app.go

package app

import (
	"fmt"
	"io"
	"math/big"
	"os"

	bam "github.com/cosmos/cosmos-sdk/baseapp"
	"github.com/cosmos/cosmos-sdk/codec"
	"github.com/cosmos/cosmos-sdk/server/config"
	"github.com/cosmos/cosmos-sdk/simapp"
	sdk "github.com/cosmos/cosmos-sdk/types"
	"github.com/cosmos/cosmos-sdk/types/module"
	"github.com/cosmos/cosmos-sdk/version"
	"github.com/cosmos/cosmos-sdk/x/auth"
	"github.com/cosmos/cosmos-sdk/x/bank"
	"github.com/cosmos/cosmos-sdk/x/crisis"
	"github.com/cosmos/cosmos-sdk/x/mint"
	"github.com/cosmos/cosmos-sdk/x/supply"
	"github.com/cosmos/cosmos-sdk/x/upgrade"
	"github.com/okex/exchain/app/ante"
	okexchaincodec "github.com/okex/exchain/app/codec"
	appconfig "github.com/okex/exchain/app/config"
	"github.com/okex/exchain/app/refund"
	okexchain "github.com/okex/exchain/app/types"
	"github.com/okex/exchain/x/ammswap"
	"github.com/okex/exchain/x/backend"
	"github.com/okex/exchain/x/common/perf"
	commonversion "github.com/okex/exchain/x/common/version"
	"github.com/okex/exchain/x/debug"
	"github.com/okex/exchain/x/dex"
	dexclient "github.com/okex/exchain/x/dex/client"
	distr "github.com/okex/exchain/x/distribution"
	"github.com/okex/exchain/x/evidence"
	"github.com/okex/exchain/x/evm"
	evmclient "github.com/okex/exchain/x/evm/client"
	evmtypes "github.com/okex/exchain/x/evm/types"
	"github.com/okex/exchain/x/farm"
	farmclient "github.com/okex/exchain/x/farm/client"
	"github.com/okex/exchain/x/genutil"
	"github.com/okex/exchain/x/gov"
	"github.com/okex/exchain/x/gov/keeper"
	"github.com/okex/exchain/x/order"
	"github.com/okex/exchain/x/params"
	paramsclient "github.com/okex/exchain/x/params/client"
	"github.com/okex/exchain/x/slashing"
	"github.com/okex/exchain/x/staking"
	"github.com/okex/exchain/x/stream"
	"github.com/okex/exchain/x/token"
	abci "github.com/tendermint/tendermint/abci/types"
	"github.com/tendermint/tendermint/crypto/tmhash"
	"github.com/tendermint/tendermint/libs/log"
	tmos "github.com/tendermint/tendermint/libs/os"
	dbm "github.com/tendermint/tm-db"
)

func init() {
	// set the address prefixes
	config := sdk.GetConfig()
	okexchain.SetBech32Prefixes(config)
	okexchain.SetBip44CoinType(config)
}

const (
	appName = "OKExChain"
)

var (
	// DefaultCLIHome sets the default home directories for the application CLI
	DefaultCLIHome = os.ExpandEnv("$HOME/.exchaincli")

	// DefaultNodeHome sets the folder where the applcation data and configuration will be stored
	DefaultNodeHome = os.ExpandEnv("$HOME/.exchaind")

	// ModuleBasics defines the module BasicManager is in charge of setting up basic,
	// non-dependant module elements, such as codec registration
	// and genesis verification.
	ModuleBasics = module.NewBasicManager(
		auth.AppModuleBasic{},
		supply.AppModuleBasic{},
		genutil.AppModuleBasic{},
		bank.AppModuleBasic{},
		staking.AppModuleBasic{},
		mint.AppModuleBasic{},
		distr.AppModuleBasic{},
		gov.NewAppModuleBasic(
			paramsclient.ProposalHandler, distr.ProposalHandler,
			dexclient.DelistProposalHandler, farmclient.ManageWhiteListProposalHandler,
			evmclient.ManageContractDeploymentWhitelistProposalHandler,
			evmclient.ManageContractBlockedListProposalHandler,
		),
		params.AppModuleBasic{},
		crisis.AppModuleBasic{},
		slashing.AppModuleBasic{},
		evidence.AppModuleBasic{},
		upgrade.AppModuleBasic{},
		evm.AppModuleBasic{},

		token.AppModuleBasic{},
		dex.AppModuleBasic{},
		order.AppModuleBasic{},
		backend.AppModuleBasic{},
		stream.AppModuleBasic{},
		debug.AppModuleBasic{},
		ammswap.AppModuleBasic{},
		farm.AppModuleBasic{},
	)

