标签：next lib ring str jar ati except long efault
背景：基于call客，来电和跟进记录等多个数据来源的用户文档，需要在更新是判断首来源的时间。
如对电话号码11xxxx来说，来电时间是今天，call客时间是昨天，而call客数据又可能因为网络原因晚上传上来，这样一来11xxxx这个用户document的来源时间需要更新成昨天。
分析：solr的默认update没有办法匹配业务的灵活的更新逻辑。更新逻辑如下，当更新来源时间的时候，如果新的来源时间比之前的来源时间晚，则保持之前的来源时间。
代码实现：
package custom.solr; import java.io.IOException; import org.apache.lucene.util.BytesRef; import org.apache.solr.common.SolrInputDocument; import org.apache.solr.core.SolrCore; import org.apache.solr.handler.component.RealTimeGetComponent; import org.apache.solr.request.SolrQueryRequest; import org.apache.solr.response.SolrQueryResponse; import org.apache.solr.search.SolrIndexSearcher; import org.apache.solr.update.AddUpdateCommand; import org.apache.solr.update.processor.UpdateRequestProcessor; import org.apache.solr.update.processor.UpdateRequestProcessorFactory; import org.apache.solr.util.RefCounted; public class ConditionUpdateProcessFactory extends UpdateRequestProcessorFactory { @Override public UpdateRequestProcessor getInstance(SolrQueryRequest req, SolrQueryResponse rsp, UpdateRequestProcessor next) { return new ConditionalUpdateProcessor(req, rsp, next); } } class ConditionalUpdateProcessor extends UpdateRequestProcessor { public static final String ORIGIN_TIMESTAMP = "origin_timestamp"; public ConditionalUpdateProcessor(SolrQueryRequest req, SolrQueryResponse rsp, UpdateRequestProcessor next) { super(next); core = req.getCore(); } private final SolrCore core; @Override public void processAdd(AddUpdateCommand cmd) throws IOException { SolrInputDocument newDoc = cmd.getSolrInputDocument(); BytesRef indexedId = cmd.getIndexedId(); RefCounted<SolrIndexSearcher> newestSearcher = core.getRealtimeSearcher(); SolrIndexSearcher searcher; long lookup; searcher = (SolrIndexSearcher) newestSearcher.get(); lookup = searcher.lookupId(indexedId); //if not exists if (lookup < 0) { super.processAdd(cmd); } SolrInputDocument oldDoc = RealTimeGetComponent.getInputDocument(core, indexedId); Object newOriginTimestamp = newDoc.getFieldValue(ORIGIN_TIMESTAMP); Object oldOriginTimestamp = oldDoc.getFieldValue(ORIGIN_TIMESTAMP); if (newOriginTimestamp != null && oldOriginTimestamp != null) { if (Long.valueOf(oldOriginTimestamp.toString()) < Long.valueOf(newOriginTimestamp.toString())) { newDoc.setField(ORIGIN_TIMESTAMP, oldOriginTimestamp); } } // pass it up the chain super.processAdd(cmd); } }
1.将该类编译后生成jar包放到 /var/lib/solr/plugins目录下，或者你任意指定一个目录。
2.配置solrconfig.xml加载该jar包。(注意修改jar包或者solrconfig.xml之后要reload collection)
<lib dir="/var/lib/solr/plugins" />
3.配置solrconfig.xml的默认update用哪个chain名字。
<requestHandler name="/update" class="solr.UpdateRequestHandler"> <!-- See below for information on defining updateRequestProcessorChains that can be used by name on each Update Request --> <lst name="defaults"> <str name="update.chain">condition</str> </lst> </requestHandler>
以及solrconfig.xml chain的流程。
<updateRequestProcessorChain name="condition"> <processor class="solr.LogUpdateProcessorFactory" /> <processor class="solr.DistributedUpdateProcessorFactory" /> <processor class="custom.solr.ConditionUpdateProcessFactory" /> <processor class="solr.RunUpdateProcessorFactory" /> </updateRequestProcessorChain>
*关于为什么放在DistibutedUpdateProcessFactory之后。
https://wiki.apache.org/solr/Atomic_Updates
Solr Update插件自定义Update Chain按条件更新索引
标签：next lib ring str jar ati except long efault
原文地址：http://www.cnblogs.com/arli/p/6268838.html
