forked from cosmos/cosmos-sdk
/
msgs.go
271 lines (239 loc) · 9.21 KB
/
msgs.go
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package simulation
import (
"errors"
"fmt"
"math/big"
"math/rand"
"github.com/tendermint/tendermint/crypto"
"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/bank"
"github.com/cosmos/cosmos-sdk/x/mock"
"github.com/cosmos/cosmos-sdk/x/mock/simulation"
)
// SendTx tests and runs a single msg send where both
// accounts already exist.
func SendMsg(mapper auth.AccountKeeper, bk bank.Keeper) simulation.Operation {
handler := bank.NewHandler(bk)
return func(r *rand.Rand, app *baseapp.BaseApp, ctx sdk.Context, accs []simulation.Account, event func(string)) (action string, fOps []simulation.FutureOperation, err error) {
fromAcc, action, msg, abort := createSendMsg(r, ctx, accs, mapper)
if abort {
return action, nil, nil
}
err = sendAndVerifyMsgSend(app, mapper, msg, ctx, []crypto.PrivKey{fromAcc.PrivKey}, handler)
if err != nil {
return "", nil, err
}
event("bank/sendAndVerifyTxSend/ok")
return action, nil, nil
}
}
// SendTx tests and runs a single tx send, with auth where both
// accounts already exist.
func SendTx(mapper auth.AccountKeeper) simulation.Operation {
return func(r *rand.Rand, app *baseapp.BaseApp, ctx sdk.Context, accs []simulation.Account, event func(string)) (action string, fOps []simulation.FutureOperation, err error) {
fromAcc, action, msg, abort := createSendMsg(r, ctx, accs, mapper)
if abort {
return action, nil, nil
}
err = sendAndVerifyMsgSend(app, mapper, msg, ctx, []crypto.PrivKey{fromAcc.PrivKey}, nil)
if err != nil {
return "", nil, err
}
event("bank/sendAndVerifyTxSend/ok")
return action, nil, nil
}
}
func createSendMsg(r *rand.Rand, ctx sdk.Context, accs []simulation.Account, mapper auth.AccountKeeper) (fromAcc simulation.Account, action string, msg bank.MsgSend, abort bool) {
fromAcc = simulation.RandomAcc(r, accs)
toAcc := simulation.RandomAcc(r, accs)
// Disallow sending money to yourself
for {
if !fromAcc.PubKey.Equals(toAcc.PubKey) {
break
}
toAcc = simulation.RandomAcc(r, accs)
}
toAddr := toAcc.Address
initFromCoins := mapper.GetAccount(ctx, fromAcc.Address).SpendableCoins(ctx.BlockHeader().Time)
if len(initFromCoins) == 0 {
return fromAcc, "skipping, no coins at all", msg, true
}
denomIndex := r.Intn(len(initFromCoins))
amt, goErr := randPositiveInt(r, initFromCoins[denomIndex].Amount)
if goErr != nil {
return fromAcc, "skipping bank send due to account having no coins of denomination " + initFromCoins[denomIndex].Denom, msg, true
}
action = fmt.Sprintf("%s is sending %s %s to %s",
fromAcc.Address.String(),
amt.String(),
initFromCoins[denomIndex].Denom,
toAddr.String(),
)
coins := sdk.Coins{sdk.NewCoin(initFromCoins[denomIndex].Denom, amt)}
msg = bank.NewMsgSend(fromAcc.Address, toAcc.Address, coins)
return
}
// Sends and verifies the transition of a msg send.
func sendAndVerifyMsgSend(app *baseapp.BaseApp, mapper auth.AccountKeeper, msg bank.MsgSend, ctx sdk.Context, privkeys []crypto.PrivKey, handler sdk.Handler) error {
fromAcc := mapper.GetAccount(ctx, msg.FromAddress)
AccountNumbers := []uint64{fromAcc.GetAccountNumber()}
SequenceNumbers := []uint64{fromAcc.GetSequence()}
initialFromAddrCoins := fromAcc.GetCoins()
toAcc := mapper.GetAccount(ctx, msg.ToAddress)
initialToAddrCoins := toAcc.GetCoins()
if handler != nil {
res := handler(ctx, msg)
if !res.IsOK() {
if res.Code == bank.CodeSendDisabled {
return nil
}
// TODO: Do this in a more 'canonical' way
return fmt.Errorf("handling msg failed %v", res)
}
} else {
tx := mock.GenTx([]sdk.Msg{msg},
AccountNumbers,
SequenceNumbers,
privkeys...)
res := app.Deliver(tx)
if !res.IsOK() {
// TODO: Do this in a more 'canonical' way
return fmt.Errorf("Deliver failed %v", res)
}
}
fromAcc = mapper.GetAccount(ctx, msg.FromAddress)
toAcc = mapper.GetAccount(ctx, msg.ToAddress)
if !initialFromAddrCoins.Sub(msg.Amount).IsEqual(fromAcc.GetCoins()) {
return fmt.Errorf("fromAddress %s had an incorrect amount of coins", fromAcc.GetAddress())
}
if !initialToAddrCoins.Add(msg.Amount).IsEqual(toAcc.GetCoins()) {
return fmt.Errorf("toAddress %s had an incorrect amount of coins", toAcc.GetAddress())
}
return nil
}
// SingleInputSendTx tests and runs a single msg multisend w/ auth, with one input and one output, where both
// accounts already exist.
