com.kinglcc.spring.jms.core.listener.MethodJmsFilterListenerAdapter.java Source code

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Here is the source code for com.kinglcc.spring.jms.core.listener.MethodJmsFilterListenerAdapter.java

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/*
 * Copyright 2016 the original author or authors.
 *
 * 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.kinglcc.spring.jms.core.listener;

import java.util.ArrayList;
import java.util.List;

import javax.jms.JMSException;
import javax.jms.Session;

import org.apache.commons.lang.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.BeanFactory;
import org.springframework.beans.factory.BeanFactoryAware;
import org.springframework.jms.listener.adapter.MessagingMessageListenerAdapter;
import org.springframework.messaging.handler.invocation.InvocableHandlerMethod;

import com.kinglcc.spring.jms.JmsException;
import com.kinglcc.spring.jms.filter.JmsFilter;
import com.kinglcc.spring.jms.filter.MessageFilter;

/**
 * MethodJmsListenerAdapter
 * <pre>
 * A {@link javax.jms.MessageListener} adapter that invokes a configurable
 * {@link InvocableHandlerMethod}.
 * Include some {@link MessageFilter}, that can filter useless message don't been handled.
 * </pre>
 *
 * @author liaochaochao
 * @since 2016126 ?2:18:29
 */
public class MethodJmsFilterListenerAdapter extends MessagingMessageListenerAdapter implements BeanFactoryAware {

    private static final Logger LOGGER = LoggerFactory.getLogger(MethodJmsFilterListenerAdapter.class);

    private List<MessageFilter> filters = new ArrayList<MessageFilter>();
    private BeanFactory beanFactory;

    public void setHandlerMethod(InvocableHandlerMethod handlerMethod) {
        super.setHandlerMethod(handlerMethod);
        JmsFilter jmsFilter = handlerMethod.getMethodAnnotation(JmsFilter.class);
        if (null != jmsFilter) {
            for (String fn : jmsFilter.value()) {
                filters.add(resolveMessageFilter(fn));
            }
        }
    }

    private MessageFilter resolveMessageFilter(String filterName) {
        MessageFilter filter = null;
        if (StringUtils.isNotBlank(filterName)) {
            filter = beanFactory.getBean(filterName, MessageFilter.class);
        }
        if (null == filter) {
            throw new JmsException(String.format("NOT FOUND the filter named (%s)", filterName));
        }
        return filter;
    }

    @Override
    public void onMessage(javax.jms.Message jmsMessage, Session session) throws JMSException {
        for (MessageFilter filter : filters) {
            if (!filter.doFilter(jmsMessage, session)) {
                LOGGER.debug("Reject the message {} because it has already resolved!",
                        jmsMessage.getJMSMessageID());
                return;
            }
        }
        super.onMessage(jmsMessage, session);
    }

    @Override
    public void setBeanFactory(BeanFactory beanFactory) throws BeansException {
        this.beanFactory = beanFactory;
    }

}