Remove gaia (#4347)

Gaia is removed from cosmos-sdk repository.

Few changes were required to make sure no packages depend on gaia subpackages.

CI config is amended accordingly.

Unnecessary targets are removed from Makefile.

Simulations run through a lightweight version of gaia renamed to simapp.

Closes: #4104

simapp/app.go

@@ -0,0 +1,240 @@
+package simapp
+
+import (
+	"io"
+	"os"
+
+	bam "github.com/cosmos/cosmos-sdk/baseapp"
+	"github.com/cosmos/cosmos-sdk/codec"
+	sdk "github.com/cosmos/cosmos-sdk/types"
+	"github.com/cosmos/cosmos-sdk/version"
+	"github.com/cosmos/cosmos-sdk/x/auth"
+	"github.com/cosmos/cosmos-sdk/x/auth/genaccounts"
+	"github.com/cosmos/cosmos-sdk/x/bank"
+	"github.com/cosmos/cosmos-sdk/x/crisis"
+	distr "github.com/cosmos/cosmos-sdk/x/distribution"
+	"github.com/cosmos/cosmos-sdk/x/genutil"
+	"github.com/cosmos/cosmos-sdk/x/gov"
+	"github.com/cosmos/cosmos-sdk/x/mint"
+	"github.com/cosmos/cosmos-sdk/x/params"
+	"github.com/cosmos/cosmos-sdk/x/slashing"
+	"github.com/cosmos/cosmos-sdk/x/staking"
+
+	abci "github.com/tendermint/tendermint/abci/types"
+	cmn "github.com/tendermint/tendermint/libs/common"
+	dbm "github.com/tendermint/tendermint/libs/db"
+	"github.com/tendermint/tendermint/libs/log"
+)
+
+const appName = "SimApp"
+
+var (
+	// default home directories for the application CLI
+	DefaultCLIHome = os.ExpandEnv("$HOME/.simapp")
+
+	// default home directories for the application daemon
+	DefaultNodeHome = os.ExpandEnv("$HOME/.simapp")
+
+	// The ModuleBasicManager is in charge of setting up basic,
+	// non-dependant module elements, such as codec registration
+	// and genesis verification.
+	ModuleBasics sdk.ModuleBasicManager
+)
+
+func init() {
+	ModuleBasics = sdk.NewModuleBasicManager(
+		genaccounts.AppModuleBasic{},
+		genutil.AppModuleBasic{},
+		auth.AppModuleBasic{},
+		bank.AppModuleBasic{},
+		staking.AppModuleBasic{},
+		mint.AppModuleBasic{},
+		distr.AppModuleBasic{},
+		gov.AppModuleBasic{},
+		params.AppModuleBasic{},
+		crisis.AppModuleBasic{},
+		slashing.AppModuleBasic{},
+	)
+}
+
+// custom tx codec
+func MakeCodec() *codec.Codec {
+	var cdc = codec.New()
+	ModuleBasics.RegisterCodec(cdc)
+	sdk.RegisterCodec(cdc)
+	codec.RegisterCrypto(cdc)
+	return cdc
+}
+
+// Extended ABCI application
+type SimApp struct {
+	*bam.BaseApp
+	cdc *codec.Codec
+
+	invCheckPeriod uint
+
+	// keys to access the substores
+	keyMain          *sdk.KVStoreKey
+	keyAccount       *sdk.KVStoreKey
+	keyStaking       *sdk.KVStoreKey
+	tkeyStaking      *sdk.TransientStoreKey
+	keySlashing      *sdk.KVStoreKey
+	keyMint          *sdk.KVStoreKey
+	keyDistr         *sdk.KVStoreKey
+	tkeyDistr        *sdk.TransientStoreKey
+	keyGov           *sdk.KVStoreKey
+	keyFeeCollection *sdk.KVStoreKey
+	keyParams        *sdk.KVStoreKey
+	tkeyParams       *sdk.TransientStoreKey
+
+	// keepers
+	accountKeeper       auth.AccountKeeper
+	feeCollectionKeeper auth.FeeCollectionKeeper
+	bankKeeper          bank.Keeper
+	stakingKeeper       staking.Keeper
+	slashingKeeper      slashing.Keeper
+	mintKeeper          mint.Keeper
+	distrKeeper         distr.Keeper
+	govKeeper           gov.Keeper
+	crisisKeeper        crisis.Keeper
+	paramsKeeper        params.Keeper
+
+	// the module manager
+	mm *sdk.ModuleManager
+}
+
+// NewSimApp returns a reference to an initialized SimApp.
+func NewSimApp(logger log.Logger, db dbm.DB, traceStore io.Writer, loadLatest bool,
+	invCheckPeriod uint, baseAppOptions ...func(*bam.BaseApp)) *SimApp {
+
+	cdc := MakeCodec()
+
+	bApp := bam.NewBaseApp(appName, logger, db, auth.DefaultTxDecoder(cdc), baseAppOptions...)
+	bApp.SetCommitMultiStoreTracer(traceStore)
+	bApp.SetAppVersion(version.Version)
+
+	var app = &SimApp{
+		BaseApp:          bApp,
+		cdc:              cdc,
+		invCheckPeriod:   invCheckPeriod,
+		keyMain:          sdk.NewKVStoreKey(bam.MainStoreKey),
+		keyAccount:       sdk.NewKVStoreKey(auth.StoreKey),
+		keyStaking:       sdk.NewKVStoreKey(staking.StoreKey),
+		tkeyStaking:      sdk.NewTransientStoreKey(staking.TStoreKey),
+		keyMint:          sdk.NewKVStoreKey(mint.StoreKey),
+		keyDistr:         sdk.NewKVStoreKey(distr.StoreKey),
+		tkeyDistr:        sdk.NewTransientStoreKey(distr.TStoreKey),
+		keySlashing:      sdk.NewKVStoreKey(slashing.StoreKey),
+		keyGov:           sdk.NewKVStoreKey(gov.StoreKey),
+		keyFeeCollection: sdk.NewKVStoreKey(auth.FeeStoreKey),
+		keyParams:        sdk.NewKVStoreKey(params.StoreKey),
+		tkeyParams:       sdk.NewTransientStoreKey(params.TStoreKey),
+	}
+
+	// init params keeper and subspaces
+	app.paramsKeeper = params.NewKeeper(app.cdc, app.keyParams, app.tkeyParams, params.DefaultCodespace)
