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/*
* 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.
*/
/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch 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.
*/
/*
* Modifications Copyright OpenSearch Contributors. See
* GitHub history for details.
*/
package org.opensearch.search.aggregations.metrics;
import org.opensearch.common.Nullable;
import org.opensearch.index.query.QueryShardContext;
import org.opensearch.script.Script;
import org.opensearch.script.ScriptedMetricAggContexts;
import org.opensearch.search.SearchParseException;
import org.opensearch.search.aggregations.Aggregator;
import org.opensearch.search.aggregations.AggregatorFactories;
import org.opensearch.search.aggregations.AggregatorFactory;
import org.opensearch.search.aggregations.CardinalityUpperBound;
import org.opensearch.search.internal.SearchContext;
import org.opensearch.search.lookup.SearchLookup;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
class ScriptedMetricAggregatorFactory extends AggregatorFactory {
private final ScriptedMetricAggContexts.MapScript.Factory mapScript;
private final Map mapScriptParams;
private final ScriptedMetricAggContexts.CombineScript.Factory combineScript;
private final Map combineScriptParams;
private final Script reduceScript;
private final Map aggParams;
private final SearchLookup lookup;
@Nullable
private final ScriptedMetricAggContexts.InitScript.Factory initScript;
private final Map initScriptParams;
ScriptedMetricAggregatorFactory(
String name,
ScriptedMetricAggContexts.MapScript.Factory mapScript,
Map mapScriptParams,
@Nullable ScriptedMetricAggContexts.InitScript.Factory initScript,
Map initScriptParams,
ScriptedMetricAggContexts.CombineScript.Factory combineScript,
Map combineScriptParams,
Script reduceScript,
Map aggParams,
SearchLookup lookup,
QueryShardContext queryShardContext,
AggregatorFactory parent,
AggregatorFactories.Builder subFactories,
Map metadata
) throws IOException {
super(name, queryShardContext, parent, subFactories, metadata);
this.mapScript = mapScript;
this.mapScriptParams = mapScriptParams;
this.initScript = initScript;
this.initScriptParams = initScriptParams;
this.combineScript = combineScript;
this.combineScriptParams = combineScriptParams;
this.reduceScript = reduceScript;
this.lookup = lookup;
this.aggParams = aggParams;
}
@Override
public Aggregator createInternal(
SearchContext searchContext,
Aggregator parent,
CardinalityUpperBound cardinality,
Map metadata
) throws IOException {
Map aggParams = this.aggParams == null ? org.opensearch.common.collect.Map.of() : this.aggParams;
Script reduceScript = deepCopyScript(this.reduceScript, searchContext, aggParams);
return new ScriptedMetricAggregator(
name,
lookup,
aggParams,
initScript,
initScriptParams,
mapScript,
mapScriptParams,
combineScript,
combineScriptParams,
reduceScript,
searchContext,
parent,
metadata
);
}
private static Script deepCopyScript(Script script, SearchContext context, Map aggParams) {
if (script != null) {
Map params = mergeParams(aggParams, deepCopyParams(script.getParams(), context));
return new Script(script.getType(), script.getLang(), script.getIdOrCode(), params);
} else {
return null;
}
}
@SuppressWarnings({ "unchecked" })
static T deepCopyParams(T original, SearchContext context) {
T clone;
if (original instanceof Map) {
Map originalMap = (Map) original;
Map