BroadLeaf項目搜索功能改進



    關於Solr

    Broadleaf項目中關於商品的搜索使用了嵌入式的Solr服務器,這個從配置文件中能夠看出來。java

    從示例網站源代碼的applicationContext.xml文件中能夠看到關於solr的配置:spring

        <bean id="solrEmbedded" class="java.lang.String">    
             <constructor-arg value="solrhome"/>     
        </bean>    
        <bean id="blSearchService" class="org.broadleafcommerce.core.search.service.solr.SolrSearchServiceImpl"> 
                <constructor-arg name="solrServer" ref="${solr.source}" />
                <constructor-arg name="reindexServer" ref="${solr.source.reindex}" />     
        </bean>      
        <bean id="rebuildIndexJobDetail" class="org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean">
                 <property name="targetObject" ref="blSearchService" />         
                 <property name="targetMethod" value="rebuildIndex" />     
        </bean>
        <bean id="rebuildIndexTrigger" class="org.springframework.scheduling.quartz.SimpleTriggerFactoryBean">
                 <property name="jobDetail" ref="rebuildIndexJobDetail" />         
                 <property name="startDelay" value="${solr.index.start.delay}" />         
                 <property name="repeatInterval" value="${solr.index.repeat.interval}" />     
        </bean>     
        <bean class="org.springframework.scheduling.quartz.SchedulerFactoryBean">         
            <property name="triggers">             
                <list>                 
                    <ref bean="rebuildIndexTrigger" />                 
                    <!--<ref bean="purgeCartTrigger" />-->                 
                    <!--<ref bean="purgeCustomerTrigger" />-->             
                </list>         
            </property>     
        </bean>

    資源配置文件在common.properties:shell

    web.defaultPageSize=15 
    web.maxPageSize=100 
    solr.source=solrEmbedded 
    solr.source.reindex=solrEmbedded 
    solr.index.start.delay=5000 
    solr.index.repeat.interval=3600000

    從上能夠看出使用的Solr是嵌入式服務,Solr配置文件(schema.xml和solrconfig.xml)在 https://github.com/BroadleafCommerce/DemoSite/tree/master/site/src/main/resources 目錄下。數據庫

    從源代碼SolrSearchServiceImpl.java中能夠看出,一共啓動了兩個Solr服務,分別對應primary和reindex兩個solrcore,primary用於查詢,reindex用於重建索引。apache

    改進搜索引擎

    改進目標

    本篇文章只是將嵌入式Solr服務換成獨立運行的Solr服務,你還能夠更進一步換成SolrCloud集羣。json

    • 單獨搭建搜素引擎服務器緩存

    • 支持增量更新索引

    • 支持手動重建索引

    設計思路

    • 1.修改原系統中的嵌入式搜索引擎爲獨立部署的搜索引擎,安裝方法見下文。

    • 2.擴展原系統中的SolrSearchServiceImpl類,添加增長索引的方法。

    • 3.修改原來系統中商品的service類(我這裏調用的是LLCatalogServiceImpl,該類是新添加的),在saveProduct方法中添加往搜索引擎添加索引的方法。

    • 4.修改原系統中solr相關的配置文件。

    • 5.修改原系統中的重建索引的定時任務,以支持手動重建索引。

    實現方法

    一、搭建獨立運行的solr服務器

    你能夠參考:Apache Solr介紹及安裝

    關鍵在於solr/home的定義,以及在該目錄下建立兩個目錄,分別爲primary和reindex,兩個目錄下的配置文件都同樣,solr/home目錄結構以下:

    ➜  solrhome-solr  tree -L 3 
    . 
    ├── primary │   
        └── conf │       
        ├── schema.xml │       
        └── solrconfig.xml 
    ├── reindex │   
        └── conf │       
        ├── schema.xml │       
        └── solrconfig.xml 
        └── solr.xml 
     4 directories, 5 files

    solr.xml文件內容以下:

    <?xml version="1.0" encoding="UTF-8" ?> 
    <solr persistent="true">   
        <cores defaultCoreName="primary" adminPath="/admin/cores">     
            <core instanceDir="reindex" name="reindex"/>     
            <core instanceDir="primary" name="primary"/>   
        </cores> 
    </solr>

    schema.xml內容和原來的基本同樣,只是添加了一行:

    <field name="_version_" type="long" indexed="true" stored="true" multiValued="false"/>

    solrconfig.xml內容以下:

    <?xml version="1.0" encoding="UTF-8" ?> 
    <config>   
        <luceneMatchVersion>4.4</luceneMatchVersion>   
        <directoryFactory name="DirectoryFactory" class="${solr.directoryFactory:solr.StandardDirectoryFactory}"/>
           
        <schemaFactory class="ClassicIndexSchemaFactory"/>   
        
        <updateHandler class="solr.DirectUpdateHandler2">     
            <autoCommit>         
                <maxDocs>2</maxDocs>         
                <maxTime>3000</maxTime>     
            </autoCommit>   
        </updateHandler>  
        
        <requestHandler name="/get" class="solr.RealTimeGetHandler">     
            <lst name="defaults">       
                <str name="omitHeader">true</str>     
            </lst>   
        </requestHandler>   
        
        <requestHandler name="/replication" class="solr.ReplicationHandler" startup="lazy" />    
        
        <requestDispatcher handleSelect="true" >     
            <requestParsers enableRemoteStreaming="false" multipartUploadLimitInKB="2048" formdataUploadLimitInKB="2048" />     
            <httpCaching never304="true" />  
        </requestDispatcher>   
        
        <requestHandler name="standard" class="solr.StandardRequestHandler" default="true" />   
        <requestHandler name="/analysis/field" startup="lazy" class="solr.FieldAnalysisRequestHandler" />   
        <requestHandler name="/update" class="solr.UpdateRequestHandler"  />   
        <requestHandler name="/update/csv" class="solr.CSVRequestHandler" startup="lazy" />   
        <requestHandler name="/update/json" class="solr.JsonUpdateRequestHandler" startup="lazy" />   
        <requestHandler name="/admin/" class="org.apache.solr.handler.admin.AdminHandlers" />   
        <requestHandler name="/admin/ping" class="solr.PingRequestHandler">     
            <lst name="invariants">       
                <str name="q">solrpingquery</str>     
            </lst>     
            
            <lst name="defaults">       
                <str name="echoParams">all</str>     
            </lst>   
        </requestHandler>   
        
        <queryResponseWriter name="json" class="solr.JSONResponseWriter">         
            <str name="content-type">text/plain; charset=UTF-8</str>   
        </queryResponseWriter>  
         
         
        <!-- config for the admin interface -->    
        <admin>     
            <defaultQuery>solr</defaultQuery>   
         </admin> 
    </config>

    二、擴展SolrSearchServiceImpl類

    在core模塊建立org.broadleafcommerce.core.search.service.solr.ExtSolrSearchService接口,該接口定義以下:

    package org.broadleafcommerce.core.search.service.solr; 
    import java.io.IOException; 
    import org.broadleafcommerce.common.exception.ServiceException; 
    import org.broadleafcommerce.core.catalog.domain.Product; 
    import org.broadleafcommerce.core.search.service.SearchService; 
    
    public interface ExtSolrSearchService extends SearchService {     
            public void addProductIndex(Product product) throws ServiceException,     
            IOException; 
            
