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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,47 @@ | ||
| package keeper | ||
|
|
||
| import ( | ||
| "testing" | ||
|
|
||
| "github.com/White-Whale-Defi-Platform/migaloo-chain/v3/x/feeburn/keeper" | ||
| "github.com/White-Whale-Defi-Platform/migaloo-chain/v3/x/feeburn/types" | ||
| "github.com/cosmos/cosmos-sdk/codec" | ||
| codectypes "github.com/cosmos/cosmos-sdk/codec/types" | ||
| "github.com/cosmos/cosmos-sdk/store" | ||
| storetypes "github.com/cosmos/cosmos-sdk/store/types" | ||
| sdk "github.com/cosmos/cosmos-sdk/types" | ||
| authtypes "github.com/cosmos/cosmos-sdk/x/auth/types" | ||
| govtypes "github.com/cosmos/cosmos-sdk/x/gov/types" | ||
| "github.com/stretchr/testify/require" | ||
| "github.com/tendermint/tendermint/libs/log" | ||
| tmproto "github.com/tendermint/tendermint/proto/tendermint/types" | ||
| tmdb "github.com/tendermint/tm-db" | ||
| ) | ||
|
|
||
| func FeeburnKeeper(t testing.TB) (*keeper.Keeper, sdk.Context) { | ||
| storeKey := sdk.NewKVStoreKey(types.StoreKey) | ||
| memStoreKey := storetypes.NewMemoryStoreKey(types.MemStoreKey) | ||
|
|
||
| db := tmdb.NewMemDB() | ||
| stateStore := store.NewCommitMultiStore(db) | ||
| stateStore.MountStoreWithDB(storeKey, storetypes.StoreTypeIAVL, db) | ||
| stateStore.MountStoreWithDB(memStoreKey, storetypes.StoreTypeMemory, nil) | ||
| require.NoError(t, stateStore.LoadLatestVersion()) | ||
|
|
||
| registry := codectypes.NewInterfaceRegistry() | ||
| cdc := codec.NewProtoCodec(registry) | ||
|
|
||
| k := keeper.NewKeeper( | ||
| cdc, | ||
| storeKey, | ||
| memStoreKey, | ||
| authtypes.NewModuleAddress(govtypes.ModuleName), | ||
| ) | ||
|
|
||
| ctx := sdk.NewContext(stateStore, tmproto.Header{}, false, log.NewNopLogger()) | ||
|
|
||
| // Initialize params | ||
| _ = k.SetParams(ctx, types.DefaultParams()) | ||
|
|
||
| return k, ctx | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,57 @@ | ||
| // Package nullify provides methods to init nil values structs for test assertion. | ||
| package nullify | ||
|
|
||
| import ( | ||
| "reflect" | ||
| "unsafe" | ||
|
|
||
| sdk "github.com/cosmos/cosmos-sdk/types" | ||
| ) | ||
|
|
||
| var ( | ||
| coinType = reflect.TypeOf(sdk.Coin{}) | ||
| coinsType = reflect.TypeOf(sdk.Coins{}) | ||
| ) | ||
|
|
||
| // Fill analyze all struct fields and slices with | ||
| // reflection and initialize the nil and empty slices, | ||
| // structs, and pointers. | ||
| func Fill(x interface{}) interface{} { | ||
| v := reflect.Indirect(reflect.ValueOf(x)) | ||
| switch v.Kind() { | ||
| case reflect.Slice: | ||
| for i := 0; i < v.Len(); i++ { | ||
| obj := v.Index(i) | ||
| objPt := reflect.NewAt(obj.Type(), unsafe.Pointer(obj.UnsafeAddr())).Interface() | ||
| objPt = Fill(objPt) | ||
| obj.Set(reflect.ValueOf(objPt)) | ||
| } | ||
| case reflect.Struct: | ||
| for i := 0; i < v.NumField(); i++ { | ||
| f := reflect.Indirect(v.Field(i)) | ||
| if !f.CanSet() { | ||
| continue | ||
| } | ||
| switch f.Kind() { | ||
| case reflect.Slice: | ||
| f.Set(reflect.MakeSlice(f.Type(), 0, 0)) | ||
| case reflect.Struct: | ||
| switch f.Type() { | ||
| case coinType: | ||
| coin := reflect.New(coinType).Interface() | ||
| s := reflect.ValueOf(coin).Elem() | ||
| f.Set(s) | ||
| case coinsType: | ||
