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createdenom.go
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createdenom.go
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package keeper
import (
"fmt"
"cosmossdk.io/errors"
sdk "github.com/cosmos/cosmos-sdk/types"
banktypes "github.com/cosmos/cosmos-sdk/x/bank/types"
"github.com/MonikaCat/neutron/v2/x/tokenfactory/types"
)
// ConvertToBaseToken converts a fee amount in a whitelisted fee token to the base fee token amount
func (k Keeper) CreateDenom(ctx sdk.Context, creatorAddr, subdenom string) (newTokenDenom string, err error) {
denom, err := k.validateCreateDenom(ctx, creatorAddr, subdenom)
if err != nil {
return "", err
}
err = k.chargeForCreateDenom(ctx, creatorAddr)
if err != nil {
return "", err
}
err = k.createDenomAfterValidation(ctx, creatorAddr, denom)
return denom, err
}
// Runs CreateDenom logic after the charge and all denom validation has been handled.
// Made into a second function for genesis initialization.
func (k Keeper) createDenomAfterValidation(ctx sdk.Context, creatorAddr, denom string) (err error) {
_, exists := k.bankKeeper.GetDenomMetaData(ctx, denom)
if !exists {
denomMetaData := banktypes.Metadata{
DenomUnits: []*banktypes.DenomUnit{{
Denom: denom,
Exponent: 0,
}},
Base: denom,
}
k.bankKeeper.SetDenomMetaData(ctx, denomMetaData)
}
authorityMetadata := types.DenomAuthorityMetadata{
Admin: creatorAddr,
}
err = k.setAuthorityMetadata(ctx, denom, authorityMetadata)
if err != nil {
return err
}
k.addDenomFromCreator(ctx, creatorAddr, denom)
return nil
}
func (k Keeper) validateCreateDenom(ctx sdk.Context, creatorAddr, subdenom string) (newTokenDenom string, err error) {
// Temporary check until IBC bug is sorted out
if k.bankKeeper.HasSupply(ctx, subdenom) {
return "", fmt.Errorf("temporary error until IBC bug is sorted out, " +
"can't create subdenoms that are the same as a native denom")
}
denom, err := types.GetTokenDenom(creatorAddr, subdenom)
if err != nil {
return "", err
}
_, found := k.bankKeeper.GetDenomMetaData(ctx, denom)
if found {
return "", types.ErrDenomExists
}
return denom, nil
}
func (k Keeper) chargeForCreateDenom(ctx sdk.Context, creatorAddr string) (err error) {
params := k.GetParams(ctx)
// ORIGINAL: if DenomCreationFee is non-zero, transfer the tokens from the creator
// account to community pool
// MODIFIED: if DenomCreationFee is non-zero, transfer the tokens from the creator
// account to feeCollectorAddr
if len(params.DenomCreationFee) != 0 {
accAddr, err := sdk.AccAddressFromBech32(creatorAddr)
if err != nil {
return err
}
// Instead of funding community pool we send funds to fee collector addr
// if err := k.communityPoolKeeper.FundCommunityPool(ctx, params.DenomCreationFee, accAddr); err != nil {
// return err
//}
feeCollectorAddr, err := sdk.AccAddressFromBech32(params.FeeCollectorAddress)
if err != nil {
return errors.Wrapf(err, "wrong fee collector address: %v", err)
}
err = k.bankKeeper.SendCoins(
ctx,
accAddr, feeCollectorAddr,
params.DenomCreationFee,
)
if err != nil {
return errors.Wrap(err, "unable to send coins to fee collector")
}
}
// if DenomCreationGasConsume is non-zero, consume the gas
if params.DenomCreationGasConsume != 0 {
ctx.GasMeter().ConsumeGas(params.DenomCreationGasConsume, "consume denom creation gas")
}
return nil
}