cpoerschke commented on code in PR #2382: URL: https://github.com/apache/solr/pull/2382#discussion_r1840966254
########## solr/modules/monitor/src/java/org/apache/solr/monitor/search/ReverseSearchComponent.java: ########## @@ -0,0 +1,223 @@ +/* + * + * * Licensed to the Apache Software Foundation (ASF) under one or more + * * contributor license agreements. See the NOTICE file distributed with + * * this work for additional information regarding copyright ownership. + * * The ASF licenses this file to You 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 org.apache.solr.monitor.search; + +import static org.apache.solr.monitor.MonitorConstants.MONITOR_DOCUMENTS_KEY; +import static org.apache.solr.monitor.search.PresearcherFactory.DEFAULT_ALIAS_PREFIX; + +import java.io.IOException; +import java.util.ArrayList; +import java.util.Arrays; +import java.util.Comparator; +import java.util.List; +import java.util.Map; +import java.util.Optional; +import java.util.UUID; +import java.util.function.BiPredicate; +import org.apache.lucene.document.Document; +import org.apache.lucene.monitor.DocumentBatchVisitor; +import org.apache.lucene.monitor.MonitorFields; +import org.apache.lucene.monitor.Presearcher; +import org.apache.lucene.monitor.QueryDecomposer; +import org.apache.lucene.monitor.QueryMatch; +import org.apache.lucene.monitor.TermFilteredPresearcher; +import org.apache.lucene.search.IndexSearcher; +import org.apache.lucene.search.MatchAllDocsQuery; +import org.apache.lucene.search.Query; +import org.apache.lucene.util.BytesRef; +import org.apache.solr.common.SolrException; +import org.apache.solr.common.util.NamedList; +import org.apache.solr.core.SolrCore; +import org.apache.solr.handler.component.QueryComponent; +import org.apache.solr.handler.component.ResponseBuilder; +import org.apache.solr.handler.loader.JsonLoader; +import org.apache.solr.monitor.AliasingPresearcher; +import org.apache.solr.monitor.SolrMonitorQueryDecoder; +import org.apache.solr.monitor.cache.MonitorQueryCache; +import org.apache.solr.monitor.cache.SharedMonitorCache; +import org.apache.solr.request.SolrQueryRequest; +import org.apache.solr.schema.SchemaField; +import org.apache.solr.update.DocumentBuilder; +import org.apache.solr.util.SolrPluginUtils; +import org.apache.solr.util.plugin.SolrCoreAware; + +public class ReverseSearchComponent extends QueryComponent implements SolrCoreAware { + + public static final String COMPONENT_NAME = "reverseSearch"; + + private static final String SOLR_MONITOR_CACHE_NAME_KEY = "solrMonitorCacheName"; + private static final String SOLR_MONITOR_CACHE_NAME_DEFAULT = "solrMonitorCache"; + private String solrMonitorCacheName = SOLR_MONITOR_CACHE_NAME_DEFAULT; + + private QueryDecomposer queryDecomposer; + private Presearcher presearcher; + private PresearcherFactory.PresearcherParameters presearcherParameters; + + @Override + public void init(NamedList<?> args) { + super.init(args); + Object solrMonitorCacheName = args.remove(SOLR_MONITOR_CACHE_NAME_KEY); + if (solrMonitorCacheName != null) { + this.solrMonitorCacheName = (String) solrMonitorCacheName; + } + presearcherParameters = new PresearcherFactory.PresearcherParameters(); + SolrPluginUtils.invokeSetters(presearcherParameters, args); + } + + @Override + public void prepare(ResponseBuilder rb) throws IOException { + super.prepare(rb); + var req = rb.req; + var documentBatch = documentBatch(req); + var matcherSink = + new SyncSolrMatcherSink<>( + QueryMatch.SIMPLE_MATCHER::createMatcher, + new IndexSearcher(documentBatch.get()), + matchingQueries -> { + if (rb.isDebug()) { + rb.req + .getContext() + .put( + ReverseSearchDebugComponent.ReverseSearchDebugInfo.KEY, + new ReverseSearchDebugComponent.ReverseSearchDebugInfo( + matchingQueries.getQueriesRun())); + } + }); + Query preFilterQuery = presearcher.buildQuery(documentBatch.get(), getTermAcceptor(rb.req)); + List<Query> mutableFilters = + Optional.ofNullable(rb.getFilters()).map(ArrayList::new).orElseGet(ArrayList::new); + rb.setQuery(new MatchAllDocsQuery()); + mutableFilters.add(preFilterQuery); + var searcher = req.getSearcher(); + MonitorQueryCache solrMonitorCache = + (SharedMonitorCache) searcher.getCache(this.solrMonitorCacheName); + SolrMonitorQueryDecoder queryDecoder = new SolrMonitorQueryDecoder(req.getCore()); + mutableFilters.add( + new MonitorPostFilter( + new SolrMonitorQueryCollector.CollectorContext( + solrMonitorCache, queryDecoder, matcherSink))); + rb.setFilters(mutableFilters); Review Comment: Added https://github.com/apache/solr/pull/2382/commits/113ca8fcf90248ee48a80e2245fa5ce839d0c705 commit with some reordering and edits here to aid code reading comprehension, also removes duplicate `req.getSearcher().getCache()` call as a side effect. -- This is an automated message from the Apache Git Service. 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