/
operations.go
296 lines (242 loc) · 8.03 KB
/
operations.go
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package simulation
import (
"math/rand"
"github.com/FiboChain/fbc/libs/tendermint/crypto"
"github.com/FiboChain/fbc/libs/cosmos-sdk/baseapp"
"github.com/FiboChain/fbc/libs/cosmos-sdk/codec"
"github.com/FiboChain/fbc/libs/cosmos-sdk/simapp/helpers"
simappparams "github.com/FiboChain/fbc/libs/cosmos-sdk/simapp/params"
sdk "github.com/FiboChain/fbc/libs/cosmos-sdk/types"
"github.com/FiboChain/fbc/libs/cosmos-sdk/x/bank/internal/keeper"
"github.com/FiboChain/fbc/libs/cosmos-sdk/x/bank/internal/types"
"github.com/FiboChain/fbc/libs/cosmos-sdk/x/simulation"
)
// Simulation operation weights constants
const (
OpWeightMsgSend = "op_weight_msg_send"
OpWeightMsgMultiSend = "op_weight_msg_multisend"
)
// WeightedOperations returns all the operations from the module with their respective weights
func WeightedOperations(appParams simulation.AppParams, cdc *codec.Codec, ak types.AccountKeeper,
bk keeper.Keeper) simulation.WeightedOperations {
var weightMsgSend, weightMsgMultiSend int
appParams.GetOrGenerate(cdc, OpWeightMsgSend, &weightMsgSend, nil,
func(_ *rand.Rand) {
weightMsgSend = simappparams.DefaultWeightMsgSend
},
)
appParams.GetOrGenerate(cdc, OpWeightMsgMultiSend, &weightMsgMultiSend, nil,
func(_ *rand.Rand) {
weightMsgMultiSend = simappparams.DefaultWeightMsgMultiSend
},
)
return simulation.WeightedOperations{
simulation.NewWeightedOperation(
weightMsgSend,
SimulateMsgSend(ak, bk),
),
simulation.NewWeightedOperation(
weightMsgMultiSend,
SimulateMsgMultiSend(ak, bk),
),
}
}
// SimulateMsgSend tests and runs a single msg send where both
// accounts already exist.
// nolint: funlen
func SimulateMsgSend(ak types.AccountKeeper, bk keeper.Keeper) simulation.Operation {
return func(
r *rand.Rand, app *baseapp.BaseApp, ctx sdk.Context,
accs []simulation.Account, chainID string,
) (simulation.OperationMsg, []simulation.FutureOperation, error) {
if !bk.GetSendEnabled(ctx) {
return simulation.NoOpMsg(types.ModuleName), nil, nil
}
simAccount, toSimAcc, coins, skip, err := randomSendFields(r, ctx, accs, ak)
if err != nil {
return simulation.NoOpMsg(types.ModuleName), nil, err
}
if skip {
return simulation.NoOpMsg(types.ModuleName), nil, nil
}
msg := types.NewMsgSend(simAccount.Address, toSimAcc.Address, coins)
err = sendMsgSend(r, app, ak, msg, ctx, chainID, []crypto.PrivKey{simAccount.PrivKey})
if err != nil {
return simulation.NoOpMsg(types.ModuleName), nil, err
}
return simulation.NewOperationMsg(msg, true, ""), nil, nil
}
}
// sendMsgSend sends a transaction with a MsgSend from a provided random account.
func sendMsgSend(
r *rand.Rand, app *baseapp.BaseApp, ak types.AccountKeeper, // nolint:interfacer
msg types.MsgSend, ctx sdk.Context, chainID string, privkeys []crypto.PrivKey,
) error {
account := ak.GetAccount(ctx, msg.FromAddress)
coins := account.SpendableCoins(ctx.BlockTime())
var (
fees sdk.Coins
err error
)
coins, hasNeg := coins.SafeSub(msg.Amount)
if !hasNeg {
fees, err = simulation.RandomFees(r, ctx, coins)
if err != nil {
return err
}
}
tx := helpers.GenTx(
[]sdk.Msg{msg},
fees,
helpers.DefaultGenTxGas,
chainID,
[]uint64{account.GetAccountNumber()},
[]uint64{account.GetSequence()},
privkeys...,
)
_, _, err = app.Deliver(tx)
if err != nil {
return err
}
return nil
}
// SimulateMsgMultiSend tests and runs a single msg multisend, with randomized, capped number of inputs/outputs.
