refactor(x/auth/middleware)!: tx middleware to support pluggable feemarket module (#11413)

Closes: #11415



## Description

- Create `FeeMarket` interface, and move exiting static fee logic into `StaticFeeMarket` implementation.
- Merged `MempoolFeeMiddleware` and `TxPriorityMiddleware` into `DeductFeeMiddleware`, so we can deduct fee based on the check result.
- ~~Support extension options in `Tx.AuthInfo`, so feemarket module can extend the tx fields.~~ Keep in TxBody
- No Ledger support in v0.46



---

### Author Checklist

*All items are required. Please add a note to the item if the item is not applicable and
please add links to any relevant follow up issues.*

I have...

- [ ] included the correct [type prefix](https://github.com/commitizen/conventional-commit-types/blob/v3.0.0/index.json) in the PR title
- [ ] added `!` to the type prefix if API or client breaking change
- [ ] targeted the correct branch (see [PR Targeting](https://github.com/cosmos/cosmos-sdk/blob/master/CONTRIBUTING.md#pr-targeting))
- [ ] provided a link to the relevant issue or specification
- [ ] followed the guidelines for [building modules](https://github.com/cosmos/cosmos-sdk/blob/master/docs/building-modules)
- [ ] included the necessary unit and integration [tests](https://github.com/cosmos/cosmos-sdk/blob/master/CONTRIBUTING.md#testing)
- [ ] added a changelog entry to `CHANGELOG.md`
- [ ] included comments for [documenting Go code](https://blog.golang.org/godoc)
- [ ] updated the relevant documentation or specification
- [ ] reviewed "Files changed" and left comments if necessary
- [ ] confirmed all CI checks have passed

### Reviewers Checklist

*All items are required. Please add a note if the item is not applicable and please add
your handle next to the items reviewed if you only reviewed selected items.*

I have...

- [ ] confirmed the correct [type prefix](https://github.com/commitizen/conventional-commit-types/blob/v3.0.0/index.json) in the PR title
- [ ] confirmed `!` in the type prefix if API or client breaking change
- [ ] confirmed all author checklist items have been addressed 
- [ ] reviewed state machine logic
- [ ] reviewed API design and naming
- [ ] reviewed documentation is accurate
- [ ] reviewed tests and test coverage
- [ ] manually tested (if applicable)
This commit is contained in:
yihuang 2022-03-29 22:46:56 +08:00 committed by GitHub
parent 4e92b6294d
commit e75c734c83
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
14 changed files with 254 additions and 240 deletions

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@ -148,7 +148,7 @@ Ref: https://keepachangelog.com/en/1.0.0/
* [\#11274](https://github.com/cosmos/cosmos-sdk/pull/11274) `types/errors.New` now is an alias for `types/errors.Register` and should only be used in initialization code.
* (authz)[\#11060](https://github.com/cosmos/cosmos-sdk/pull/11060) `authz.NewMsgGrant` `expiration` is now a pointer. When `nil` is used then no expiration will be set (grant won't expire).
* (x/distribution)[\#11457](https://github.com/cosmos/cosmos-sdk/pull/11457) Add amount field to `distr.MsgWithdrawDelegatorRewardResponse` and `distr.MsgWithdrawValidatorCommissionResponse`.
* (x/auth/middleware) [#11413](https://github.com/cosmos/cosmos-sdk/pull/11413) Refactor tx middleware to be extensible on tx fee logic. Merged `MempoolFeeMiddleware` and `TxPriorityMiddleware` functionalities into `DeductFeeMiddleware`, make the logic extensible using the `TxFeeChecker` option, the current fee logic is preserved by the default `checkTxFeeWithValidatorMinGasPrices` implementation. Change `RejectExtensionOptionsMiddleware` to `NewExtensionOptionsMiddleware` which is extensible with the `ExtensionOptionChecker` option. Unpack the tx extension options `Any`s to interface `TxExtensionOptionI`.
### Client Breaking Changes

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@ -6,6 +6,7 @@ import (
"github.com/cosmos/cosmos-sdk/codec/types"
sdk "github.com/cosmos/cosmos-sdk/types"
"github.com/cosmos/cosmos-sdk/types/msgservice"
tx "github.com/cosmos/cosmos-sdk/types/tx"
)
func NewTestInterfaceRegistry() types.InterfaceRegistry {
@ -31,6 +32,10 @@ func RegisterInterfaces(registry types.InterfaceRegistry) {
(*HasHasAnimalI)(nil),
&HasHasAnimal{},
)
registry.RegisterImplementations(
(*tx.TxExtensionOptionI)(nil),
&Cat{},
)
msgservice.RegisterMsgServiceDesc(registry, &_Msg_serviceDesc)
}