+	authSubspace := app.paramsKeeper.Subspace(auth.DefaultParamspace)
+	bankSubspace := app.paramsKeeper.Subspace(bank.DefaultParamspace)
+	stakingSubspace := app.paramsKeeper.Subspace(staking.DefaultParamspace)
+	mintSubspace := app.paramsKeeper.Subspace(mint.DefaultParamspace)
+	distrSubspace := app.paramsKeeper.Subspace(distr.DefaultParamspace)
+	slashingSubspace := app.paramsKeeper.Subspace(slashing.DefaultParamspace)
+	govSubspace := app.paramsKeeper.Subspace(gov.DefaultParamspace)
+	crisisSubspace := app.paramsKeeper.Subspace(crisis.DefaultParamspace)
+
+	// add keepers
+	app.accountKeeper = auth.NewAccountKeeper(app.cdc, app.keyAccount, authSubspace, auth.ProtoBaseAccount)
+	app.bankKeeper = bank.NewBaseKeeper(app.accountKeeper, bankSubspace, bank.DefaultCodespace)
+	app.feeCollectionKeeper = auth.NewFeeCollectionKeeper(app.cdc, app.keyFeeCollection)
+	stakingKeeper := staking.NewKeeper(app.cdc, app.keyStaking, app.tkeyStaking, app.bankKeeper,
+		stakingSubspace, staking.DefaultCodespace)
+	app.mintKeeper = mint.NewKeeper(app.cdc, app.keyMint, mintSubspace, &stakingKeeper, app.feeCollectionKeeper)
+	app.distrKeeper = distr.NewKeeper(app.cdc, app.keyDistr, distrSubspace, app.bankKeeper, &stakingKeeper,
+		app.feeCollectionKeeper, distr.DefaultCodespace)
+	app.slashingKeeper = slashing.NewKeeper(app.cdc, app.keySlashing, &stakingKeeper,
+		slashingSubspace, slashing.DefaultCodespace)
+	app.crisisKeeper = crisis.NewKeeper(crisisSubspace, invCheckPeriod, app.distrKeeper,
+		app.bankKeeper, app.feeCollectionKeeper)
+
+	// register the proposal types
+	govRouter := gov.NewRouter()
+	govRouter.AddRoute(gov.RouterKey, gov.ProposalHandler).
+		AddRoute(params.RouterKey, params.NewParamChangeProposalHandler(app.paramsKeeper))
+	app.govKeeper = gov.NewKeeper(app.cdc, app.keyGov, app.paramsKeeper, govSubspace,
+		app.bankKeeper, &stakingKeeper, gov.DefaultCodespace, govRouter)
+
+	// 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()))
+
+	app.mm = sdk.NewModuleManager(
+		genaccounts.NewAppModule(app.accountKeeper),
+		genutil.NewAppModule(app.accountKeeper, app.stakingKeeper, app.BaseApp.DeliverTx),
+		auth.NewAppModule(app.accountKeeper, app.feeCollectionKeeper),
+		bank.NewAppModule(app.bankKeeper, app.accountKeeper),
+		crisis.NewAppModule(app.crisisKeeper, app.Logger()),
+		distr.NewAppModule(app.distrKeeper),
+		gov.NewAppModule(app.govKeeper),
+		mint.NewAppModule(app.mintKeeper),
+		slashing.NewAppModule(app.slashingKeeper, app.stakingKeeper),
+		staking.NewAppModule(app.stakingKeeper, app.feeCollectionKeeper, app.distrKeeper, app.accountKeeper),
+	)
+
+	// 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(mint.ModuleName, distr.ModuleName, slashing.ModuleName)
+
+	app.mm.SetOrderEndBlockers(gov.ModuleName, staking.ModuleName)
+
+	// genutils must occur after staking so that pools are properly
+	// initialized with tokens from genesis accounts.
+	app.mm.SetOrderInitGenesis(genaccounts.ModuleName, distr.ModuleName,
+		staking.ModuleName, auth.ModuleName, bank.ModuleName, slashing.ModuleName,
+		gov.ModuleName, mint.ModuleName, crisis.ModuleName, genutil.ModuleName)
+
+	app.mm.RegisterInvariants(&app.crisisKeeper)
+	app.mm.RegisterRoutes(app.Router(), app.QueryRouter())
+
+	// initialize stores
+	app.MountStores(app.keyMain, app.keyAccount, app.keyStaking, app.keyMint,
+		app.keyDistr, app.keySlashing, app.keyGov, app.keyFeeCollection,
+		app.keyParams, app.tkeyParams, app.tkeyStaking, app.tkeyDistr)
+
+	// initialize BaseApp
+	app.SetInitChainer(app.InitChainer)
+	app.SetBeginBlocker(app.BeginBlocker)
+	app.SetAnteHandler(auth.NewAnteHandler(app.accountKeeper, app.feeCollectionKeeper, auth.DefaultSigVerificationGasConsumer))
+	app.SetEndBlocker(app.EndBlocker)
+
+	if loadLatest {
+		err := app.LoadLatestVersion(app.keyMain)
+		if err != nil {
+			cmn.Exit(err.Error())
+		}
+	}
+	return app
+}
+
+// application updates every begin block
+func (app *SimApp) BeginBlocker(ctx sdk.Context, req abci.RequestBeginBlock) abci.ResponseBeginBlock {
+	return app.mm.BeginBlock(ctx, req)
+}
+
+// application updates every end block
+func (app *SimApp) EndBlocker(ctx sdk.Context, req abci.RequestEndBlock) abci.ResponseEndBlock {
+	return app.mm.EndBlock(ctx, req)
+}
+
+// application update at chain initialization
+func (app *SimApp) InitChainer(ctx sdk.Context, req abci.RequestInitChain) abci.ResponseInitChain {
+	var genesisState GenesisState
+	app.cdc.MustUnmarshalJSON(req.AppStateBytes, &genesisState)
+	return app.mm.InitGenesis(ctx, genesisState)
+}
+
+// load a particular height
+func (app *SimApp) LoadHeight(height int64) error {
+	return app.LoadVersion(height, app.keyMain)
+}

