *scProcessorProxy) ExecuteSmartContractTransaction(tx data.TransactionHandler, acntSrc, acntDst state.UserAccountHandler) (vmcommon.ReturnCode, error) {
return proxy.getProcessor().ExecuteSmartContractTransaction(tx, acntSrc, acntDst)
}
// ExecuteBuiltInFunction delegates to selected processor
func (proxy *scProcessorProxy) ExecuteBuiltInFunction(tx data.TransactionHandler, acntSrc, acntDst state.UserAccountHandler) (vmcommon.ReturnCode, error) {
return proxy.getProcessor().ExecuteBuiltInFunction(tx, acntSrc, acntDst)
}
// DeploySmartContract delegates to selected processor
func (proxy *scProcessorProxy) DeploySmartContract(tx data.TransactionHandler, acntSrc state.UserAccountHandler) (vmcommon.ReturnCode, error) {
return proxy.getProcessor().DeploySmartContract(tx, acntSrc)
}
// ProcessIfError delegates to selected processor
func (proxy *scProcessorProxy) ProcessIfError(acntSnd state.UserAccountHandler, txHash []byte, tx data.TransactionHandler, returnCode string, returnMessage []byte, snapshot int, gasLocked uint64) error {
return proxy.getProcessor().ProcessIfError(acntSnd, txHash, tx, returnCode, returnMessage, snapshot, gasLocked)
}
// IsPayable delegates to selected processor
func (proxy *scProcessorProxy) IsPayable(sndAddress []byte, recvAddress []byte) (bool, error) {
return proxy.getProcessor().IsPayable(sndAddress, recvAddress)
}
// ProcessSmartContractResult delegates to selected processor
func (proxy *scProcessorProxy) ProcessSmartContractResult(scr *smartContractResult.SmartContractResult) (vmcommon.ReturnCode, error) {
return proxy.getProcessor().ProcessSmartContractResult(scr)
}
// CheckBuiltinFunctionIsExecutable delegates to selected professor
func (proxy *scProcessorProxy) CheckBuiltinFunctionIsExecutable(expectedBuiltinFunction string, tx data.TransactionHandler) error {
return proxy.getProcessor().CheckBuiltinFunctionIsExecutable(expectedBuiltinFunction, tx)
}
// IsInterfaceNil returns true if there is no value under the interface
func (proxy *scProcessorProxy) IsInterfaceNil() bool {
return proxy == nil
}
// EpochConfirmed is called whenever a new epoch is confirmed
func (proxy *scProcessorProxy) EpochConfirmed(_ uint32, _ uint64) {
proxy.mutRc.Lock()
defer proxy.mutRc.Unlock()
if proxy.args.EnableEpochsHandler.IsSCProcessorV2FlagEnabled() {
proxy.setActiveProcessorV2()
return
}
proxy.setActiveProcessorV1()
}