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/*
* 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.search.aggregations.metrics.cardinality;
import org.elasticsearch.common.io.stream.Writeable.Reader;
import org.elasticsearch.common.lease.Releasables;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.util.MockBigArrays;
import org.elasticsearch.indices.breaker.NoneCircuitBreakerService;
import org.elasticsearch.search.aggregations.InternalAggregationTestCase;
import org.elasticsearch.search.aggregations.ParsedAggregation;
import org.elasticsearch.search.aggregations.pipeline.PipelineAggregator;
import org.junit.After;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
public class InternalCardinalityTests extends InternalAggregationTestCase<InternalCardinality> {
private static List<HyperLogLogPlusPlus> algos;
private static int p;
@Override
public void setUp() throws Exception {
super.setUp();
algos = new ArrayList<>();
p = randomIntBetween(HyperLogLogPlusPlus.MIN_PRECISION, HyperLogLogPlusPlus.MAX_PRECISION);
}
@After //we force @After to have it run before ESTestCase#after otherwise it fails
@Override
public void tearDown() throws Exception {
super.tearDown();
Releasables.close(algos);
algos.clear();
algos = null;
}
@Override
protected InternalCardinality createTestInstance(String name,
List<PipelineAggregator> pipelineAggregators, Map<String, Object> metaData) {
HyperLogLogPlusPlus hllpp = new HyperLogLogPlusPlus(p,
new MockBigArrays(Settings.EMPTY, new NoneCircuitBreakerService()), 1);
algos.add(hllpp);
for (int i = 0; i < 100; i++) {
hllpp.collect(0, randomIntBetween(1, 100));
}
return new InternalCardinality(name, hllpp, pipelineAggregators, metaData);
}
@Override
protected Reader<InternalCardinality> instanceReader() {
return InternalCardinality::new;
}
@Override
protected void assertReduced(InternalCardinality reduced, List<InternalCardinality> inputs) {
HyperLogLogPlusPlus[] algos = inputs.stream().map(InternalCardinality::getState)
.toArray(size -> new HyperLogLogPlusPlus[size]);
if (algos.length > 0) {
HyperLogLogPlusPlus result = algos[0];
for (int i = 1; i < algos.length; i++) {
result.merge(0, algos[i], 0);
}
assertEquals(result.cardinality(0), reduced.value(), 0);
}
}
@Override
protected void assertFromXContent(InternalCardinality aggregation, ParsedAggregation parsedAggregation) {
assertTrue(parsedAggregation instanceof ParsedCardinality);
ParsedCardinality parsed = (ParsedCardinality) parsedAggregation;
assertEquals(aggregation.getValue(), parsed.getValue(), Double.MIN_VALUE);
assertEquals(aggregation.getValueAsString(), parsed.getValueAsString());
}
}
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