/*
* Copyright (C) 2012, Christian Halstrick <christian.halstrick@sap.com>
* and other copyright owners as documented in the project's IP log.
*
* This program and the accompanying materials are made available
* under the terms of the Eclipse Distribution License v1.0 which
* accompanies this distribution, is reproduced below, and is
* available at http://www.eclipse.org/org/documents/edl-v10.php
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
*
* - Neither the name of the Eclipse Foundation, Inc. nor the
* names of its contributors may be used to endorse or promote
* products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.eclipse.jgit.internal.storage.file;
import static org.junit.Assert.assertEquals;
import java.io.File;
import java.io.IOException;
import java.util.Collection;
import java.util.Date;
import java.util.Iterator;
import org.eclipse.jgit.junit.TestRepository.BranchBuilder;
import org.eclipse.jgit.revwalk.RevCommit;
import org.eclipse.jgit.storage.pack.PackConfig;
import org.junit.Test;
import org.junit.experimental.theories.DataPoints;
import org.junit.experimental.theories.Theories;
import org.junit.experimental.theories.Theory;
import org.junit.runner.RunWith;
@RunWith(Theories.class)
public class GcBasicPackingTest extends GcTestCase {
@DataPoints
public static boolean[] aggressiveValues = { true, false };
@Theory
public void repackEmptyRepo_noPackCreated(boolean aggressive)
throws IOException {
configureGc(gc, aggressive);
gc.repack();
assertEquals(0, repo.getObjectDatabase().getPacks().size());
}
@Theory
public void testPackRepoWithNoRefs(boolean aggressive) throws Exception {
tr.commit().add("A", "A").add("B", "B").create();
stats = gc.getStatistics();
assertEquals(4, stats.numberOfLooseObjects);
assertEquals(0, stats.numberOfPackedObjects);
configureGc(gc, aggressive);
gc.gc();
stats = gc.getStatistics();
assertEquals(4, stats.numberOfLooseObjects);
assertEquals(0, stats.numberOfPackedObjects);
assertEquals(0, stats.numberOfPackFiles);
assertEquals(0, stats.numberOfBitmaps);
}
@Theory
public void testPack2Commits(boolean aggressive) throws Exception {
BranchBuilder bb = tr.branch("refs/heads/master");
bb.commit().add("A", "A").add("B", "B").create();
bb.commit().add("A", "A2").add("B", "B2").create();
stats = gc.getStatistics();
assertEquals(8, stats.numberOfLooseObjects);
assertEquals(0, stats.numberOfPackedObjects);
configureGc(gc, aggressive);
gc.gc();
stats = gc.getStatistics();
assertEquals(0, stats.numberOfLooseObjects);
assertEquals(8, stats.numberOfPackedObjects);
assertEquals(1, stats.numberOfPackFiles);
assertEquals(2, stats.numberOfBitmaps);
}
@Theory
public void testPackAllObjectsInOnePack(boolean aggressive)
throws Exception {
tr.branch("refs/heads/master").commit().add("A", "A").add("B", "B")
.create();
stats = gc.getStatistics();
assertEquals(4, stats.numberOfLooseObjects);
assertEquals(0, stats.numberOfPackedObjects);
configureGc(gc, aggressive);
gc.gc();
stats = gc.getStatistics();
assertEquals(0, stats.numberOfLooseObjects);
assertEquals(4, stats.numberOfPackedObjects);
assertEquals(1, stats.numberOfPackFiles);
assertEquals(1, stats.numberOfBitmaps);
// Do the gc again and check that it hasn't changed anything
gc.gc();
stats = gc.getStatistics();
assertEquals(0, stats.numberOfLooseObjects);
assertEquals(4, stats.numberOfPackedObjects);
assertEquals(1, stats.numberOfPackFiles);
assertEquals(1, stats.numberOfBitmaps);
}
@Theory
public void testPackCommitsAndLooseOne(boolean aggressive)
throws Exception {
BranchBuilder bb = tr.branch("refs/heads/master");