21
types/tx/ext.go Normal file
View File

@ -0,0 +1,21 @@
package tx
import (
"github.com/cosmos/cosmos-sdk/codec/types"
)
// TxExtensionOptionI defines the interface for tx extension options
type TxExtensionOptionI interface{}
// unpackTxExtensionOptionsI unpacks Any's to TxExtensionOptionI's.
func unpackTxExtensionOptionsI(unpacker types.AnyUnpacker, anys []*types.Any) error {
for _, any := range anys {
var opt TxExtensionOptionI
err := unpacker.UnpackAny(any, &opt)
if err != nil {
return err
}
}
return nil
}

View File

@ -173,7 +173,19 @@ func (t *Tx) UnpackInterfaces(unpacker codectypes.AnyUnpacker) error {
// UnpackInterfaces implements the UnpackInterfaceMessages.UnpackInterfaces method
func (m *TxBody) UnpackInterfaces(unpacker codectypes.AnyUnpacker) error {
return UnpackInterfaces(unpacker, m.Messages)
if err := UnpackInterfaces(unpacker, m.Messages); err != nil {
return err
}
if err := unpackTxExtensionOptionsI(unpacker, m.ExtensionOptions); err != nil {
return err
}
if err := unpackTxExtensionOptionsI(unpacker, m.NonCriticalExtensionOptions); err != nil {
return err
}
return nil
}
// UnpackInterfaces implements the UnpackInterfaceMessages.UnpackInterfaces method
@ -200,4 +212,6 @@ func RegisterInterfaces(registry codectypes.InterfaceRegistry) {
registry.RegisterInterface("cosmos.tx.v1beta1.Tx", (*sdk.Tx)(nil))
registry.RegisterImplementations((*sdk.Tx)(nil), &Tx{})
registry.RegisterInterface("cosmos.tx.v1beta1.TxExtensionOptionI", (*TxExtensionOptionI)(nil))
}

View File

@ -72,7 +72,7 @@ func (s *MWTestSuite) TestBranchStore() {
middleware.NewTxDecoderMiddleware(s.clientCtx.TxConfig.TxDecoder()),
middleware.GasTxMiddleware,
middleware.RecoveryTxMiddleware,
middleware.DeductFeeMiddleware(s.app.AccountKeeper, s.app.BankKeeper, s.app.FeeGrantKeeper),
middleware.DeductFeeMiddleware(s.app.AccountKeeper, s.app.BankKeeper, s.app.FeeGrantKeeper, nil),
middleware.IncrementSequenceMiddleware(s.app.AccountKeeper),
middleware.WithBranchedStore,
middleware.ConsumeBlockGasMiddleware,