	// module account permissions
	maccPerms = map[string][]string{
		auth.FeeCollectorName:     nil,
		distr.ModuleName:          nil,
		mint.ModuleName:           {supply.Minter},
		staking.BondedPoolName:    {supply.Burner, supply.Staking},
		staking.NotBondedPoolName: {supply.Burner, supply.Staking},
		gov.ModuleName:            nil,
		token.ModuleName:          {supply.Minter, supply.Burner},
		dex.ModuleName:            nil,
		order.ModuleName:          nil,
		backend.ModuleName:        nil,
		ammswap.ModuleName:        {supply.Minter, supply.Burner},
		farm.ModuleName:           nil,
		farm.YieldFarmingAccount:  nil,
		farm.MintFarmingAccount:   {supply.Burner},
	}

	GlobalGpIndex = GasPriceIndex{}
)

var _ simapp.App = (*OKExChainApp)(nil)

// OKExChainApp implements an extended ABCI application. It is an application
// that may process transactions through Ethereum's EVM running atop of
// Tendermint consensus.
type OKExChainApp struct {
	*bam.BaseApp
	cdc *codec.Codec

	invCheckPeriod uint

	// keys to access the substores
	keys  map[string]*sdk.KVStoreKey
	tkeys map[string]*sdk.TransientStoreKey

	// subspaces
	subspaces map[string]params.Subspace

	// keepers
	AccountKeeper  auth.AccountKeeper
	BankKeeper     bank.Keeper
	SupplyKeeper   supply.Keeper
	StakingKeeper  staking.Keeper
	SlashingKeeper slashing.Keeper
	MintKeeper     mint.Keeper
	DistrKeeper    distr.Keeper
	GovKeeper      gov.Keeper
	CrisisKeeper   crisis.Keeper
	UpgradeKeeper  upgrade.Keeper
	ParamsKeeper   params.Keeper
	EvidenceKeeper evidence.Keeper
	EvmKeeper      *evm.Keeper
	TokenKeeper    token.Keeper
	DexKeeper      dex.Keeper
	OrderKeeper    order.Keeper
	SwapKeeper     ammswap.Keeper
	FarmKeeper     farm.Keeper
	BackendKeeper  backend.Keeper
	StreamKeeper   stream.Keeper

	// the module manager
	mm *module.Manager

	// simulation manager
	sm *module.SimulationManager

	blockGasPrice []*big.Int
}

// NewOKExChainApp returns a reference to a new initialized OKExChain application.
func NewOKExChainApp(
	logger log.Logger,
	db dbm.DB,
	traceStore io.Writer,
	loadLatest bool,
	skipUpgradeHeights map[int64]bool,
	invCheckPeriod uint,
	baseAppOptions ...func(*bam.BaseApp),
) *OKExChainApp {
	// get config
	appConfig, err := config.ParseConfig()
	if err != nil {
		logger.Error(fmt.Sprintf("the config of OKExChain was parsed error : %s", err.Error()))
		panic(err)
	}

	cdc := okexchaincodec.MakeCodec(ModuleBasics)

	// NOTE we use custom OKExChain transaction decoder that supports the sdk.Tx interface instead of sdk.StdTx
	bApp := bam.NewBaseApp(appName, logger, db, evm.TxDecoder(cdc), baseAppOptions...)
	bApp.SetCommitMultiStoreTracer(traceStore)
	bApp.SetAppVersion(version.Version)

	keys := sdk.NewKVStoreKeys(
		bam.MainStoreKey, auth.StoreKey, staking.StoreKey,
		supply.StoreKey, mint.StoreKey, distr.StoreKey, slashing.StoreKey,
		gov.StoreKey, params.StoreKey, upgrade.StoreKey, evidence.StoreKey,
		evm.StoreKey, token.StoreKey, token.KeyLock, dex.StoreKey, dex.TokenPairStoreKey,
		order.OrderStoreKey, ammswap.StoreKey, farm.StoreKey,
	)

	tkeys := sdk.NewTransientStoreKeys(params.TStoreKey)

	app := &OKExChainApp{
		BaseApp:        bApp,
		cdc:            cdc,
		invCheckPeriod: invCheckPeriod,
		keys:           keys,
		tkeys:          tkeys,
		subspaces:      make(map[string]params.Subspace),
	}

