package cdp import ( sdk "github.com/cosmos/cosmos-sdk/types" sdkerrors "github.com/cosmos/cosmos-sdk/types/errors" ) // NewHandler creates an sdk.Handler for cdp messages func NewHandler(k Keeper) sdk.Handler { return func(ctx sdk.Context, msg sdk.Msg) (*sdk.Result, error) { switch msg := msg.(type) { case MsgCreateCDP: return handleMsgCreateCDP(ctx, k, msg) case MsgDeposit: return handleMsgDeposit(ctx, k, msg) case MsgWithdraw: return handleMsgWithdraw(ctx, k, msg) case MsgDrawDebt: return handleMsgDrawDebt(ctx, k, msg) case MsgRepayDebt: return handleMsgRepayDebt(ctx, k, msg) default: return nil, sdkerrors.Wrapf(sdkerrors.ErrUnknownRequest, "unrecognized %s message type: %T", ModuleName, msg) } } } func handleMsgCreateCDP(ctx sdk.Context, k Keeper, msg MsgCreateCDP) (*sdk.Result, error) { err := k.AddCdp(ctx, msg.Sender, msg.Collateral, msg.Principal) if err != nil { return nil, err } ctx.EventManager().EmitEvent( sdk.NewEvent( sdk.EventTypeMessage, sdk.NewAttribute(sdk.AttributeKeyModule, AttributeValueCategory), sdk.NewAttribute(sdk.AttributeKeySender, msg.Sender.String()), ), ) id, _ := k.GetCdpID(ctx, msg.Sender, msg.Collateral.Denom) return &sdk.Result{ Data: GetCdpIDBytes(id), Events: ctx.EventManager().Events(), }, nil } func handleMsgDeposit(ctx sdk.Context, k Keeper, msg MsgDeposit) (*sdk.Result, error) { err := k.DepositCollateral(ctx, msg.Owner, msg.Depositor, msg.Collateral) if err != nil { return nil, err } ctx.EventManager().EmitEvent( sdk.NewEvent( sdk.EventTypeMessage, sdk.NewAttribute(sdk.AttributeKeyModule, AttributeValueCategory), sdk.NewAttribute(sdk.AttributeKeySender, msg.Depositor.String()), ), ) return &sdk.Result{Events: ctx.EventManager().Events()}, nil } func handleMsgWithdraw(ctx sdk.Context, k Keeper, msg MsgWithdraw) (*sdk.Result, error) { err := k.WithdrawCollateral(ctx, msg.Owner, msg.Depositor, msg.Collateral) if err != nil { return nil, err } ctx.EventManager().EmitEvent( sdk.NewEvent( sdk.EventTypeMessage, sdk.NewAttribute(sdk.AttributeKeyModule, AttributeValueCategory), sdk.NewAttribute(sdk.AttributeKeySender, msg.Depositor.String()), ), ) return &sdk.Result{Events: ctx.EventManager().Events()}, nil } func handleMsgDrawDebt(ctx sdk.Context, k Keeper, msg MsgDrawDebt) (*sdk.Result, error) { err := k.AddPrincipal(ctx, msg.Sender, msg.CdpDenom, msg.Principal) if err != nil { return nil, err } ctx.EventManager().EmitEvent( sdk.NewEvent( sdk.EventTypeMessage, sdk.NewAttribute(sdk.AttributeKeyModule, AttributeValueCategory), sdk.NewAttribute(sdk.AttributeKeySender, msg.Sender.String()), ), ) return &sdk.Result{Events: ctx.EventManager().Events()}, nil } func handleMsgRepayDebt(ctx sdk.Context, k Keeper, msg MsgRepayDebt) (*sdk.Result, error) { err := k.RepayPrincipal(ctx, msg.Sender, msg.CdpDenom, msg.Payment) if err != nil { return nil, err } ctx.EventManager().EmitEvent( sdk.NewEvent( sdk.EventTypeMessage, sdk.NewAttribute(sdk.AttributeKeyModule, AttributeValueCategory), sdk.NewAttribute(sdk.AttributeKeySender, msg.Sender.String()), ), ) return &sdk.Result{Events: ctx.EventManager().Events()}, nil }