// all accounts in msg fields exist in state
// nolint: funlen
func SimulateMsgMultiSend(ak types.AccountKeeper, bk keeper.Keeper) simulation.Operation {
return func(
r *rand.Rand, app *baseapp.BaseApp, ctx sdk.Context,
accs []simulation.Account, chainID string,
) (simulation.OperationMsg, []simulation.FutureOperation, error) {
if !bk.GetSendEnabled(ctx) {
return simulation.NoOpMsg(types.ModuleName), nil, nil
}
// random number of inputs/outputs between [1, 3]
inputs := make([]types.Input, r.Intn(3)+1)
outputs := make([]types.Output, r.Intn(3)+1)
// collect signer privKeys
privs := make([]crypto.PrivKey, len(inputs))
// use map to check if address already exists as input
usedAddrs := make(map[string]bool)
var totalSentCoins sdk.Coins
for i := range inputs {
// generate random input fields, ignore to address
simAccount, _, coins, skip, err := randomSendFields(r, ctx, accs, ak)
// make sure account is fresh and not used in previous input
for usedAddrs[simAccount.Address.String()] {
simAccount, _, coins, skip, err = randomSendFields(r, ctx, accs, ak)
}
if err != nil {
return simulation.NoOpMsg(types.ModuleName), nil, err
}
if skip {
return simulation.NoOpMsg(types.ModuleName), nil, nil
}
// set input address in used address map
usedAddrs[simAccount.Address.String()] = true
// set signer privkey
privs[i] = simAccount.PrivKey
// set next input and accumulate total sent coins
inputs[i] = types.NewInput(simAccount.Address, coins)
totalSentCoins = totalSentCoins.Add(coins...)
}
for o := range outputs {
outAddr, _ := simulation.RandomAcc(r, accs)
var outCoins sdk.Coins
// split total sent coins into random subsets for output
if o == len(outputs)-1 {
outCoins = totalSentCoins
} else {
// take random subset of remaining coins for output
// and update remaining coins
outCoins = simulation.RandSubsetCoins(r, totalSentCoins)
totalSentCoins = totalSentCoins.Sub(outCoins)
}
outputs[o] = types.NewOutput(outAddr.Address, outCoins)
}
// remove any output that has no coins
i := 0
for i < len(outputs) {
if outputs[i].Coins.Empty() {
outputs[i] = outputs[len(outputs)-1]
outputs = outputs[:len(outputs)-1]
} else {
// continue onto next coin
i++
}
}
msg := types.MsgMultiSend{
Inputs: inputs,
Outputs: outputs,
}
err := sendMsgMultiSend(r, app, ak, msg, ctx, chainID, privs)
if err != nil {
return simulation.NoOpMsg(types.ModuleName), nil, err
}
return simulation.NewOperationMsg(msg, true, ""), nil, nil
}
}
// sendMsgMultiSend sends a transaction with a MsgMultiSend from a provided random
// account.
func sendMsgMultiSend(
r *rand.Rand, app *baseapp.BaseApp, ak types.AccountKeeper, // nolint:interfacer
msg types.MsgMultiSend, ctx sdk.Context, chainID string, privkeys []crypto.PrivKey,
) error {
accountNumbers := make([]uint64, len(msg.Inputs))
sequenceNumbers := make([]uint64, len(msg.Inputs))
for i := 0; i < len(msg.Inputs); i++ {
acc := ak.GetAccount(ctx, msg.Inputs[i].Address)
accountNumbers[i] = acc.GetAccountNumber()
sequenceNumbers[i] = acc.GetSequence()
}
// feePayer is the first signer, i.e. first input address
feePayer := ak.GetAccount(ctx, msg.Inputs[0].Address)
coins := feePayer.SpendableCoins(ctx.BlockTime())
var (
fees sdk.Coins
err error
)
coins, hasNeg := coins.SafeSub(msg.Inputs[0].Coins)
if !hasNeg {
fees, err = simulation.RandomFees(r, ctx, coins)
if err != nil {
return err
}
}
tx := helpers.GenTx(
[]sdk.Msg{msg},
fees,
helpers.DefaultGenTxGas,
chainID,
accountNumbers,
sequenceNumbers,
privkeys...,
)
_, _, err = app.Deliver(tx)
if err != nil {
return err
}
return nil
}
// randomSendFields returns the sender and recipient simulation accounts as well
// as the transferred amount.
func randomSendFields(
r *rand.Rand, ctx sdk.Context, accs []simulation.Account, ak types.AccountKeeper, // nolint:interfacer
) (simulation.Account, simulation.Account, sdk.Coins, bool, error) {
simAccount, _ := simulation.RandomAcc(r, accs)
toSimAcc, _ := simulation.RandomAcc(r, accs)
// disallow sending money to yourself
for simAccount.PubKey.Equals(toSimAcc.PubKey) {
toSimAcc, _ = simulation.RandomAcc(r, accs)
}
acc := ak.GetAccount(ctx, simAccount.Address)
if acc == nil {
return simAccount, toSimAcc, nil, true, nil // skip error
}
coins := acc.SpendableCoins(ctx.BlockHeader().Time)
sendCoins := simulation.RandSubsetCoins(r, coins)
if sendCoins.Empty() {
return simAccount, toSimAcc, nil, true, nil // skip error
}
return simAccount, toSimAcc, sendCoins, false, nil
}