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Merge "Don't delete .idx file if .pack file can't be deleted"

stable-3.3
Robin Rosenberg 11 years ago committed by Gerrit Code Review @ Eclipse.org
parent
commit
216d9981f5
  1. 36
      org.eclipse.jgit.test/tst/org/eclipse/jgit/internal/storage/file/GCTest.java
  2. 57
      org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/file/GC.java

36
org.eclipse.jgit.test/tst/org/eclipse/jgit/internal/storage/file/GCTest.java

@ -49,6 +49,7 @@ import static org.junit.Assert.assertSame;
import static org.junit.Assert.assertTrue;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.Collection;
import java.util.Collections;
@ -66,6 +67,7 @@ import org.eclipse.jgit.api.Git;
import org.eclipse.jgit.internal.JGitText;
import org.eclipse.jgit.internal.storage.file.GC.RepoStatistics;
import org.eclipse.jgit.internal.storage.file.PackIndex.MutableEntry;
import org.eclipse.jgit.internal.storage.pack.PackExt;
import org.eclipse.jgit.junit.LocalDiskRepositoryTestCase;
import org.eclipse.jgit.junit.RepositoryTestCase;
import org.eclipse.jgit.junit.TestRepository;
@ -620,6 +622,40 @@ public class GCTest extends LocalDiskRepositoryTestCase {
assertEquals(2, stats.numberOfPackFiles);
}
@Test
public void testPruneOldPacksWithOpenHandleOnPack() throws Exception {
gc.setExpireAgeMillis(0);
BranchBuilder bb = tr.branch("refs/heads/master");
bb.commit().add("A", "A").add("B", "B").create();
fsTick();
gc.gc();
Collection<PackFile> packs = repo.getObjectDatabase().getPacks();
assertEquals(1, packs.size());
PackFile pack = packs.iterator().next();
File packFile = pack.getPackFile();
File indexFile = new File(packFile.getParentFile(), "pack-"
+ pack.getPackName()
+ "."
+ PackExt.INDEX.getExtension());
FileInputStream fis = new FileInputStream(packFile);
try {
bb.commit().add("A", "A2").add("B", "B2").create();
fsTick();
gc.gc();
if (packFile.exists()) {
assertTrue(
"The pack was present but the index file was missing.",
indexFile.exists());
}
} finally {
fis.close();
}
}
@Test
public void testPackCommitsAndLooseOneWithPruneNowNoReflog()
throws Exception {

57
org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/file/GC.java

@ -175,21 +175,9 @@ public class GC {
*
* @param oldPacks
* @param newPacks
* @param ignoreErrors
* <code>true</code> if we should ignore the fact that a certain
* pack files or index files couldn't be deleted.
* <code>false</code> if an exception should be thrown in such
* cases
* @throws IOException
* if a pack file couldn't be deleted and
* <code>ignoreErrors</code> is set to <code>false</code>
*/
private void deleteOldPacks(Collection<PackFile> oldPacks,
Collection<PackFile> newPacks, boolean ignoreErrors)
throws IOException {
int deleteOptions = FileUtils.RETRY | FileUtils.SKIP_MISSING;
if (ignoreErrors)
deleteOptions |= FileUtils.IGNORE_ERRORS;
Collection<PackFile> newPacks) {
oldPackLoop: for (PackFile oldPack : oldPacks) {
String oldName = oldPack.getPackName();
// check whether an old pack file is also among the list of new
@ -200,10 +188,7 @@ public class GC {
if (!oldPack.shouldBeKept()) {
oldPack.close();
for (PackExt ext : PackExt.values()) {
File f = nameFor(oldName, "." + ext.getExtension()); //$NON-NLS-1$
FileUtils.delete(f, deleteOptions);
}
prunePack(oldName);
}
}
// close the complete object database. Thats my only chance to force
@ -211,6 +196,42 @@ public class GC {
repo.getObjectDatabase().close();
}
/**
* Delete files associated with a single pack file. First try to delete the
* ".pack" file because on some platforms the ".pack" file may be locked and
* can't be deleted. In such a case it is better to detect this early and
* give up on deleting files for this packfile. Otherwise we may delete the
* ".index" file and when failing to delete the ".pack" file we are left
* with a ".pack" file without a ".index" file.
*
* @param packName
*/
private void prunePack(String packName) {
PackExt[] extensions = PackExt.values();
try {
// Delete the .pack file first and if this fails give up on deleting
// the other files
int deleteOptions = FileUtils.RETRY | FileUtils.SKIP_MISSING;
for (PackExt ext : extensions)
if (PackExt.PACK.equals(ext)) {
File f = nameFor(packName, "." + ext.getExtension()); //$NON-NLS-1$
FileUtils.delete(f, deleteOptions);
break;
}
// The .pack file has been deleted. Delete as many as the other
// files as you can.
deleteOptions |= FileUtils.IGNORE_ERRORS;
for (PackExt ext : extensions) {
if (!PackExt.PACK.equals(ext)) {
File f = nameFor(packName, "." + ext.getExtension()); //$NON-NLS-1$
FileUtils.delete(f, deleteOptions);
}
}
} catch (IOException e) {
// Deletion of the .pack file failed. Silently return.
}
}
/**
* Like "git prune-packed" this method tries to prune all loose objects
* which can be found in packs. If certain objects can't be pruned (e.g.
@ -533,7 +554,7 @@ public class GC {
if (rest != null)
ret.add(rest);
}
deleteOldPacks(toBeDeleted, ret, true);
deleteOldPacks(toBeDeleted, ret);
prunePacked();
lastPackedRefs = refsBefore;

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