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Move query categorization changes to plugin (#16)
* Move query categorization changes to plugin Signed-off-by: Siddhant Deshmukh <deshsid@amazon.com> * Fix SearchSourceBuilder read/write test failures Signed-off-by: Siddhant Deshmukh <deshsid@amazon.com> * Fix tests Signed-off-by: Siddhant Deshmukh <deshsid@amazon.com> * Fix starting and stopping query insights service Signed-off-by: Siddhant Deshmukh <deshsid@amazon.com> * Unit tests for feature enable/disable and refactor logic Signed-off-by: Siddhant Deshmukh <deshsid@amazon.com> --------- Signed-off-by: Siddhant Deshmukh <deshsid@amazon.com>
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src/main/java/org/opensearch/plugin/insights/core/service/categorizer/QueryShapeVisitor.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,102 @@ | ||
| /* | ||
| * SPDX-License-Identifier: Apache-2.0 | ||
| * | ||
| * The OpenSearch Contributors require contributions made to | ||
| * this file be licensed under the Apache-2.0 license or a | ||
| * compatible open source license. | ||
| */ | ||
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| package org.opensearch.plugin.insights.core.service.categorizer; | ||
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| import org.apache.lucene.search.BooleanClause; | ||
| import org.opensearch.common.SetOnce; | ||
| import org.opensearch.index.query.QueryBuilder; | ||
| import org.opensearch.index.query.QueryBuilderVisitor; | ||
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| import java.util.ArrayList; | ||
| import java.util.EnumMap; | ||
| import java.util.List; | ||
| import java.util.Locale; | ||
| import java.util.Map; | ||
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| /** | ||
| * Class to traverse the QueryBuilder tree and capture the query shape | ||
| */ | ||
| public final class QueryShapeVisitor implements QueryBuilderVisitor { | ||
| private final SetOnce<String> queryType = new SetOnce<>(); | ||
| private final Map<BooleanClause.Occur, List<QueryShapeVisitor>> childVisitors = new EnumMap<>(BooleanClause.Occur.class); | ||
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| @Override | ||
| public void accept(QueryBuilder qb) { | ||
| queryType.set(qb.getName()); | ||
| } | ||
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| @Override | ||
| public QueryBuilderVisitor getChildVisitor(BooleanClause.Occur occur) { | ||
| // Should get called once per Occur value | ||
| if (childVisitors.containsKey(occur)) { | ||
| throw new IllegalStateException("child visitor already called for " + occur); | ||
| } | ||
| final List<QueryShapeVisitor> childVisitorList = new ArrayList<>(); | ||
| QueryBuilderVisitor childVisitorWrapper = new QueryBuilderVisitor() { | ||
| QueryShapeVisitor currentChild; | ||
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| @Override | ||
| public void accept(QueryBuilder qb) { | ||
| currentChild = new QueryShapeVisitor(); | ||
| childVisitorList.add(currentChild); | ||
| currentChild.accept(qb); | ||
| } | ||
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| @Override | ||
| public QueryBuilderVisitor getChildVisitor(BooleanClause.Occur occur) { | ||
| return currentChild.getChildVisitor(occur); | ||
| } | ||
| }; | ||
| childVisitors.put(occur, childVisitorList); | ||
| return childVisitorWrapper; | ||
| } | ||
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| /** | ||
| * Convert query builder tree to json | ||
| * @return json query builder tree as a string | ||
| */ | ||
| public String toJson() { | ||
| StringBuilder outputBuilder = new StringBuilder("{\"type\":\"").append(queryType.get()).append("\""); | ||
| for (Map.Entry<BooleanClause.Occur, List<QueryShapeVisitor>> entry : childVisitors.entrySet()) { | ||
| outputBuilder.append(",\"").append(entry.getKey().name().toLowerCase(Locale.ROOT)).append("\"["); | ||
| boolean first = true; | ||
| for (QueryShapeVisitor child : entry.getValue()) { | ||
| if (!first) { | ||
| outputBuilder.append(","); | ||
| } | ||
| outputBuilder.append(child.toJson()); | ||
| first = false; | ||
| } | ||
| outputBuilder.append("]"); | ||
| } | ||
| outputBuilder.append("}"); | ||
| return outputBuilder.toString(); | ||
| } | ||
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| /** | ||
| * Pretty print the query builder tree | ||
| * @param indent indent size | ||
| * @return Query builder tree as a pretty string | ||
| */ | ||
| public String prettyPrintTree(String indent) { | ||
| StringBuilder outputBuilder = new StringBuilder(indent).append(queryType.get()).append("\n"); | ||
| for (Map.Entry<BooleanClause.Occur, List<QueryShapeVisitor>> entry : childVisitors.entrySet()) { | ||
| outputBuilder.append(indent).append(" ").append(entry.getKey().name().toLowerCase(Locale.ROOT)).append(":\n"); | ||
| for (QueryShapeVisitor child : entry.getValue()) { | ||
| outputBuilder.append(child.prettyPrintTree(indent + " ")); | ||
| } | ||
| } | ||
| return outputBuilder.toString(); | ||
| } | ||
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| /** | ||
| * Default constructor | ||
| */ | ||
| public QueryShapeVisitor() {} | ||
| } |
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