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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.pipeline.bucketmetrics.percentile;
import com.carrotsearch.hppc.DoubleArrayList;
import org.elasticsearch.common.ParseField;
import org.elasticsearch.common.io.stream.StreamInput;
import org.elasticsearch.common.io.stream.StreamOutput;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.common.xcontent.XContentParser;
import org.elasticsearch.search.aggregations.AggregatorFactory;
import org.elasticsearch.search.aggregations.PipelineAggregationBuilder;
import org.elasticsearch.search.aggregations.pipeline.PipelineAggregator;
import org.elasticsearch.search.aggregations.pipeline.bucketmetrics.BucketMetricsParser;
import org.elasticsearch.search.aggregations.pipeline.bucketmetrics.BucketMetricsPipelineAggregationBuilder;
import java.io.IOException;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
import java.util.Objects;
public class PercentilesBucketPipelineAggregationBuilder
extends BucketMetricsPipelineAggregationBuilder<PercentilesBucketPipelineAggregationBuilder> {
public static final String NAME = "percentiles_bucket";
private static final ParseField PERCENTS_FIELD = new ParseField("percents");
private double[] percents = new double[] { 1.0, 5.0, 25.0, 50.0, 75.0, 95.0, 99.0 };
public PercentilesBucketPipelineAggregationBuilder(String name, String bucketsPath) {
super(name, NAME, new String[] { bucketsPath });
}
/**
* Read from a stream.
*/
public PercentilesBucketPipelineAggregationBuilder(StreamInput in)
throws IOException {
super(in, NAME);
percents = in.readDoubleArray();
}
@Override
protected void innerWriteTo(StreamOutput out) throws IOException {
out.writeDoubleArray(percents);
}
/**
* Get the percentages to calculate percentiles for in this aggregation
*/
public double[] percents() {
return percents;
}
/**
* Set the percentages to calculate percentiles for in this aggregation
*/
public PercentilesBucketPipelineAggregationBuilder percents(double[] percents) {
if (percents == null) {
throw new IllegalArgumentException("[percents] must not be null: [" + name + "]");
}
for (Double p : percents) {
if (p == null || p < 0.0 || p > 100.0) {
throw new IllegalArgumentException(PERCENTS_FIELD.getPreferredName()
+ " must only contain non-null doubles from 0.0-100.0 inclusive");
}
}
this.percents = percents;
return this;
}
@Override
protected PipelineAggregator createInternal(Map<String, Object> metaData) throws IOException {
return new PercentilesBucketPipelineAggregator(name, percents, bucketsPaths, gapPolicy(), formatter(), metaData);
}
@Override
public void doValidate(AggregatorFactory<?> parent, AggregatorFactory<?>[] aggFactories,
List<PipelineAggregationBuilder> pipelineAggregatorFactories) {
if (bucketsPaths.length != 1) {
throw new IllegalStateException(PipelineAggregator.Parser.BUCKETS_PATH.getPreferredName()
+ " must contain a single entry for aggregation [" + name + "]");
}
for (Double p : percents) {
if (p == null || p < 0.0 || p > 100.0) {
throw new IllegalStateException(PERCENTS_FIELD.getPreferredName()
+ " must only contain non-null doubles from 0.0-100.0 inclusive");
}
}
}
@Override
protected XContentBuilder doXContentBody(XContentBuilder builder, Params params) throws IOException {
if (percents != null) {
builder.array(PERCENTS_FIELD.getPreferredName(), percents);
}
return builder;
}
public static final PipelineAggregator.Parser PARSER = new BucketMetricsParser() {
@Override
protected PercentilesBucketPipelineAggregationBuilder buildFactory(String pipelineAggregatorName,
String bucketsPath, Map<String, Object> params) {
PercentilesBucketPipelineAggregationBuilder factory = new
PercentilesBucketPipelineAggregationBuilder(pipelineAggregatorName, bucketsPath);
double[] percents = (double[]) params.get(PERCENTS_FIELD.getPreferredName());
if (percents != null) {
factory.percents(percents);
}
return factory;
}
@Override
protected boolean token(XContentParser parser, String field, XContentParser.Token token, Map<String, Object> params)
throws IOException {
if (PERCENTS_FIELD.match(field) && token == XContentParser.Token.START_ARRAY) {
DoubleArrayList percents = new DoubleArrayList(10);
while (parser.nextToken() != XContentParser.Token.END_ARRAY) {
percents.add(parser.doubleValue());
}
params.put(PERCENTS_FIELD.getPreferredName(), percents.toArray());
return true;
}
return false;
}
};
@Override
protected int innerHashCode() {
return Arrays.hashCode(percents);
}
@Override
protected boolean innerEquals(BucketMetricsPipelineAggregationBuilder<PercentilesBucketPipelineAggregationBuilder> obj) {
PercentilesBucketPipelineAggregationBuilder other = (PercentilesBucketPipelineAggregationBuilder) obj;
return Objects.deepEquals(percents, other.percents);
}
@Override
public String getWriteableName() {
return NAME;
}
}
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