如何在Guice注入中使用Guava ServiceManager [英] How to use Guava ServiceManager with Guice Injection

问题描述

如此处所述，可以通过

ServiceManager manager = injector.getInstance(ServiceManager.class);

为完成这项工作，我在Guice模块中添加了以下内容:

To make this work, I added the following in my Guice module:

@Provides
public Set<Service> services(){
    return ImmutableSet.<Service>of(MyService());
}

在我的主班上，

ServiceManager manager = injector.getInstance(ServiceManager.class);
manager.startAsync().awaitHealthy();

如何获取已启动服务的实例?

How do I get instances of the started services?

p.s.将服务设置为@Singleton感觉很容易.

p.s. Setting the services to be @Singleton feels like a hack.

推荐答案

在我看来，将服务设置为@Singleton根本不是黑客.那可能就是我要做的.

In my opinion, setting the services to be @Singleton isn't a hack at all. That's probably what I'd do.

@Provides @Singleton
public MyService myService() {
  return new MyService();
}

@Provides
public Set<Service> services(MyService myService) {
  return ImmutableSet.<Service>of(myService);
}

然后，您可以将所需的任何特定服务实例注入所需的任何位置.

Then you can just inject any particular service instance you want anywhere you want.

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