app.go

package simapp

import (
	bam "github.com/cosmos/cosmos-sdk/baseapp"
	"github.com/cosmos/cosmos-sdk/codec"
	"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/auth/ante"
	authvesting "github.com/cosmos/cosmos-sdk/x/auth/vesting"
	"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/evidence"
	"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"
	paramsclient "github.com/cosmos/cosmos-sdk/x/params/client"
	"github.com/cosmos/cosmos-sdk/x/slashing"
	"github.com/cosmos/cosmos-sdk/x/staking"
	"github.com/cosmos/cosmos-sdk/x/supply"
	"github.com/ixoworld/bonds/x/bonds"
	abci "github.com/tendermint/tendermint/abci/types"
	"github.com/tendermint/tendermint/libs/log"
	tmos "github.com/tendermint/tendermint/libs/os"
	dbm "github.com/tendermint/tm-db"
	"io"
	"os"

	"github.com/cosmos/cosmos-sdk/x/upgrade"
	upgradeclient "github.com/cosmos/cosmos-sdk/x/upgrade/client"
)

const appName = "Bonds"

var (
	// DefaultCLIHome represents the default home directory for the application CLI
	DefaultCLIHome = os.ExpandEnv("$HOME/.bondscli")

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

	// ModuleBasics is in charge of setting up basic module elements
	ModuleBasics = module.NewBasicManager(
		auth.AppModuleBasic{},
		genutil.AppModuleBasic{},
		bank.AppModuleBasic{},
		staking.AppModuleBasic{},
		mint.AppModuleBasic{},
		distr.AppModuleBasic{},
		gov.NewAppModuleBasic(
			paramsclient.ProposalHandler, distr.ProposalHandler, upgradeclient.ProposalHandler,
		),
		params.AppModuleBasic{},
		crisis.AppModuleBasic{},
		slashing.AppModuleBasic{},
		upgrade.AppModuleBasic{},
		supply.AppModuleBasic{},
		evidence.AppModuleBasic{},

		bonds.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:            {supply.Burner},

		bonds.BondsMintBurnAccount:       {supply.Minter, supply.Burner},
		bonds.BatchesIntermediaryAccount: nil,
		bonds.BondsReserveAccount:        nil,
	}

	// module accounts that are allowed to receive tokens
	allowedReceivingModAcc = map[string]bool{
		distr.ModuleName: true,
	}
)

// MakeCodec constructs the *std.Codec and *codec.Codec instances used by
// SimApp.
func MakeCodec() *codec.Codec {
	var cdc = codec.New()

	ModuleBasics.RegisterCodec(cdc)
	sdk.RegisterCodec(cdc)
	codec.RegisterCrypto(cdc)
	codec.RegisterEvidences(cdc)
	authvesting.RegisterCodec(cdc)

	return cdc.Seal()
}

// Verify app interface at compile time
var _ simapp.App = (*SimApp)(nil)

// Extended ABCI application
type SimApp struct {
	*bam.BaseApp
	cdc *codec.Codec

	invCheckPeriod uint

	// sdk 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

	BondsKeeper bonds.Keeper

	// Module Manager
	mm *module.Manager

	// the module manager
	sm *module.SimulationManager
}

// NewSimApp returns a reference to an initialized SimApp.
func NewSimApp(
	logger log.Logger, db dbm.DB, traceStore io.Writer, loadLatest bool,
	skipUpgradeHeights map[int64]bool, invCheckPeriod uint, baseAppOptions ...func(*bam.BaseApp),
) *SimApp {
	cdc := MakeCodec()

	// BaseApp handles interactions with Tendermint through the ABCI protocol
	bApp := bam.NewBaseApp(appName, logger, db, auth.DefaultTxDecoder(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, upgrade.StoreKey, params.StoreKey, evidence.StoreKey,

		bonds.StoreKey,
	)
	tkeys := sdk.NewTransientStoreKeys(params.TStoreKey)

	app := &SimApp{
		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(app.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).WithKeyTable(gov.ParamKeyTable())
	app.subspaces[evidence.ModuleName] = app.paramsKeeper.Subspace(evidence.DefaultParamspace)
	app.subspaces[crisis.ModuleName] = app.paramsKeeper.Subspace(crisis.DefaultParamspace)
	app.subspaces[bonds.ModuleName] = app.paramsKeeper.Subspace(bonds.DefaultParamspace)

