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/*
* Copyright (c) 2016 Google Inc. All Rights Reserved.
*
* Licensed 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 com.android.vts.util;
import com.android.vts.entity.ProfilingPointRunEntity;
import com.google.common.primitives.Doubles;
import com.google.gson.Gson;
import com.google.gson.JsonObject;
import com.google.gson.JsonPrimitive;
import java.util.ArrayList;
import java.util.List;
import org.apache.commons.math3.stat.descriptive.rank.Percentile;
/** Helper object for describing graph data. */
public class Histogram extends Graph {
public static final String PERCENTILES_KEY = "percentiles";
public static final String PERCENTILE_VALUES_KEY = "percentile_values";
public static final String MIN_KEY = "min";
public static final String MAX_KEY = "max";
private List<Double> values;
private List<String> ids;
private String xLabel;
private String yLabel;
private String name;
private GraphType type = GraphType.HISTOGRAM;
private Double min = null;
private Double max = null;
public Histogram(String name) {
this.name = name;
this.values = new ArrayList<>();
this.ids = new ArrayList<>();
}
/**
* Get the x axis label.
*
* @return The x axis label.
*/
@Override
public String getXLabel() {
return xLabel;
}
/**
* Get the graph type.
*
* @return The graph type.
*/
@Override
public GraphType getType() {
return type;
}
/**
* Get the name of the graph.
*
* @return The name of the graph.
*/
@Override
public String getName() {
return name;
}
/**
* Get the y axis label.
*
* @return The y axis label.
*/
@Override
public String getYLabel() {
return yLabel;
}
/**
* Get the number of data points stored in the graph.
*
* @return The number of data points stored in the graph.
*/
@Override
public int size() {
return values.size();
}
/**
* Get the minimum value.
*
* @return The minimum value.
*/
public Double getMin() {
return min;
}
/**
* Get the maximum value.
*
* @return The maximum value.
*/
public Double getMax() {
return max;
}
/**
* Add data to the graph.
*
* @param id The name of the graph.
* @param profilingPoint The ProfilingPointRunEntity containing data to add.
*/
@Override
public void addData(String id, ProfilingPointRunEntity profilingPoint) {
if (profilingPoint.getValues().size() == 0)
return;
xLabel = profilingPoint.getXLabel();
yLabel = profilingPoint.getYLabel();
for (long v : profilingPoint.getValues()) {
double value = v;
values.add(value);
ids.add(id);
if (max == null || value > max)
max = value;
if (min == null || value < min)
min = value;
}
}
/**
* Serializes the graph to json format.
*
* @return A JsonElement object representing the graph object.
*/
@Override
public JsonObject toJson() {
int[] percentiles = {1, 2, 5, 10, 25, 50, 75, 90, 95, 98, 99};
double[] percentileValues = new double[percentiles.length];
double[] valueList = Doubles.toArray(values);
for (int i = 0; i < percentiles.length; i++) {
percentileValues[i] =
Math.round(new Percentile().evaluate(valueList, percentiles[i]) * 1000d)
/ 1000d;
}
JsonObject json = super.toJson();
json.add(VALUE_KEY, new Gson().toJsonTree(values).getAsJsonArray());
json.add(PERCENTILES_KEY, new Gson().toJsonTree(percentiles).getAsJsonArray());
json.add(PERCENTILE_VALUES_KEY, new Gson().toJsonTree(percentileValues).getAsJsonArray());
json.add(IDS_KEY, new Gson().toJsonTree(ids).getAsJsonArray());
json.add(MIN_KEY, new JsonPrimitive(min));
json.add(MAX_KEY, new JsonPrimitive(max));
return json;
}
}
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