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/*
* Copyright (c) 2024 Jacek Centkowski <geminica.programs@gmail.com> and others.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Distribution License v. 1.0 which is available at
* https://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
package org.eclipse.jgit.internal.storage.file;
import static org.junit.Assert.assertEquals;
import java.io.IOException;
import java.nio.file.Files;
import java.util.Collection;
import java.util.stream.StreamSupport;
import org.eclipse.jgit.internal.storage.file.GC.RepoStatistics;
import org.eclipse.jgit.lib.PersonIdent;
import org.eclipse.jgit.revwalk.RevCommit;
import org.eclipse.jgit.storage.pack.PackConfig;
import org.junit.Test;
public class GcSinceBitmapStatisticsTest extends GcTestCase {
@Test
public void testShouldReportZeroPacksAndObjectsForInitializedRepo()
throws IOException {
RepoStatistics s = gc.getStatistics();
assertEquals(0L, s.numberOfPackFilesSinceBitmap);
assertEquals(0L, s.numberOfObjectsSinceBitmap);
}
@Test
public void testShouldReportAllPackFilesWhenNoGcWasPerformed()
throws Exception {
tr.packAndPrune();
long result = gc.getStatistics().numberOfPackFilesSinceBitmap;
assertEquals(repo.getObjectDatabase().getPacks().size(), result);
}
@Test
public void testShouldReportAllObjectsWhenNoGcWasPerformed()
throws Exception {
tr.packAndPrune();
assertEquals(
getNumberOfObjectsInPacks(repo.getObjectDatabase().getPacks()),
gc.getStatistics().numberOfObjectsSinceBitmap);
}
@Test
public void testShouldReportNoPacksFilesSinceBitmapWhenPackfilesAreOlderThanBitmapFile()
throws Exception {
addCommit(null);
configureGC(/* buildBitmap */ false).gc().get();
assertEquals(1L, gc.getStatistics().numberOfPackFiles);
assertEquals(0L, repositoryBitmapFiles());
assertEquals(1L, gc.getStatistics().numberOfPackFilesSinceBitmap);
addCommit(null);
configureGC(/* buildBitmap */ true).gc().get();
assertEquals(1L, repositoryBitmapFiles());
assertEquals(2L, gc.getStatistics().numberOfPackFiles);
assertEquals(0L, gc.getStatistics().numberOfPackFilesSinceBitmap);
}
@Test
public void testShouldReportNoObjectsDirectlyAfterGc() throws Exception {
// given
addCommit(null);
assertEquals(2L, gc.getStatistics().numberOfObjectsSinceBitmap);
gc.gc().get();
assertEquals(0L, gc.getStatistics().numberOfObjectsSinceBitmap);
}
@Test
public void testShouldReportNewPacksSinceGcWhenRepositoryProgresses()
throws Exception {
// commit & gc
RevCommit parent = addCommit(null);
gc.gc().get();
assertEquals(1L, repositoryBitmapFiles());
// progress & pack
addCommit(parent);
assertEquals(1L, gc.getStatistics().numberOfPackFiles);
assertEquals(0L, gc.getStatistics().numberOfPackFilesSinceBitmap);
tr.packAndPrune();
assertEquals(2L, gc.getStatistics().numberOfPackFiles);
assertEquals(1L, gc.getStatistics().numberOfPackFilesSinceBitmap);
}
@Test
public void testShouldReportNewObjectsSinceGcWhenRepositoryProgresses()
throws Exception {
// commit & gc
RevCommit parent = addCommit(null);
gc.gc().get();
assertEquals(0L, gc.getStatistics().numberOfLooseObjects);
assertEquals(0L, gc.getStatistics().numberOfObjectsSinceBitmap);
// progress & pack
addCommit(parent);
assertEquals(1L, gc.getStatistics().numberOfLooseObjects);
assertEquals(1L, gc.getStatistics().numberOfObjectsSinceBitmap);
tr.packAndPrune();
assertEquals(0L, gc.getStatistics().numberOfLooseObjects);
// Number of objects contained in the newly created PackFile
assertEquals(3L, gc.getStatistics().numberOfObjectsSinceBitmap);
}
@Test
public void testShouldReportNewPacksFromTheLatestBitmapWhenRepositoryProgresses()
throws Exception {
// commit & gc
RevCommit parent = addCommit(null);
gc.gc().get();
assertEquals(1L, repositoryBitmapFiles());
// progress & gc
parent = addCommit(parent);
gc.gc().get();
assertEquals(2L, repositoryBitmapFiles());
// progress & pack
addCommit(parent);
tr.packAndPrune();
assertEquals(1L, gc.getStatistics().numberOfPackFilesSinceBitmap);
}
@Test
public void testShouldReportNewObjectsFromTheLatestBitmapWhenRepositoryProgresses()
throws Exception {
// commit & gc
RevCommit parent = addCommit(null);
gc.gc().get();
// progress & gc
parent = addCommit(parent);
gc.gc().get();
assertEquals(0L, gc.getStatistics().numberOfObjectsSinceBitmap);
// progress & pack
addCommit(parent);
assertEquals(1L, gc.getStatistics().numberOfObjectsSinceBitmap);
tr.packAndPrune();
assertEquals(4L, gc.getStatistics().numberOfObjectsSinceBitmap);
}
private RevCommit addCommit(RevCommit parent) throws Exception {
return tr.branch("master").commit()
.author(new PersonIdent("repo-metrics", "repo@metrics.com"))
.parent(parent).create();
}
private long repositoryBitmapFiles() throws IOException {
return StreamSupport
.stream(Files
.newDirectoryStream(repo.getObjectDatabase()
.getPackDirectory().toPath(), "pack-*.bitmap")
.spliterator(), false)
.count();
}
private long getNumberOfObjectsInPacks(Collection<Pack> packs) {
return packs.stream().mapToLong(pack -> {
try {
return pack.getObjectCount();
} catch (IOException e) {
throw new RuntimeException(e);
}
}).sum();
}
private GC configureGC(boolean buildBitmap) {
PackConfig pc = new PackConfig(repo.getObjectDatabase().getConfig());
pc.setBuildBitmaps(buildBitmap);
gc.setPackConfig(pc);
return gc;
}
}
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