com.javacreed.examples.akka.internal.SpringActorProducer.java Source code

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Here is the source code for com.javacreed.examples.akka.internal.SpringActorProducer.java

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/*
 * #%L
 * Running AKKA on Virgo
 * %%
 * Copyright (C) 2012 - 2015 Java Creed
 * %%
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * #L%
 */
package com.javacreed.examples.akka.internal;

import java.util.Objects;

import org.springframework.context.ApplicationContext;

import akka.actor.Actor;
import akka.actor.IndirectActorProducer;

/**
 * An actor producer that lets Spring create the Actor instances.
 * 
 * Based on:
 * https://github.com/typesafehub/activator-akka-java-spring/blob/master/src/main/java/sample/SpringActorProducer.java
 */
public class SpringActorProducer implements IndirectActorProducer {

    /** The spring application context (which will not be {@code null}) */
    private final ApplicationContext applicationContext;

    /** The actor bean name (which will not be {@code null}) */
    private final String actorBeanName;

    /**
     * 
     * @param applicationContext
     *          the spring application context (which will not be {@code null})
     * @param actorBeanName
     *          the actor bean name (which will not be {@code null})
     * @throws NullPointerException
     *           if any of the parameters is {@code null}
     */
    public SpringActorProducer(final ApplicationContext applicationContext, final String actorBeanName)
            throws NullPointerException {
        this.applicationContext = Objects.requireNonNull(applicationContext);
        this.actorBeanName = Objects.requireNonNull(actorBeanName);
    }

    @Override
    public Class<? extends Actor> actorClass() {
        @SuppressWarnings("unchecked")
        final Class<? extends Actor> t = (Class<? extends Actor>) applicationContext.getType(actorBeanName);
        return t;
    }

    @Override
    public Actor produce() {
        return applicationContext.getBean(actorBeanName, Actor.class);
    }

}