RevCommit first = bb.commit().add("A", "A").add("B", "B").create();
bb.commit().add("A", "A2").add("B", "B2").create();
tr.update("refs/heads/master", first);
stats = gc.getStatistics();
assertEquals(8, stats.numberOfLooseObjects);
assertEquals(0, stats.numberOfPackedObjects);
configureGc(gc, aggressive);
gc.gc();
stats = gc.getStatistics();
assertEquals(0, stats.numberOfLooseObjects);
assertEquals(8, stats.numberOfPackedObjects);
assertEquals(2, stats.numberOfPackFiles);
assertEquals(1, stats.numberOfBitmaps);
}
@Theory
public void testNotPackTwice(boolean aggressive) throws Exception {
BranchBuilder bb = tr.branch("refs/heads/master");
RevCommit first = bb.commit().message("M").add("M", "M").create();
bb.commit().message("B").add("B", "Q").create();
bb.commit().message("A").add("A", "A").create();
RevCommit second = tr.commit().parent(first).message("R").add("R", "Q")
.create();
tr.update("refs/tags/t1", second);
Collection<PackFile> oldPacks = tr.getRepository().getObjectDatabase()
.getPacks();
assertEquals(0, oldPacks.size());
stats = gc.getStatistics();
assertEquals(11, stats.numberOfLooseObjects);
assertEquals(0, stats.numberOfPackedObjects);
gc.setExpireAgeMillis(0);
fsTick();
configureGc(gc, aggressive);
gc.gc();
stats = gc.getStatistics();
assertEquals(0, stats.numberOfLooseObjects);
Iterator<PackFile> pIt = repo.getObjectDatabase().getPacks().iterator();
long c = pIt.next().getObjectCount();
if (c == 9)
assertEquals(2, pIt.next().getObjectCount());
else {
assertEquals(2, c);
assertEquals(9, pIt.next().getObjectCount());
}
}
@Test
public void testDonePruneTooYoungPacks() throws Exception {
BranchBuilder bb = tr.branch("refs/heads/master");
bb.commit().message("M").add("M", "M").create();
gc.setExpireAgeMillis(0);
gc.gc();
stats = gc.getStatistics();
assertEquals(0, stats.numberOfLooseObjects);
assertEquals(3, stats.numberOfPackedObjects);
assertEquals(1, stats.numberOfPackFiles);
File oldPackfile = tr.getRepository().getObjectDatabase().getPacks()
.iterator().next().getPackFile();
fsTick();
bb.commit().message("B").add("B", "Q").create();
// The old packfile is too young to be deleted. We should end up with
// two pack files
gc.setExpire(new Date(oldPackfile.lastModified() - 1));
gc.gc();
stats = gc.getStatistics();
assertEquals(0, stats.numberOfLooseObjects);
// if objects exist in multiple packFiles then they are counted multiple
// times
assertEquals(9, stats.numberOfPackedObjects);
assertEquals(2, stats.numberOfPackFiles);
// repack again but now without a grace period for loose objects. Since
// we don't have loose objects anymore this shouldn't change anything
gc.setExpireAgeMillis(0);
gc.gc();
stats = gc.getStatistics();
assertEquals(0, stats.numberOfLooseObjects);
// if objects exist in multiple packFiles then they are counted multiple
// times
assertEquals(9, stats.numberOfPackedObjects);
assertEquals(2, stats.numberOfPackFiles);
// repack again but now without a grace period for packfiles. We should
// end up with one packfile
gc.setPackExpireAgeMillis(0);
gc.gc();
stats = gc.getStatistics();
assertEquals(0, stats.numberOfLooseObjects);
// if objects exist in multiple packFiles then they are counted multiple
// times
assertEquals(6, stats.numberOfPackedObjects);
assertEquals(1, stats.numberOfPackFiles);
}
private void configureGc(GC myGc, boolean aggressive) {
PackConfig pconfig = new PackConfig(repo);
if (aggressive) {
pconfig.setDeltaSearchWindowSize(250);
pconfig.setMaxDeltaDepth(250);
pconfig.setReuseObjects(false);
} else
pconfig = new PackConfig(repo);
myGc.setPackConfig(pconfig);
}
}