org.enodeframework.messaging.impl.QueuedHandler.kt Maven / Gradle / Ivy

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package org.enodeframework.messaging.impl

import org.enodeframework.common.function.Action2
import org.enodeframework.infrastructure.ObjectProxy
import java.util.concurrent.ConcurrentLinkedQueue

class QueuedHandler(handlers: List, dispatchToNextHandler: Action2, T>) {
    private val dispatchToNextHandler: Action2, T>
    private val handlerQueue: ConcurrentLinkedQueue = ConcurrentLinkedQueue()

    init {
        handlerQueue.addAll(handlers)
        this.dispatchToNextHandler = dispatchToNextHandler
    }

    fun dequeueHandler(): T {
        return handlerQueue.poll()
    }

    fun onHandlerFinished(handler: T) {
        val nextHandler = dequeueHandler()
        if (nextHandler != null) {
            dispatchToNextHandler.apply(this, nextHandler)
        }
    }
}