	// init params keeper and subspaces
	app.ParamsKeeper = params.NewKeeper(cdc, keys[params.StoreKey], tkeys[params.TStoreKey])
	app.subspaces[auth.ModuleName] = app.ParamsKeeper.Subspace(auth.DefaultParamspace)
	app.subspaces[bank.ModuleName] = app.ParamsKeeper.Subspace(bank.DefaultParamspace)
	app.subspaces[staking.ModuleName] = app.ParamsKeeper.Subspace(staking.DefaultParamspace)
	app.subspaces[mint.ModuleName] = app.ParamsKeeper.Subspace(mint.DefaultParamspace)
	app.subspaces[distr.ModuleName] = app.ParamsKeeper.Subspace(distr.DefaultParamspace)
	app.subspaces[slashing.ModuleName] = app.ParamsKeeper.Subspace(slashing.DefaultParamspace)
	app.subspaces[gov.ModuleName] = app.ParamsKeeper.Subspace(gov.DefaultParamspace)
	app.subspaces[crisis.ModuleName] = app.ParamsKeeper.Subspace(crisis.DefaultParamspace)
	app.subspaces[evidence.ModuleName] = app.ParamsKeeper.Subspace(evidence.DefaultParamspace)
	app.subspaces[evm.ModuleName] = app.ParamsKeeper.Subspace(evm.DefaultParamspace)
	app.subspaces[token.ModuleName] = app.ParamsKeeper.Subspace(token.DefaultParamspace)
	app.subspaces[dex.ModuleName] = app.ParamsKeeper.Subspace(dex.DefaultParamspace)
	app.subspaces[order.ModuleName] = app.ParamsKeeper.Subspace(order.DefaultParamspace)
	app.subspaces[ammswap.ModuleName] = app.ParamsKeeper.Subspace(ammswap.DefaultParamspace)
	app.subspaces[farm.ModuleName] = app.ParamsKeeper.Subspace(farm.DefaultParamspace)

	// use custom OKExChain account for contracts
	app.AccountKeeper = auth.NewAccountKeeper(
		cdc, keys[auth.StoreKey], app.subspaces[auth.ModuleName], okexchain.ProtoAccount,
	)

	app.BankKeeper = bank.NewBaseKeeper(
		&app.AccountKeeper, app.subspaces[bank.ModuleName], app.ModuleAccountAddrs(),
	)
	app.ParamsKeeper.SetBankKeeper(app.BankKeeper)
	app.SupplyKeeper = supply.NewKeeper(
		cdc, keys[supply.StoreKey], &app.AccountKeeper, app.BankKeeper, maccPerms,
	)
	stakingKeeper := staking.NewKeeper(
		cdc, keys[staking.StoreKey], app.SupplyKeeper, app.subspaces[staking.ModuleName],
	)
	app.ParamsKeeper.SetStakingKeeper(stakingKeeper)
	app.MintKeeper = mint.NewKeeper(
		cdc, keys[mint.StoreKey], app.subspaces[mint.ModuleName], &stakingKeeper,
		app.SupplyKeeper, auth.FeeCollectorName, farm.MintFarmingAccount,
	)
	app.DistrKeeper = distr.NewKeeper(
		cdc, keys[distr.StoreKey], app.subspaces[distr.ModuleName], &stakingKeeper,
		app.SupplyKeeper, auth.FeeCollectorName, app.ModuleAccountAddrs(),
	)
	app.SlashingKeeper = slashing.NewKeeper(
		cdc, keys[slashing.StoreKey], &stakingKeeper, app.subspaces[slashing.ModuleName],
	)
	app.CrisisKeeper = crisis.NewKeeper(
		app.subspaces[crisis.ModuleName], invCheckPeriod, app.SupplyKeeper, auth.FeeCollectorName,
	)
	app.UpgradeKeeper = upgrade.NewKeeper(skipUpgradeHeights, keys[upgrade.StoreKey], app.cdc)
	app.EvmKeeper = evm.NewKeeper(
		app.cdc, keys[evm.StoreKey], app.subspaces[evm.ModuleName], &app.AccountKeeper, app.SupplyKeeper, app.BankKeeper)