    }

    而後,建立其實現類org.broadleafcommerce.core.search.service.solr.ExtSolrSearchServiceImpl,該實現類定義以下:

    package org.broadleafcommerce.core.search.service.solr; 
    import java.io.IOException; 
    import java.util.ArrayList; 
    import java.util.Collections; 
    import java.util.Comparator; 
    import java.util.List; 
    import javax.annotation.Resource; 
    import javax.xml.parsers.ParserConfigurationException; 
    import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; 
    import org.apache.solr.client.solrj.SolrServer; 
    import org.apache.solr.client.solrj.SolrServerException; 
    import org.apache.solr.client.solrj.response.QueryResponse; 
    import org.apache.solr.common.SolrDocument; 
    import org.apache.solr.common.SolrDocumentList; 
    import org.apache.solr.common.SolrInputDocument; 
    import org.broadleafcommerce.common.exception.ServiceException; 
    import org.broadleafcommerce.common.locale.domain.Locale; 
    import org.broadleafcommerce.common.util.StopWatch; 
    import org.broadleafcommerce.common.util.TransactionUtils; 
    import org.broadleafcommerce.core.catalog.domain.Product; 
    import org.broadleafcommerce.core.search.domain.Field; 
    import org.springframework.transaction.TransactionDefinition; 
    import org.springframework.transaction.TransactionStatus; 
    import org.xml.sax.SAXException; 
    
    public class ExtSolrSearchServiceImpl extends SolrSearchServiceImpl implements         
            ExtSolrSearchService {     
            
        private static final Log LOG = LogFactory             
                        .getLog(ExtSolrSearchServiceImpl.class);     
                    
        @Resource(name = "blSolrIndexService")     
        protected SolrIndexServiceImpl solrIndexServiceImpl;     
        
        public ExtSolrSearchServiceImpl(SolrServer solrServer,
                 SolrServer reindexServer) {
              super(solrServer, reindexServer);
         }
         public ExtSolrSearchServiceImpl(SolrServer solrServer) {
             super(solrServer);
         }
         public ExtSolrSearchServiceImpl(String solrServer, String reindexServer)
                 throws IOException, ParserConfigurationException, SAXException {
             super(solrServer, reindexServer);
         }
         public ExtSolrSearchServiceImpl(String solrServer) throws IOException,
                 ParserConfigurationException, SAXException {
             super(solrServer);
         }
         public void addProductIndex(Product product) throws ServiceException,
                 IOException {
             TransactionStatus status = TransactionUtils.createTransaction(
                     "saveProduct", TransactionDefinition.PROPAGATION_REQUIRED,
                     solrIndexServiceImpl.transactionManager, true);
             StopWatch s = new StopWatch();
             try {
                  List<Field> fields = fieldDao.readAllProductFields();
                  List<Locale> locales = solrIndexServiceImpl.getAllLocales();
                  SolrInputDocument document = solrIndexServiceImpl.buildDocument(
                                       product, fields, locales);
                  if (LOG.isTraceEnabled()) {
                      LOG.trace(document);
                  } 
                  SolrContext.getServer().add(document);
                  SolrContext.getServer().commit();
                  TransactionUtils.finalizeTransaction(status,
                               solrIndexServiceImpl.transactionManager, false);
                  } catch (SolrServerException e) {
                   TransactionUtils.finalizeTransaction(status,
                          solrIndexServiceImpl.transactionManager, true); 
                   throw new ServiceException("Could not rebuild index", e);
                  } catch (IOException e) {
                   TransactionUtils.finalizeTransaction(status,
                          solrIndexServiceImpl.transactionManager, true);
                   throw new ServiceException("Could not rebuild index", e); 
                  } catch (RuntimeException e) {
                    TransactionUtils.finalizeTransaction(status,
                          solrIndexServiceImpl.transactionManager, true);
                   throw e;
                  }
             LOG.info(String.format("Finished adding index in %s", s.toLapString()));
         }    
          protected List<Product> getProducts(QueryResponse response) {
             final List<Long> productIds = new ArrayList<Long>();
             SolrDocumentList docs = response.getResults();
             for (SolrDocument doc : docs) {
                 productIds                     
                          .add((Long) doc.getFieldValue(shs.getProductIdFieldName()));
             }
             /**          * TODO 請添加緩存相關代碼          */ 
             List<Product> products = productDao.readProductsByIds(productIds);
             // We have to sort the products list by the order of the productIds list
             // to maintain sortability in the UI
             if (products != null) { 
                Collections.sort(products, new Comparator<Product>() {
                     public int compare(Product o1, Product o2) {
                         return new Integer(productIds.indexOf(o1.getId()))
                                 .compareTo(productIds.indexOf(o2.getId())); 
                    }
                  });
             }
             return products;
         }
      }

