/*
* Copyright 2015 Ben Manes. 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.github.benmanes.caffeine.cache.simulator.report;
import java.io.StringWriter;
import java.util.List;
import java.util.concurrent.TimeUnit;
import com.github.benmanes.caffeine.cache.simulator.policy.PolicyStats;
import com.typesafe.config.Config;
import com.univocity.parsers.csv.CsvWriter;
import com.univocity.parsers.csv.CsvWriterSettings;
/**
* A plain text report that prints comma-separated values.
*
* @author ben.manes@gmail.com (Ben Manes)
*/
public final class CsvReporter extends TextReporter {
public CsvReporter(Config config) {
super(config);
}
@Override
protected String assemble(List<PolicyStats> results) {
StringWriter output = new StringWriter();
CsvWriter writer = new CsvWriter(output, new CsvWriterSettings());
writer.writeHeaders(headers());
for (PolicyStats policyStats : results) {
Object[] data = new Object[] {
policyStats.name(),
String.format("%.2f", 100 * policyStats.hitRate()),
policyStats.hitCount(),
policyStats.missCount(),
policyStats.requestCount(),
policyStats.evictionCount(),
String.format("%.2f", 100 * policyStats.admissionRate()),
(policyStats.operationCount() == 0) ? null : policyStats.operationCount(),
policyStats.stopwatch().elapsed(TimeUnit.MILLISECONDS)
};
writer.writeRow(data);
}
writer.close();
return output.toString();
}
}