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keeper.go
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keeper.go
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package keeper
import (
"fmt"
sdkerrors "cosmossdk.io/errors"
banktypes "github.com/cosmos/cosmos-sdk/x/bank/types"
"github.com/tendermint/tendermint/libs/log"
"github.com/cosmos/cosmos-sdk/codec"
storetypes "github.com/cosmos/cosmos-sdk/store/types"
sdk "github.com/cosmos/cosmos-sdk/types"
paramtypes "github.com/cosmos/cosmos-sdk/x/params/types"
"github.com/dymensionxyz/dymension/v3/utils"
"github.com/dymensionxyz/dymension/v3/x/rollapp/types"
)
type (
Keeper struct {
cdc codec.BinaryCodec
storeKey storetypes.StoreKey
memKey storetypes.StoreKey
hooks types.MultiRollappHooks
paramstore paramtypes.Subspace
ibcclientKeeper types.IBCClientKeeper
transferKeeper types.TransferKeeper
channelKeeper types.ChannelKeeper
bankKeeper types.BankKeeper
denommetadataKeeper types.DenomMetadataKeeper
}
)
func NewKeeper(
cdc codec.BinaryCodec,
storeKey,
memKey storetypes.StoreKey,
ps paramtypes.Subspace,
ibcclientKeeper types.IBCClientKeeper,
transferKeeper types.TransferKeeper,
channelKeeper types.ChannelKeeper,
bankKeeper types.BankKeeper,
denommetadataKeeper types.DenomMetadataKeeper,
) *Keeper {
// set KeyTable if it has not already been set
if !ps.HasKeyTable() {
ps = ps.WithKeyTable(types.ParamKeyTable())
}
return &Keeper{
cdc: cdc,
storeKey: storeKey,
memKey: memKey,
paramstore: ps,
hooks: nil,
ibcclientKeeper: ibcclientKeeper,
transferKeeper: transferKeeper,
channelKeeper: channelKeeper,
bankKeeper: bankKeeper,
denommetadataKeeper: denommetadataKeeper,
}
}
func (k Keeper) Logger(ctx sdk.Context) log.Logger {
return ctx.Logger().With("module", fmt.Sprintf("x/%s", types.ModuleName))
}
// TriggerRollappGenesisEvent triggers the genesis event for the rollapp.
func (k Keeper) TriggerRollappGenesisEvent(ctx sdk.Context, rollapp types.Rollapp) error {
// Validate it hasn't been triggered yet
if rollapp.GenesisState.IsGenesisEvent {
return types.ErrGenesisEventAlreadyTriggered
}
if err := k.registerDenomMetadata(ctx, rollapp); err != nil {
return sdkerrors.Wrapf(types.ErrRegisterDenomMetadataFailed, "register denom metadata: %s", err)
}
if err := k.mintRollappGenesisTokens(ctx, rollapp); err != nil {
return sdkerrors.Wrapf(types.ErrMintTokensFailed, "mint rollapp genesis tokens: %s", err)
}
rollapp.GenesisState.IsGenesisEvent = true
k.SetRollapp(ctx, rollapp)
return nil
}
// registerDenomMetadata registers the denom metadata for the IBC token
func (k Keeper) registerDenomMetadata(ctx sdk.Context, rollapp types.Rollapp) error {
for i := range rollapp.TokenMetadata {
denomTrace := utils.GetForeignDenomTrace(rollapp.ChannelId, rollapp.TokenMetadata[i].Base)
traceHash := denomTrace.Hash()
// if the denom trace does not exist, add it
if !k.transferKeeper.HasDenomTrace(ctx, traceHash) {
k.transferKeeper.SetDenomTrace(ctx, denomTrace)
}
ibcBaseDenom := denomTrace.IBCDenom()
// create a new token denom metadata where it's base = ibcDenom,
// and the rest of the fields are taken from rollapp.metadata
metadata := banktypes.Metadata{
Description: "auto-generated metadata for " + ibcBaseDenom + " from rollapp " + rollapp.RollappId,
Base: ibcBaseDenom,
DenomUnits: make([]*banktypes.DenomUnit, len(rollapp.TokenMetadata[i].DenomUnits)),
Display: rollapp.TokenMetadata[i].Display,
Name: rollapp.TokenMetadata[i].Name,
Symbol: rollapp.TokenMetadata[i].Symbol,
URI: rollapp.TokenMetadata[i].URI,
URIHash: rollapp.TokenMetadata[i].URIHash,
}
// Copy DenomUnits slice
for j, du := range rollapp.TokenMetadata[i].DenomUnits {
newDu := banktypes.DenomUnit{
Aliases: du.Aliases,
Denom: du.Denom,
Exponent: du.Exponent,
}
// base denom_unit should be the same as baseDenom
if newDu.Exponent == 0 {
newDu.Denom = ibcBaseDenom
newDu.Aliases = append(newDu.Aliases, du.Denom)
}
metadata.DenomUnits[j] = &newDu
}
// validate metadata
if validity := metadata.Validate(); validity != nil {
return fmt.Errorf("invalid denom metadata on genesis event: %w", validity)
}
// save the new token denom metadata
if err := k.denommetadataKeeper.CreateDenomMetadata(ctx, metadata); err != nil {
return fmt.Errorf("create denom metadata: %w", err)
}
k.Logger(ctx).Info("registered denom metadata for IBC token", "rollappID", rollapp.RollappId, "denom", ibcBaseDenom)
}
return nil
}
func (k Keeper) mintRollappGenesisTokens(ctx sdk.Context, rollapp types.Rollapp) error {
for _, acc := range rollapp.GenesisState.GenesisAccounts {
ibcBaseDenom := utils.GetForeignDenomTrace(rollapp.ChannelId, acc.Amount.Denom).IBCDenom()
coinsToMint := sdk.NewCoins(sdk.NewCoin(ibcBaseDenom, acc.Amount.Amount))
if err := k.bankKeeper.MintCoins(ctx, types.ModuleName, coinsToMint); err != nil {
return fmt.Errorf("mint coins: %w", err)
}
accAddress, err := sdk.AccAddressFromBech32(acc.Address)
if err != nil {
return fmt.Errorf("convert account address: %w", err)
}
if err := k.bankKeeper.SendCoinsFromModuleToAccount(ctx, types.ModuleName, accAddress, coinsToMint); err != nil {
return fmt.Errorf("send coins to account: %w", err)
}
}
return nil
}
/* -------------------------------------------------------------------------- */
/* Hooks */
/* -------------------------------------------------------------------------- */
// Set the rollapp hooks
func (k *Keeper) SetHooks(sh types.MultiRollappHooks) {
if k.hooks != nil {
panic("cannot set rollapp hooks twice")
}
k.hooks = sh
}
func (k *Keeper) GetHooks() types.MultiRollappHooks {
return k.hooks
}