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handler.go
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handler.go
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package hard
import (
sdk "github.com/cosmos/cosmos-sdk/types"
sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
"github.com/kava-labs/kava/x/hard/keeper"
"github.com/kava-labs/kava/x/hard/types"
)
// NewHandler creates an sdk.Handler for hard messages
func NewHandler(k Keeper) sdk.Handler {
return func(ctx sdk.Context, msg sdk.Msg) (*sdk.Result, error) {
ctx = ctx.WithEventManager(sdk.NewEventManager())
switch msg := msg.(type) {
case types.MsgDeposit:
return handleMsgDeposit(ctx, k, msg)
case types.MsgWithdraw:
return handleMsgWithdraw(ctx, k, msg)
case types.MsgBorrow:
return handleMsgBorrow(ctx, k, msg)
case types.MsgRepay:
return handleMsgRepay(ctx, k, msg)
case types.MsgLiquidate:
return handleMsgLiquidate(ctx, k, msg)
default:
return nil, sdkerrors.Wrapf(sdkerrors.ErrUnknownRequest, "unrecognized %s message type: %T", ModuleName, msg)
}
}
}
func handleMsgDeposit(ctx sdk.Context, k keeper.Keeper, msg types.MsgDeposit) (*sdk.Result, error) {
err := k.Deposit(ctx, msg.Depositor, msg.Amount)
if err != nil {
return nil, err
}
ctx.EventManager().EmitEvent(
sdk.NewEvent(
sdk.EventTypeMessage,
sdk.NewAttribute(sdk.AttributeKeyModule, types.AttributeValueCategory),
sdk.NewAttribute(sdk.AttributeKeySender, msg.Depositor.String()),
),
)
return &sdk.Result{
Events: ctx.EventManager().Events(),
}, nil
}
func handleMsgWithdraw(ctx sdk.Context, k keeper.Keeper, msg types.MsgWithdraw) (*sdk.Result, error) {
err := k.Withdraw(ctx, msg.Depositor, msg.Amount)
if err != nil {
return nil, err
}
ctx.EventManager().EmitEvent(
sdk.NewEvent(
sdk.EventTypeMessage,
sdk.NewAttribute(sdk.AttributeKeyModule, types.AttributeValueCategory),
sdk.NewAttribute(sdk.AttributeKeySender, msg.Depositor.String()),
),
)
return &sdk.Result{
Events: ctx.EventManager().Events(),
}, nil
}
func handleMsgBorrow(ctx sdk.Context, k keeper.Keeper, msg types.MsgBorrow) (*sdk.Result, error) {
err := k.Borrow(ctx, msg.Borrower, msg.Amount)
if err != nil {
return nil, err
}
ctx.EventManager().EmitEvent(
sdk.NewEvent(
sdk.EventTypeMessage,
sdk.NewAttribute(sdk.AttributeKeyModule, types.AttributeValueCategory),
sdk.NewAttribute(sdk.AttributeKeySender, msg.Borrower.String()),
),
)
return &sdk.Result{
Events: ctx.EventManager().Events(),
}, nil
}
func handleMsgRepay(ctx sdk.Context, k keeper.Keeper, msg types.MsgRepay) (*sdk.Result, error) {
err := k.Repay(ctx, msg.Sender, msg.Owner, msg.Amount)
if err != nil {
return nil, err
}
ctx.EventManager().EmitEvent(
sdk.NewEvent(
sdk.EventTypeMessage,
sdk.NewAttribute(sdk.AttributeKeyModule, types.AttributeValueCategory),
sdk.NewAttribute(sdk.AttributeKeySender, msg.Sender.String()),
),
)
return &sdk.Result{
Events: ctx.EventManager().Events(),
}, nil
}
func handleMsgLiquidate(ctx sdk.Context, k keeper.Keeper, msg types.MsgLiquidate) (*sdk.Result, error) {
err := k.AttemptKeeperLiquidation(ctx, msg.Keeper, msg.Borrower)
if err != nil {
return nil, err
}
ctx.EventManager().EmitEvent(
sdk.NewEvent(
sdk.EventTypeMessage,
sdk.NewAttribute(sdk.AttributeKeyModule, types.AttributeValueCategory),
sdk.NewAttribute(sdk.AttributeKeySender, msg.Keeper.String()),
),
)
return &sdk.Result{
Events: ctx.EventManager().Events(),
}, nil
}