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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.prelude;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.logging.Logger;
import java.util.stream.Collectors;
import com.yahoo.search.config.IndexInfoConfig;
import com.yahoo.container.QrSearchersConfig;
/**
* Parameter class used for construction IndexFacts.
*
* @author Steinar Knutsen
* @author bratseth
*/
public final class IndexModel {
private static final Logger log = Logger.getLogger(IndexModel.class.getName());
private final Map<String, List<String>> masterClusters;
private final Map<String, SearchDefinition> searchDefinitions;
private final SearchDefinition unionSearchDefinition;
/** Create an index model for a single search definition */
public IndexModel(SearchDefinition searchDefinition) {
this(Collections.emptyMap(), Collections.singleton(searchDefinition));
}
public IndexModel(Map<String, List<String>> masterClusters, Collection<SearchDefinition> searchDefinitions) {
this.masterClusters = masterClusters;
this.searchDefinitions = new LinkedHashMap<>();
this.unionSearchDefinition = unionOf(searchDefinitions);
for (var sd : searchDefinitions) {
this.searchDefinitions.put(sd.getName(), sd);
}
}
public IndexModel(IndexInfoConfig indexInfo, QrSearchersConfig clusters) {
this(indexInfo, toClusters(clusters));
}
public IndexModel(IndexInfoConfig indexInfo, Map<String, List<String>> clusters) {
if (indexInfo != null) {
searchDefinitions = toSearchDefinitions(indexInfo);
unionSearchDefinition = unionOf(searchDefinitions.values());
} else {
searchDefinitions = null;
unionSearchDefinition = null;
}
this.masterClusters = clusters;
}
private static Map<String, List<String>> toClusters(QrSearchersConfig config) {
if (config == null) return new HashMap<>();
Map<String, List<String>> clusters = new HashMap<>();
for (int i = 0; i < config.searchcluster().size(); ++i) {
List<String> docTypes = new ArrayList<>();
String clusterName = config.searchcluster(i).name();
for (int j = 0; j < config.searchcluster(i).searchdef().size(); ++j) {
docTypes.add(config.searchcluster(i).searchdef(j));
}
clusters.put(clusterName, docTypes);
}
return clusters;
}
private static Map<String, SearchDefinition> toSearchDefinitions(IndexInfoConfig c) {
Map<String, SearchDefinition> searchDefinitions = new HashMap<>();
for (Iterator<IndexInfoConfig.Indexinfo> i = c.indexinfo().iterator(); i.hasNext();) {
IndexInfoConfig.Indexinfo info = i.next();
SearchDefinition sd = new SearchDefinition(info.name());
for (Iterator<IndexInfoConfig.Indexinfo.Command> j = info.command().iterator(); j.hasNext();) {
IndexInfoConfig.Indexinfo.Command command = j.next();
sd.addCommand(command.indexname(),command.command());
}
searchDefinitions.put(info.name(), sd);
}
for (IndexInfoConfig.Indexinfo info : c.indexinfo()) {
SearchDefinition sd = searchDefinitions.get(info.name());
for (IndexInfoConfig.Indexinfo.Alias alias : info.alias()) {
String aliasString = alias.alias();
String indexString = alias.indexname();
sd.addAlias(aliasString, indexString);
}
}
return searchDefinitions;
}
private SearchDefinition unionOf(Collection<SearchDefinition> searchDefinitions) {
SearchDefinition union = new SearchDefinition(IndexFacts.unionName);
for (SearchDefinition sd : searchDefinitions) {
for (Index index : sd.indices().values()) {
union.getOrCreateIndex(index.getName());
for (String command : index.allCommands())
union.addCommand(index.getName(), command);
for (String alias : index.aliases()) {
try {
union.addAlias(alias, index.getName());
}
catch (IllegalArgumentException e) {
log.fine("Conflicting alias '" + alias + " of " + index + " in " + sd +
" will not take effect for queries which does not specify that search definition");
}
}
}
}
return union;
}
public Map<String, List<String>> getMasterClusters() { return masterClusters; }
public Map<String, SearchDefinition> getSearchDefinitions() { return searchDefinitions; }
SearchDefinition getUnionSearchDefinition() { return unionSearchDefinition; }
}
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