/
redeem_stake.go
80 lines (65 loc) · 2.77 KB
/
redeem_stake.go
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package keeper
import (
"fmt"
errorsmod "cosmossdk.io/errors"
sdkmath "cosmossdk.io/math"
sdk "github.com/cosmos/cosmos-sdk/types"
transfertypes "github.com/cosmos/ibc-go/v7/modules/apps/transfer/types"
channeltypes "github.com/cosmos/ibc-go/v7/modules/core/04-channel/types"
"github.com/Stride-Labs/stride/v21/x/autopilot/types"
stakeibckeeper "github.com/Stride-Labs/stride/v21/x/stakeibc/keeper"
stakeibctypes "github.com/Stride-Labs/stride/v21/x/stakeibc/types"
)
func (k Keeper) TryRedeemStake(
ctx sdk.Context,
packet channeltypes.Packet,
transferPacketData transfertypes.FungibleTokenPacketData,
autopilotMetadata types.StakeibcPacketMetadata,
) error {
params := k.GetParams(ctx)
if !params.StakeibcActive {
return fmt.Errorf("packet forwarding param is not active")
}
// At this point in the stack, the denom's in the packet data appear as they existed on the sender zone,
// but as a denom trace instead of a hash
// Meaning, for native stTokens, the port and channel on the host zone are part of the denom
// (e.g. transfer/{channel-on-hub}/stuatom)
// Only stride native stTokens can be redeemed, so we confirm that the denom's prefix matches
// the packet's "source" channel (i.e. the channel on the host zone)
if !transfertypes.ReceiverChainIsSource(packet.GetSourcePort(), packet.GetSourceChannel(), transferPacketData.Denom) {
return fmt.Errorf("the ibc token %s is not supported for redeem stake", transferPacketData.Denom)
}
voucherPrefix := transfertypes.GetDenomPrefix(packet.GetSourcePort(), packet.GetSourceChannel())
stAssetDenom := transferPacketData.Denom[len(voucherPrefix):]
if !k.stakeibcKeeper.CheckIsStToken(ctx, stAssetDenom) {
return fmt.Errorf("not a liquid staking token")
}
hostZoneDenom := stakeibctypes.HostZoneDenomFromStAssetDenom(stAssetDenom)
amount, ok := sdk.NewIntFromString(transferPacketData.Amount)
if !ok {
return fmt.Errorf("not a parsable amount field")
}
strideAddress := transferPacketData.Receiver
redemptionReceiver := autopilotMetadata.IbcReceiver
return k.RunRedeemStake(ctx, strideAddress, redemptionReceiver, hostZoneDenom, amount)
}
func (k Keeper) RunRedeemStake(ctx sdk.Context, strideAddress string, redemptionReceiver string, hostZoneDenom string, amount sdkmath.Int) error {
hostZone, err := k.stakeibcKeeper.GetHostZoneFromHostDenom(ctx, hostZoneDenom)
if err != nil {
return err
}
msg := &stakeibctypes.MsgRedeemStake{
Creator: strideAddress,
Amount: amount,
HostZone: hostZone.ChainId,
Receiver: redemptionReceiver,
}
if err := msg.ValidateBasic(); err != nil {
return err
}
msgServer := stakeibckeeper.NewMsgServerImpl(k.stakeibcKeeper)
if _, err = msgServer.RedeemStake(sdk.WrapSDKContext(ctx), msg); err != nil {
return errorsmod.Wrapf(err, "redeem stake failed")
}
return nil
}