52 lines
1.4 KiB
Go
52 lines
1.4 KiB
Go
package posthandler
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import (
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sdk "github.com/cosmos/cosmos-sdk/types"
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"github.com/cosmos/cosmos-sdk/types/tx"
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"github.com/cosmos/cosmos-sdk/x/auth/types"
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)
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// ValidateBasicDecorator will call tx.ValidateBasic and return any non-nil error.
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// If ValidateBasic passes, decorator calls next AnteHandler in chain. Note,
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// ValidateBasicDecorator decorator will not get executed on ReCheckTx since it
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// is not dependent on application state.
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type tipDecorator struct {
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bankKeeper types.BankKeeper
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}
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// NewTipDecorator returns a new decorator for handling transactions with
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// tips.
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//
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// IMPORTANT: This decorator is still in beta, please use it at your own risk.
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func NewTipDecorator(bankKeeper types.BankKeeper) sdk.AnteDecorator {
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return tipDecorator{
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bankKeeper: bankKeeper,
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}
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}
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func (d tipDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simulate bool, next sdk.AnteHandler) (sdk.Context, error) {
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err := d.transferTip(ctx, tx)
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if err != nil {
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return ctx, err
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}
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return next(ctx, tx, simulate)
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}
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// transferTip transfers the tip from the tipper to the fee payer.
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func (d tipDecorator) transferTip(ctx sdk.Context, sdkTx sdk.Tx) error {
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tipTx, ok := sdkTx.(tx.TipTx)
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// No-op if the tx doesn't have tips.
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if !ok || tipTx.GetTip() == nil {
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return nil
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}
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tipper, err := sdk.AccAddressFromBech32(tipTx.GetTip().Tipper)
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if err != nil {
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return err
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}
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return d.bankKeeper.SendCoins(ctx, tipper, tipTx.FeePayer(), tipTx.GetTip().Amount)
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}
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