simapp/app_test.go

@@ -0,0 +1,44 @@
+package simapp
+
+import (
+	"os"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+	"github.com/tendermint/tendermint/libs/db"
+	"github.com/tendermint/tendermint/libs/log"
+
+	"github.com/cosmos/cosmos-sdk/codec"
+
+	abci "github.com/tendermint/tendermint/abci/types"
+)
+
+func TestSimAppExport(t *testing.T) {
+	db := db.NewMemDB()
+	app := NewSimApp(log.NewTMLogger(log.NewSyncWriter(os.Stdout)), db, nil, true, 0)
+	setGenesis(app)
+
+	// Making a new app object with the db, so that initchain hasn't been called
+	app2 := NewSimApp(log.NewTMLogger(log.NewSyncWriter(os.Stdout)), db, nil, true, 0)
+	_, _, err := app2.ExportAppStateAndValidators(false, []string{})
+	require.NoError(t, err, "ExportAppStateAndValidators should not have an error")
+}
+
+func setGenesis(app *SimApp) error {
+	genesisState := NewDefaultGenesisState()
+	stateBytes, err := codec.MarshalJSONIndent(app.cdc, genesisState)
+	if err != nil {
+		return err
+	}
+
+	// Initialize the chain
+	app.InitChain(
+		abci.RequestInitChain{
+			Validators:    []abci.ValidatorUpdate{},
+			AppStateBytes: stateBytes,
+		},
+	)
+
+	app.Commit()
+	return nil
+}

simapp/export.go

@@ -0,0 +1,168 @@
+package simapp
+
+import (
+	"encoding/json"
+	"log"
+
+	abci "github.com/tendermint/tendermint/abci/types"
+	tmtypes "github.com/tendermint/tendermint/types"
+
+	"github.com/cosmos/cosmos-sdk/codec"
+	sdk "github.com/cosmos/cosmos-sdk/types"
+	"github.com/cosmos/cosmos-sdk/x/slashing"
+	"github.com/cosmos/cosmos-sdk/x/staking"
+)
+
+// ExportAppStateAndValidators exports the state of the application for a genesis
+// file.
+func (app *SimApp) ExportAppStateAndValidators(
+	forZeroHeight bool, jailWhiteList []string,
+) (appState json.RawMessage, validators []tmtypes.GenesisValidator, err error) {
+
+	// as if they could withdraw from the start of the next block
+	ctx := app.NewContext(true, abci.Header{Height: app.LastBlockHeight()})
+
+	if forZeroHeight {
+		app.prepForZeroHeightGenesis(ctx, jailWhiteList)
+	}
+
+	genState := app.mm.ExportGenesis(ctx)
+	appState, err = codec.MarshalJSONIndent(app.cdc, genState)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	validators = staking.WriteValidators(ctx, app.stakingKeeper)
+	return appState, validators, nil
+}
+
+// prepare for fresh start at zero height
+// NOTE zero height genesis is a temporary feature which will be deprecated
+//      in favour of export at a block height
+func (app *SimApp) prepForZeroHeightGenesis(ctx sdk.Context, jailWhiteList []string) {
+	applyWhiteList := false
+
+	//Check if there is a whitelist
+	if len(jailWhiteList) > 0 {
+		applyWhiteList = true
+	}
+
+	whiteListMap := make(map[string]bool)
+
+	for _, addr := range jailWhiteList {
+		_, err := sdk.ValAddressFromBech32(addr)
+		if err != nil {
+			log.Fatal(err)
+		}
+		whiteListMap[addr] = true
+	}
+
+	/* Just to be safe, assert the invariants on current state. */
+	app.crisisKeeper.AssertInvariants(ctx, app.Logger())
+
+	/* Handle fee distribution state. */
+
+	// withdraw all validator commission
+	app.stakingKeeper.IterateValidators(ctx, func(_ int64, val sdk.Validator) (stop bool) {
+		_, _ = app.distrKeeper.WithdrawValidatorCommission(ctx, val.GetOperator())
+		return false
+	})
+
+	// withdraw all delegator rewards
+	dels := app.stakingKeeper.GetAllDelegations(ctx)
+	for _, delegation := range dels {
+		_, _ = app.distrKeeper.WithdrawDelegationRewards(ctx, delegation.DelegatorAddress, delegation.ValidatorAddress)
+	}
+
+	// clear validator slash events
+	app.distrKeeper.DeleteAllValidatorSlashEvents(ctx)
+
+	// clear validator historical rewards
+	app.distrKeeper.DeleteAllValidatorHistoricalRewards(ctx)
+
+	// set context height to zero
+	height := ctx.BlockHeight()
+	ctx = ctx.WithBlockHeight(0)
+
+	// reinitialize all validators
+	app.stakingKeeper.IterateValidators(ctx, func(_ int64, val sdk.Validator) (stop bool) {
+
+		// donate any unwithdrawn outstanding reward fraction tokens to the community pool
+		scraps := app.distrKeeper.GetValidatorOutstandingRewards(ctx, val.GetOperator())
+		feePool := app.distrKeeper.GetFeePool(ctx)
+		feePool.CommunityPool = feePool.CommunityPool.Add(scraps)
+		app.distrKeeper.SetFeePool(ctx, feePool)
+
+		app.distrKeeper.Hooks().AfterValidatorCreated(ctx, val.GetOperator())
+		return false
+	})
+
+	// reinitialize all delegations
+	for _, del := range dels {
+		app.distrKeeper.Hooks().BeforeDelegationCreated(ctx, del.DelegatorAddress, del.ValidatorAddress)
+		app.distrKeeper.Hooks().AfterDelegationModified(ctx, del.DelegatorAddress, del.ValidatorAddress)
+	}
+
+	// reset context height
+	ctx = ctx.WithBlockHeight(height)
+
+	/* Handle staking state. */
+
+	// iterate through redelegations, reset creation height
+	app.stakingKeeper.IterateRedelegations(ctx, func(_ int64, red staking.Redelegation) (stop bool) {
+		for i := range red.Entries {
+			red.Entries[i].CreationHeight = 0
+		}
+		app.stakingKeeper.SetRedelegation(ctx, red)
+		return false
+	})
+
+	// iterate through unbonding delegations, reset creation height
+	app.stakingKeeper.IterateUnbondingDelegations(ctx, func(_ int64, ubd staking.UnbondingDelegation) (stop bool) {
+		for i := range ubd.Entries {
+			ubd.Entries[i].CreationHeight = 0
+		}
+		app.stakingKeeper.SetUnbondingDelegation(ctx, ubd)
+		return false
+	})
+
+	// Iterate through validators by power descending, reset bond heights, and
+	// update bond intra-tx counters.
+	store := ctx.KVStore(app.keyStaking)
+	iter := sdk.KVStoreReversePrefixIterator(store, staking.ValidatorsKey)
+	counter := int16(0)
+
+	var valConsAddrs []sdk.ConsAddress
+	for ; iter.Valid(); iter.Next() {
+		addr := sdk.ValAddress(iter.Key()[1:])
+		validator, found := app.stakingKeeper.GetValidator(ctx, addr)
+		if !found {
+			panic("expected validator, not found")
+		}
+
+		validator.UnbondingHeight = 0
+		valConsAddrs = append(valConsAddrs, validator.ConsAddress())
+		if applyWhiteList && !whiteListMap[addr.String()] {
+			validator.Jailed = true
+		}
+
+		app.stakingKeeper.SetValidator(ctx, validator)
+		counter++
+	}
+
+	iter.Close()
+
+	_ = app.stakingKeeper.ApplyAndReturnValidatorSetUpdates(ctx)
+
+	/* Handle slashing state. */
+
+	// reset start height on signing infos
+	app.slashingKeeper.IterateValidatorSigningInfos(
+		ctx,
+		func(addr sdk.ConsAddress, info slashing.ValidatorSigningInfo) (stop bool) {
+			info.StartHeight = 0
+			app.slashingKeeper.SetValidatorSigningInfo(ctx, addr, info)
+			return false
+		},
+	)
+}