View File

@ -14,36 +14,53 @@ type HasExtensionOptionsTx interface {
GetNonCriticalExtensionOptions() []*codectypes.Any
}
type rejectExtensionOptionsTxHandler struct {
next tx.Handler
// ExtensionOptionChecker is a function that returns true if the extension option is accepted.
type ExtensionOptionChecker func(*codectypes.Any) bool
// rejectExtensionOption is the default extension check that reject all tx
// extensions.
func rejectExtensionOption(*codectypes.Any) bool {
return false
}
// RejectExtensionOptionsMiddleware creates a new rejectExtensionOptionsMiddleware.
// rejectExtensionOptionsMiddleware is a middleware that rejects all extension
// options which can optionally be included in protobuf transactions. Users that
// need extension options should create a custom middleware chain that handles
// needed extension options properly and rejects unknown ones.
func RejectExtensionOptionsMiddleware(txh tx.Handler) tx.Handler {
type rejectExtensionOptionsTxHandler struct {
next tx.Handler
checker ExtensionOptionChecker
}
// NewExtensionOptionsMiddleware creates a new middleware that rejects all extension
// options which can optionally be included in protobuf transactions that don't pass the checker.
// Users that need extension options should pass a custom checker that returns true for the
// needed extension options.
func NewExtensionOptionsMiddleware(checker ExtensionOptionChecker) tx.Middleware {
if checker == nil {
checker = rejectExtensionOption
}
return func(txh tx.Handler) tx.Handler {
return rejectExtensionOptionsTxHandler{
next: txh,
checker: checker,
}
}
}
var _ tx.Handler = rejectExtensionOptionsTxHandler{}
func checkExtOpts(tx sdk.Tx) error {
func checkExtOpts(tx sdk.Tx, checker ExtensionOptionChecker) error {
if hasExtOptsTx, ok := tx.(HasExtensionOptionsTx); ok {
if len(hasExtOptsTx.GetExtensionOptions()) != 0 {
for _, opt := range hasExtOptsTx.GetExtensionOptions() {
if !checker(opt) {
return sdkerrors.ErrUnknownExtensionOptions
}
}
}
return nil
}
// CheckTx implements tx.Handler.CheckTx.
func (txh rejectExtensionOptionsTxHandler) CheckTx(ctx context.Context, req tx.Request, checkReq tx.RequestCheckTx) (tx.Response, tx.ResponseCheckTx, error) {
if err := checkExtOpts(req.Tx); err != nil {
if err := checkExtOpts(req.Tx, txh.checker); err != nil {
return tx.Response{}, tx.ResponseCheckTx{}, err
}
@ -52,7 +69,7 @@ func (txh rejectExtensionOptionsTxHandler) CheckTx(ctx context.Context, req tx.R
// DeliverTx implements tx.Handler.DeliverTx.
func (txh rejectExtensionOptionsTxHandler) DeliverTx(ctx context.Context, req tx.Request) (tx.Response, error) {
if err := checkExtOpts(req.Tx); err != nil {
if err := checkExtOpts(req.Tx, txh.checker); err != nil {
return tx.Response{}, err
}
@ -61,7 +78,7 @@ func (txh rejectExtensionOptionsTxHandler) DeliverTx(ctx context.Context, req tx
// SimulateTx implements tx.Handler.SimulateTx method.
func (txh rejectExtensionOptionsTxHandler) SimulateTx(ctx context.Context, req tx.Request) (tx.Response, error) {
if err := checkExtOpts(req.Tx); err != nil {
if err := checkExtOpts(req.Tx, txh.checker); err != nil {
return tx.Response{}, err
}

View File

@ -2,6 +2,7 @@ package middleware_test
import (
"github.com/cosmos/cosmos-sdk/codec/types"
codectypes "github.com/cosmos/cosmos-sdk/codec/types"
"github.com/cosmos/cosmos-sdk/testutil/testdata"
sdk "github.com/cosmos/cosmos-sdk/types"
typestx "github.com/cosmos/cosmos-sdk/types/tx"
@ -9,11 +10,22 @@ import (
"github.com/cosmos/cosmos-sdk/x/auth/tx"
)
func (s *MWTestSuite) TestRejectExtensionOptionsMiddleware() {
func (s *MWTestSuite) TestExtensionOptionsMiddleware() {
testCases := []struct {
msg string
allow bool
}{
{"allow extension", true},
{"reject extension", false},
}
for _, tc := range testCases {
s.Run(tc.msg, func() {
ctx := s.SetupTest(true) // setup
txBuilder := s.clientCtx.TxConfig.NewTxBuilder()
txHandler := middleware.ComposeMiddlewares(noopTxHandler, middleware.RejectExtensionOptionsMiddleware)
txHandler := middleware.ComposeMiddlewares(noopTxHandler, middleware.NewExtensionOptionsMiddleware(func(_ *codectypes.Any) bool {
return tc.allow
}))
// no extension options should not trigger an error
theTx := txBuilder.GetTx()
@ -26,11 +38,17 @@ func (s *MWTestSuite) TestRejectExtensionOptionsMiddleware() {
return
}
// setting any extension option should cause an error
// set an extension option and check
any, err := types.NewAnyWithValue(testdata.NewTestMsg())
s.Require().NoError(err)
extOptsTxBldr.SetExtensionOptions(any)
theTx = txBuilder.GetTx()
_, _, err = txHandler.CheckTx(sdk.WrapSDKContext(ctx), typestx.Request{Tx: theTx}, typestx.RequestCheckTx{})
if tc.allow {
s.Require().NoError(err)
} else {
s.Require().EqualError(err, "unknown extension options")
}
})
}
}

