比如说,在我的应用程序中,我维护了几个Kodein上下文,在Kodein上下文中有一些共享资源,当它所属的上下文不再需要时,我想结束这些资源。
以下是这个问题的简单说明:
class SomeConnectionPool: Closeable {
override fun close() { /* some operation */ }
}
class SomeResource: Closeable {
override fun close() { /* some operation */ }
}
class SomeService(val pool: SomeConnectionPool) {
fun doStuff() { /* some operation */ }
}
class SomeOtherService(val pool: SomeConnectionPool) {
fun doOtherStuff() { /* some operation */ }
}
val kodein = Kodein {
bind<SomeConnectionPool>() with singleton { SomeConnectionPool() }
bind<SomeResource>() with singleton { SomeResource() }
bind<SomeService>() with singleton { SomeService(instance()) }
bind<SomeOtherService>() with singleton { SomeOtherService(instance()) }
}
fun main(args: Array<String>) {
val service: SomeService by kodein.instance()
service.doStuff()
// this will initialize everything even the unused bindings
val resources by kodein.allInstances<Closeable>()
resources.forEach { it.close() }
}理想情况下,应该实现以下几个特性:
SomeService和SomeOtherService不应该负责关闭SomeConnectionPool,因为它们没有创建实例。他们也不知道池是否还在被其他东西使用。我还考虑只从kodein.container检索初始化的绑定,但似乎没有明显的方法可以这样做。
发布于 2018-06-22 11:20:58
科迪因5.1有你的报道吗。
看一下:
https://stackoverflow.com/questions/50973181
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