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