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@ -10,73 +10,9 @@ import (
"github.com/cosmos/cosmos-sdk/x/auth/types"
)
var _ tx.Handler = mempoolFeeTxHandler{}
type mempoolFeeTxHandler struct {
next tx.Handler
}
// MempoolFeeMiddleware will check if the transaction's fee is at least as large
// as the local validator's minimum gasFee (defined in validator config).
// If fee is too low, middleware returns error and tx is rejected from mempool.
// Note this only applies when ctx.CheckTx = true
// If fee is high enough or not CheckTx, then call next middleware
// CONTRACT: Tx must implement FeeTx to use MempoolFeeMiddleware
func MempoolFeeMiddleware(txh tx.Handler) tx.Handler {
return mempoolFeeTxHandler{
next: txh,
}
}
// CheckTx implements tx.Handler.CheckTx. It is responsible for determining if a
// transaction's fees meet the required minimum of the processing node. Note, a
// node can have zero fees set as the minimum. If non-zero minimum fees are set
// and the transaction does not meet the minimum, the transaction is rejected.
//
// Recall, a transaction's fee is determined by ceil(minGasPrice * gasLimit).
func (txh mempoolFeeTxHandler) CheckTx(ctx context.Context, req tx.Request, checkReq tx.RequestCheckTx) (tx.Response, tx.ResponseCheckTx, error) {
sdkCtx := sdk.UnwrapSDKContext(ctx)
feeTx, ok := req.Tx.(sdk.FeeTx)
if !ok {
return tx.Response{}, tx.ResponseCheckTx{}, sdkerrors.Wrap(sdkerrors.ErrTxDecode, "Tx must be a FeeTx")
}
feeCoins := feeTx.GetFee()
gas := feeTx.GetGas()
// Ensure that the provided fees meet a minimum threshold for the validator,
// if this is a CheckTx. This is only for local mempool purposes, and thus
// is only ran on check tx.
minGasPrices := sdkCtx.MinGasPrices()
if !minGasPrices.IsZero() {
requiredFees := make(sdk.Coins, len(minGasPrices))
// Determine the required fees by multiplying each required minimum gas
// price by the gas limit, where fee = ceil(minGasPrice * gasLimit).
glDec := sdk.NewDec(int64(gas))
for i, gp := range minGasPrices {
fee := gp.Amount.Mul(glDec)
requiredFees[i] = sdk.NewCoin(gp.Denom, fee.Ceil().RoundInt())
}
if !feeCoins.IsAnyGTE(requiredFees) {
return tx.Response{}, tx.ResponseCheckTx{}, sdkerrors.Wrapf(sdkerrors.ErrInsufficientFee, "insufficient fees; got: %s required: %s", feeCoins, requiredFees)
}
}
return txh.next.CheckTx(ctx, req, checkReq)
}
// DeliverTx implements tx.Handler.DeliverTx.
func (txh mempoolFeeTxHandler) DeliverTx(ctx context.Context, req tx.Request) (tx.Response, error) {
return txh.next.DeliverTx(ctx, req)
}
// SimulateTx implements tx.Handler.SimulateTx.
func (txh mempoolFeeTxHandler) SimulateTx(ctx context.Context, req tx.Request) (tx.Response, error) {
return txh.next.SimulateTx(ctx, req)
}
// TxFeeChecker check if the provided fee is enough and returns the effective fee and tx priority,
// the effective fee should be deducted later, and the priority should be returned in abci response.
type TxFeeChecker func(ctx sdk.Context, tx sdk.Tx) (sdk.Coins, int64, error)
var _ tx.Handler = deductFeeTxHandler{}
@ -84,6 +20,7 @@ type deductFeeTxHandler struct {
accountKeeper AccountKeeper
bankKeeper types.BankKeeper
feegrantKeeper FeegrantKeeper
txFeeChecker TxFeeChecker
next tx.Handler
}
@ -91,19 +28,22 @@ type deductFeeTxHandler struct {
// If the first signer does not have the funds to pay for the fees, return with InsufficientFunds error
// Call next middleware if fees successfully deducted
// CONTRACT: Tx must implement FeeTx interface to use deductFeeTxHandler
func DeductFeeMiddleware(ak AccountKeeper, bk types.BankKeeper, fk FeegrantKeeper) tx.Middleware {
func DeductFeeMiddleware(ak AccountKeeper, bk types.BankKeeper, fk FeegrantKeeper, tfc TxFeeChecker) tx.Middleware {
if tfc == nil {
tfc = checkTxFeeWithValidatorMinGasPrices
}
return func(txh tx.Handler) tx.Handler {