simapp/genesis.go

@@ -0,0 +1,19 @@
+package simapp
+
+import (
+	"encoding/json"
+)
+
+// The genesis state of the blockchain is represented here as a map of raw json
+// messages key'd by a identifier string.
+// The identifier is used to determine which module genesis information belongs
+// to so it may be appropriately routed during init chain.
+// Within this application default genesis information is retrieved from
+// the ModuleBasicManager which populates json from each BasicModule
+// object provided to it during init.
+type GenesisState map[string]json.RawMessage
+
+// NewDefaultGenesisState generates the default state for the application.
+func NewDefaultGenesisState() GenesisState {
+	return ModuleBasics.DefaultGenesis()
+}

simapp/sim_test.go

@@ -0,0 +1,633 @@
+package simapp
+
+import (
+	"encoding/json"
+	"flag"
+	"fmt"
+	"io"
+	"io/ioutil"
+	"math/rand"
+	"os"
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/require"
+
+	abci "github.com/tendermint/tendermint/abci/types"
+	"github.com/tendermint/tendermint/crypto/secp256k1"
+	dbm "github.com/tendermint/tendermint/libs/db"
+	"github.com/tendermint/tendermint/libs/log"
+	tmtypes "github.com/tendermint/tendermint/types"
+
+	"github.com/cosmos/cosmos-sdk/baseapp"
+	sdk "github.com/cosmos/cosmos-sdk/types"
+	"github.com/cosmos/cosmos-sdk/x/auth"
+	"github.com/cosmos/cosmos-sdk/x/auth/genaccounts"
+	authsim "github.com/cosmos/cosmos-sdk/x/auth/simulation"
+	"github.com/cosmos/cosmos-sdk/x/bank"
+	banksim "github.com/cosmos/cosmos-sdk/x/bank/simulation"
+	distr "github.com/cosmos/cosmos-sdk/x/distribution"
+	distrsim "github.com/cosmos/cosmos-sdk/x/distribution/simulation"
+	"github.com/cosmos/cosmos-sdk/x/gov"
+	govsim "github.com/cosmos/cosmos-sdk/x/gov/simulation"
+	"github.com/cosmos/cosmos-sdk/x/mint"
+	paramsim "github.com/cosmos/cosmos-sdk/x/params/simulation"
+	"github.com/cosmos/cosmos-sdk/x/simulation"
+	"github.com/cosmos/cosmos-sdk/x/slashing"
+	slashingsim "github.com/cosmos/cosmos-sdk/x/slashing/simulation"
+	"github.com/cosmos/cosmos-sdk/x/staking"
+	stakingsim "github.com/cosmos/cosmos-sdk/x/staking/simulation"
+)
+
+var (
+	genesisFile string
+	seed        int64
+	numBlocks   int
+	blockSize   int
+	enabled     bool
+	verbose     bool
+	lean        bool
+	commit      bool
+	period      int
+)
+
+func init() {
+	flag.StringVar(&genesisFile, "SimulationGenesis", "", "custom simulation genesis file")
+	flag.Int64Var(&seed, "SimulationSeed", 42, "simulation random seed")
+	flag.IntVar(&numBlocks, "SimulationNumBlocks", 500, "number of blocks")
+	flag.IntVar(&blockSize, "SimulationBlockSize", 200, "operations per block")
+	flag.BoolVar(&enabled, "SimulationEnabled", false, "enable the simulation")
+	flag.BoolVar(&verbose, "SimulationVerbose", false, "verbose log output")
+	flag.BoolVar(&lean, "SimulationLean", false, "lean simulation log output")
+	flag.BoolVar(&commit, "SimulationCommit", false, "have the simulation commit")
+	flag.IntVar(&period, "SimulationPeriod", 1, "run slow invariants only once every period assertions")
+}
+
+// helper function for populating input for SimulateFromSeed
+func getSimulateFromSeedInput(tb testing.TB, w io.Writer, app *SimApp) (
+	testing.TB, io.Writer, *baseapp.BaseApp, simulation.AppStateFn, int64,
+	simulation.WeightedOperations, sdk.Invariants, int, int, bool, bool) {
+
+	return tb, w, app.BaseApp, appStateFn, seed,
+		testAndRunTxs(app), invariants(app), numBlocks, blockSize, commit, lean
+}
+
+func appStateFromGenesisFileFn(r *rand.Rand, accs []simulation.Account, genesisTimestamp time.Time,
+) (json.RawMessage, []simulation.Account, string) {
+
+	var genesis tmtypes.GenesisDoc
+	cdc := MakeCodec()
+	bytes, err := ioutil.ReadFile(genesisFile)
+	if err != nil {
+		panic(err)
+	}
+	cdc.MustUnmarshalJSON(bytes, &genesis)
+	var appState GenesisState
+	cdc.MustUnmarshalJSON(genesis.AppState, &appState)
+	accounts := genaccounts.GetGenesisStateFromAppState(cdc, appState).Accounts
+
+	var newAccs []simulation.Account
+	for _, acc := range accounts {
+		// Pick a random private key, since we don't know the actual key
+		// This should be fine as it's only used for mock Tendermint validators
+		// and these keys are never actually used to sign by mock Tendermint.
+		privkeySeed := make([]byte, 15)
+		r.Read(privkeySeed)
+		privKey := secp256k1.GenPrivKeySecp256k1(privkeySeed)
+		newAccs = append(newAccs, simulation.Account{privKey, privKey.PubKey(), acc.Address})
+	}
+	return genesis.AppState, newAccs, genesis.ChainID
+}
+
+// TODO refactor out random initialization code to the modules
