Fix status in index entries after checkout of paths
The checkout command was producing an inconsistent state of the index which even confuses native git. The content sha1 of the touched index entries was updated, but the length and the filemode was not updated. Later in coding the index entries got automatically corrected (through Dircache.checkoutEntry()) but the correction was after persisting the index to disk. So, the correction was lost and we ended up with an index where length and sha1 don't fit together. A similar problem is fixed with "lastModified" of DircacheEntry. When checking out a path without specifying an explicit commit (you want to checkout what's in the index) the index was not updated regarding lastModified. Readers of the index will think the checked-out file is dirty because the file has a younger lastmodified then what's in the index. Change-Id: Ifc6d806fbf96f53c94d9ded0befcc932d943aa04 Signed-off-by: Christian Halstrick <christian.halstrick@sap.com> Signed-off-by: Jens Baumgart <jens.baumgart@sap.com> Bug: 355205
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1230d353d8
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@ -45,7 +45,12 @@
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import static org.junit.Assert.assertEquals;
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import java.io.File;
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import java.io.IOException;
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import org.eclipse.jgit.dircache.DirCache;
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import org.eclipse.jgit.dircache.DirCacheEntry;
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import org.eclipse.jgit.errors.NoWorkTreeException;
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import org.eclipse.jgit.lib.ObjectReader;
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import org.eclipse.jgit.lib.RepositoryTestCase;
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import org.eclipse.jgit.revwalk.RevCommit;
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import org.junit.Before;
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@ -60,6 +65,8 @@ public class PathCheckoutCommandTest extends RepositoryTestCase {
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private static final String FILE2 = "Test2.txt";
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private static final String FILE3 = "Test3.txt";
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Git git;
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RevCommit initialCommit;
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@ -148,4 +155,49 @@ public void testUpdateWorkingDirectoryFromHeadWithIndexChange()
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assertEquals("c", read(new File(db.getWorkTree(), FILE2)));
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}
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@Test
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public void testUpdateWorkingDirectoryFromIndex2() throws Exception {
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CheckoutCommand co = git.checkout();
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fsTick(git.getRepository().getIndexFile());
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File written1 = writeTrashFile(FILE1, "3(modified)");
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File written2 = writeTrashFile(FILE2, "a(modified)");
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fsTick(written2);
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// make sure that we get unsmudged entries for FILE1 and FILE2
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writeTrashFile(FILE3, "foo");
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git.add().addFilepattern(FILE3).call();
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fsTick(git.getRepository().getIndexFile());
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git.add().addFilepattern(FILE1).addFilepattern(FILE2).call();
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fsTick(git.getRepository().getIndexFile());
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writeTrashFile(FILE1, "3(modified again)");
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writeTrashFile(FILE2, "a(modified again)");
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fsTick(written2);
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co.addPath(FILE1).setStartPoint(secondCommit).call();
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assertEquals("2", read(written1));
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assertEquals("a(modified again)", read(written2));
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validateIndex(git);
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}
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public static void validateIndex(Git git) throws NoWorkTreeException,
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IOException {
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DirCache dc = git.getRepository().lockDirCache();
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ObjectReader r = git.getRepository().getObjectDatabase().newReader();
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try {
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for (int i = 0; i < dc.getEntryCount(); ++i) {
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DirCacheEntry entry = dc.getEntry(i);
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if (entry.getLength() > 0)
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assertEquals(entry.getLength(), r.getObjectSize(
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entry.getObjectId(), ObjectReader.OBJ_ANY));
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}
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} finally {
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dc.unlock();
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r.release();
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}
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}
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}
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@ -65,6 +65,7 @@
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import org.eclipse.jgit.errors.CheckoutConflictException;
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import org.eclipse.jgit.lib.AnyObjectId;
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import org.eclipse.jgit.lib.Constants;
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import org.eclipse.jgit.lib.FileMode;
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import org.eclipse.jgit.lib.ObjectId;
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import org.eclipse.jgit.lib.ObjectReader;
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import org.eclipse.jgit.lib.Ref;
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@ -245,40 +246,42 @@ protected CheckoutCommand checkoutPaths() throws IOException,
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RevWalk revWalk = new RevWalk(repo);
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DirCache dc = repo.lockDirCache();
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try {
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TreeWalk treeWalk = new TreeWalk(revWalk.getObjectReader());
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treeWalk.setRecursive(true);
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treeWalk.addTree(new DirCacheIterator(dc));
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treeWalk.setFilter(PathFilterGroup.createFromStrings(paths));
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List<String> files = new LinkedList<String>();
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while (treeWalk.next())
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files.add(treeWalk.getPathString());
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if (startCommit != null || startPoint != null) {
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DirCacheEditor editor = dc.editor();
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TreeWalk startWalk = new TreeWalk(revWalk.getObjectReader());
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startWalk.setRecursive(true);
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startWalk.setFilter(treeWalk.getFilter());
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startWalk.setFilter(PathFilterGroup.createFromStrings(paths));
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boolean checkoutIndex = startCommit == null && startPoint == null;
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if (!checkoutIndex)
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startWalk.addTree(revWalk.parseCommit(getStartPoint())
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.getTree());
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else
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startWalk.addTree(new DirCacheIterator(dc));
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final File workTree = repo.getWorkTree();
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final ObjectReader r = repo.getObjectDatabase().newReader();
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try {
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while (startWalk.next()) {
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final ObjectId blobId = startWalk.getObjectId(0);
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final FileMode mode = startWalk.getFileMode(0);
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editor.add(new PathEdit(startWalk.getPathString()) {
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public void apply(DirCacheEntry ent) {
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ent.setObjectId(blobId);
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ent.setFileMode(mode);
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try {
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DirCacheCheckout.checkoutEntry(repo, new File(
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workTree, ent.getPathString()), ent, r);
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} catch (IOException e) {
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throw new JGitInternalException(
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MessageFormat.format(
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JGitText.get().checkoutConflictWithFile,
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ent.getPathString()), e);
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}
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}
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});
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}
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editor.commit();
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}
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File workTree = repo.getWorkTree();
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ObjectReader r = repo.getObjectDatabase().newReader();
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try {
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for (String file : files)
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DirCacheCheckout.checkoutEntry(repo, new File(workTree,
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file), dc.getEntry(file), r);
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} finally {
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startWalk.release();
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r.release();
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}
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} finally {
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