从初始化（）访问Dropwzo配置？

Question

我试图为Dropwizard创建一个调度作业，该作业每分钟运行一次，并查询数据库中的值。

为此，我需要在< code>initialize()阶段注册一些Dao和一个服务，如下所示:

@Override
public void initialize(final Bootstrap<KMDServiceConfiguration> bootstrap) {

    //JDBI
    final DBIFactory factory = new DBIFactory();
    final DateTimeArgumentFactory dateTimeFactory = new DateTimeArgumentFactory();
    final DBI jdbi = factory
            .build(environment, config.getDataSourceFactory(), "kmd");
    jdbi.registerArgumentFactory(dateTimeFactory);

    //DAOs
    final UserDao userDao = jdbi.onDemand(UserDao.class);
    final NotificationDao notificationDao = jdbi.onDemand(NotificationDao.class);

    //Domain services
    final UserService userService = new UserServiceImpl(userDao);
    final NotificationService notificationService = new NotificationServiceImpl(notificationDao);

    final MessageService messageService = new MessageServiceImpl(userService, notificationService);


    final Job worker= new MessageWorker(messageService);
    bootstrap.addBundle(new JobsBundle(worker));

JDBI需要Dropw的环境和配置对象。

是否可以在这个阶段访问这些，以便正确设置我的依赖项？

Answer 1

您应该能够从 DW 应用程序类中的“run”方法初始化作业，该方法有权访问配置和环境属性。我整理了一个简单的项目来展示这一点，但这就是运行方法的样子：

@Override
public void run(SOQ49638642Configuration configuration, Environment environment) throws Exception {

    final DBI dbi = (new DBIFactory()).build(environment, configuration.getDataSourceFactory(), "kmd");

    final SOQ49638642Job soq49638642Job = new SOQ49638642Job(new SOQ49638642Service(dbi.onDemand(SOQ49638642Dao.class)));

    final JobsBundle jobsBundle = new JobsBundle(soq49638642Job);

    jobsBundle.run(configuration, environment);
}

据我所知，不可能在“初始化”阶段获取这些对象。您还可以查看类似dropwizard guicey的DW的Guice集成，它为DW中的捆绑包和模块的DI提供了很好的机制。