return deductFeeTxHandler{
accountKeeper: ak,
bankKeeper: bk,
feegrantKeeper: fk,
txFeeChecker: tfc,
next: txh,
}
}
}
func (dfd deductFeeTxHandler) checkDeductFee(ctx context.Context, sdkTx sdk.Tx) error {
sdkCtx := sdk.UnwrapSDKContext(ctx)
func (dfd deductFeeTxHandler) checkDeductFee(ctx sdk.Context, sdkTx sdk.Tx, fee sdk.Coins) error {
feeTx, ok := sdkTx.(sdk.FeeTx)
if !ok {
return sdkerrors.Wrap(sdkerrors.ErrTxDecode, "Tx must be a FeeTx")
@ -113,10 +53,8 @@ func (dfd deductFeeTxHandler) checkDeductFee(ctx context.Context, sdkTx sdk.Tx)
return fmt.Errorf("Fee collector module account (%s) has not been set", types.FeeCollectorName)
}
fee := feeTx.GetFee()
feePayer := feeTx.FeePayer()
feeGranter := feeTx.FeeGranter()
deductFeesFrom := feePayer
// if feegranter set deduct fee from feegranter account.
@ -125,7 +63,7 @@ func (dfd deductFeeTxHandler) checkDeductFee(ctx context.Context, sdkTx sdk.Tx)
if dfd.feegrantKeeper == nil {
return sdkerrors.ErrInvalidRequest.Wrap("fee grants are not enabled")
} else if !feeGranter.Equals(feePayer) {
err := dfd.feegrantKeeper.UseGrantedFees(sdkCtx, feeGranter, feePayer, fee, sdkTx.GetMsgs())
err := dfd.feegrantKeeper.UseGrantedFees(ctx, feeGranter, feePayer, fee, sdkTx.GetMsgs())
if err != nil {
return sdkerrors.Wrapf(err, "%s does not not allow to pay fees for %s", feeGranter, feePayer)
}
@ -134,39 +72,52 @@ func (dfd deductFeeTxHandler) checkDeductFee(ctx context.Context, sdkTx sdk.Tx)
deductFeesFrom = feeGranter
}
deductFeesFromAcc := dfd.accountKeeper.GetAccount(sdkCtx, deductFeesFrom)
deductFeesFromAcc := dfd.accountKeeper.GetAccount(ctx, deductFeesFrom)
if deductFeesFromAcc == nil {
return sdkerrors.ErrUnknownAddress.Wrapf("fee payer address: %s does not exist", deductFeesFrom)
}
// deduct the fees
if !feeTx.GetFee().IsZero() {
err := DeductFees(dfd.bankKeeper, sdkCtx, deductFeesFromAcc, feeTx.GetFee())
if !fee.IsZero() {
err := DeductFees(dfd.bankKeeper, ctx, deductFeesFromAcc, fee)
if err != nil {
return err
}
}
events := sdk.Events{sdk.NewEvent(sdk.EventTypeTx,
sdk.NewAttribute(sdk.AttributeKeyFee, feeTx.GetFee().String()),
sdk.NewAttribute(sdk.AttributeKeyFee, fee.String()),
)}
sdkCtx.EventManager().EmitEvents(events)
ctx.EventManager().EmitEvents(events)
return nil
}
// CheckTx implements tx.Handler.CheckTx.
func (dfd deductFeeTxHandler) CheckTx(ctx context.Context, req tx.Request, checkReq tx.RequestCheckTx) (tx.Response, tx.ResponseCheckTx, error) {
if err := dfd.checkDeductFee(ctx, req.Tx); err != nil {
sdkCtx := sdk.UnwrapSDKContext(ctx)
fee, priority, err := dfd.txFeeChecker(sdkCtx, req.Tx)
if err != nil {
return tx.Response{}, tx.ResponseCheckTx{}, err
}
if err := dfd.checkDeductFee(sdkCtx, req.Tx, fee); err != nil {
return tx.Response{}, tx.ResponseCheckTx{}, err
}
return dfd.next.CheckTx(ctx, req, checkReq)
res, checkRes, err := dfd.next.CheckTx(ctx, req, checkReq)
checkRes.Priority = priority
return res, checkRes, err
}
// DeliverTx implements tx.Handler.DeliverTx.
func (dfd deductFeeTxHandler) DeliverTx(ctx context.Context, req tx.Request) (tx.Response, error) {
if err := dfd.checkDeductFee(ctx, req.Tx); err != nil {
sdkCtx := sdk.UnwrapSDKContext(ctx)
fee, _, err := dfd.txFeeChecker(sdkCtx, req.Tx)
if err != nil {
return tx.Response{}, err
}
if err := dfd.checkDeductFee(sdkCtx, req.Tx, fee); err != nil {
return tx.Response{}, err
}
@ -174,7 +125,12 @@ func (dfd deductFeeTxHandler) DeliverTx(ctx context.Context, req tx.Request) (tx
}
func (dfd deductFeeTxHandler) SimulateTx(ctx context.Context, req tx.Request) (tx.Response, error) {
if err := dfd.checkDeductFee(ctx, req.Tx); err != nil {
sdkCtx := sdk.UnwrapSDKContext(ctx)
fee, _, err := dfd.txFeeChecker(sdkCtx, req.Tx)
if err != nil {
return tx.Response{}, err
}
if err := dfd.checkDeductFee(sdkCtx, req.Tx, fee); err != nil {
return tx.Response{}, err
}

