chore: add event for register counterparty (#7556)

modules/core/04-channel/v2/keeper/events.go

@@ -49,3 +49,21 @@ func (*Keeper) emitCreateChannelEvent(ctx context.Context, channelID, clientID s
 		),
 	})
 }
+
+// emitRegisterCounterpartyEvent emits a register counterparty event.
+func (*Keeper) emitRegisterCounterpartyEvent(ctx context.Context, channelID string, channel types.Channel) {
+	sdkCtx := sdk.UnwrapSDKContext(ctx)
+
+	sdkCtx.EventManager().EmitEvents(sdk.Events{
+		sdk.NewEvent(
+			types.EventTypeRegisterCounterparty,
+			sdk.NewAttribute(types.AttributeKeyChannelID, channelID),
+			sdk.NewAttribute(types.AttributeKeyClientID, channel.ClientId),
+			sdk.NewAttribute(types.AttributeKeyCounterpartyChannelID, channel.CounterpartyChannelId),
+		),
+		sdk.NewEvent(
+			sdk.EventTypeMessage,
+			sdk.NewAttribute(sdk.AttributeKeyModule, types.AttributeValueCategory),
+		),
+	})
+}

modules/core/04-channel/v2/keeper/msg_server.go

@@ -57,6 +57,8 @@ func (k *Keeper) RegisterCounterparty(goCtx context.Context, msg *types.MsgRegis
 	// Delete client creator from state as it is not needed after this point.
 	k.DeleteCreator(ctx, msg.ChannelId)
 
+	k.emitRegisterCounterpartyEvent(goCtx, msg.ChannelId, channel)
+
 	return &types.MsgRegisterCounterpartyResponse{}, nil
 }
 

modules/core/04-channel/v2/types/events.go

@@ -8,13 +8,15 @@ import (
 
 // IBC channel events
 const (
-	AttributeKeyChannelID = "channel_id"
-	AttributeKeyClientID  = "client_id"
+	AttributeKeyChannelID             = "channel_id"
+	AttributeKeyClientID              = "client_id"
+	AttributeKeyCounterpartyChannelID = "counterparty_channel_id"
 )
 
 // IBC channel events vars
 var (
-	EventTypeCreateChannel = "create_channel"
+	EventTypeCreateChannel        = "create_channel"
+	EventTypeRegisterCounterparty = "register_counterparty"
 
 	AttributeValueCategory = fmt.Sprintf("%s_%s", ibcexported.ModuleName, SubModuleName)
 )