mirror of https://github.com/certusone/wasmd.git
192 lines
5.8 KiB
Go
192 lines
5.8 KiB
Go
package simulation
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import (
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"io/ioutil"
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"math/rand"
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"github.com/cosmos/cosmos-sdk/baseapp"
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simappparams "github.com/cosmos/cosmos-sdk/simapp/params"
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sdk "github.com/cosmos/cosmos-sdk/types"
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"github.com/cosmos/cosmos-sdk/types/module"
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simtypes "github.com/cosmos/cosmos-sdk/types/simulation"
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"github.com/cosmos/cosmos-sdk/x/simulation"
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"github.com/CosmWasm/wasmd/app/params"
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"github.com/CosmWasm/wasmd/x/wasm/types"
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)
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// Simulation operation weights constants
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//nolint:gosec
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const (
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OpWeightMsgStoreCode = "op_weight_msg_store_code"
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OpWeightMsgInstantiateContract = "op_weight_msg_instantiate_contract"
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OpReflectContractPath = "op_reflect_contract_path"
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)
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// WasmKeeper is a subset of the wasm keeper used by simulations
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type WasmKeeper interface {
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GetParams(ctx sdk.Context) types.Params
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IterateCodeInfos(ctx sdk.Context, cb func(uint64, types.CodeInfo) bool)
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}
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type BankKeeper interface {
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simulation.BankKeeper
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IsSendEnabledCoin(ctx sdk.Context, coin sdk.Coin) bool
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}
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// WeightedOperations returns all the operations from the module with their respective weights
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func WeightedOperations(
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simstate *module.SimulationState,
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ak types.AccountKeeper,
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bk BankKeeper,
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wasmKeeper WasmKeeper,
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) simulation.WeightedOperations {
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var (
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weightMsgStoreCode int
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weightMsgInstantiateContract int
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wasmContractPath string
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)
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simstate.AppParams.GetOrGenerate(simstate.Cdc, OpWeightMsgStoreCode, &weightMsgStoreCode, nil,
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func(_ *rand.Rand) {
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weightMsgStoreCode = params.DefaultWeightMsgStoreCode
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},
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)
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simstate.AppParams.GetOrGenerate(simstate.Cdc, OpWeightMsgInstantiateContract, &weightMsgInstantiateContract, nil,
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func(_ *rand.Rand) {
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weightMsgInstantiateContract = params.DefaultWeightMsgInstantiateContract
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},
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)
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simstate.AppParams.GetOrGenerate(simstate.Cdc, OpReflectContractPath, &wasmContractPath, nil,
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func(_ *rand.Rand) {
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// simulations are run from the `app` folder
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wasmContractPath = "../x/wasm/keeper/testdata/reflect.wasm"
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},
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)
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wasmBz, err := ioutil.ReadFile(wasmContractPath)
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if err != nil {
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panic(err)
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}
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return simulation.WeightedOperations{
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simulation.NewWeightedOperation(
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weightMsgStoreCode,
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SimulateMsgStoreCode(ak, bk, wasmKeeper, wasmBz, 5_000_000),
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),
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simulation.NewWeightedOperation(
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weightMsgInstantiateContract,
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SimulateMsgInstantiateContract(ak, bk, wasmKeeper, DefaultSimulationCodeIDSelector),
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),
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}
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}
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// SimulateMsgStoreCode generates a MsgStoreCode with random values
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func SimulateMsgStoreCode(ak types.AccountKeeper, bk simulation.BankKeeper, wasmKeeper WasmKeeper, wasmBz []byte, gas uint64) simtypes.Operation {
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return func(
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r *rand.Rand,
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app *baseapp.BaseApp,
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ctx sdk.Context,
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accs []simtypes.Account,
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chainID string,
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) (simtypes.OperationMsg, []simtypes.FutureOperation, error) {
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if wasmKeeper.GetParams(ctx).CodeUploadAccess.Permission != types.AccessTypeEverybody {
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return simtypes.NoOpMsg(types.ModuleName, types.MsgStoreCode{}.Type(), "no chain permission"), nil, nil
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}
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simAccount, _ := simtypes.RandomAcc(r, accs)
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permission := wasmKeeper.GetParams(ctx).InstantiateDefaultPermission
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config := permission.With(simAccount.Address)
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msg := types.MsgStoreCode{
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Sender: simAccount.Address.String(),
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WASMByteCode: wasmBz,
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InstantiatePermission: &config,
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}
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txCtx := simulation.OperationInput{
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R: r,
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App: app,
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TxGen: simappparams.MakeTestEncodingConfig().TxConfig,
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Cdc: nil,
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Msg: &msg,
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MsgType: msg.Type(),
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Context: ctx,
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SimAccount: simAccount,
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AccountKeeper: ak,
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Bankkeeper: bk,
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ModuleName: types.ModuleName,
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}
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return GenAndDeliverTxWithRandFees(txCtx, gas)
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}
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}
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// CodeIDSelector returns code id to be used in simulations
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type CodeIDSelector = func(ctx sdk.Context, wasmKeeper WasmKeeper) uint64
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// DefaultSimulationCodeIDSelector picks the first code id
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func DefaultSimulationCodeIDSelector(ctx sdk.Context, wasmKeeper WasmKeeper) uint64 {
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var codeID uint64
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wasmKeeper.IterateCodeInfos(ctx, func(u uint64, info types.CodeInfo) bool {
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if info.InstantiateConfig.Permission != types.AccessTypeEverybody {
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return false
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}
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codeID = u
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return true
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})
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return codeID
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}
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// SimulateMsgInstantiateContract generates a MsgInstantiateContract with random values
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func SimulateMsgInstantiateContract(ak types.AccountKeeper, bk BankKeeper, wasmKeeper WasmKeeper, codeSelector CodeIDSelector) simtypes.Operation {
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return func(
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r *rand.Rand,
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app *baseapp.BaseApp,
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ctx sdk.Context,
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accs []simtypes.Account,
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chainID string,
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) (simtypes.OperationMsg, []simtypes.FutureOperation, error) {
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simAccount, _ := simtypes.RandomAcc(r, accs)
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codeID := codeSelector(ctx, wasmKeeper)
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if codeID == 0 {
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return simtypes.NoOpMsg(types.ModuleName, types.MsgInstantiateContract{}.Type(), "no codes with permission available"), nil, nil
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}
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deposit := sdk.Coins{}
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spendableCoins := bk.SpendableCoins(ctx, simAccount.Address)
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for _, v := range spendableCoins {
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if bk.IsSendEnabledCoin(ctx, v) {
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deposit = deposit.Add(simtypes.RandSubsetCoins(r, sdk.NewCoins(v))...)
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}
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}
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msg := types.MsgInstantiateContract{
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Sender: simAccount.Address.String(),
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Admin: simtypes.RandomAccounts(r, 1)[0].Address.String(),
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CodeID: codeID,
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Label: simtypes.RandStringOfLength(r, 10),
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Msg: []byte(`{}`),
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Funds: deposit,
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}
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txCtx := simulation.OperationInput{
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R: r,
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App: app,
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TxGen: simappparams.MakeTestEncodingConfig().TxConfig,
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Cdc: nil,
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Msg: &msg,
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MsgType: msg.Type(),
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Context: ctx,
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SimAccount: simAccount,
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AccountKeeper: ak,
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Bankkeeper: bk,
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ModuleName: types.ModuleName,
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CoinsSpentInMsg: deposit,
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}
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return simulation.GenAndDeliverTxWithRandFees(txCtx)
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}
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}
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