View File

@ -13,14 +13,21 @@ func (s *MWTestSuite) TestEnsureMempoolFees() {
ctx := s.SetupTest(true) // setup
txBuilder := s.clientCtx.TxConfig.NewTxBuilder()
txHandler := middleware.ComposeMiddlewares(noopTxHandler, middleware.MempoolFeeMiddleware)
txHandler := middleware.ComposeMiddlewares(noopTxHandler, middleware.DeductFeeMiddleware(
s.app.AccountKeeper,
s.app.BankKeeper,
s.app.FeeGrantKeeper,
nil,
))
// keys and addresses
priv1, _, addr1 := testdata.KeyTestPubAddr()
// msg and signatures
msg := testdata.NewTestMsg(addr1)
feeAmount := testdata.NewTestFeeAmount()
atomCoin := sdk.NewCoin("atom", sdk.NewInt(150))
apeCoin := sdk.NewInt64Coin("ape", 1500000)
feeAmount := sdk.NewCoins(apeCoin, atomCoin)
gasLimit := testdata.NewTestGasLimit()
s.Require().NoError(txBuilder.SetMsgs(msg))
txBuilder.SetFeeAmount(feeAmount)
@ -39,16 +46,23 @@ func (s *MWTestSuite) TestEnsureMempoolFees() {
_, _, err = txHandler.CheckTx(sdk.WrapSDKContext(ctx), tx.Request{Tx: testTx}, tx.RequestCheckTx{})
s.Require().NotNil(err, "Middleware should have errored on too low fee for local gasPrice")
// txHandler should not error since we do not check minGasPrice in DeliverTx
// txHandler should fail since we also check minGasPrice in DeliverTx
_, err = txHandler.DeliverTx(sdk.WrapSDKContext(ctx), tx.Request{Tx: testTx})
s.Require().Nil(err, "MempoolFeeMiddleware returned error in DeliverTx")
s.Require().Error(err, "MempoolFeeMiddleware don't error in DeliverTx")
atomPrice = sdk.NewDecCoinFromDec("atom", sdk.NewDec(0).Quo(sdk.NewDec(100000)))
lowGasPrice := []sdk.DecCoin{atomPrice}
ctx = ctx.WithMinGasPrices(lowGasPrice)
_, _, err = txHandler.CheckTx(sdk.WrapSDKContext(ctx), tx.Request{Tx: testTx}, tx.RequestCheckTx{})
// Set account with sufficient funds
acc := s.app.AccountKeeper.NewAccountWithAddress(ctx, addr1)
s.app.AccountKeeper.SetAccount(ctx, acc)
err = testutil.FundAccount(s.app.BankKeeper, ctx, addr1, feeAmount)
s.Require().NoError(err)
_, checkTxRes, err := txHandler.CheckTx(sdk.WrapSDKContext(ctx), tx.Request{Tx: testTx}, tx.RequestCheckTx{})
s.Require().Nil(err, "Middleware should not have errored on fee higher than local gasPrice")
s.Require().Equal(atomCoin.Amount.Int64(), checkTxRes.Priority, "priority should be atom amount")
}
func (s *MWTestSuite) TestDeductFees() {
@ -60,6 +74,7 @@ func (s *MWTestSuite) TestDeductFees() {
s.app.AccountKeeper,
s.app.BankKeeper,
s.app.FeeGrantKeeper,
nil,
),
)

View File

@ -36,6 +36,7 @@ func (s *MWTestSuite) TestDeductFeesNoDelegation() {
s.app.AccountKeeper,
s.app.BankKeeper,
s.app.FeeGrantKeeper,
nil,
),
)

