com.stormpath.shiro.spring.config.ShiroEventBusBeanPostProcessor.java Source code

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Here is the source code for com.stormpath.shiro.spring.config.ShiroEventBusBeanPostProcessor.java

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/*
 * Copyright 2012 Stormpath, Inc.
 *
 * 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.
 */
package com.stormpath.shiro.spring.config;

import org.apache.shiro.event.EventBus;
import org.apache.shiro.event.EventBusAware;
import org.apache.shiro.event.Subscribe;
import org.apache.shiro.util.ClassUtils;
import org.apache.shiro.util.CollectionUtils;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.config.BeanPostProcessor;

import java.util.List;

public class ShiroEventBusBeanPostProcessor implements BeanPostProcessor {

    final private EventBus eventBus;

    public ShiroEventBusBeanPostProcessor(EventBus eventBus) {
        this.eventBus = eventBus;
    }

    @Override
    public Object postProcessBeforeInitialization(Object bean, String beanName) throws BeansException {
        return bean;
    }

    @Override
    public Object postProcessAfterInitialization(Object bean, String beanName) throws BeansException {
        if (bean instanceof EventBusAware) {
            ((EventBusAware) bean).setEventBus(eventBus);
        } else if (isEventSubscriber(bean)) {
            eventBus.register(bean);
        }

        return bean;
    }

    private boolean isEventSubscriber(Object bean) {
        List annotatedMethods = ClassUtils.getAnnotatedMethods(bean.getClass(), Subscribe.class);
        return !CollectionUtils.isEmpty(annotatedMethods);
    }

}