0g-chain/x/liquidator/handler.go
2019-11-25 14:46:02 -05:00

55 lines
1.7 KiB
Go

package liquidator
import (
"fmt"
sdk "github.com/cosmos/cosmos-sdk/types"
)
// Handle all liquidator messages.
func NewHandler(keeper Keeper) sdk.Handler {
return func(ctx sdk.Context, msg sdk.Msg) sdk.Result {
switch msg := msg.(type) {
case MsgSeizeAndStartCollateralAuction:
return handleMsgSeizeAndStartCollateralAuction(ctx, keeper, msg)
case MsgStartDebtAuction:
return handleMsgStartDebtAuction(ctx, keeper)
// case MsgStartSurplusAuction:
// return handleMsgStartSurplusAuction(ctx, keeper)
default:
errMsg := fmt.Sprintf("Unrecognized liquidator msg type: %T", msg)
return sdk.ErrUnknownRequest(errMsg).Result()
}
}
}
func handleMsgSeizeAndStartCollateralAuction(ctx sdk.Context, keeper Keeper, msg MsgSeizeAndStartCollateralAuction) sdk.Result {
_, err := keeper.SeizeAndStartCollateralAuction(ctx, msg.CdpOwner, msg.CollateralDenom)
if err != nil {
return err.Result()
}
return sdk.Result{} // TODO tags, return auction ID
}
func handleMsgStartDebtAuction(ctx sdk.Context, keeper Keeper) sdk.Result {
// cancel out any debt and stable coins before trying to start auction
keeper.SettleDebt(ctx)
// start an auction
_, err := keeper.StartDebtAuction(ctx)
if err != nil {
return err.Result()
}
return sdk.Result{} // TODO tags, return auction ID
}
// With no stability and liquidation fees, surplus auctions can never be run.
// func handleMsgStartSurplusAuction(ctx sdk.Context, keeper Keeper) sdk.Result {
// // cancel out any debt and stable coins before trying to start auction
// keeper.settleDebt(ctx)
// _, err := keeper.StartSurplusAuction(ctx)
// if err != nil {
// return err.Result()
// }
// return sdk.Result{} // TODO tags
// }