View File

@ -48,6 +48,8 @@ type TxHandlerOptions struct {
FeegrantKeeper FeegrantKeeper
SignModeHandler authsigning.SignModeHandler
SigGasConsumer func(meter sdk.GasMeter, sig signing.SignatureV2, params types.Params) error
ExtensionOptionChecker ExtensionOptionChecker
TxFeeChecker TxFeeChecker
}
// NewDefaultTxHandler defines a TxHandler middleware stacks that should work
@ -74,6 +76,16 @@ func NewDefaultTxHandler(options TxHandlerOptions) (tx.Handler, error) {
sigGasConsumer = DefaultSigVerificationGasConsumer
}
var extensionOptionChecker = options.ExtensionOptionChecker
if extensionOptionChecker == nil {
extensionOptionChecker = rejectExtensionOption
}
var txFeeChecker = options.TxFeeChecker
if txFeeChecker == nil {
txFeeChecker = checkTxFeeWithValidatorMinGasPrices
}
return ComposeMiddlewares(
NewRunMsgsTxHandler(options.MsgServiceRouter, options.LegacyRouter),
NewTxDecoderMiddleware(options.TxDecoder),
@ -89,10 +101,8 @@ func NewDefaultTxHandler(options TxHandlerOptions) (tx.Handler, error) {
// Choose which events to index in Tendermint. Make sure no events are
// emitted outside of this middleware.
NewIndexEventsTxMiddleware(options.IndexEvents),
// Reject all extension options which can optionally be included in the
// tx.
RejectExtensionOptionsMiddleware,
MempoolFeeMiddleware,
// Reject all extension options other than the ones needed by the feemarket.
NewExtensionOptionsMiddleware(extensionOptionChecker),
ValidateBasicMiddleware,
TxTimeoutHeightMiddleware,
ValidateMemoMiddleware(options.AccountKeeper),
@ -101,8 +111,7 @@ func NewDefaultTxHandler(options TxHandlerOptions) (tx.Handler, error) {
// ComposeMiddlewares godoc for details.
// `DeductFeeMiddleware` and `IncrementSequenceMiddleware` should be put outside of `WithBranchedStore` middleware,
// so their storage writes are not discarded when tx fails.
DeductFeeMiddleware(options.AccountKeeper, options.BankKeeper, options.FeegrantKeeper),
TxPriorityMiddleware,
DeductFeeMiddleware(options.AccountKeeper, options.BankKeeper, options.FeegrantKeeper, txFeeChecker),
SetPubKeyMiddleware(options.AccountKeeper),
ValidateSigCountMiddleware(options.AccountKeeper),
SigGasConsumeMiddleware(options.AccountKeeper, sigGasConsumer),

View File

@ -1,63 +0,0 @@
package middleware
import (
"context"
sdk "github.com/cosmos/cosmos-sdk/types"
sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
"github.com/cosmos/cosmos-sdk/types/tx"
)
var _ tx.Handler = txPriorityHandler{}
type txPriorityHandler struct {
next tx.Handler
}
// TxPriorityMiddleware implements tx handling middleware that determines a
// transaction's priority via a naive mechanism -- the total sum of fees provided.
// It sets the Priority in ResponseCheckTx only.
func TxPriorityMiddleware(txh tx.Handler) tx.Handler {
return txPriorityHandler{next: txh}
}
// CheckTx implements tx.Handler.CheckTx. We set the Priority of the transaction
// to be ordered in the Tendermint mempool based naively on the total sum of all
// fees included. Applications that need more sophisticated mempool ordering
// should look to implement their own fee handling middleware instead of using
// TxPriorityHandler.
func (h txPriorityHandler) CheckTx(ctx context.Context, req tx.Request, checkReq tx.RequestCheckTx) (tx.Response, tx.ResponseCheckTx, error) {
feeTx, ok := req.Tx.(sdk.FeeTx)
if !ok {
return tx.Response{}, tx.ResponseCheckTx{}, sdkerrors.Wrap(sdkerrors.ErrTxDecode, "Tx must be a FeeTx")
}
feeCoins := feeTx.GetFee()
res, checkRes, err := h.next.CheckTx(ctx, req, checkReq)
checkRes.Priority = GetTxPriority(feeCoins)
return res, checkRes, err
}
func (h txPriorityHandler) DeliverTx(ctx context.Context, req tx.Request) (tx.Response, error) {
return h.next.DeliverTx(ctx, req)
}
func (h txPriorityHandler) SimulateTx(ctx context.Context, req tx.Request) (tx.Response, error) {
return h.next.SimulateTx(ctx, req)
}
// GetTxPriority returns a naive tx priority based on the amount of the smallest denomination of the fee
// provided in a transaction.
func GetTxPriority(fee sdk.Coins) int64 {
var priority int64
for _, c := range fee {
p := c.Amount.Int64()
if priority == 0 || p < priority {
priority = p
}
}
return priority
}

