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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.ParseField;
import org.opensearch.common.io.stream.StreamInput;
import org.opensearch.common.xcontent.ConstructingObjectParser;
import org.opensearch.common.xcontent.XContentParser;
import org.opensearch.index.query.QueryShardContext;
import org.opensearch.search.aggregations.AggregationBuilder;
import org.opensearch.search.aggregations.AggregatorFactories;
import org.opensearch.search.aggregations.AggregatorFactory;
import org.opensearch.search.aggregations.support.CoreValuesSourceType;
import org.opensearch.search.aggregations.support.ValuesSourceAggregatorFactory;
import org.opensearch.search.aggregations.support.ValuesSourceConfig;
import org.opensearch.search.aggregations.support.ValuesSourceRegistry;
import org.opensearch.search.aggregations.support.ValuesSourceType;
import java.io.IOException;
import java.util.Arrays;
import java.util.Map;
public class PercentilesAggregationBuilder extends AbstractPercentilesAggregationBuilder {
public static final String NAME = Percentiles.TYPE_NAME;
public static final ValuesSourceRegistry.RegistryKey REGISTRY_KEY =
new ValuesSourceRegistry.RegistryKey<>(NAME, PercentilesAggregatorSupplier.class);
private static final double[] DEFAULT_PERCENTS = new double[] { 1, 5, 25, 50, 75, 95, 99 };
private static final ParseField PERCENTS_FIELD = new ParseField("percents");
private static final ConstructingObjectParser PARSER;
static {
PARSER = AbstractPercentilesAggregationBuilder.createParser(
PercentilesAggregationBuilder.NAME,
(name, values, percentileConfig) -> {
if (values == null) {
values = DEFAULT_PERCENTS; // this is needed because Percentiles has a default, while Ranks does not
} else {
values = validatePercentiles(values, name);
}
return new PercentilesAggregationBuilder(name, values, percentileConfig);
},
PercentilesConfig.TDigest::new,
PERCENTS_FIELD
);
}
public static void registerAggregators(ValuesSourceRegistry.Builder builder) {
PercentilesAggregatorFactory.registerAggregators(builder);
}
public PercentilesAggregationBuilder(StreamInput in) throws IOException {
super(in, PERCENTS_FIELD);
}
public static AggregationBuilder parse(String aggregationName, XContentParser parser) throws IOException {
return PARSER.parse(parser, aggregationName);
}
public PercentilesAggregationBuilder(String name) {
this(name, DEFAULT_PERCENTS, null);
}
public PercentilesAggregationBuilder(String name, double[] values, PercentilesConfig percentilesConfig) {
super(name, values, percentilesConfig, PERCENTS_FIELD);
}
protected PercentilesAggregationBuilder(
PercentilesAggregationBuilder clone,
AggregatorFactories.Builder factoriesBuilder,
Map metadata
) {
super(clone, factoriesBuilder, metadata);
}
@Override
protected AggregationBuilder shallowCopy(AggregatorFactories.Builder factoriesBuilder, Map metadata) {
return new PercentilesAggregationBuilder(this, factoriesBuilder, metadata);
}
@Override
protected ValuesSourceType defaultValueSourceType() {
return CoreValuesSourceType.NUMERIC;
}
/**
* Set the values to compute percentiles from.
*/
public PercentilesAggregationBuilder percentiles(double... percents) {
this.values = validatePercentiles(percents, name);
return this;
}
private static double[] validatePercentiles(double[] percents, String aggName) {
if (percents == null) {
throw new IllegalArgumentException("[percents] must not be null: [" + aggName + "]");
}
if (percents.length == 0) {
throw new IllegalArgumentException("[percents] must not be empty: [" + aggName + "]");
}
double[] sortedPercents = Arrays.copyOf(percents, percents.length);
Arrays.sort(sortedPercents);
for (double percent : sortedPercents) {
if (percent < 0.0 || percent > 100.0) {
throw new IllegalArgumentException("percent must be in [0,100], got [" + percent + "]: [" + aggName + "]");
}
}
return sortedPercents;
}
/**
* Get the values to compute percentiles from.
*/
public double[] percentiles() {
return values;
}
@Override
protected ValuesSourceAggregatorFactory innerBuild(
QueryShardContext queryShardContext,
ValuesSourceConfig config,
AggregatorFactory parent,
AggregatorFactories.Builder subFactoriesBuilder
) throws IOException {
return new PercentilesAggregatorFactory(
name,
config,
values,
configOrDefault(),
keyed,
queryShardContext,
parent,
subFactoriesBuilder,
metadata
);
}
@Override
public String getType() {
return NAME;
}
@Override
protected ValuesSourceRegistry.RegistryKey getRegistryKey() {
return REGISTRY_KEY;
}
}