com.github.dynamicextensionsalfresco.policy.DefaultBehaviourProxyFactory.kt Maven / Gradle / Ivy

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Adds an OSGi container to alfresco repository supporting dynamic code reloading, classpath isolation and a bunch of other useful features

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package com.github.dynamicextensionsalfresco.policy

import com.github.dynamicextensionsalfresco.debug
import java.util.ArrayList

import com.github.dynamicextensionsalfresco.metrics.Timer
import org.alfresco.repo.policy.Behaviour
import org.slf4j.Logger
import org.slf4j.LoggerFactory
import org.springframework.beans.factory.annotation.Autowired
import org.springframework.context.ApplicationListener
import org.springframework.context.event.ContextClosedEvent

/**
 * Default [BehaviourProxyFactory] implementation intended for use in a Spring application context. This
 * implementation releases references to [Behaviour]s when the [ContextClosedEvent] occurs.

 * @author Laurens Fridael
 */
public class DefaultBehaviourProxyFactory @Autowired constructor(private val timer: Timer) : BehaviourProxyFactory, ApplicationListener {

    private val logger = LoggerFactory.getLogger(javaClass)

    /* State */

    private val behaviourProxies = ArrayList()

    /* Main operations */

    override fun createBehaviourProxy(behaviour: Behaviour): BehaviourProxy {
        logger.debug {
            "Creating BehaviourProxy for ${behaviour.javaClass.name} instance."
        }
        val behaviourProxy = BehaviourProxy(behaviour, timer)
        behaviourProxies.add(behaviourProxy)
        return behaviourProxy
    }

    /* Callback operations */

    override fun onApplicationEvent(event: ContextClosedEvent) {
        releaseBehaviourReferences()
    }

    /* Utility operations */

    protected fun releaseBehaviourReferences() {
        for (behaviourProxy in behaviourProxies) {
            logger.debug { "Releasing reference from BehaviourProxy to $behaviourProxy instance." }
            behaviourProxy.release()
        }
        behaviourProxies.clear()
    }

}