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Elasticsearch subproject :server
/*
* 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.
*/
package org.elasticsearch.script;
import org.elasticsearch.common.settings.ClusterSettings;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.index.query.IntervalFilterScript;
import org.elasticsearch.plugins.ScriptPlugin;
import org.elasticsearch.search.aggregations.pipeline.MovingFunctionScript;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.function.Function;
import java.util.stream.Collectors;
import java.util.stream.Stream;
/**
* Manages building {@link ScriptService}.
*/
public class ScriptModule {
public static final Map> CORE_CONTEXTS;
static {
CORE_CONTEXTS = Stream.of(
FieldScript.CONTEXT,
AggregationScript.CONTEXT,
ScoreScript.CONTEXT,
NumberSortScript.CONTEXT,
StringSortScript.CONTEXT,
TermsSetQueryScript.CONTEXT,
UpdateScript.CONTEXT,
BucketAggregationScript.CONTEXT,
BucketAggregationSelectorScript.CONTEXT,
SignificantTermsHeuristicScoreScript.CONTEXT,
IngestScript.CONTEXT,
IngestConditionalScript.CONTEXT,
FilterScript.CONTEXT,
SimilarityScript.CONTEXT,
SimilarityWeightScript.CONTEXT,
TemplateScript.CONTEXT,
MovingFunctionScript.CONTEXT,
ScriptedMetricAggContexts.InitScript.CONTEXT,
ScriptedMetricAggContexts.MapScript.CONTEXT,
ScriptedMetricAggContexts.CombineScript.CONTEXT,
ScriptedMetricAggContexts.ReduceScript.CONTEXT,
IntervalFilterScript.CONTEXT
).collect(Collectors.toMap(c -> c.name, Function.identity()));
}
private final ScriptService scriptService;
public ScriptModule(Settings settings, List scriptPlugins) {
Map engines = new HashMap<>();
Map> contexts = new HashMap<>(CORE_CONTEXTS);
for (ScriptPlugin plugin : scriptPlugins) {
for (ScriptContext context : plugin.getContexts()) {
ScriptContext oldContext = contexts.put(context.name, context);
if (oldContext != null) {
throw new IllegalArgumentException("Context name [" + context.name + "] defined twice");
}
}
}
for (ScriptPlugin plugin : scriptPlugins) {
ScriptEngine engine = plugin.getScriptEngine(settings, contexts.values());
if (engine != null) {
ScriptEngine existing = engines.put(engine.getType(), engine);
if (existing != null) {
throw new IllegalArgumentException("scripting language [" + engine.getType() + "] defined for engine [" +
existing.getClass().getName() + "] and [" + engine.getClass().getName());
}
}
}
scriptService = new ScriptService(settings, Collections.unmodifiableMap(engines), Collections.unmodifiableMap(contexts));
}
/**
* Service responsible for managing scripts.
*/
public ScriptService getScriptService() {
return scriptService;
}
/**
* Allow the script service to register any settings update handlers on the cluster settings
*/
public void registerClusterSettingsListeners(ClusterSettings clusterSettings) {
scriptService.registerClusterSettingsListeners(clusterSettings);
}
}