分布式Hibernate search詳解

更新時(shí)間：2017年10月20日 11:27:29 作者：liuyazhuang

這篇文章主要介紹了分布式Hibernate search的相關(guān)內(nèi)容，小編覺(jué)得挺不錯(cuò)的，這里分享給大家，供需要的朋友參考。

分布式Hibernate Search與Apache Tomcat6,ActiveMQ 和Spring.今天我將跟大家分享我的經(jīng)驗(yàn)，以master/slave(s)方式配置分布式Hibernate Search并整合Apache ActiveMQ,Spring,應(yīng)用程序額容器是Apache Tomcat 6。

怎么工作：

-Hibernate Search 支持使用JMS back-end 和 master/slave(s) 索引進(jìn)行分布式配置
- mater通過(guò)網(wǎng)絡(luò)共享暴露索引（例如通過(guò)NFS。。。）
- slave(s) 復(fù)制mater的索引到本地

版本

- Apache Tomcat 6.0.20
- Hibernate Search 3.1.1 GA
- Apache ActiveMQ 5.3.0
- Spring 2.5.6
- XBean-Spring 3.6
${local.index.dir} - directory to store master index
${master.index.dir} - directory to copy master index to, it's shared network location for replication with slave(s)

Mater索引的配置

Mater的配置稍顯復(fù)雜。以下是配置屬性說(shuō)明
$(local.index.dir) - 存儲(chǔ)mater索引的目錄
$(master.index.dir) -拷貝mater索引的目標(biāo)目錄，通過(guò)網(wǎng)絡(luò)定位供slave(s)復(fù)制。

首先，為了簡(jiǎn)單起見(jiàn)，我們將ActiveMQ中介運(yùn)行在同一臺(tái)服務(wù)器上。因此，我們?cè)赪EB-INF/activemq.xml文件中使用簡(jiǎn)單的嵌入式中介配置。

<beans 
 xmlns="http://www.springframework.org/schema/beans" 
 xmlns:amq="http://activemq.apache.org/schema/core" 
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
 xsi:schemaLocation="http://www.springframework.org/schema/beans 
 http://www.springframework.org/schema/beans/spring-beans-2.0.xsd 
 http://activemq.apache.org/schema/core 
 http://activemq.apache.org/schema/core/activemq-core.xsd"> 
 <amq:broker brokerName="HibernateSearchBroker"> 
   <amq:managementContext> 
     <amq:managementContext createConnector="false"/> 
   </amq:managementContext> 
   <amq:transportConnectors> 
     <amq:transportConnector uri="tcp://localhost:61616" />  
   </amq:transportConnectors> 
 </amq:broker> 
 <amq:queue name="queue/hibernatesearch" physicalName="hibernateSearchQueue" /> 
</beans>

其次，需要在web application MEAT-INF/context.xml(Tocmat)中配置配置JNDI資源(JMS Connection Factory 和 Quene)

<!-- ActiveMQ ConnectionFactory --> 
<Resource 
name="jms/ConnectionFactory" 
auth="Container" 
type="org.apache.activemq.ActiveMQConnectionFactory" 
description="JMS Connection Factory" 
factory="org.apache.activemq.jndi.JNDIReferenceFactory" 
brokerURL="tcp://0.0.0.0:61616?trace=true" 
brokerName="HibernateSearchBroker" /> 
 
<!-- ActiveMQ HibernateSearch queue --> 
<Resource 
name="queue/hibernatesearch" 
auth="Container" type="org.apache.activemq.command.ActiveMQQueue" 
description="Hibernate search queue" 
factory="org.apache.activemq.jndi.JNDIReferenceFactory" 
physicalName="hibernateSearchQueue" />

接下來(lái)在Hibernate.cfg.xml文件中配置Hibernate Searc

<property name="hibernate.search.default.directory_provider">org.hibernate.search.store.FSMasterDirectoryProvider</property> 
<property name="hibernate.search.default.indexBase">${local.index.dir}</property> 
<property name="hibernate.search.default.sourceBase">${master.index.dir}</property> 
<property name="hibernate.search.default.refresh">60</property>

Master和slave之間代碼的一個(gè)重要區(qū)別是:master中必須包含實(shí)現(xiàn) AbstractJMSHibernateSearchController 的子類(lèi)作為監(jiān)聽(tīng)器，例如

import javax.jms.MessageListener; 
import org.hibernate.Session; 
import org.hibernate.search.backend.impl.jms.AbstractJMSHibernateSearchController; 
import org.springframework.beans.factory.annotation.Autowired; 
import org.springframework.stereotype.Service; 
@Service 
public class JMSHibernateSearchController 
 extends AbstractJMSHibernateSearchController 
   implements MessageListener { 
 @Override 
 protected void cleanSessionIfNeeded(Session session) { 
  // clean session here ...    
 } 
 @Override 
 protected Session getSession() { 
  // return new session here ...    
 } 
}