+func appStateRandomizedFn(r *rand.Rand, accs []simulation.Account, genesisTimestamp time.Time,
+) (json.RawMessage, []simulation.Account, string) {
+
+	var genesisAccounts []genaccounts.GenesisAccount
+	genesisState := NewDefaultGenesisState()
+	cdc := MakeCodec()
+
+	amount := int64(r.Intn(1e12))
+	numInitiallyBonded := int64(r.Intn(250))
+	numAccs := int64(len(accs))
+	if numInitiallyBonded > numAccs {
+		numInitiallyBonded = numAccs
+	}
+	fmt.Printf("Selected randomly generated parameters for simulated genesis:\n"+
+		"\t{amount of stake per account: %v, initially bonded validators: %v}\n",
+		amount, numInitiallyBonded)
+
+	// randomly generate some genesis accounts
+	for i, acc := range accs {
+		coins := sdk.Coins{sdk.NewCoin(sdk.DefaultBondDenom, sdk.NewInt(amount))}
+		bacc := auth.NewBaseAccountWithAddress(acc.Address)
+		bacc.SetCoins(coins)
+
+		var gacc genaccounts.GenesisAccount
+
+		// Only consider making a vesting account once the initial bonded validator
+		// set is exhausted due to needing to track DelegatedVesting.
+		if int64(i) > numInitiallyBonded && r.Intn(100) < 50 {
+			var (
+				vacc    auth.VestingAccount
+				endTime int64
+			)
+
+			startTime := genesisTimestamp.Unix()
+
+			// Allow for some vesting accounts to vest very quickly while others very
+			// slowly.
+			if r.Intn(100) < 50 {
+				endTime = int64(simulation.RandIntBetween(r, int(startTime), int(startTime+(60*60*24*30))))
+			} else {
+				endTime = int64(simulation.RandIntBetween(r, int(startTime), int(startTime+(60*60*12))))
+			}
+
+			if startTime == endTime {
+				endTime++
+			}
+
+			if r.Intn(100) < 50 {
+				vacc = auth.NewContinuousVestingAccount(&bacc, startTime, endTime)
+			} else {
+				vacc = auth.NewDelayedVestingAccount(&bacc, endTime)
+			}
+
+			var err error
+			gacc, err = genaccounts.NewGenesisAccountI(vacc)
+			if err != nil {
+				panic(err)
+			}
+		} else {
+			gacc = genaccounts.NewGenesisAccount(&bacc)
+		}
+
+		genesisAccounts = append(genesisAccounts, gacc)
+	}
+
+	genaccsGenesis := genaccounts.NewGenesisState(genesisAccounts)
+	genesisState[genaccounts.ModuleName] = cdc.MustMarshalJSON(genaccsGenesis)
+
+	authGenesis := auth.NewGenesisState(
+		nil,
+		auth.NewParams(
+			simulation.ModuleParamSimulator["MaxMemoCharacters"](r).(uint64),
+			simulation.ModuleParamSimulator["TxSigLimit"](r).(uint64),
+			simulation.ModuleParamSimulator["TxSizeCostPerByte"](r).(uint64),
+			simulation.ModuleParamSimulator["SigVerifyCostED25519"](r).(uint64),
+			simulation.ModuleParamSimulator["SigVerifyCostSecp256k1"](r).(uint64),
+		),
+	)
+	fmt.Printf("Selected randomly generated auth parameters:\n\t%+v\n", authGenesis)
+	genesisState[auth.ModuleName] = cdc.MustMarshalJSON(authGenesis)
+
+	bankGenesis := bank.NewGenesisState(r.Int63n(2) == 0)
+	genesisState[bank.ModuleName] = cdc.MustMarshalJSON(bankGenesis)
+	fmt.Printf("Selected randomly generated bank parameters:\n\t%+v\n", bankGenesis)
+
+	// Random genesis states
+	vp := simulation.ModuleParamSimulator["VotingParams/VotingPeriod"](r).(time.Duration)
+	govGenesis := gov.NewGenesisState(
+		uint64(r.Intn(100)),
+		gov.NewDepositParams(
+			simulation.ModuleParamSimulator["DepositParams/MinDeposit"](r).(sdk.Coins),
+			vp,
+		),
+		gov.NewVotingParams(vp),
+		gov.NewTallyParams(
+			simulation.ModuleParamSimulator["TallyParams/Quorum"](r).(sdk.Dec),
+			simulation.ModuleParamSimulator["TallyParams/Threshold"](r).(sdk.Dec),
+			simulation.ModuleParamSimulator["TallyParams/Veto"](r).(sdk.Dec),
+		),
+	)
+	genesisState[gov.ModuleName] = cdc.MustMarshalJSON(govGenesis)
+	fmt.Printf("Selected randomly generated governance parameters:\n\t%+v\n", govGenesis)
+
+	stakingGenesis := staking.NewGenesisState(
+		staking.InitialPool(),
+		staking.NewParams(
+			simulation.ModuleParamSimulator["UnbondingTime"](r).(time.Duration),
+			simulation.ModuleParamSimulator["MaxValidators"](r).(uint16),
+			7,
+			sdk.DefaultBondDenom,
+		),
+		nil,
+		nil,
+	)
+	fmt.Printf("Selected randomly generated staking parameters:\n\t%+v\n", stakingGenesis)
+
+	slashingParams := slashing.NewParams(
+		stakingGenesis.Params.UnbondingTime,
+		simulation.ModuleParamSimulator["SignedBlocksWindow"](r).(int64),
+		simulation.ModuleParamSimulator["MinSignedPerWindow"](r).(sdk.Dec),
+		simulation.ModuleParamSimulator["DowntimeJailDuration"](r).(time.Duration),
+		simulation.ModuleParamSimulator["SlashFractionDoubleSign"](r).(sdk.Dec),
+		simulation.ModuleParamSimulator["SlashFractionDowntime"](r).(sdk.Dec),
+	)
+	slashingGenesis := slashing.NewGenesisState(slashingParams, nil, nil)
+	genesisState[slashing.ModuleName] = cdc.MustMarshalJSON(slashingGenesis)
