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* this work for additional information regarding copyright
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* 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
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package org.elasticsearch.search.aggregations.metrics.scripted;
import org.elasticsearch.ElasticsearchException;
import org.elasticsearch.common.io.stream.Writeable.Reader;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.env.Environment;
import org.elasticsearch.script.MockScriptEngine;
import org.elasticsearch.script.Script;
import org.elasticsearch.script.ScriptContextRegistry;
import org.elasticsearch.script.ScriptEngineRegistry;
import org.elasticsearch.script.ScriptService;
import org.elasticsearch.script.ScriptSettings;
import org.elasticsearch.script.ScriptType;
import org.elasticsearch.search.aggregations.pipeline.PipelineAggregator;
import org.elasticsearch.test.InternalAggregationTestCase;
import java.io.IOException;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
public class InternalScriptedMetricTests extends InternalAggregationTestCase<InternalScriptedMetric> {
private static final String REDUCE_SCRIPT_NAME = "reduceScript";
// randomized only once so that any random test instance has the same value
private boolean hasReduceScript = randomBoolean();
@Override
protected InternalScriptedMetric createTestInstance(String name, List<PipelineAggregator> pipelineAggregators,
Map<String, Object> metaData) {
Map<String, Object> params = new HashMap<>();
if (randomBoolean()) {
params.put(randomAlphaOfLength(5), randomAlphaOfLength(5));
}
Script reduceScript = null;
if (hasReduceScript) {
reduceScript = new Script(ScriptType.INLINE, MockScriptEngine.NAME, REDUCE_SCRIPT_NAME, params);
}
return new InternalScriptedMetric(name, randomAlphaOfLength(5), reduceScript, pipelineAggregators, metaData);
}
/**
* Mock of the script service. The script that is run looks at the
* "_aggs" parameter visible when executing the script and simply returns the count.
* This should be equal to the number of input InternalScriptedMetrics that are reduced
* in total.
*/
@Override
protected ScriptService mockScriptService() {
Settings settings = Settings.builder()
.put(Environment.PATH_HOME_SETTING.getKey(), createTempDir())
.build();
// mock script always retuns the size of the input aggs list as result
@SuppressWarnings("unchecked")
MockScriptEngine scriptEngine = new MockScriptEngine(MockScriptEngine.NAME,
Collections.singletonMap(REDUCE_SCRIPT_NAME, script -> {
return ((List<Object>) script.get("_aggs")).size();
}));
ScriptEngineRegistry scriptEngineRegistry = new ScriptEngineRegistry(Collections.singletonList(scriptEngine));
ScriptContextRegistry scriptContextRegistry = new ScriptContextRegistry(Collections.emptyList());
ScriptSettings scriptSettings = new ScriptSettings(scriptEngineRegistry, scriptContextRegistry);
try {
return new ScriptService(settings, new Environment(settings), null, scriptEngineRegistry, scriptContextRegistry,
scriptSettings);
} catch (IOException e) {
throw new ElasticsearchException(e);
}
}
@Override
protected void assertReduced(InternalScriptedMetric reduced, List<InternalScriptedMetric> inputs) {
InternalScriptedMetric firstAgg = inputs.get(0);
assertEquals(firstAgg.getName(), reduced.getName());
assertEquals(firstAgg.pipelineAggregators(), reduced.pipelineAggregators());
assertEquals(firstAgg.getMetaData(), reduced.getMetaData());
if (hasReduceScript) {
assertEquals(inputs.size(), reduced.aggregation());
} else {
assertEquals(inputs.size(), ((List<Object>) reduced.aggregation()).size());
}
}
@Override
protected Reader<InternalScriptedMetric> instanceReader() {
return InternalScriptedMetric::new;
}
}