service_example.go

service_example.go

package main

type MyService struct {
	dbConnection *sql.DB
	logger       log.Logger
	service1     *Service1
	service2     *Service2
}

func NewMyService(
	dbConnection *sql.DB,
	logger log.Logger,
	service1 *Service1,
	service2 *Service2,
) (*MyService, error) {
	// validation here

	return &MyService{
		dbConnection: dbConnection,
		logger:       logger,
		service1:     service1,
		service2:     service2,
	}, nil
}

func (m *MyService) Handler(...) {
	//...
}