+	fmt.Printf("Selected randomly generated slashing parameters:\n\t%+v\n", slashingGenesis)
+
+	mintGenesis := mint.NewGenesisState(
+		mint.InitialMinter(
+			sdk.NewDecWithPrec(int64(r.Intn(99)), 2)),
+		mint.NewParams(
+			sdk.DefaultBondDenom,
+			simulation.ModuleParamSimulator["InflationRateChange"](r).(sdk.Dec),
+			simulation.ModuleParamSimulator["InflationMax"](r).(sdk.Dec),
+			simulation.ModuleParamSimulator["InflationMin"](r).(sdk.Dec),
+			simulation.ModuleParamSimulator["GoalBonded"](r).(sdk.Dec),
+			uint64(60*60*8766/5),
+		),
+	)
+	genesisState[mint.ModuleName] = cdc.MustMarshalJSON(mintGenesis)
+	fmt.Printf("Selected randomly generated minting parameters:\n\t%+v\n", mintGenesis)
+
+	var validators []staking.Validator
+	var delegations []staking.Delegation
+
+	valAddrs := make([]sdk.ValAddress, numInitiallyBonded)
+	for i := 0; i < int(numInitiallyBonded); i++ {
+		valAddr := sdk.ValAddress(accs[i].Address)
+		valAddrs[i] = valAddr
+
+		validator := staking.NewValidator(valAddr, accs[i].PubKey, staking.Description{})
+		validator.Tokens = sdk.NewInt(amount)
+		validator.DelegatorShares = sdk.NewDec(amount)
+		delegation := staking.Delegation{accs[i].Address, valAddr, sdk.NewDec(amount)}
+		validators = append(validators, validator)
+		delegations = append(delegations, delegation)
+	}
+
+	stakingGenesis.Pool.NotBondedTokens = sdk.NewInt((amount * numAccs) + (numInitiallyBonded * amount))
+	stakingGenesis.Validators = validators
+	stakingGenesis.Delegations = delegations
+	genesisState[staking.ModuleName] = cdc.MustMarshalJSON(stakingGenesis)
+
+	// TODO make use NewGenesisState
+	distrGenesis := distr.GenesisState{
+		FeePool:             distr.InitialFeePool(),
+		CommunityTax:        sdk.NewDecWithPrec(1, 2).Add(sdk.NewDecWithPrec(int64(r.Intn(30)), 2)),
+		BaseProposerReward:  sdk.NewDecWithPrec(1, 2).Add(sdk.NewDecWithPrec(int64(r.Intn(30)), 2)),
+		BonusProposerReward: sdk.NewDecWithPrec(1, 2).Add(sdk.NewDecWithPrec(int64(r.Intn(30)), 2)),
+	}
+	genesisState[distr.ModuleName] = cdc.MustMarshalJSON(distrGenesis)
+	fmt.Printf("Selected randomly generated distribution parameters:\n\t%+v\n", distrGenesis)
+
+	// Marshal genesis
+	appState, err := MakeCodec().MarshalJSON(genesisState)
+	if err != nil {
+		panic(err)
+	}
+
+	return appState, accs, "simulation"
+}
+
+func appStateFn(r *rand.Rand, accs []simulation.Account, genesisTimestamp time.Time,
+) (json.RawMessage, []simulation.Account, string) {
+
+	if genesisFile != "" {
+		return appStateFromGenesisFileFn(r, accs, genesisTimestamp)
+	}
+	return appStateRandomizedFn(r, accs, genesisTimestamp)
+}
+
+func testAndRunTxs(app *SimApp) []simulation.WeightedOperation {
+	return []simulation.WeightedOperation{
+		{5, authsim.SimulateDeductFee(app.accountKeeper, app.feeCollectionKeeper)},
+		{100, banksim.SimulateMsgSend(app.accountKeeper, app.bankKeeper)},
+		{10, banksim.SimulateSingleInputMsgMultiSend(app.accountKeeper, app.bankKeeper)},
+		{50, distrsim.SimulateMsgSetWithdrawAddress(app.accountKeeper, app.distrKeeper)},
+		{50, distrsim.SimulateMsgWithdrawDelegatorReward(app.accountKeeper, app.distrKeeper)},
+		{50, distrsim.SimulateMsgWithdrawValidatorCommission(app.accountKeeper, app.distrKeeper)},
+		{5, govsim.SimulateSubmittingVotingAndSlashingForProposal(app.govKeeper, govsim.SimulateTextProposalContent)},
+		{5, govsim.SimulateSubmittingVotingAndSlashingForProposal(app.govKeeper, paramsim.SimulateParamChangeProposalContent)},
+		{100, govsim.SimulateMsgDeposit(app.govKeeper)},
+		{100, stakingsim.SimulateMsgCreateValidator(app.accountKeeper, app.stakingKeeper)},
+		{5, stakingsim.SimulateMsgEditValidator(app.stakingKeeper)},
+		{100, stakingsim.SimulateMsgDelegate(app.accountKeeper, app.stakingKeeper)},
+		{100, stakingsim.SimulateMsgUndelegate(app.accountKeeper, app.stakingKeeper)},
+		{100, stakingsim.SimulateMsgBeginRedelegate(app.accountKeeper, app.stakingKeeper)},
+		{100, slashingsim.SimulateMsgUnjail(app.slashingKeeper)},
+	}
+}
+
+func invariants(app *SimApp) []sdk.Invariant {
+	return simulation.PeriodicInvariants(app.crisisKeeper.Invariants(), period, 0)
+}
+
+// Pass this in as an option to use a dbStoreAdapter instead of an IAVLStore for simulation speed.
+func fauxMerkleModeOpt(bapp *baseapp.BaseApp) {
+	bapp.SetFauxMerkleMode()
+}
+
+// Profile with:
+// /usr/local/go/bin/go test -benchmem -run=^$ github.com/cosmos/cosmos-sdk/simapp -bench ^BenchmarkFullAppSimulation$ -SimulationCommit=true -cpuprofile cpu.out
+func BenchmarkFullAppSimulation(b *testing.B) {
+	logger := log.NewNopLogger()
+
+	var db dbm.DB
+	dir, _ := ioutil.TempDir("", "goleveldb-app-sim")
