simapp

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 Go to latest Published: Jul 11, 2024 License: MIT Imports: 120 Imported by: 0

README

simapp

simapp is an application built using the Cosmos SDK for testing and educational purposes.

Running testnets with simd

If you want to spin up a quick testnet with your friends, you can follow these steps. Unless otherwise noted, every step must be done by everyone who wants to participate in this testnet.

  1. $ make build. This will build the simd binary and install it in your Cosmos SDK repo, inside a new build directory. The following instructions are run from inside that directory.

  2. If you've run simd before, you may need to reset your database before starting a new testnet: $ ./simd unsafe-reset-all

  3. $ ./simd init [moniker]. This will initialize a new working directory, by default at ~/.simapp. You need a provide a "moniker," but it doesn't matter what it is.

  4. $ ./simd keys add [key_name]. This will create a new key, with a name of your choosing. Save the output of this command somewhere; you'll need the address generated here later.

  5. $ ./simd add-genesis-account $(simd keys show [key_name] -a) [amount], where key_name is the same key name as before; and amount is something like 10000000000000000000000000stake.

  6. $ ./simd gentx [key_name] [amount] --chain-id [chain-id]. This will create the genesis transaction for your new chain.

  7. Now, one person needs to create the genesis file genesis.json using the genesis transactions from every participant, by gathering all the genesis transactions under config/gentx and then calling ./simd collect-gentxs. This will create a new genesis.json file that includes data from all the validators (we sometimes call it the "super genesis file" to distinguish it from single-validator genesis files).

  8. Once you've received the super genesis file, overwrite your original genesis.json file with the new super genesis.json.

  9. Modify your config/config.toml (in the simapp working directory) to include the other participants as persistent peers:

    # Comma separated list of nodes to keep persistent connections to
persistent_peers = "[validator address]@[ip address]:[port],[validator address]@[ip address]:[port]"

    You can find validator address by running ./simd tendermint show-node-id. (It will be hex-encoded.) By default, port is 26656.

  10. Now you can start your nodes: $ ./simd start.

Now you have a small testnet that you can use to try out changes to the Cosmos SDK or Tendermint!

NOTE: Sometimes creating the network through the collect-gentxs will fail, and validators will start in a funny state (and then panic). If this happens, you can try to create and start the network first with a single validator and then add additional validators using a create-validator transaction.

Documentation

Index

Constants

View Source 
const (
	MockFeePort string = ibcmock.ModuleName + ibcfeetypes.ModuleName
)

IBC application testing ports

Variables

View Source 
var (
	// DefaultNodeHome default home directories for the application daemon
	DefaultNodeHome string
)

Functions

func BlockedAddresses 

func BlockedAddresses() map[string]bool

BlockedAddresses returns all the app's blocked account addresses.

func GetMaccPerms 

func GetMaccPerms() map[string][]string

GetMaccPerms returns a copy of the module account permissions

NOTE: This is solely to be used for testing purposes.

func NewAnteHandler 

func NewAnteHandler(options HandlerOptions) (sdk.AnteHandler, error)

NewAnteHandler returns an AnteHandler that checks and increments sequence numbers, checks signatures & account numbers, and deducts fees from the first signer.

func SignAndDeliver 

func SignAndDeliver(
	tb testing.TB, txCfg client.TxConfig, app *bam.BaseApp, msgs []sdk.Msg,
	chainID string, accNums, accSeqs []uint64, expPass bool, blockTime time.Time, nextValHash []byte, priv ...cryptotypes.PrivKey,
) (*abci.ResponseFinalizeBlock, error)

SignAndDeliver signs and delivers a transaction. No simulation occurs as the ibc testing package causes checkState and deliverState to diverge in block time.

CONTRACT: BeginBlock must be called before this function.