| coins := reflect.New(coinsType).Interface() | ||
| s := reflect.ValueOf(coins).Elem() | ||
| f.Set(s) | ||
| default: | ||
| objPt := reflect.NewAt(f.Type(), unsafe.Pointer(f.UnsafeAddr())).Interface() | ||
| s := Fill(objPt) | ||
| f.Set(reflect.ValueOf(s)) | ||
| } | ||
| } | ||
| } | ||
| } | ||
| return reflect.Indirect(v).Interface() | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,13 @@ | ||
| package sample | ||
|
|
||
| import ( | ||
| "github.com/cosmos/cosmos-sdk/crypto/keys/ed25519" | ||
| sdk "github.com/cosmos/cosmos-sdk/types" | ||
| ) | ||
|
|
||
| // AccAddress returns a sample account address | ||
| func AccAddress() string { | ||
| pk := ed25519.GenPrivKey().PubKey() | ||
| addr := pk.Address() | ||
| return sdk.AccAddress(addr).String() | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,11 @@ | ||
| package ante | ||
|
|
||
| import ( | ||
| sdk "github.com/cosmos/cosmos-sdk/types" | ||
| ) | ||
|
|
||
| // BankKeeper defines the contract needed for supply related APIs (noalias) | ||
| type BankKeeper interface { | ||
| SendCoinsFromAccountToModule(ctx sdk.Context, senderAddr sdk.AccAddress, recipientModule string, amt sdk.Coins) error | ||
| BurnCoins(ctx sdk.Context, moduleName string, amt sdk.Coins) error | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,155 @@ | ||
| package ante | ||
|
|
||
| import ( | ||
| "fmt" | ||
|
|
||
| errorsmod "cosmossdk.io/errors" | ||
| sdkmath "cosmossdk.io/math" | ||
| sdk "github.com/cosmos/cosmos-sdk/types" | ||
| sdkerrors "github.com/cosmos/cosmos-sdk/types/errors" | ||
| "github.com/cosmos/cosmos-sdk/x/auth/types" | ||
|
|
||
| feeburnkeeper "github.com/White-Whale-Defi-Platform/migaloo-chain/v3/x/feeburn/keeper" | ||
| "github.com/cosmos/cosmos-sdk/x/auth/ante" | ||
| ) | ||
|
|
||
| // DeductFeeDecorator deducts fees from the first signer of the tx | ||
| // If the first signer does not have the funds to pay for the fees, return with InsufficientFunds error | ||
| // Call next AnteHandler if fees successfully deducted | ||
| // CONTRACT: Tx must implement FeeTx interface to use DeductFeeDecorator | ||
| type DeductFeeDecorator struct { | ||
| accountKeeper ante.AccountKeeper | ||
| bankKeeper BankKeeper | ||
| feegrantKeeper ante.FeegrantKeeper | ||
| txFeeChecker ante.TxFeeChecker | ||
| feeburnKeeper feeburnkeeper.Keeper | ||
| } | ||
|
|
||
| func NewDeductFeeDecorator(ak ante.AccountKeeper, bk BankKeeper, fk ante.FeegrantKeeper, tfc ante.TxFeeChecker, fbk feeburnkeeper.Keeper) DeductFeeDecorator { | ||
| if tfc == nil { | ||
| tfc = checkTxFeeWithValidatorMinGasPrices | ||
| } | ||
|
|
||
| return DeductFeeDecorator{ | ||
| accountKeeper: ak, | ||
| bankKeeper: bk, | ||
| feegrantKeeper: fk, | ||
| txFeeChecker: tfc, | ||
| feeburnKeeper: fbk, | ||
| } | ||
| } | ||
|
|
||
| func (dfd DeductFeeDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simulate bool, next sdk.AnteHandler) (sdk.Context, error) { | ||
| feeTx, ok := tx.(sdk.FeeTx) | ||
| if !ok { | ||
| return ctx, errorsmod.Wrap(sdkerrors.ErrTxDecode, "Tx must be a FeeTx") | ||
| } | ||
|
|
||
| if !simulate && ctx.BlockHeight() > 0 && feeTx.GetGas() == 0 { | ||
| return ctx, errorsmod.Wrap(sdkerrors.ErrInvalidGasLimit, "must provide positive gas") | ||
| } | ||
|
|
||
| var ( | ||
| priority int64 | ||
| err error | ||
| ) | ||
|
|
||
| fee := feeTx.GetFee() | ||