	app.TokenKeeper = token.NewKeeper(app.BankKeeper, app.subspaces[token.ModuleName], auth.FeeCollectorName, app.SupplyKeeper,
		keys[token.StoreKey], keys[token.KeyLock],
		app.cdc, appConfig.BackendConfig.EnableBackend, &app.AccountKeeper)

	app.DexKeeper = dex.NewKeeper(auth.FeeCollectorName, app.SupplyKeeper, app.subspaces[dex.ModuleName], app.TokenKeeper, &stakingKeeper,
		app.BankKeeper, app.keys[dex.StoreKey], app.keys[dex.TokenPairStoreKey], app.cdc)

	app.OrderKeeper = order.NewKeeper(
		app.TokenKeeper, app.SupplyKeeper, app.DexKeeper, app.subspaces[order.ModuleName], auth.FeeCollectorName,
		app.keys[order.OrderStoreKey], app.cdc, appConfig.BackendConfig.EnableBackend, orderMetrics,
	)

	app.SwapKeeper = ammswap.NewKeeper(app.SupplyKeeper, app.TokenKeeper, app.cdc, app.keys[ammswap.StoreKey], app.subspaces[ammswap.ModuleName])

	app.FarmKeeper = farm.NewKeeper(auth.FeeCollectorName, app.SupplyKeeper, app.TokenKeeper, app.SwapKeeper, app.subspaces[farm.StoreKey],
		app.keys[farm.StoreKey], app.cdc)

	app.StreamKeeper = stream.NewKeeper(app.OrderKeeper, app.TokenKeeper, &app.DexKeeper, &app.AccountKeeper, &app.SwapKeeper,
		&app.FarmKeeper, app.cdc, logger, appConfig, streamMetrics)
	app.BackendKeeper = backend.NewKeeper(app.OrderKeeper, app.TokenKeeper, &app.DexKeeper, &app.SwapKeeper, &app.FarmKeeper,
		app.MintKeeper, app.StreamKeeper.GetMarketKeeper(), app.cdc, logger, appConfig.BackendConfig)

	// create evidence keeper with router
	evidenceKeeper := evidence.NewKeeper(
		cdc, keys[evidence.StoreKey], app.subspaces[evidence.ModuleName], &app.StakingKeeper, app.SlashingKeeper,
	)
	evidenceRouter := evidence.NewRouter()
	evidenceKeeper.SetRouter(evidenceRouter)
	app.EvidenceKeeper = *evidenceKeeper

	// register the proposal types
	// 3.register the proposal types
	govRouter := gov.NewRouter()
	govRouter.AddRoute(gov.RouterKey, gov.ProposalHandler).
		AddRoute(params.RouterKey, params.NewParamChangeProposalHandler(&app.ParamsKeeper)).
		AddRoute(distr.RouterKey, distr.NewCommunityPoolSpendProposalHandler(app.DistrKeeper)).
		AddRoute(dex.RouterKey, dex.NewProposalHandler(&app.DexKeeper)).
		AddRoute(farm.RouterKey, farm.NewManageWhiteListProposalHandler(&app.FarmKeeper)).
		AddRoute(evm.RouterKey, evm.NewManageContractDeploymentWhitelistProposalHandler(app.EvmKeeper))
	govProposalHandlerRouter := keeper.NewProposalHandlerRouter()
	govProposalHandlerRouter.AddRoute(params.RouterKey, &app.ParamsKeeper).
		AddRoute(dex.RouterKey, &app.DexKeeper).
		AddRoute(farm.RouterKey, &app.FarmKeeper).
		AddRoute(evm.RouterKey, app.EvmKeeper)
	app.GovKeeper = gov.NewKeeper(
		app.cdc, app.keys[gov.StoreKey], app.ParamsKeeper, app.subspaces[gov.DefaultParamspace],
		app.SupplyKeeper, &stakingKeeper, gov.DefaultParamspace, govRouter,
		app.BankKeeper, govProposalHandlerRouter, auth.FeeCollectorName,
	)
	app.ParamsKeeper.SetGovKeeper(app.GovKeeper)
	app.DexKeeper.SetGovKeeper(app.GovKeeper)
	app.FarmKeeper.SetGovKeeper(app.GovKeeper)
	app.EvmKeeper.SetGovKeeper(app.GovKeeper)