+	db, _ = sdk.NewLevelDB("Simulation", dir)
+	defer func() {
+		db.Close()
+		os.RemoveAll(dir)
+	}()
+	app := NewSimApp(logger, db, nil, true, 0)
+
+	// Run randomized simulation
+	// TODO parameterize numbers, save for a later PR
+	_, err := simulation.SimulateFromSeed(getSimulateFromSeedInput(b, os.Stdout, app))
+	if err != nil {
+		fmt.Println(err)
+		b.Fail()
+	}
+	if commit {
+		fmt.Println("GoLevelDB Stats")
+		fmt.Println(db.Stats()["leveldb.stats"])
+		fmt.Println("GoLevelDB cached block size", db.Stats()["leveldb.cachedblock"])
+	}
+}
+
+func TestFullAppSimulation(t *testing.T) {
+	if !enabled {
+		t.Skip("Skipping application simulation")
+	}
+
+	var logger log.Logger
+
+	if verbose {
+		logger = log.TestingLogger()
+	} else {
+		logger = log.NewNopLogger()
+	}
+
+	var db dbm.DB
+	dir, _ := ioutil.TempDir("", "goleveldb-app-sim")
+	db, _ = sdk.NewLevelDB("Simulation", dir)
+
+	defer func() {
+		db.Close()
+		os.RemoveAll(dir)
+	}()
+
+	app := NewSimApp(logger, db, nil, true, 0, fauxMerkleModeOpt)
+	require.Equal(t, "SimApp", app.Name())
+
+	// Run randomized simulation
+	_, err := simulation.SimulateFromSeed(getSimulateFromSeedInput(t, os.Stdout, app))
+	if commit {
+		// for memdb:
+		// fmt.Println("Database Size", db.Stats()["database.size"])
+		fmt.Println("GoLevelDB Stats")
+		fmt.Println(db.Stats()["leveldb.stats"])
+		fmt.Println("GoLevelDB cached block size", db.Stats()["leveldb.cachedblock"])
+	}
+
+	require.Nil(t, err)
+}
+
+func TestAppImportExport(t *testing.T) {
+	if !enabled {
+		t.Skip("Skipping application import/export simulation")
+	}
+
+	var logger log.Logger
+	if verbose {
+		logger = log.TestingLogger()
+	} else {
+		logger = log.NewNopLogger()
+	}
+
+	var db dbm.DB
+	dir, _ := ioutil.TempDir("", "goleveldb-app-sim")
+	db, _ = sdk.NewLevelDB("Simulation", dir)
+
+	defer func() {
+		db.Close()
+		os.RemoveAll(dir)
+	}()
+
+	app := NewSimApp(logger, db, nil, true, 0, fauxMerkleModeOpt)
+	require.Equal(t, "SimApp", app.Name())
+
+	// Run randomized simulation
+	_, err := simulation.SimulateFromSeed(getSimulateFromSeedInput(t, os.Stdout, app))
+
+	if commit {
+		// for memdb:
+		// fmt.Println("Database Size", db.Stats()["database.size"])
+		fmt.Println("GoLevelDB Stats")
+		fmt.Println(db.Stats()["leveldb.stats"])
+		fmt.Println("GoLevelDB cached block size", db.Stats()["leveldb.cachedblock"])
+	}
+
+	require.Nil(t, err)
+	fmt.Printf("Exporting genesis...\n")
+
+	appState, _, err := app.ExportAppStateAndValidators(false, []string{})
+	require.NoError(t, err)
+	fmt.Printf("Importing genesis...\n")
+
+	newDir, _ := ioutil.TempDir("", "goleveldb-app-sim-2")
+	newDB, _ := sdk.NewLevelDB("Simulation-2", dir)
+
+	defer func() {
+		newDB.Close()
+		os.RemoveAll(newDir)
+	}()
+
+	newApp := NewSimApp(log.NewNopLogger(), newDB, nil, true, 0, fauxMerkleModeOpt)
+	require.Equal(t, "SimApp", newApp.Name())
+
+	var genesisState GenesisState
+	err = app.cdc.UnmarshalJSON(appState, &genesisState)
+	if err != nil {
+		panic(err)
+	}
+
+	ctxB := newApp.NewContext(true, abci.Header{})
+	newApp.mm.InitGenesis(ctxB, genesisState)
+
+	fmt.Printf("Comparing stores...\n")
+	ctxA := app.NewContext(true, abci.Header{})
+
+	type StoreKeysPrefixes struct {
+		A        sdk.StoreKey
+		B        sdk.StoreKey
+		Prefixes [][]byte
+	}
+
+	storeKeysPrefixes := []StoreKeysPrefixes{
+		{app.keyMain, newApp.keyMain, [][]byte{}},
+		{app.keyAccount, newApp.keyAccount, [][]byte{}},
+		{app.keyStaking, newApp.keyStaking, [][]byte{staking.UnbondingQueueKey,
+			staking.RedelegationQueueKey, staking.ValidatorQueueKey}}, // ordering may change but it doesn't matter
+		{app.keySlashing, newApp.keySlashing, [][]byte{}},
+		{app.keyMint, newApp.keyMint, [][]byte{}},
+		{app.keyDistr, newApp.keyDistr, [][]byte{}},
+		{app.keyFeeCollection, newApp.keyFeeCollection, [][]byte{}},
+		{app.keyParams, newApp.keyParams, [][]byte{}},
+		{app.keyGov, newApp.keyGov, [][]byte{}},
+	}
+
+	for _, storeKeysPrefix := range storeKeysPrefixes {
+		storeKeyA := storeKeysPrefix.A
+		storeKeyB := storeKeysPrefix.B
+		prefixes := storeKeysPrefix.Prefixes
+		storeA := ctxA.KVStore(storeKeyA)
+		storeB := ctxB.KVStore(storeKeyB)
+		kvA, kvB, count, equal := sdk.DiffKVStores(storeA, storeB, prefixes)
+		fmt.Printf("Compared %d key/value pairs between %s and %s\n", count, storeKeyA, storeKeyB)
+		require.True(t, equal,
+			"unequal stores: %s / %s:\nstore A %X => %X\nstore B %X => %X",
+			storeKeyA, storeKeyB, kvA.Key, kvA.Value, kvB.Key, kvB.Value,
+		)
+	}
+
+}
+
+func TestAppSimulationAfterImport(t *testing.T) {
+	if !enabled {
+		t.Skip("Skipping application simulation after import")
