80 lines
2.1 KiB
Go
80 lines
2.1 KiB
Go
package bank
|
|
|
|
import (
|
|
sdk "github.com/cosmos/cosmos-sdk/types"
|
|
sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
|
|
"github.com/cosmos/cosmos-sdk/x/bank/keeper"
|
|
"github.com/cosmos/cosmos-sdk/x/bank/types"
|
|
)
|
|
|
|
// NewHandler returns a handler for "bank" type messages.
|
|
func NewHandler(k keeper.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.MsgSend:
|
|
return handleMsgSend(ctx, k, msg)
|
|
|
|
case types.MsgMultiSend:
|
|
return handleMsgMultiSend(ctx, k, msg)
|
|
|
|
default:
|
|
return nil, sdkerrors.Wrapf(sdkerrors.ErrUnknownRequest, "unrecognized bank message type: %T", msg)
|
|
}
|
|
}
|
|
}
|
|
|
|
// Handle MsgSend.
|
|
func handleMsgSend(ctx sdk.Context, k keeper.Keeper, msg types.MsgSend) (*sdk.Result, error) {
|
|
if !k.GetSendEnabled(ctx) {
|
|
return nil, types.ErrSendDisabled
|
|
}
|
|
|
|
if k.BlacklistedAddr(msg.ToAddress) {
|
|
return nil, sdkerrors.Wrapf(sdkerrors.ErrUnauthorized, "%s is not allowed to receive transactions", msg.ToAddress)
|
|
}
|
|
|
|
err := k.SendCoins(ctx, msg.FromAddress, msg.ToAddress, msg.Amount)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
ctx.EventManager().EmitEvent(
|
|
sdk.NewEvent(
|
|
sdk.EventTypeMessage,
|
|
sdk.NewAttribute(sdk.AttributeKeyModule, types.AttributeValueCategory),
|
|
),
|
|
)
|
|
|
|
return &sdk.Result{Events: ctx.EventManager().Events()}, nil
|
|
}
|
|
|
|
// Handle MsgMultiSend.
|
|
func handleMsgMultiSend(ctx sdk.Context, k keeper.Keeper, msg types.MsgMultiSend) (*sdk.Result, error) {
|
|
// NOTE: totalIn == totalOut should already have been checked
|
|
if !k.GetSendEnabled(ctx) {
|
|
return nil, types.ErrSendDisabled
|
|
}
|
|
|
|
for _, out := range msg.Outputs {
|
|
if k.BlacklistedAddr(out.Address) {
|
|
return nil, sdkerrors.Wrapf(sdkerrors.ErrUnauthorized, "%s is not allowed to receive transactions", out.Address)
|
|
}
|
|
}
|
|
|
|
err := k.InputOutputCoins(ctx, msg.Inputs, msg.Outputs)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
ctx.EventManager().EmitEvent(
|
|
sdk.NewEvent(
|
|
sdk.EventTypeMessage,
|
|
sdk.NewAttribute(sdk.AttributeKeyModule, types.AttributeValueCategory),
|
|
),
|
|
)
|
|
|
|
return &sdk.Result{Events: ctx.EventManager().Events()}, nil
|
|
}
|