41 lines
1.2 KiB
Go
41 lines
1.2 KiB
Go
package transfer
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import (
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sdk "github.com/cosmos/cosmos-sdk/types"
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sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
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)
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// NewHandler returns sdk.Handler for IBC token transfer module messages
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func NewHandler(k Keeper) sdk.Handler {
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return func(ctx sdk.Context, msg sdk.Msg) (*sdk.Result, error) {
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switch msg := msg.(type) {
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case MsgTransfer:
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return handleMsgTransfer(ctx, k, msg)
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default:
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return nil, sdkerrors.Wrapf(sdkerrors.ErrUnknownRequest, "unrecognized ICS-20 transfer message type: %T", msg)
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}
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}
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}
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// See createOutgoingPacket in spec:https://github.com/cosmos/ics/tree/master/spec/ics-020-fungible-token-transfer#packet-relay
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func handleMsgTransfer(ctx sdk.Context, k Keeper, msg MsgTransfer) (*sdk.Result, error) {
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if err := k.SendTransfer(
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ctx, msg.SourcePort, msg.SourceChannel, msg.DestHeight, msg.Amount, msg.Sender, msg.Receiver,
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); err != nil {
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return nil, err
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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, AttributeValueCategory),
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sdk.NewAttribute(sdk.AttributeKeySender, msg.Sender.String()),
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sdk.NewAttribute(AttributeKeyReceiver, msg.Receiver),
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),
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)
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return &sdk.Result{
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Events: ctx.EventManager().Events().ToABCIEvents(),
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}, nil
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}
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