	// register the staking hooks
	// NOTE: stakingKeeper above is passed by reference, so that it will contain these hooks
	app.StakingKeeper = *stakingKeeper.SetHooks(
		staking.NewMultiStakingHooks(app.DistrKeeper.Hooks(), app.SlashingKeeper.Hooks()),
	)

	// NOTE: Any module instantiated in the module manager that is later modified
	// must be passed by reference here.
	app.mm = module.NewManager(
		genutil.NewAppModule(app.AccountKeeper, app.StakingKeeper, app.BaseApp.DeliverTx),
		auth.NewAppModule(app.AccountKeeper),
		bank.NewAppModule(app.BankKeeper, app.AccountKeeper),
		crisis.NewAppModule(&app.CrisisKeeper),
		supply.NewAppModule(app.SupplyKeeper, app.AccountKeeper),
		gov.NewAppModule(app.GovKeeper, app.SupplyKeeper),
		mint.NewAppModule(app.MintKeeper),
		slashing.NewAppModule(app.SlashingKeeper, app.AccountKeeper, app.StakingKeeper),
		distr.NewAppModule(app.DistrKeeper, app.SupplyKeeper),
		staking.NewAppModule(app.StakingKeeper, app.AccountKeeper, app.SupplyKeeper),
		evidence.NewAppModule(app.EvidenceKeeper),
		evm.NewAppModule(app.EvmKeeper, &app.AccountKeeper),
		token.NewAppModule(commonversion.ProtocolVersionV0, app.TokenKeeper, app.SupplyKeeper),
		dex.NewAppModule(commonversion.ProtocolVersionV0, app.DexKeeper, app.SupplyKeeper),
		order.NewAppModule(commonversion.ProtocolVersionV0, app.OrderKeeper, app.SupplyKeeper),
		ammswap.NewAppModule(app.SwapKeeper),
		farm.NewAppModule(app.FarmKeeper),
		backend.NewAppModule(app.BackendKeeper),
		stream.NewAppModule(app.StreamKeeper),
		params.NewAppModule(app.ParamsKeeper),
	)

	// During begin block slashing happens after distr.BeginBlocker so that
	// there is nothing left over in the validator fee pool, so as to keep the
	// CanWithdrawInvariant invariant.
	app.mm.SetOrderBeginBlockers(
		stream.ModuleName,
		order.ModuleName,
		token.ModuleName,
		dex.ModuleName,
		mint.ModuleName,
		distr.ModuleName,
		slashing.ModuleName,
		staking.ModuleName,
		farm.ModuleName,
		evidence.ModuleName,
		evm.ModuleName,
	)
	app.mm.SetOrderEndBlockers(
		crisis.ModuleName,
		gov.ModuleName,
		dex.ModuleName,
		order.ModuleName,
		staking.ModuleName,
		backend.ModuleName,
		stream.ModuleName,
		evm.ModuleName,
	)

	// NOTE: The genutils module must occur after staking so that pools are
	// properly initialized with tokens from genesis accounts.
	app.mm.SetOrderInitGenesis(
		auth.ModuleName, distr.ModuleName, staking.ModuleName, bank.ModuleName,
		slashing.ModuleName, gov.ModuleName, mint.ModuleName, supply.ModuleName,
		token.ModuleName, dex.ModuleName, order.ModuleName, ammswap.ModuleName, farm.ModuleName,
		evm.ModuleName, crisis.ModuleName, genutil.ModuleName, params.ModuleName, evidence.ModuleName,
	)

	app.mm.RegisterInvariants(&app.CrisisKeeper)
	app.mm.RegisterRoutes(app.Router(), app.QueryRouter())

	// create the simulation manager and define the order of the modules for deterministic simulations
	//
	// NOTE: this is not required apps that don't use the simulator for fuzz testing
	// transactions
	app.sm = module.NewSimulationManager(
		auth.NewAppModule(app.AccountKeeper),
		bank.NewAppModule(app.BankKeeper, app.AccountKeeper),
		supply.NewAppModule(app.SupplyKeeper, app.AccountKeeper),
		gov.NewAppModule(app.GovKeeper, app.SupplyKeeper),
		mint.NewAppModule(app.MintKeeper),
		staking.NewAppModule(app.StakingKeeper, app.AccountKeeper, app.SupplyKeeper),
		distr.NewAppModule(app.DistrKeeper, app.SupplyKeeper),
		slashing.NewAppModule(app.SlashingKeeper, app.AccountKeeper, app.StakingKeeper),
		params.NewAppModule(app.ParamsKeeper), // NOTE: only used for simulation to generate randomized param change proposals
	)

	app.sm.RegisterStoreDecoders()

