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ibc_transfer.go
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ibc_transfer.go
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package keeper
import (
"encoding/hex"
"fmt"
sdk "github.com/cosmos/cosmos-sdk/types"
ibcclienttypes "github.com/cosmos/ibc-go/v3/modules/core/02-client/types"
"github.com/ethereum/go-ethereum/common"
fxtypes "github.com/functionx/fx-core/v2/types"
"github.com/functionx/fx-core/v2/x/crosschain/types"
)
var targetEvmPrefix = hex.EncodeToString([]byte("module/evm"))
func (k Keeper) handlerRelayTransfer(ctx sdk.Context, claim *types.MsgSendToFxClaim, receiver sdk.AccAddress, coin sdk.Coin) {
// convert denom
if ctx.BlockHeight() >= fxtypes.UpgradeExponential1Block() {
coin = k.handlerConvertDenom(ctx, claim, receiver, coin)
}
// router evm condition
// 1. target == module/evm
// 2. before block + isTestnet + target empty + denom != FX
evmTarget := claim.TargetIbc == targetEvmPrefix
beforeBlock := ctx.BlockHeight() < fxtypes.UpgradeExponential1Block()
isTestnet := fxtypes.ChainId() == fxtypes.TestnetChainId
emptyTarget := claim.TargetIbc == ""
notDefaultDenom := coin.Denom != fxtypes.DefaultDenom
if evmTarget || (beforeBlock && isTestnet && emptyTarget && notDefaultDenom) {
k.handlerEvmTransfer(ctx, claim, receiver, coin)
return
}
k.handleIbcTransfer(ctx, claim, receiver, coin)
}
func (k Keeper) handleIbcTransfer(ctx sdk.Context, claim *types.MsgSendToFxClaim, receiveAddr sdk.AccAddress, coin sdk.Coin) {
logger := k.Logger(ctx)
targetIBC, ok := fxtypes.ParseHexTargetIBC(claim.TargetIbc)
if !ok {
logger.Error("convert target ibc data error!!!", "targetIbc", claim.GetTargetIbc())
return
}
ibcReceiveAddress, err := types.CovertIbcPacketReceiveAddressByPrefix(targetIBC.Prefix, receiveAddr)
if err != nil {
logger.Error("convert ibc transfer receive address error!!!", "fxReceive", claim.Receiver,
"ibcPrefix", targetIBC.Prefix, "sourcePort", targetIBC.SourcePort, "sourceChannel", targetIBC.SourceChannel, "error", err)
return
}
_, clientState, err := k.ibcChannelKeeper.GetChannelClientState(ctx, targetIBC.SourcePort, targetIBC.SourceChannel)
if err != nil {
logger.Error("get channel client state error!!!", "sourcePort", targetIBC.SourcePort, "sourceChannel", targetIBC.SourceChannel)
return
}
ibcTransferTimeoutHeight := k.GetIbcTransferTimeoutHeight(ctx)
clientStateHeight := clientState.GetLatestHeight()
destTimeoutHeight := clientStateHeight.GetRevisionHeight() + ibcTransferTimeoutHeight
ibcTimeoutHeight := ibcclienttypes.Height{
RevisionNumber: clientStateHeight.GetRevisionNumber(),
RevisionHeight: destTimeoutHeight,
}
nextSequenceSend, found := k.ibcChannelKeeper.GetNextSequenceSend(ctx, targetIBC.SourcePort, targetIBC.SourceChannel)
if !found {
logger.Error("ibc channel next sequence send not found!!!", "sourcePort", targetIBC.SourcePort, "sourceChannel", targetIBC.SourceChannel)
return
}
logger.Info("crosschain start ibc transfer", "sender", receiveAddr, "receive", ibcReceiveAddress, "coin", coin, "destCurrentHeight", clientStateHeight.GetRevisionHeight(), "destTimeoutHeight", destTimeoutHeight, "nextSequenceSend", nextSequenceSend)
if err = k.ibcTransferKeeper.SendTransfer(ctx,
targetIBC.SourcePort, targetIBC.SourceChannel,
coin, receiveAddr, ibcReceiveAddress,
ibcTimeoutHeight, 0,
"", sdk.NewCoin(coin.Denom, sdk.ZeroInt())); err != nil {
logger.Error("crosschain ibc transfer fail", "sender", receiveAddr, "receive", ibcReceiveAddress, "coin", coin, "err", err)
return
}
ctx.EventManager().EmitEvent(sdk.NewEvent(
types.EventTypeIbcTransfer,
sdk.NewAttribute(sdk.AttributeKeyModule, k.moduleName),
sdk.NewAttribute(types.AttributeKeyEventNonce, fmt.Sprint(claim.EventNonce)),
sdk.NewAttribute(types.AttributeKeyIbcSendSequence, fmt.Sprint(nextSequenceSend)),
sdk.NewAttribute(types.AttributeKeyIbcSourcePort, targetIBC.SourcePort),
sdk.NewAttribute(types.AttributeKeyIbcSourceChannel, targetIBC.SourceChannel),
))
}
func (k Keeper) handlerEvmTransfer(ctx sdk.Context, claim *types.MsgSendToFxClaim, receiver sdk.AccAddress, coin sdk.Coin) {
logger := k.Logger(ctx)
receiverEthType := common.BytesToAddress(receiver.Bytes())
logger.Info("convert denom to fip20", "sender", claim.Sender, "receiver", claim.Receiver,
"receiver-eth-type", receiverEthType.String(), "amount", coin.String(), "target", claim.TargetIbc)
err := k.erc20Keeper.RelayConvertCoin(ctx, receiver, receiverEthType, coin)
if err != nil {
logger.Error("evm transfer, convert denom to fip20 failed", "error", err.Error())
return
}
ctx.EventManager().EmitEvent(sdk.NewEvent(
types.EventTypeEvmTransfer,
sdk.NewAttribute(sdk.AttributeKeyModule, k.moduleName),
sdk.NewAttribute(types.AttributeKeyEventNonce, fmt.Sprint(claim.EventNonce)),
))
}
func (k Keeper) handlerConvertDenom(ctx sdk.Context, claim *types.MsgSendToFxClaim, receiver sdk.AccAddress, coin sdk.Coin) sdk.Coin {
logger := k.Logger(ctx)
logger.Info("convert denom symbol", "address", receiver.String(), "coin", coin.String())
cacheCtx, commit := ctx.CacheContext()
targetCoin, err := k.erc20Keeper.RelayConvertDenomToOne(cacheCtx, receiver, coin)
if err != nil {
logger.Error("convert denom symbol", "address", receiver.String(), "coin", coin.String(), "error", err.Error())
//if convert err, return default coin
return coin
}
commit()
logger.Info("convert denom symbol", "address", receiver.String(), "coin", coin.String(), "target", targetCoin.String(), "module", k.moduleName)
return targetCoin
}