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@ -1,38 +0,0 @@
package middleware_test
import (
cryptotypes "github.com/cosmos/cosmos-sdk/crypto/types"
"github.com/cosmos/cosmos-sdk/testutil/testdata"
sdk "github.com/cosmos/cosmos-sdk/types"
"github.com/cosmos/cosmos-sdk/types/tx"
"github.com/cosmos/cosmos-sdk/x/auth/middleware"
)
func (s *MWTestSuite) TestPriority() {
ctx := s.SetupTest(true) // setup
txBuilder := s.clientCtx.TxConfig.NewTxBuilder()
txHandler := middleware.ComposeMiddlewares(noopTxHandler, middleware.TxPriorityMiddleware)
// keys and addresses
priv1, _, addr1 := testdata.KeyTestPubAddr()
// msg and signatures
msg := testdata.NewTestMsg(addr1)
atomCoin := sdk.NewCoin("atom", sdk.NewInt(150))
apeCoin := sdk.NewInt64Coin("ape", 1500000)
feeAmount := sdk.NewCoins(apeCoin, atomCoin)
gasLimit := testdata.NewTestGasLimit()
s.Require().NoError(txBuilder.SetMsgs(msg))
txBuilder.SetFeeAmount(feeAmount)
txBuilder.SetGasLimit(gasLimit)
privs, accNums, accSeqs := []cryptotypes.PrivKey{priv1}, []uint64{0}, []uint64{0}
testTx, _, err := s.createTestTx(txBuilder, privs, accNums, accSeqs, ctx.ChainID())
s.Require().NoError(err)
// txHandler errors with insufficient fees
_, checkTxRes, err := txHandler.CheckTx(sdk.WrapSDKContext(ctx), tx.Request{Tx: testTx}, tx.RequestCheckTx{})
s.Require().NoError(err, "Middleware should not have errored on too low fee for local gasPrice")
s.Require().Equal(atomCoin.Amount.Int64(), checkTxRes.Priority, "priority should be atom amount")
}

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@ -0,0 +1,59 @@
package middleware
import (
"math"
sdk "github.com/cosmos/cosmos-sdk/types"
sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
)
// checkTxFeeWithValidatorMinGasPrices implements the default fee logic, where the minimum price per
// unit of gas is fixed and set by each validator, can the tx priority is computed from the gas price.
func checkTxFeeWithValidatorMinGasPrices(ctx sdk.Context, tx sdk.Tx) (sdk.Coins, int64, error) {
feeTx, ok := tx.(sdk.FeeTx)
if !ok {
return nil, 0, sdkerrors.Wrap(sdkerrors.ErrTxDecode, "Tx must be a FeeTx")
}
feeCoins := feeTx.GetFee()
gas := feeTx.GetGas()
// Ensure that the provided fees meet a minimum threshold for the validator,
// This is only for local mempool purposes, if this is a DeliverTx, the `MinGasPrices` should be zero.
minGasPrices := ctx.MinGasPrices()
if !minGasPrices.IsZero() {
requiredFees := make(sdk.Coins, len(minGasPrices))
// Determine the required fees by multiplying each required minimum gas
// price by the gas limit, where fee = ceil(minGasPrice * gasLimit).
glDec := sdk.NewDec(int64(gas))
for i, gp := range minGasPrices {
fee := gp.Amount.Mul(glDec)
requiredFees[i] = sdk.NewCoin(gp.Denom, fee.Ceil().RoundInt())
}
if !feeCoins.IsAnyGTE(requiredFees) {
return nil, 0, sdkerrors.Wrapf(sdkerrors.ErrInsufficientFee, "insufficient fees; got: %s required: %s", feeCoins, requiredFees)
}
}
priority := getTxPriority(feeCoins)
return feeCoins, priority, nil
}
// getTxPriority returns a naive tx priority based on the amount of the smallest denomination of the fee
// provided in a transaction.
func getTxPriority(fee sdk.Coins) int64 {
var priority int64
for _, c := range fee {
p := int64(math.MaxInt64)
if c.Amount.IsInt64() {
p = c.Amount.Int64()
}
if priority == 0 || p < priority {
priority = p
}
}
return priority
}