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/*
* SonarQube
* Copyright (C) 2009-2025 SonarSource SA
* mailto:info AT sonarsource DOT com
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3 of the License, or (at your option) any later version.
*
* This program 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
package org.sonar.db.purge;
import com.google.common.annotations.VisibleForTesting;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import org.sonar.api.utils.TimeUtils;
public class PurgeProfiler {
private final Map<String, Long> durations = new HashMap<>();
private long startTime;
private String currentTable;
private final Clock clock;
public PurgeProfiler() {
this(new Clock());
}
@VisibleForTesting
PurgeProfiler(Clock clock) {
this.clock = clock;
}
public void reset() {
durations.clear();
}
void start(String table) {
this.startTime = clock.now();
this.currentTable = table;
}
void stop() {
Long cumulatedDuration = durations.getOrDefault(currentTable, 0L);
durations.put(currentTable, cumulatedDuration + (clock.now() - startTime));
}
public List<String> getProfilingResult(long totalTime) {
List<Entry<String, Long>> data = new ArrayList<>(durations.entrySet());
data.sort((o1, o2) -> o2.getValue().compareTo(o1.getValue()));
double percent = totalTime / 100.0;
return truncateList(data).stream().map( entry ->
" o " + entry.getKey() + ": " + TimeUtils.formatDuration(entry.getValue()) +
" (" + (int) (entry.getValue() / percent) + "%)"
).toList();
}
private static List<Entry<String, Long>> truncateList(List<Entry<String, Long>> sortedFullList) {
int maxSize = 10;
List<Entry<String, Long>> result = new ArrayList<>(maxSize);
int i = 0;
for (Entry<String, Long> item : sortedFullList) {
if (i++ >= maxSize || item.getValue() == 0) {
return result;
}
result.add(item);
}
return result;
}
static class Clock {
public long now() {
return System.currentTimeMillis();
}
}
}
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