	// Add keepers
	app.AccountKeeper = auth.NewAccountKeeper(
		app.cdc, keys[auth.StoreKey], app.subspaces[auth.ModuleName], auth.ProtoBaseAccount,
	)
	app.BankKeeper = bank.NewBaseKeeper(
		app.AccountKeeper, app.subspaces[bank.ModuleName], app.BlacklistedAccAddrs(),
	)
	app.SupplyKeeper = supply.NewKeeper(
		app.cdc, keys[supply.StoreKey], app.AccountKeeper, app.BankKeeper, maccPerms,
	)
	stakingKeeper := staking.NewKeeper(
		app.cdc, keys[staking.StoreKey], app.SupplyKeeper, app.subspaces[staking.ModuleName],
	)
	app.mintKeeper = mint.NewKeeper(
		app.cdc, keys[mint.StoreKey], app.subspaces[mint.ModuleName], &stakingKeeper, app.SupplyKeeper, auth.FeeCollectorName,
	)
	app.distrKeeper = distr.NewKeeper(
		app.cdc, keys[distr.StoreKey], app.subspaces[distr.ModuleName], &stakingKeeper, app.SupplyKeeper, auth.FeeCollectorName, app.ModuleAccountAddrs(),
	)
	app.slashingKeeper = slashing.NewKeeper(
		app.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,
	)
	evidenceKeeper := evidence.NewKeeper(
		app.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
	govRouter := gov.NewRouter()
	govRouter.AddRoute(gov.RouterKey, gov.ProposalHandler).
		AddRoute(params.RouterKey, params.NewParamChangeProposalHandler(app.paramsKeeper)).
		AddRoute(distr.RouterKey, distr.NewCommunityPoolSpendProposalHandler(app.distrKeeper)).
		AddRoute(upgrade.RouterKey, upgrade.NewSoftwareUpgradeProposalHandler(app.upgradeKeeper))
	app.govKeeper = gov.NewKeeper(
		app.cdc, keys[gov.StoreKey], app.subspaces[gov.ModuleName], app.SupplyKeeper, &stakingKeeper, 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.BondsKeeper = bonds.NewKeeper(
		app.BankKeeper,
		app.SupplyKeeper,
		app.AccountKeeper,
		app.StakingKeeper,
		keys[bonds.StoreKey],
		app.subspaces[bonds.ModuleName],
		app.cdc,
	)

	// 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.AccountKeeper, app.SupplyKeeper),
		mint.NewAppModule(app.mintKeeper),
		slashing.NewAppModule(app.slashingKeeper, app.AccountKeeper, app.StakingKeeper),
		distr.NewAppModule(app.distrKeeper, app.AccountKeeper, app.SupplyKeeper, app.StakingKeeper),
		staking.NewAppModule(app.StakingKeeper, app.AccountKeeper, app.SupplyKeeper),
		upgrade.NewAppModule(app.upgradeKeeper),
		evidence.NewAppModule(app.evidenceKeeper),
		bonds.NewAppModule(app.BondsKeeper, 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(
		upgrade.ModuleName, mint.ModuleName, distr.ModuleName, slashing.ModuleName,
		evidence.ModuleName, staking.ModuleName,
		bonds.ModuleName,
	)
	app.mm.SetOrderEndBlockers(crisis.ModuleName, gov.ModuleName, staking.ModuleName, bonds.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, evidence.ModuleName, mint.ModuleName,
		bonds.ModuleName,
		supply.ModuleName, crisis.ModuleName, genutil.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),
		bonds.NewAppModule(app.BondsKeeper, app.AccountKeeper),
		supply.NewAppModule(app.SupplyKeeper, app.AccountKeeper),
		gov.NewAppModule(app.govKeeper, app.AccountKeeper, app.SupplyKeeper),
		distr.NewAppModule(app.distrKeeper, app.AccountKeeper, app.SupplyKeeper, app.StakingKeeper),
		staking.NewAppModule(app.StakingKeeper, app.AccountKeeper, app.SupplyKeeper),
		slashing.NewAppModule(app.slashingKeeper, app.AccountKeeper, app.StakingKeeper),
	)

	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.SupplyKeeper, auth.DefaultSigVerificationGasConsumer,
	))
	app.SetEndBlocker(app.EndBlocker)

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

	return app
}

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

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

// EndBlocker application updates every end block
func (app *SimApp) EndBlocker(ctx sdk.Context, req abci.RequestEndBlock) abci.ResponseEndBlock {
	return app.mm.EndBlock(ctx, req)
}

// InitChainer 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)
}

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

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

	return modAccAddrs
}

// BlacklistedAccAddrs returns all the app's module account addresses black listed for receiving tokens.
func (app *SimApp) BlacklistedAccAddrs() map[string]bool {
	blacklistedAddrs := make(map[string]bool)
	for acc := range maccPerms {
		blacklistedAddrs[supply.NewModuleAddress(acc).String()] = !allowedReceivingModAcc[acc]
	}

	return blacklistedAddrs
}

// Codec returns the application's sealed codec.
func (app *SimApp) Codec() *codec.Codec {
	return app.cdc
}

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