Types

type GenesisState 

type GenesisState map[string]json.RawMessage

GenesisState 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 HandlerOptions 

type HandlerOptions struct {
	ante.HandlerOptions
	IBCKeeper *keeper.Keeper
}

HandlerOptions are the options required for constructing a default SDK AnteHandler.

type SetupOptions 

type SetupOptions struct {
	Logger  log.Logger
	DB      *dbm.MemDB
	AppOpts servertypes.AppOptions
}

SetupOptions defines arguments that are passed into `Simapp` constructor.

type SimApp 

type SimApp struct {
	*baseapp.BaseApp

	// keepers
	AccountKeeper         authkeeper.AccountKeeper
	BankKeeper            bankkeeper.Keeper
	CapabilityKeeper      *capabilitykeeper.Keeper
	StakingKeeper         *stakingkeeper.Keeper
	SlashingKeeper        slashingkeeper.Keeper
	MintKeeper            mintkeeper.Keeper
	DistrKeeper           distrkeeper.Keeper
	GovKeeper             govkeeper.Keeper
	UpgradeKeeper         *upgradekeeper.Keeper
	ParamsKeeper          paramskeeper.Keeper
	AuthzKeeper           authzkeeper.Keeper
	IBCKeeper             *ibckeeper.Keeper // IBC Keeper must be a pointer in the app, so we can SetRouter on it correctly
	IBCFeeKeeper          ibcfeekeeper.Keeper
	ICAControllerKeeper   icacontrollerkeeper.Keeper
	ICAHostKeeper         icahostkeeper.Keeper
	TransferKeeper        ibctransferkeeper.Keeper
	ConsensusParamsKeeper consensusparamkeeper.Keeper

	// make scoped keepers public for test purposes
	ScopedIBCKeeper           capabilitykeeper.ScopedKeeper
	ScopedTransferKeeper      capabilitykeeper.ScopedKeeper
	ScopedFeeMockKeeper       capabilitykeeper.ScopedKeeper
	ScopedICAControllerKeeper capabilitykeeper.ScopedKeeper
	ScopedICAHostKeeper       capabilitykeeper.ScopedKeeper
	ScopedIBCMockKeeper       capabilitykeeper.ScopedKeeper
	ScopedICAMockKeeper       capabilitykeeper.ScopedKeeper

	// make IBC modules public for test purposes
	// these modules are never directly routed to by the IBC Router
	IBCMockModule ibcmock.IBCModule
	ICAAuthModule ibcmock.IBCModule
	FeeMockModule ibcmock.IBCModule

	// the module manager
	ModuleManager      *module.Manager
	BasicModuleManager module.BasicManager
	// contains filtered or unexported fields
}

SimApp extends an ABCI application, but with most of its parameters exported. They are exported for convenience in creating helper functions, as object capabilities aren't needed for testing.

func NewSimApp 

func NewSimApp(
	logger log.Logger,
	db dbm.DB,
	traceStore io.Writer,
	loadLatest bool,
	appOpts servertypes.AppOptions,
	baseAppOptions ...func(*baseapp.BaseApp),
) *SimApp

NewSimApp returns a reference to an initialized SimApp.

func Setup 

func Setup(t *testing.T, isCheckTx bool) *SimApp

Setup initializes a new SimApp. A Nop logger is set in SimApp.

func SetupWithGenesisValSet 

func SetupWithGenesisValSet(t *testing.T, valSet *cmttypes.ValidatorSet, genAccs []authtypes.GenesisAccount, balances ...banktypes.Balance) *SimApp

SetupWithGenesisValSet initializes a new SimApp with a validator set and genesis accounts that also act as delegators. For simplicity, each validator is bonded with a delegation of one consensus engine unit in the default token of the simapp from first genesis account. A Nop logger is set in SimApp.

func (*SimApp) AppCodec 

func (app *SimApp) AppCodec() codec.Codec

AppCodec returns SimApp's app 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 (*SimApp) AutoCliOpts 

func (app *SimApp) AutoCliOpts() autocli.AppOptions

AutoCliOpts returns the autocli options for the app.

func (*SimApp) BeginBlocker 

func (app *SimApp) BeginBlocker(ctx sdk.Context) (sdk.BeginBlock, error)

BeginBlocker application updates every begin block

func (*SimApp) Configurator 

func (app *SimApp) Configurator() module.Configurator

Configurator returns the configurator for the app

func (*SimApp) DefaultGenesis 

func (app *SimApp) DefaultGenesis() map[string]json.RawMessage

DefaultGenesis returns a default genesis from the registered AppModuleBasic's.

