James3 를 기존 메일시스템과 연동하기 - 시작

James 3 에서 제공하는 mailbox 는 jpa, jcr, maildir, hbase, memory 입니다.

기존에 사용하던 메일 시스템의 DB, Filesystem 과 연동을 위해서는 커스터마이징이 필수적입니다.

org.apache.james.container.spring.bean.factorypostprocessor.MailboxConfigurationBeanFactoryPostProcessor

<br/> /****************************************************************<br/> * Licensed to the Apache Software Foundation (ASF) under one *<br/> * or more contributor license agreements. See the NOTICE file *<br/> * distributed with this work for additional information *<br/> * regarding copyright ownership. The ASF licenses this file *<br/> * to you under the Apache License, Version 2.0 (the *<br/> * "License"); you may not use this file except in compliance *<br/> * with the License. You may obtain a copy of the License at *<br/> * *<br/> * http://www.apache.org/licenses/LICENSE-2.0 *<br/> * *<br/> * Unless required by applicable law or agreed to in writing, *<br/> * software distributed under the License is distributed on an *<br/> * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY *<br/> * KIND, either express or implied. See the License for the *<br/> * specific language governing permissions and limitations *<br/> * under the License. *<br/> ****************************************************************/<br/><br/>package org.apache.james.container.spring.bean.factorypostprocessor;<br/><br/>import org.apache.commons.configuration.ConfigurationException;<br/>import org.apache.commons.configuration.HierarchicalConfiguration;<br/>import org.apache.james.container.spring.lifecycle.ConfigurationProvider;<br/>import org.springframework.beans.BeansException;<br/>import org.springframework.beans.FatalBeanException;<br/>import org.springframework.beans.factory.config.BeanFactoryPostProcessor;<br/>import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;<br/>import org.springframework.beans.factory.support.BeanDefinitionRegistry;<br/><br/>/**<br/> * Read mailbox.xml file and register the right bean alias in the<br/> * {@link BeanDefinitionRegistry} depending on the configured provider. As<br/> * default jpa is used!<br/> * <br/> * It will register it with the alias mailboxmanager<br/> */<br/>public class MailboxConfigurationBeanFactoryPostProcessor implements BeanFactoryPostProcessor {<br/><br/> /**<br/> * @see org.springframework.beans.factory.config.BeanFactoryPostProcessor#postProcessBeanFactory<br/> * (org.springframework.beans.factory.config.ConfigurableListableBeanFactory)<br/> */<br/> public void postProcessBeanFactory(ConfigurableListableBeanFactory beanFactory) throws BeansException {<br/> ConfigurationProvider confProvider = beanFactory.getBean(ConfigurationProvider.class);<br/> try {<br/> HierarchicalConfiguration config = confProvider.getConfiguration("mailbox");<br/> String provider = config.getString("provider", "jpa");<br/><br/> BeanDefinitionRegistry registry = (BeanDefinitionRegistry) beanFactory;<br/> String mailbox = null;<br/> String subscription = null;<br/> if (provider.equalsIgnoreCase("jpa")) {<br/> mailbox = "jpa-mailboxmanager";<br/> subscription = "jpa-subscriptionManager";<br/> } else if (provider.equalsIgnoreCase("memory")) {<br/> mailbox = "memory-mailboxmanager";<br/> subscription = "memory-subscriptionManager";<br/> } else if (provider.equalsIgnoreCase("jcr")) {<br/> mailbox = "jcr-mailboxmanager";<br/> subscription = "jcr-subscriptionManager";<br/> } else if (provider.equalsIgnoreCase("maildir")) {<br/> mailbox = "maildir-mailboxmanager";<br/> subscription = "maildir-subscriptionManager";<br/> } else if (provider.equalsIgnoreCase("hbase")) {<br/> mailbox = "hbase-mailboxmanager";<br/> subscription = "hbase-subscriptionManager";<br/> }<br/><br/> if (mailbox == null)<br/> throw new ConfigurationException("Mailboxmanager provider " + provider + " not supported!");<br/> registry.registerAlias(mailbox, "mailboxmanager");<br/> registry.registerAlias(subscription, "subscriptionManager");<br/><br/> } catch (ConfigurationException e) {<br/> throw new FatalBeanException("Unable to config the mailboxmanager", e);<br/> }<br/><br/> }<br/><br/>}<br/>

위의 클래스에서 jdbc 용 provider 를 확장하는게 첫 시작점이 될 것 같습니다.

각 provider 별 spring.xml 은 아래 xml 에 import 시켜서 사용합니다.

/apache-james-mailbox/spring/src/main/resources/META-INF/org/apache/james/spring-mailbox.xml