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CloudSim Plus: A modern, highly extensible and easier-to-use Java 8+ Framework for Modeling and Simulation of Cloud Computing Infrastructures and Services
/*
* CloudSim Plus: A modern, highly-extensible and easier-to-use Framework for
* Modeling and Simulation of Cloud Computing Infrastructures and Services.
* http://cloudsimplus.org
*
* Copyright (C) 2015-2021 Universidade da Beira Interior (UBI, Portugal) and
* the Instituto Federal de Educação Ciência e Tecnologia do Tocantins (IFTO, Brazil).
*
* This file is part of CloudSim Plus.
*
* CloudSim Plus is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* CloudSim Plus is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with CloudSim Plus. If not, see .
*/
package org.cloudsimplus.testbeds;
import org.apache.commons.lang3.StringUtils;
import java.util.List;
import static java.util.stream.Collectors.joining;
import static org.cloudsimplus.builders.tables.CsvTableColumn.alignStringRight;
/**
* Generates tables for experiment's results.
* @author Manoel Campos da Silva Filho
* @since CloudSim Plus 7.0.1
*/
final class ResultTable {
private final ExperimentRunner runner;
private final List confidenceIntervals;
/**
* @param runner experiment runner collecting results
* @param confidenceIntervals a List of
* {@link ConfidenceInterval} objects summarizing the results for different metrics
* from all simulation runs.
*/
ResultTable(final ExperimentRunner runner, final List confidenceIntervals){
this.runner = runner;
this.confidenceIntervals = confidenceIntervals;
}
void buildCsvResultsTable() {
final String cols = confidenceIntervals.stream().map(ConfidenceInterval::getMetricName).collect(joining("; "));
System.out.printf("Type of Value;%s%n", cols);
final String format = "%.2f";
final String values =
confidenceIntervals
.stream()
.map(ci -> alignStringRight(format.formatted(ci.getValue()), ci.getMetricName().length()))
.collect(joining("; "));
final String valueType = runner.getSimulationRuns() > 1 ? "CI " : "Mean ";
System.out.printf("%s;%s%n", valueType, values);
final String errorMargins =
confidenceIntervals
.stream()
.map(ci -> alignStringRight(format.formatted(ci.getErrorMargin()), ci.getMetricName().length()))
.collect(joining("; "));
System.out.printf("Error Margin ;%s%n", errorMargins);
}
/**
* Generates the latex table for metrics results.
*/
void buildLatexMetricsResultTable() {
if(!runner.isLatexTableResultsGeneration()) {
return;
}
if (runner.getSimulationRuns() == 1) {
System.out.println("Latex table with metrics' results is just built when the number of simulation runs is greater than 1.");
return;
}
final StringBuilder latex = startLatexTable();
confidenceIntervals.forEach(ci -> latexRow(latex, ci));
latex.append(" \\end{tabular}\n\\end{table}\n");
System.out.println();
System.out.println(latex);
}
private StringBuilder startLatexTable() {
final var fmt =
"""
\\begin{table}[!hbt]
\\caption{%s}
\\label{%s}
\\begin{tabular}{|p{2.8cm}|p{1.3cm}p{1.3cm}|>{\\raggedleft\\arraybackslash}p{1.2cm}|}
\\hline
\\textbf{Metric} & \\multicolumn{2}{p{3.0cm}|}{\\textbf{95\\% Confidence Interval}} & \\textbf{*Std. Dev.} \\\\
\\hline
""";
final var str = fmt.formatted(runner.getDescription(), runner.getResultsTableId());
return new StringBuilder(str);
}
/**
* Creates a row for the latex table containing the result metrics
* @param latex the StringBuilder where the latex table is being built
* @param ci {@link ConfidenceInterval} summarizing results for this metric
*/
private void latexRow(final StringBuilder latex, final ConfidenceInterval ci) {
final var COL_SEPARATOR = " & ";
//if there is only one metric sample, it doesn't show the ± symbol (latex \pm), since there is no error margin
final var errorMargin = ci.isComputed() ? " & $\\pm$ %.2f".formatted(ci.getErrorMargin()) : COL_SEPARATOR;
//If there is a % in the metric name, that needs to be escaped to show on Latex, since % starts a Latex comment
final var escapedMetricName = StringUtils.replace(ci.getMetricName(),"%", "\\%");
latex.append(escapedMetricName)
.append(COL_SEPARATOR)
.append("%.2f".formatted(ci.getValue()))
.append(errorMargin)
.append(COL_SEPARATOR)
.append("%.2f".formatted(ci.getStdDev()))
.append("\\\\ \\hline\n");
}
}
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