func SingleInputMultiSendTx(mapper auth.AccountKeeper) simulation.Operation {
return func(r *rand.Rand, app *baseapp.BaseApp, ctx sdk.Context, accs []simulation.Account, event func(string)) (action string, fOps []simulation.FutureOperation, err error) {
fromAcc, action, msg, abort := createSingleInputMsgMultiSend(r, ctx, accs, mapper)
if abort {
return action, nil, nil
}
err = sendAndVerifyMsgMultiSend(app, mapper, msg, ctx, []crypto.PrivKey{fromAcc.PrivKey}, nil)
if err != nil {
return "", nil, err
}
event("bank/sendAndVerifyTxMultiSend/ok")
return action, nil, nil
}
}
// SingleInputSendMsg tests and runs a single msg multisend, with one input and one output, where both
// accounts already exist.
func SingleInputMsgMultiSend(mapper auth.AccountKeeper, bk bank.Keeper) simulation.Operation {
handler := bank.NewHandler(bk)
return func(r *rand.Rand, app *baseapp.BaseApp, ctx sdk.Context, accs []simulation.Account, event func(string)) (action string, fOps []simulation.FutureOperation, err error) {
fromAcc, action, msg, abort := createSingleInputMsgMultiSend(r, ctx, accs, mapper)
if abort {
return action, nil, nil
}
err = sendAndVerifyMsgMultiSend(app, mapper, msg, ctx, []crypto.PrivKey{fromAcc.PrivKey}, handler)
if err != nil {
return "", nil, err
}
event("bank/sendAndVerifyMsgMultiSend/ok")
return action, nil, nil
}
}
func createSingleInputMsgMultiSend(r *rand.Rand, ctx sdk.Context, accs []simulation.Account, mapper auth.AccountKeeper) (fromAcc simulation.Account, action string, msg bank.MsgMultiSend, abort bool) {
fromAcc = simulation.RandomAcc(r, accs)
toAcc := simulation.RandomAcc(r, accs)
// Disallow sending money to yourself
for {
if !fromAcc.PubKey.Equals(toAcc.PubKey) {
break
}
toAcc = simulation.RandomAcc(r, accs)
}
toAddr := toAcc.Address
initFromCoins := mapper.GetAccount(ctx, fromAcc.Address).SpendableCoins(ctx.BlockHeader().Time)
if len(initFromCoins) == 0 {
return fromAcc, "skipping, no coins at all", msg, true
}
denomIndex := r.Intn(len(initFromCoins))
amt, goErr := randPositiveInt(r, initFromCoins[denomIndex].Amount)
if goErr != nil {
return fromAcc, "skipping bank send due to account having no coins of denomination " + initFromCoins[denomIndex].Denom, msg, true
}
action = fmt.Sprintf("%s is sending %s %s to %s",
fromAcc.Address.String(),
amt.String(),
initFromCoins[denomIndex].Denom,
toAddr.String(),
)
coins := sdk.Coins{sdk.NewCoin(initFromCoins[denomIndex].Denom, amt)}
msg = bank.MsgMultiSend{
Inputs: []bank.Input{bank.NewInput(fromAcc.Address, coins)},
Outputs: []bank.Output{bank.NewOutput(toAddr, coins)},
}
return
}
// Sends and verifies the transition of a msg multisend. This fails if there are repeated inputs or outputs
// pass in handler as nil to handle txs, otherwise handle msgs
func sendAndVerifyMsgMultiSend(app *baseapp.BaseApp, mapper auth.AccountKeeper, msg bank.MsgMultiSend, ctx sdk.Context, privkeys []crypto.PrivKey, handler sdk.Handler) error {
initialInputAddrCoins := make([]sdk.Coins, len(msg.Inputs))
initialOutputAddrCoins := make([]sdk.Coins, len(msg.Outputs))
AccountNumbers := make([]uint64, len(msg.Inputs))
SequenceNumbers := make([]uint64, len(msg.Inputs))
for i := 0; i < len(msg.Inputs); i++ {
acc := mapper.GetAccount(ctx, msg.Inputs[i].Address)
AccountNumbers[i] = acc.GetAccountNumber()
SequenceNumbers[i] = acc.GetSequence()
initialInputAddrCoins[i] = acc.GetCoins()
}
for i := 0; i < len(msg.Outputs); i++ {
acc := mapper.GetAccount(ctx, msg.Outputs[i].Address)
initialOutputAddrCoins[i] = acc.GetCoins()
}
if handler != nil {
res := handler(ctx, msg)
if !res.IsOK() {
if res.Code == bank.CodeSendDisabled {
return nil
}
// TODO: Do this in a more 'canonical' way
return fmt.Errorf("handling msg failed %v", res)
}
} else {
tx := mock.GenTx([]sdk.Msg{msg},
AccountNumbers,
SequenceNumbers,
privkeys...)
res := app.Deliver(tx)
if !res.IsOK() {
// TODO: Do this in a more 'canonical' way
return fmt.Errorf("Deliver failed %v", res)
}
}
for i := 0; i < len(msg.Inputs); i++ {
terminalInputCoins := mapper.GetAccount(ctx, msg.Inputs[i].Address).GetCoins()
if !initialInputAddrCoins[i].Sub(msg.Inputs[i].Coins).IsEqual(terminalInputCoins) {
return fmt.Errorf("input #%d had an incorrect amount of coins", i)
}
}
for i := 0; i < len(msg.Outputs); i++ {
terminalOutputCoins := mapper.GetAccount(ctx, msg.Outputs[i].Address).GetCoins()
if !terminalOutputCoins.IsEqual(initialOutputAddrCoins[i].Add(msg.Outputs[i].Coins)) {
return fmt.Errorf("output #%d had an incorrect amount of coins", i)
}
}
return nil
}
func randPositiveInt(r *rand.Rand, max sdk.Int) (sdk.Int, error) {
if !max.GT(sdk.OneInt()) {
return sdk.Int{}, errors.New("max too small")
}
max = max.Sub(sdk.OneInt())
return sdk.NewIntFromBigInt(new(big.Int).Rand(r, max.BigInt())).Add(sdk.OneInt()), nil
}