Merge branch 'stable-4.5' into stable-4.6
* stable-4.5: Fix exception handling for opening bitmap index files Change-Id: Ifb511238e3e98b1bc9f79a990807b940a17ebaa6 Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
This commit is contained in:
commit
985e3c6414
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@ -45,8 +45,12 @@
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import static java.lang.Integer.valueOf;
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import static org.junit.Assert.assertEquals;
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import static org.junit.Assert.assertNotEquals;
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import static org.junit.Assert.assertNotNull;
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import java.io.IOException;
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import java.util.Collection;
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import java.util.Collections;
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import java.util.concurrent.BrokenBarrierException;
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import java.util.concurrent.Callable;
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import java.util.concurrent.CyclicBarrier;
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@ -56,8 +60,14 @@
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import java.util.concurrent.TimeUnit;
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import org.eclipse.jgit.internal.JGitText;
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import org.eclipse.jgit.internal.storage.pack.PackWriter;
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import org.eclipse.jgit.junit.TestRepository;
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import org.eclipse.jgit.lib.EmptyProgressMonitor;
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import org.eclipse.jgit.lib.NullProgressMonitor;
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import org.eclipse.jgit.lib.ObjectId;
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import org.eclipse.jgit.lib.Sets;
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import org.eclipse.jgit.revwalk.RevBlob;
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import org.eclipse.jgit.revwalk.RevCommit;
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import org.junit.Test;
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public class GcConcurrentTest extends GcTestCase {
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@ -116,4 +126,97 @@ public Integer call() throws Exception {
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pool.awaitTermination(Long.MAX_VALUE, TimeUnit.SECONDS);
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}
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}
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@Test
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public void repackAndGetStats() throws Exception {
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TestRepository<FileRepository>.BranchBuilder test = tr.branch("test");
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test.commit().add("a", "a").create();
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GC gc1 = new GC(tr.getRepository());
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gc1.setPackExpireAgeMillis(0);
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gc1.gc();
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test.commit().add("b", "b").create();
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// Create a new Repository instance and trigger a gc
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// from that instance. Reusing the existing repo instance
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// tr.getRepository() would not show the problem.
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FileRepository r2 = new FileRepository(
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tr.getRepository().getDirectory());
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GC gc2 = new GC(r2);
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gc2.setPackExpireAgeMillis(0);
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gc2.gc();
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new GC(tr.getRepository()).getStatistics();
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}
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@Test
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public void repackAndUploadPack() throws Exception {
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TestRepository<FileRepository>.BranchBuilder test = tr.branch("test");
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// RevCommit a = test.commit().add("a", "a").create();
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test.commit().add("a", "a").create();
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GC gc1 = new GC(tr.getRepository());
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gc1.setPackExpireAgeMillis(0);
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gc1.gc();
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RevCommit b = test.commit().add("b", "b").create();
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FileRepository r2 = new FileRepository(
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tr.getRepository().getDirectory());
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GC gc2 = new GC(r2);
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gc2.setPackExpireAgeMillis(0);
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gc2.gc();
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// Simulate parts of an UploadPack. This is the situation on
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// server side (e.g. gerrit) when when clients are
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// cloning/fetching while the server side repo's
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// are gc'ed by an external process (e.g. scheduled
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// native git gc)
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try (PackWriter pw = new PackWriter(tr.getRepository())) {
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pw.setUseBitmaps(true);
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pw.preparePack(NullProgressMonitor.INSTANCE, Sets.of(b),
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Collections.<ObjectId> emptySet());
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new GC(tr.getRepository()).getStatistics();
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}
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}
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PackFile getSinglePack(FileRepository r) {
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Collection<PackFile> packs = r.getObjectDatabase().getPacks();
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assertEquals(1, packs.size());
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return packs.iterator().next();
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}
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@Test
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public void repackAndCheckBitmapUsage() throws Exception {
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// create a test repository with one commit and pack all objects. After
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// packing create loose objects to trigger creation of a new packfile on
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// the next gc
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TestRepository<FileRepository>.BranchBuilder test = tr.branch("test");
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test.commit().add("a", "a").create();
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FileRepository repository = tr.getRepository();
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GC gc1 = new GC(repository);
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gc1.setPackExpireAgeMillis(0);
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gc1.gc();
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String oldPackName = getSinglePack(repository).getPackName();
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RevCommit b = test.commit().add("b", "b").create();
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// start the garbage collection on a new repository instance,
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FileRepository repository2 = new FileRepository(repository.getDirectory());
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GC gc2 = new GC(repository2);
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gc2.setPackExpireAgeMillis(0);
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gc2.gc();
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String newPackName = getSinglePack(repository2).getPackName();
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// make sure gc() has caused creation of a new packfile
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assertNotEquals(oldPackName, newPackName);
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// Even when asking again for the set of packfiles outdated data
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// will be returned. As long as the repository can work on cached data
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// it will do so and not detect that a new packfile exists.
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assertNotEquals(getSinglePack(repository).getPackName(), newPackName);
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// Only when accessing object content it is required to rescan the pack
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// directory and the new packfile will be detected.
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repository.getObjectDatabase().open(b).getSize();
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assertEquals(getSinglePack(repository).getPackName(), newPackName);
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assertNotNull(getSinglePack(repository).getBitmapIndex());
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}
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}
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@ -1105,8 +1105,17 @@ synchronized PackBitmapIndex getBitmapIndex() throws IOException {
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if (invalid || invalidBitmap)
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return null;
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if (bitmapIdx == null && hasExt(BITMAP_INDEX)) {
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final PackBitmapIndex idx = PackBitmapIndex.open(
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extFile(BITMAP_INDEX), idx(), getReverseIdx());
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final PackBitmapIndex idx;
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try {
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idx = PackBitmapIndex.open(extFile(BITMAP_INDEX), idx(),
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getReverseIdx());
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} catch (FileNotFoundException e) {
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// Once upon a time this bitmap file existed. Now it
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// has been removed. Most likely an external gc has
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// removed this packfile and the bitmap
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invalidBitmap = true;
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return null;
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}
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// At this point, idx() will have set packChecksum.
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if (Arrays.equals(packChecksum, idx.packChecksum))
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