func (*SimApp) EndBlocker 

func (app *SimApp) EndBlocker(ctx sdk.Context) (sdk.EndBlock, error)

EndBlocker application updates every end block

func (*SimApp) GetBaseApp 

func (app *SimApp) GetBaseApp() *baseapp.BaseApp

GetBaseApp implements the TestingApp interface.

func (*SimApp) GetIBCKeeper 

func (app *SimApp) GetIBCKeeper() *ibckeeper.Keeper

GetIBCKeeper implements the TestingApp interface.

func (*SimApp) GetKey 

func (app *SimApp) GetKey(storeKey string) *storetypes.KVStoreKey

GetKey returns the KVStoreKey for the provided store key.

NOTE: This is solely to be used for testing purposes.

func (*SimApp) GetMemKey 

func (app *SimApp) GetMemKey(storeKey string) *storetypes.MemoryStoreKey

GetMemKey returns the MemStoreKey for the provided mem key.

NOTE: This is solely used for testing purposes.

func (*SimApp) GetScopedIBCKeeper 

func (app *SimApp) GetScopedIBCKeeper() capabilitykeeper.ScopedKeeper

GetScopedIBCKeeper implements the TestingApp interface.

func (*SimApp) GetStakingKeeper 

func (app *SimApp) GetStakingKeeper() ibctestingtypes.StakingKeeper

GetStakingKeeper implements the TestingApp interface.

func (*SimApp) GetStoreKeys 

func (app *SimApp) GetStoreKeys() []storetypes.StoreKey

GetStoreKeys returns all the stored store keys.

func (*SimApp) GetSubspace 

func (app *SimApp) GetSubspace(moduleName string) paramstypes.Subspace

GetSubspace returns a param subspace for a given module name.

NOTE: This is solely to be used for testing purposes.

func (*SimApp) GetTxConfig 

func (app *SimApp) GetTxConfig() client.TxConfig

GetTxConfig implements the TestingApp interface.

func (*SimApp) InitChainer 

func (app *SimApp) InitChainer(ctx sdk.Context, req *abci.RequestInitChain) (*abci.ResponseInitChain, error)

InitChainer application update at chain initialization

func (*SimApp) InterfaceRegistry 

func (app *SimApp) InterfaceRegistry() types.InterfaceRegistry

InterfaceRegistry returns SimApp's InterfaceRegistry

func (*SimApp) LegacyAmino 

func (app *SimApp) LegacyAmino() *codec.LegacyAmino

LegacyAmino returns SimApp's amino 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 (*SimApp) LoadHeight 

func (app *SimApp) LoadHeight(height int64) error

LoadHeight loads a particular height

func (*SimApp) Name 

func (app *SimApp) Name() string

Name returns the name of the App

func (*SimApp) PreBlocker 

func (app *SimApp) PreBlocker(ctx sdk.Context, _ *abci.RequestFinalizeBlock) (*sdk.ResponsePreBlock, error)

PreBlocker application updates every pre block

func (*SimApp) RegisterAPIRoutes 

func (app *SimApp) RegisterAPIRoutes(apiSvr *api.Server, apiConfig config.APIConfig)

RegisterAPIRoutes registers all application module routes with the provided API server.

func (*SimApp) RegisterNodeService 

func (app *SimApp) RegisterNodeService(clientCtx client.Context, cfg config.Config)

func (*SimApp) RegisterTendermintService 

func (app *SimApp) RegisterTendermintService(clientCtx client.Context)

RegisterTendermintService implements the Application.RegisterTendermintService method.

func (*SimApp) RegisterTxService 

func (app *SimApp) RegisterTxService(clientCtx client.Context)

RegisterTxService implements the Application.RegisterTxService method.

func (*SimApp) SimulationManager 

func (app *SimApp) SimulationManager() *module.SimulationManager

SimulationManager implements the SimulationApp interface

func (*SimApp) TxConfig 

func (app *SimApp) TxConfig() client.TxConfig

TxConfig returns SimApp's TxConfig

Source Files

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