	// initialize stores
	app.MountKVStores(keys)
	app.MountTransientStores(tkeys)

	// initialize BaseApp
	app.SetInitChainer(app.InitChainer)
	app.SetBeginBlocker(app.BeginBlocker)
	app.SetAnteHandler(ante.NewAnteHandler(app.AccountKeeper, app.EvmKeeper, app.SupplyKeeper, validateMsgHook(app.OrderKeeper)))
	app.SetEndBlocker(app.EndBlocker)
	app.SetGasRefundHandler(refund.NewGasRefundHandler(app.AccountKeeper, app.SupplyKeeper))
	app.SetAccHandler(NewAccHandler(app.AccountKeeper))

	if loadLatest {
		err := app.LoadLatestVersion(app.keys[bam.MainStoreKey])
		if err != nil {
			tmos.Exit(err.Error())
		}
	}
	return app
}

func (app *OKExChainApp) LoadStartVersion(height int64) error {
	return app.LoadVersion(height, app.keys[bam.MainStoreKey])
}

// Name returns the name of the App
func (app *OKExChainApp) Name() string { return app.BaseApp.Name() }

// BeginBlocker updates every begin block
func (app *OKExChainApp) BeginBlocker(ctx sdk.Context, req abci.RequestBeginBlock) abci.ResponseBeginBlock {
	return app.mm.BeginBlock(ctx, req)
}

// EndBlocker updates every end block
func (app *OKExChainApp) EndBlocker(ctx sdk.Context, req abci.RequestEndBlock) abci.ResponseEndBlock {
	if appconfig.GetOecConfig().GetEnableDynamicGp() {
		GlobalGpIndex = CalBlockGasPriceIndex(app.blockGasPrice, appconfig.GetOecConfig().GetDynamicGpWeight())
		app.blockGasPrice = app.blockGasPrice[:0]
	}

	return app.mm.EndBlock(ctx, req)
}

func (app *OKExChainApp) DeliverTx(req abci.RequestDeliverTx) (res abci.ResponseDeliverTx) {

	seq := perf.GetPerf().OnAppDeliverTxEnter(app.LastBlockHeight() + 1)
	defer perf.GetPerf().OnAppDeliverTxExit(app.LastBlockHeight()+1, seq)

	resp := app.BaseApp.DeliverTx(req)
	if (app.BackendKeeper.Config.EnableBackend || app.StreamKeeper.AnalysisEnable()) && resp.IsOK() {
		app.syncTx(req.Tx)
	}

	if appconfig.GetOecConfig().GetEnableDynamicGp() {
		tx, err := evm.TxDecoder(app.Codec())(req.Tx)
		if err == nil {
			app.blockGasPrice = append(app.blockGasPrice, tx.GetTxInfo(app.GetDeliverStateCtx()).GasPrice)
		}
	}

	return resp
}

func (app *OKExChainApp) syncTx(txBytes []byte) {

	if tx, err := auth.DefaultTxDecoder(app.Codec())(txBytes); err == nil {
		if stdTx, ok := tx.(auth.StdTx); ok {
			txHash := fmt.Sprintf("%X", tmhash.Sum(txBytes))
			app.Logger().Debug(fmt.Sprintf("[Sync Tx(%s) to backend module]", txHash))
			ctx := app.GetDeliverStateCtx()
			app.BackendKeeper.SyncTx(ctx, &stdTx, txHash,
				ctx.BlockHeader().Time.Unix())
			app.StreamKeeper.SyncTx(ctx, &stdTx, txHash,
				ctx.BlockHeader().Time.Unix())
		}
	}
}

// InitChainer updates at chain initialization
func (app *OKExChainApp) InitChainer(ctx sdk.Context, req abci.RequestInitChain) abci.ResponseInitChain {

	perf.GetPerf().InitChainer(app.Logger())

	var genesisState simapp.GenesisState
	app.cdc.MustUnmarshalJSON(req.AppStateBytes, &genesisState)
	return app.mm.InitGenesis(ctx, genesisState)
}

