OSGi 声明式服务与 ManagedService 用于配置服务？
我最近偶然发现 OSGi 中的声明式服务可以将组件的配置设置为必需的，以便组件在激活时接收它，从而消除组件激活和配置之间的差距。我还意识到您可以通过修改的方法接收配置更新。
在我看来，此功能与通过实现 ManagedService 接口并将其发布为您提供的“服务”之一所提供的功能非常相似。
看来我可以完全忽略 ManagedService &只需使用 DS 配置注入即可。
这些技术中的一种是否优于另一种，或者是否存在我没有看到的其他权衡？
I just recently stumbled upon the fact that Declarative Services in OSGi can set the configuration of a component to required so that the component receives it upon activation, removing the gap between component activation and configuration. I also realized with this that you can receive configuration updates via the modified-method.
It seems to me like this functionality is quite similar to that provided by implementing the ManagedService interface and publishing that as one of the "services" you provide.
It seems like I could completely ignore ManagedService & just use the DS configuration injection.
Is one of these techniques preferred over the other or are there other trade-offs that I'm not seeing?
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是的，您可以完全忽略
ManagedService和ManagedServiceFactory并仅使用声明式服务组件。是的，我会推荐这种方法。只需将其视为不同的抽象级别即可。 MS/MSF 是配置管理的低级 API，即使您没有运行 DS 捆绑包，它也可用。这样做的优点是您可以编写可配置的服务，而无需依赖 DS，这对于某些“系统级”组件来说可能是理想的。
然而，如果您愿意依赖 DS，例如“应用程序级”组件，那么使用 DS 与配置管理的内置集成将使您的生活变得更加轻松。
Yes, you can completely ignore
ManagedServiceandManagedServiceFactoryand just use Declarative Services components. And yes I would recommend this approach.Just think of this as different levels of abstraction. MS/MSF is the low-level API for config admin, and it is available even when you don't have a DS bundle running. The advantage of this is you can write configurable services without having a dependency on DS, which may be desirable for certain "system level" components.
However, if you are happy to depend on DS, e.g. for "application level" components, then using DS's built-in integration with config admin will make your life a lot easier.
几个建筑的例子
声明式服务
工厂：
1）通过 配置管理
:
胡萝卜-osgi-scr-factory-cm 2
）通过组件工厂
:
胡萝卜-osgi-scr-factory-ds
查看用例测试；
couple of examples of building
declarative services
factories:
1) via config admin
:
carrot-osgi-scr-factory-cm
2) via component factory
:
carrot-osgi-scr-factory-ds
take a look on tests for use cases;