首页 > 解决方案 > 关闭/关闭 Kodein 上下文

问题描述

假设在我的应用程序中,我维护了一些 Kodein 上下文,并且 Kodein 上下文中有一些共享资源,当不再需要它所属的上下文时,我想关闭这些资源。

下面是问题的简单说明:

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,应该实现几个属性:

我还考虑只从 kodein.container 中检索已初始化的绑定,但似乎没有明显的方法可以这样做。

标签: kotlinkodein

解决方案



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