// LoadHeight loads state at a particular height
func (app *OKExChainApp) LoadHeight(height int64) error {
	return app.LoadVersion(height, app.keys[bam.MainStoreKey])
}

// ModuleAccountAddrs returns all the app's module account addresses.
func (app *OKExChainApp) ModuleAccountAddrs() map[string]bool {
	modAccAddrs := make(map[string]bool)
	for acc := range maccPerms {
		modAccAddrs[supply.NewModuleAddress(acc).String()] = true
	}

	return modAccAddrs
}

// SimulationManager implements the SimulationApp interface
func (app *OKExChainApp) SimulationManager() *module.SimulationManager {
	return app.sm
}

// GetKey returns the KVStoreKey for the provided store key.
//
// NOTE: This is solely to be used for testing purposes.
func (app *OKExChainApp) GetKey(storeKey string) *sdk.KVStoreKey {
	return app.keys[storeKey]
}

// Codec returns OKExChain's codec.
//
// NOTE: This is solely to be used for testing purposes as it may be desirable
// for modules to register their own custom testing types.
func (app *OKExChainApp) Codec() *codec.Codec {
	return app.cdc
}

// GetSubspace returns a param subspace for a given module name.
//
// NOTE: This is solely to be used for testing purposes.
func (app *OKExChainApp) GetSubspace(moduleName string) params.Subspace {
	return app.subspaces[moduleName]
}

// BeginBlock implements the Application interface
func (app *OKExChainApp) BeginBlock(req abci.RequestBeginBlock) (res abci.ResponseBeginBlock) {

	seq := perf.GetPerf().OnAppBeginBlockEnter(app.LastBlockHeight() + 1)
	defer perf.GetPerf().OnAppBeginBlockExit(app.LastBlockHeight()+1, seq)

	return app.BaseApp.BeginBlock(req)
}

// EndBlock implements the Application interface
func (app *OKExChainApp) EndBlock(req abci.RequestEndBlock) (res abci.ResponseEndBlock) {

	seq := perf.GetPerf().OnAppEndBlockEnter(app.LastBlockHeight() + 1)
	defer perf.GetPerf().OnAppEndBlockExit(app.LastBlockHeight()+1, seq)

	return app.BaseApp.EndBlock(req)
}

// Commit implements the Application interface
func (app *OKExChainApp) Commit() abci.ResponseCommit {

	seq := perf.GetPerf().OnCommitEnter(app.LastBlockHeight() + 1)
	defer perf.GetPerf().OnCommitExit(app.LastBlockHeight()+1, seq, app.Logger())
	res := app.BaseApp.Commit()
	return res
}

// GetMaccPerms returns a copy of the module account permissions
func GetMaccPerms() map[string][]string {
	dupMaccPerms := make(map[string][]string)
	for k, v := range maccPerms {
		dupMaccPerms[k] = v
	}

	return dupMaccPerms
}

func validateMsgHook(orderKeeper order.Keeper) ante.ValidateMsgHandler {
	return func(newCtx sdk.Context, msgs []sdk.Msg) error {

		wrongMsgErr := sdk.ErrUnknownRequest(
			"It is not allowed that a transaction with more than one message contains order or evm message")
		var err error

		for _, msg := range msgs {
			switch assertedMsg := msg.(type) {
			case order.MsgNewOrders:
				if len(msgs) > 1 {
					return wrongMsgErr
				}
				_, err = order.ValidateMsgNewOrders(newCtx, orderKeeper, assertedMsg)
			case order.MsgCancelOrders:
				if len(msgs) > 1 {
					return wrongMsgErr
				}
				err = order.ValidateMsgCancelOrders(newCtx, orderKeeper, assertedMsg)
			case evmtypes.MsgEthereumTx:
				if len(msgs) > 1 {
					return wrongMsgErr
				}
			case evmtypes.MsgEthermint:
				if len(msgs) > 1 {
					return wrongMsgErr
				}
			}

			if err != nil {
				return err
			}
		}
		return nil
	}
}

func NewAccHandler(ak auth.AccountKeeper) sdk.AccHandler {
	return func(
		ctx sdk.Context, addr sdk.AccAddress,
	) uint64 {
		return ak.GetAccount(ctx, addr).GetSequence()
	}
}