org.elasticsearch.search.aggregations.metrics.percentiles.hdr.HDRPercentilesAggregator Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of elasticsearch Show documentation
Show all versions of elasticsearch Show documentation
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.search.aggregations.metrics.percentiles.hdr;
import org.HdrHistogram.DoubleHistogram;
import org.elasticsearch.search.aggregations.Aggregator;
import org.elasticsearch.search.aggregations.InternalAggregation;
import org.elasticsearch.search.aggregations.metrics.percentiles.tdigest.InternalTDigestPercentiles;
import org.elasticsearch.search.aggregations.pipeline.PipelineAggregator;
import org.elasticsearch.search.aggregations.support.AggregationContext;
import org.elasticsearch.search.aggregations.support.ValuesSource;
import org.elasticsearch.search.aggregations.support.ValuesSource.Numeric;
import org.elasticsearch.search.aggregations.support.ValuesSourceAggregatorFactory;
import org.elasticsearch.search.aggregations.support.ValuesSourceConfig;
import org.elasticsearch.search.aggregations.support.format.ValueFormatter;
import java.io.IOException;
import java.util.List;
import java.util.Map;
/**
*
*/
public class HDRPercentilesAggregator extends AbstractHDRPercentilesAggregator {
public HDRPercentilesAggregator(String name, Numeric valuesSource, AggregationContext context, Aggregator parent, double[] percents,
int numberOfSignificantValueDigits, boolean keyed, ValueFormatter formatter,
List pipelineAggregators, Map metaData) throws IOException {
super(name, valuesSource, context, parent, percents, numberOfSignificantValueDigits, keyed, formatter,
pipelineAggregators, metaData);
}
@Override
public InternalAggregation buildAggregation(long owningBucketOrdinal) {
DoubleHistogram state = getState(owningBucketOrdinal);
if (state == null) {
return buildEmptyAggregation();
} else {
return new InternalHDRPercentiles(name, keys, state, keyed, formatter, pipelineAggregators(), metaData());
}
}
@Override
public double metric(String name, long bucketOrd) {
DoubleHistogram state = getState(bucketOrd);
if (state == null) {
return Double.NaN;
} else {
return state.getValueAtPercentile(Double.parseDouble(name));
}
}
@Override
public InternalAggregation buildEmptyAggregation() {
DoubleHistogram state;
state = new DoubleHistogram(numberOfSignificantValueDigits);
state.setAutoResize(true);
return new InternalHDRPercentiles(name, keys, state,
keyed,
formatter, pipelineAggregators(), metaData());
}
public static class Factory extends ValuesSourceAggregatorFactory.LeafOnly {
private final double[] percents;
private final int numberOfSignificantValueDigits;
private final boolean keyed;
public Factory(String name, ValuesSourceConfig valuesSourceConfig, double[] percents,
int numberOfSignificantValueDigits, boolean keyed) {
super(name, InternalTDigestPercentiles.TYPE.name(), valuesSourceConfig);
this.percents = percents;
this.numberOfSignificantValueDigits = numberOfSignificantValueDigits;
this.keyed = keyed;
}
@Override
protected Aggregator createUnmapped(AggregationContext aggregationContext, Aggregator parent,
List pipelineAggregators, Map metaData) throws IOException {
return new HDRPercentilesAggregator(name, null, aggregationContext, parent, percents, numberOfSignificantValueDigits, keyed,
config.formatter(), pipelineAggregators, metaData);
}
@Override
protected Aggregator doCreateInternal(ValuesSource.Numeric valuesSource, AggregationContext aggregationContext, Aggregator parent,
boolean collectsFromSingleBucket, List pipelineAggregators, Map metaData)
throws IOException {
return new HDRPercentilesAggregator(name, valuesSource, aggregationContext, parent, percents, numberOfSignificantValueDigits,
keyed, config.formatter(), pipelineAggregators, metaData);
}
}
}