keystore watcher not release

[xinshengfan]

I init in a injector method ensure grpc client init one time,such as:
`func InitTronGRpc() (*client.GrpcClient, func(), error) {
cfg := config.C.TronGrid
opts := make([]grpc.DialOption, 0)
opts = append(opts, grpc.WithInsecure())

conn := client.NewGrpcClient(cfg.RPCHost)

if err := conn.Start(opts...); err != nil {
	_ = fmt.Errorf("Error connecting GRPC Client: %v \n", err)
}
cleanFunc := func() {
	conn.Stop()
}
err := conn.SetAPIKey(cfg.ApiGrpcKey)
if err != nil {
	logger.Errorf(context.Background(), "init GRPC Client error %v ", err)
	_ = fmt.Errorf("ini GRPC Client err: %v \n", err)
	return nil, cleanFunc, err
}
_, err = account.ImportFromPrivateKey(
	cfg.OperatorPrivateKey,
	cfg.OperatorName,
	cfg.OperatorPassword)
if err != nil {
	logger.Errorf(context.Background(), "import private key error %v ", err)
	_ = fmt.Errorf("import private key err: %v \n", err)
}
return conn, cleanFunc, nil

}
`

and I call UnlockedKeystore in a service ,
I found UnlockedKeystore not release watcher goroutine, cause memory is full

func (tron *TronOperator) SignatureExecuteTx(ctx context.Context, tx *api.TransactionExtention, err error) (string, error) { ks, acct, _ := store.UnlockedKeystore(config.C.TronGrid.OperatorAddress, config.C.TronGrid.OperatorPassword) ctrlr := transaction.NewController(tron.TronGrpc, ks, acct, tx.Transaction) if err = ctrlr.ExecuteTransaction(); err != nil { return "", err } txId := utils.BytesToNo0xHexString(tx.GetTxid()) return txId, err }

all goroutine keep in memory, like this

How to solve ?
Thanks!

[gpassing]

did u solve problem