最后在Spring的配置文件applicationContext.xml文件中，加入以下配置

<bean id="broker" class="org.apache.activemq.xbean.BrokerFactoryBean"> 
 <property name="config" value="WEB-INF/activemq.xml" /> 
 <property name="start" value="true" /> 
</bean>  
<bean name="jmsConnectionFactory" class="org.springframework.jndi.JndiObjectFactoryBean"> 
 <property name="jndiName" value="java:comp/env/jms/ConnectionFactory" /> 
</bean> 
<bean name="jmsHibernateSearchQueue" class="org.springframework.jndi.JndiObjectFactoryBean"> 
 <property name="jndiName" value="java:comp/env/queue/hibernatesearch" /> 
<bean id="hibernateSearchController" class="<your implementation of AbstractJMSHibernateSearchController>" /> 
<bean id="jmsContainer" class="org.springframework.jms.listener.DefaultMessageListenerContainer" depends-on="broker"> 
 <property name="connectionFactory" ref="jmsConnectionFactory"/> 
 <property name="destination" ref="jmsHibernateSearchQueue"/> 
 <property name="messageListener" ref="hibernateSearchController" /> 
</bean>

With those configurations in place Hibernate Search master is ready to run.
正確配置好之后，Hibernate Search master就可以運(yùn)行了。

Slave 索引配置

Slave(s)的配置要簡(jiǎn)單得多，以下是配置屬性說(shuō)明

${server} - 運(yùn)行ActiveMQ中介服務(wù)器
${lcoal.index.dir} - 存儲(chǔ)本地索引的目錄(master的拷貝)
${mater.index.share}-掛載mater索引的網(wǎng)絡(luò)共享目錄.

首先，我們需要在網(wǎng)站應(yīng)用 MEAT-INF/context.xml(Tocmat)中配置配置JNDI資源(JMS Connection Factory 和 Quene)

... 
<!-- ActiveMQ ConnectionFactory --> 
<Resource 
name="jms/ConnectionFactory" 
auth="Container" 
type="org.apache.activemq.ActiveMQConnectionFactory" 
description="JMS Connection Factory" 
factory="org.apache.activemq.jndi.JNDIReferenceFactory" 
brokerURL="tcp://${server}:61616?trace=true" 
brokerName="HibernateSearchBroker" /> 
 
<!-- ActiveMQ HibernateSearch queue --> 
<Resource 
name="queue/hibernatesearch" 
auth="Container" type="org.apache.activemq.command.ActiveMQQueue" 
description="Hibernate search queue" 
factory="org.apache.activemq.jndi.JNDIReferenceFactory" 
physicalName="hibernateSearchQueue" /> 
...

接下來(lái)我們需要在hibernate.cfg.xml中配置Hibernate Search

<property name="hibernate.search.default.directory_provider">org.hibernate.search.store.FSSlaveDirectoryProvider</property> 
<property name="hibernate.search.default.indexBase">${local.index.dir}</property> 
<property name="hibernate.search.default.sourceBase">${master.index.share}</property> 
<property name="hibernate.search.default.refresh">60</property> 
<property name="hibernate.search.worker.backend">jms</property> 
<property name="hibernate.search.worker.jms.connection_factory">java:comp/env/jms/ConnectionFactory</property> 
<property name="hibernate.search.worker.jms.queue">java:comp/env/queue/hibernatesearch</property> 
<property name="hibernate.search.worker.jndi.java.naming.factory.initial">org.apache.activemq.jndi.ActiveMQInitialContextFactory</property>

配置到此結(jié)束

說(shuō)些關(guān)于JUnit測(cè)試的題外話(huà).唯一的問(wèn)題是需要使用Spring JNDI templates模擬JNDI，例如

<bean name="jmsConnectionFactory" class="org.springframework.jndi.JndiObjectFactoryBean"> 
  <property name="jndiName" value="java:comp/env/jms/ConnectionFactory" /> 
  <property name="jndiTemplate"> 
    <bean class="org.springframework.mock.jndi.ExpectedLookupTemplate"> 
      <constructor-arg index="0" value="java:comp/env/jms/ConnectionFactory" /> 
      <constructor-arg index="1"> 
        <bean class="org.apache.activemq.ActiveMQConnectionFactory"> 
          <property name="brokerURL"> 
            <value>tcp://0.0.0.0:61616</value> 
          </property> 
        </bean> 
      </constructor-arg> 
    </bean> 
  </property> 
</bean> 
 
<bean name="jmsHibernateSearchQueue" class="org.springframework.jndi.JndiObjectFactoryBean"> 
  <property name="jndiName" value="java:comp/env/queue/hibernatesearch" /> 
  <property name="jndiTemplate"> 
    <bean class="org.springframework.mock.jndi.ExpectedLookupTemplate"> 
      <constructor-arg index="0" value="java:comp/env/queue/hibernatesearch" /> 
      <constructor-arg index="1"> 
        <bean id="jmsHibernateSearchQueue"  class="org.apache.activemq.command.ActiveMQQueue"> 
          <constructor-arg value="queue/hibernateSearchQueue"/> 
        </bean>         
      </constructor-arg> 
    </bean> 
  </property> 
</bean>

總結(jié)

以上就是本文關(guān)于分布式Hibernate search詳解的全部?jī)?nèi)容，希望對(duì)大家有所幫助。感興趣的朋友可以繼續(xù)參閱本站：Hibernate實(shí)現(xiàn)悲觀鎖和樂(lè)觀鎖代碼介紹、Hibernate核心思想與接口簡(jiǎn)介等，有什么問(wèn)題可以隨時(shí)留言，小編會(huì)及時(shí)回復(fù)大家的，感謝朋友們對(duì)本站的支持！

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