+	}
+
+	var logger log.Logger
+	if verbose {
+		logger = log.TestingLogger()
+	} else {
+		logger = log.NewNopLogger()
+	}
+
+	dir, _ := ioutil.TempDir("", "goleveldb-app-sim")
+	db, _ := sdk.NewLevelDB("Simulation", dir)
+
+	defer func() {
+		db.Close()
+		os.RemoveAll(dir)
+	}()
+
+	app := NewSimApp(logger, db, nil, true, 0, fauxMerkleModeOpt)
+	require.Equal(t, "SimApp", app.Name())
+
+	// Run randomized simulation
+	stopEarly, err := simulation.SimulateFromSeed(getSimulateFromSeedInput(t, os.Stdout, app))
+
+	if commit {
+		// for memdb:
+		// fmt.Println("Database Size", db.Stats()["database.size"])
+		fmt.Println("GoLevelDB Stats")
+		fmt.Println(db.Stats()["leveldb.stats"])
+		fmt.Println("GoLevelDB cached block size", db.Stats()["leveldb.cachedblock"])
+	}
+
+	require.Nil(t, err)
+
+	if stopEarly {
+		// we can't export or import a zero-validator genesis
+		fmt.Printf("We can't export or import a zero-validator genesis, exiting test...\n")
+		return
+	}
+
+	fmt.Printf("Exporting genesis...\n")
+
+	appState, _, err := app.ExportAppStateAndValidators(true, []string{})
+	if err != nil {
+		panic(err)
+	}
+
+	fmt.Printf("Importing genesis...\n")
+
+	newDir, _ := ioutil.TempDir("", "goleveldb-app-sim-2")
+	newDB, _ := sdk.NewLevelDB("Simulation-2", dir)
+
+	defer func() {
+		newDB.Close()
+		os.RemoveAll(newDir)
+	}()
+
+	newApp := NewSimApp(log.NewNopLogger(), newDB, nil, true, 0, fauxMerkleModeOpt)
+	require.Equal(t, "SimApp", newApp.Name())
+	newApp.InitChain(abci.RequestInitChain{
+		AppStateBytes: appState,
+	})
+
+	// Run randomized simulation on imported app
+	_, err = simulation.SimulateFromSeed(getSimulateFromSeedInput(t, os.Stdout, newApp))
+	require.Nil(t, err)
+}
+
+// TODO: Make another test for the fuzzer itself, which just has noOp txs
+// and doesn't depend on the application.
+func TestAppStateDeterminism(t *testing.T) {
+	if !enabled {
+		t.Skip("Skipping application simulation")
+	}
+
+	numSeeds := 3
+	numTimesToRunPerSeed := 5
+	appHashList := make([]json.RawMessage, numTimesToRunPerSeed)
+
+	for i := 0; i < numSeeds; i++ {
+		seed := rand.Int63()
+		for j := 0; j < numTimesToRunPerSeed; j++ {
+			logger := log.NewNopLogger()
+			db := dbm.NewMemDB()
+			app := NewSimApp(logger, db, nil, true, 0)
+
+			// Run randomized simulation
+			simulation.SimulateFromSeed(
+				t, os.Stdout, app.BaseApp, appStateFn, seed,
+				testAndRunTxs(app),
+				[]sdk.Invariant{},
+				50,
+				100,
+				true,
+				false,
+			)
+			appHash := app.LastCommitID().Hash
+			appHashList[j] = appHash
+		}
+		for k := 1; k < numTimesToRunPerSeed; k++ {
+			require.Equal(t, appHashList[0], appHashList[k], "appHash list: %v", appHashList)
+		}
+	}
+}
+
+func BenchmarkInvariants(b *testing.B) {
+	logger := log.NewNopLogger()
+	dir, _ := ioutil.TempDir("", "goleveldb-app-invariant-bench")
+	db, _ := sdk.NewLevelDB("simulation", dir)
+
+	defer func() {
+		db.Close()
+		os.RemoveAll(dir)
+	}()
+
+	app := NewSimApp(logger, db, nil, true, 0)
+
+	// 2. Run parameterized simulation (w/o invariants)
+	_, err := simulation.SimulateFromSeed(
+		b, ioutil.Discard, app.BaseApp, appStateFn, seed, testAndRunTxs(app),
+		[]sdk.Invariant{}, numBlocks, blockSize, commit, lean,
+	)
+	if err != nil {
+		fmt.Println(err)
+		b.FailNow()
+	}
+
+	ctx := app.NewContext(true, abci.Header{Height: app.LastBlockHeight() + 1})
+
+	// 3. Benchmark each invariant separately
+	//
+	// NOTE: We use the crisis keeper as it has all the invariants registered with
+	// their respective metadata which makes it useful for testing/benchmarking.
+	for _, cr := range app.crisisKeeper.Routes() {
+		b.Run(fmt.Sprintf("%s/%s", cr.ModuleName, cr.Route), func(b *testing.B) {
+			if err := cr.Invar(ctx); err != nil {
+				fmt.Println(err)
+				b.FailNow()
+			}
+		})
+	}
+}

simapp/test_util.go

@@ -0,0 +1,23 @@
+package simapp
+
+import (
+	"io"
+
+	"github.com/tendermint/tendermint/libs/log"
+
+	bam "github.com/cosmos/cosmos-sdk/baseapp"
+	sdk "github.com/cosmos/cosmos-sdk/types"
+	"github.com/cosmos/cosmos-sdk/x/staking"
+	dbm "github.com/tendermint/tendermint/libs/db"
+)
+
+// NewSimAppUNSAFE is used for debugging purposes only.
+//
+// NOTE: to not use this function with non-test code
+func NewSimAppUNSAFE(logger log.Logger, db dbm.DB, traceStore io.Writer, loadLatest bool,
+	invCheckPeriod uint, baseAppOptions ...func(*bam.BaseApp),
+) (gapp *SimApp, keyMain, keyStaking *sdk.KVStoreKey, stakingKeeper staking.Keeper) {
+
+	gapp = NewSimApp(logger, db, traceStore, loadLatest, invCheckPeriod, baseAppOptions...)
+	return gapp, gapp.keyMain, gapp.keyStaking, gapp.stakingKeeper
+}