    三、 修改solr相關配置文件

    a. 刪除web模塊中/web/src/main/webapp/WEB-INF/applicationContext.xml的如下代碼:

    <bean id="blSearchService" class="org.broadleafcommerce.core.search.service.solr.SolrSearchServiceImpl">
         <constructor-arg name="solrServer" ref="${solr.source}" />
         <constructor-arg name="reindexServer" ref="${solr.source.reindex}" />
     </bean>

    b.刪除web模塊中web/src/main/resources/runtime-properties/common.properties的如下代碼:

    solr.source=solrEmbedded 
    solr.source.reindex=solrEmbedded

    c. 在core模塊中core/src/main/resources/applicationContext.xml添加以下代碼:

    <bean id="solrServer" class="org.apache.solr.client.solrj.impl.HttpSolrServer"> 
        <constructor-arg value="${solr.url}" /> 
    </bean>
    
    <bean id="solrReindexServer" class="org.apache.solr.client.solrj.impl.HttpSolrServer"> 
        <constructor-arg value="${solr.url.reindex}" /> 
    </bean> 
    
    <bean id="blSearchService"     class="org.broadleafcommerce.core.search.service.solr.ExtSolrSearchServiceImpl">     
        <constructor-arg name="solrServer" ref="${solr.source}" />     
        <constructor-arg name="reindexServer" ref="${solr.source.reindex}" /> 
    </bean>

    d. 在core模塊中core/src/main/resources/runtime-properties/common-shared.properties添加以下代碼:

    solr.url= 
    solr.url.reindex=http://localhost:8080/solr/reindex
    solr.source=solrServer
    solr.source.reindex=solrReindexServer

    四、 修改LLCatalogServiceImpl類

    添加以下代碼:

    @Resource(name = "blSearchService") 
    private ExtSolrSearchService extSolrSearchService;

    修改該類的saveProduct方法以下:

    @Override 
    @Transactional("blTransactionManager") 
    public Product saveProduct(Product product) {
         Product dbProduct = catalogService.saveProduct(product);     
         try {         
             
             extSolrSearchService.addProductIndex(dbProduct);     
              
             } catch (ServiceException e) {
                 e.printStackTrace();
                 throw new RuntimeException(e);     
             } catch (IOException e) {         
                 e.printStackTrace();         
                 throw new RuntimeException(e);     
             }     
             return dbProduct;
      }

    五、 修改定時任務

    a. web系統啓動時候,會查詢數據庫中商品,而後重建索引。該功能在applicationContext.xml中已經定義了定時任務,建議取消該定時任務。去掉如下代碼:

    <bean id="rebuildIndexJobDetail"     class="org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean">
         <property name="targetObject" ref="blSearchService" />     
         <property name="targetMethod" value="rebuildIndex" /> 
    </bean> 
    
    <bean id="rebuildIndexTrigger" class="org.springframework.scheduling.quartz.SimpleTriggerBean">     
        <property name="jobDetail" ref="rebuildIndexJobDetail" />     
        <property name="startDelay" value="${solr.index.start.delay}" />     
        <property name="repeatInterval" value="${solr.index.repeat.interval}" /> 
    </bean>
    
    <bean class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
         <property name="triggers">
                  <list>             
                      <ref bean="rebuildIndexTrigger" />         
                  </list>     
         </property> 
    </bean>

    b. 編寫main方法,打成jar包,而後編寫shell腳本,用於手動重建索引或者設置定時任務。該類須要獲取一個名稱爲blSearchService的bean,而後調用該bean的rebuildIndex方法,主要代碼以下。

    @Resource(name = "blSearchService") 
    private SearchService extSolrSearchService;
     public void doRebuild(){ 
         extSolrSearchService.rebuildIndex(); 
     }
    相關文章
    相關標籤/搜索