| if !simulate { | ||
| fee, priority, err = dfd.txFeeChecker(ctx, tx) | ||
| if err != nil { | ||
| return ctx, err | ||
| } | ||
| } | ||
| if err := dfd.checkDeductFee(ctx, tx, fee); err != nil { | ||
| return ctx, err | ||
| } | ||
|
|
||
| newCtx := ctx.WithPriority(priority) | ||
|
|
||
| return next(newCtx, tx, simulate) | ||
| } | ||
|
|
||
| func (dfd DeductFeeDecorator) checkDeductFee(ctx sdk.Context, sdkTx sdk.Tx, fee sdk.Coins) error { | ||
| feeTx, ok := sdkTx.(sdk.FeeTx) | ||
| if !ok { | ||
| return errorsmod.Wrap(sdkerrors.ErrTxDecode, "Tx must be a FeeTx") | ||
| } | ||
|
|
||
| if addr := dfd.accountKeeper.GetModuleAddress(types.FeeCollectorName); addr == nil { | ||
| return fmt.Errorf("fee collector module account (%s) has not been set", types.FeeCollectorName) | ||
| } | ||
|
|
||
| feePayer := feeTx.FeePayer() | ||
| feeGranter := feeTx.FeeGranter() | ||
| deductFeesFrom := feePayer | ||
|
|
||
| // if feegranter set deduct fee from feegranter account. | ||
| // this works with only when feegrant enabled. | ||
| if feeGranter != nil { | ||
| if dfd.feegrantKeeper == nil { | ||
| return sdkerrors.ErrInvalidRequest.Wrap("fee grants are not enabled") | ||
| } else if !feeGranter.Equals(feePayer) { | ||
| err := dfd.feegrantKeeper.UseGrantedFees(ctx, feeGranter, feePayer, fee, sdkTx.GetMsgs()) | ||
| if err != nil { | ||
| return errorsmod.Wrapf(err, "%s does not allow to pay fees for %s", feeGranter, feePayer) | ||
| } | ||
| } | ||
|
|
||
| deductFeesFrom = feeGranter | ||
| } | ||
|
|
||
| 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 !fee.IsZero() { | ||
| feeBurnPercent, ok := sdk.NewIntFromString(dfd.feeburnKeeper.GetTxFeeBurnPercent(ctx)) | ||
| if !ok { | ||
| return sdkerrors.ErrInvalidType | ||
| } | ||
| err := DeductFees(dfd.bankKeeper, ctx, deductFeesFromAcc, fee, feeBurnPercent) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| } | ||
|
|
||
| events := sdk.Events{ | ||
| sdk.NewEvent( | ||
| sdk.EventTypeTx, | ||
| sdk.NewAttribute(sdk.AttributeKeyFee, fee.String()), | ||
| sdk.NewAttribute(sdk.AttributeKeyFeePayer, deductFeesFrom.String()), | ||
| ), | ||
| } | ||
| ctx.EventManager().EmitEvents(events) | ||
|
|
||
| return nil | ||
| } | ||
|
|
||
| // DeductFees deducts fees from the given account. | ||
| func DeductFees(bankKeeper BankKeeper, ctx sdk.Context, acc types.AccountI, fees sdk.Coins, bp sdkmath.Int) error { | ||
| if !fees.IsValid() { | ||
| return errorsmod.Wrapf(sdkerrors.ErrInsufficientFee, "invalid fee amount: %s", fees) | ||
| } | ||
|
|
||
| // Calculate burning amounts by given percentage and fee amounts | ||
| burningFees := sdk.Coins{} | ||
| for _, fee := range fees { | ||
| burningAmount := fee.Amount.Mul(bp).Quo(sdk.NewInt(100)) | ||
| burningFees = burningFees.Add(sdk.NewCoin(fee.Denom, burningAmount)) | ||
| } | ||
|
|
||
| err := bankKeeper.SendCoinsFromAccountToModule(ctx, acc.GetAddress(), types.FeeCollectorName, fees) | ||
| if err != nil { | ||
| return errorsmod.Wrapf(sdkerrors.ErrInsufficientFunds, err.Error()) | ||
| } | ||
|
|
||
| err = bankKeeper.BurnCoins(ctx, types.FeeCollectorName, burningFees) | ||
| if err != nil { | ||
| return errorsmod.Wrapf(sdkerrors.ErrInsufficientFunds, err.Error()) | ||
| } | ||
|
|
||
| return nil | ||
| } |
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