Improve handling of checkout conflicts
This converts a checkout conflict exception into a RebaseResult / MergeResult containing the conflicting paths, which enables EGit (or others) to handle the situation in a user-friendly way Change-Id: I48d9bdcc1e98095576513a54a225a42409f301f3
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@ -1059,7 +1059,6 @@ public void testRebaseWithUntrackedFile() throws Exception {
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}
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@Test
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@SuppressWarnings("null")
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public void testRebaseWithUnstagedTopicChange() throws Exception {
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// create file1, add and commit
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writeTrashFile(FILE1, "file1");
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@ -1084,19 +1083,14 @@ public void testRebaseWithUnstagedTopicChange() throws Exception {
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writeTrashFile("file2", "unstaged file2");
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// rebase
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JGitInternalException exception = null;
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try {
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git.rebase().setUpstream("refs/heads/master").call();
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} catch (JGitInternalException e) {
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exception = e;
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}
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assertNotNull(exception);
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assertEquals("Checkout conflict with files: \nfile2",
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exception.getMessage());
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RebaseResult result = git.rebase().setUpstream("refs/heads/master")
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.call();
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assertEquals(Status.CONFLICTS, result.getStatus());
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assertEquals(1, result.getConflicts().size());
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assertEquals("file2", result.getConflicts().get(0));
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}
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@Test
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@SuppressWarnings("null")
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public void testRebaseWithUncommittedTopicChange() throws Exception {
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// create file1, add and commit
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writeTrashFile(FILE1, "file1");
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@ -1122,23 +1116,17 @@ public void testRebaseWithUncommittedTopicChange() throws Exception {
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git.add().addFilepattern("file2").call();
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// do not commit
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// rebase
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JGitInternalException exception = null;
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try {
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git.rebase().setUpstream("refs/heads/master").call();
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} catch (JGitInternalException e) {
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exception = e;
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}
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assertNotNull(exception);
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assertEquals("Checkout conflict with files: \nfile2",
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exception.getMessage());
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RebaseResult result = git.rebase().setUpstream("refs/heads/master")
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.call();
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assertEquals(Status.CONFLICTS, result.getStatus());
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assertEquals(1, result.getConflicts().size());
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assertEquals("file2", result.getConflicts().get(0));
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checkFile(uncommittedFile, "uncommitted file2");
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assertEquals(RepositoryState.SAFE, git.getRepository().getRepositoryState());
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}
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@Test
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@SuppressWarnings("null")
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public void testRebaseWithUnstagedMasterChange() throws Exception {
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// create file1, add and commit
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writeTrashFile(FILE1, "file1");
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@ -1163,19 +1151,14 @@ public void testRebaseWithUnstagedMasterChange() throws Exception {
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writeTrashFile(FILE1, "unstaged modified file1");
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// rebase
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JGitInternalException exception = null;
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try {
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git.rebase().setUpstream("refs/heads/master").call();
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} catch (JGitInternalException e) {
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exception = e;
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}
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assertNotNull(exception);
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assertEquals("Checkout conflict with files: \nfile1",
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exception.getMessage());
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RebaseResult result = git.rebase().setUpstream("refs/heads/master")
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.call();
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assertEquals(Status.CONFLICTS, result.getStatus());
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assertEquals(1, result.getConflicts().size());
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assertEquals(FILE1, result.getConflicts().get(0));
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}
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@Test
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@SuppressWarnings("null")
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public void testRebaseWithUncommittedMasterChange() throws Exception {
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// create file1, add and commit
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writeTrashFile(FILE1, "file1");
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@ -1202,15 +1185,11 @@ public void testRebaseWithUncommittedMasterChange() throws Exception {
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// do not commit
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// rebase
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JGitInternalException exception = null;
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try {
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git.rebase().setUpstream("refs/heads/master").call();
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} catch (JGitInternalException e) {
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exception = e;
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}
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assertNotNull(exception);
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assertEquals("Checkout conflict with files: \nfile1",
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exception.getMessage());
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RebaseResult result = git.rebase().setUpstream("refs/heads/master")
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.call();
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assertEquals(Status.CONFLICTS, result.getStatus());
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assertEquals(1, result.getConflicts().size());
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assertEquals(FILE1, result.getConflicts().get(0));
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}
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@Test
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@ -1496,14 +1475,13 @@ public void testRebaseShouldLeaveWorkspaceUntouchedWithUnstagedChangesConflict()
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File theFile = writeTrashFile(FILE1, "dirty the file");
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// and attempt to rebase
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try {
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RebaseResult rebaseResult = git.rebase()
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RebaseResult rebaseResult = git.rebase()
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.setUpstream("refs/heads/master").call();
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fail("Checkout with conflict should have occured, not "
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+ rebaseResult.getStatus());
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} catch (JGitInternalException e) {
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checkFile(theFile, "dirty the file");
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}
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assertEquals(Status.CONFLICTS, rebaseResult.getStatus());
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assertEquals(1, rebaseResult.getConflicts().size());
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assertEquals(FILE1, rebaseResult.getConflicts().get(0));
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checkFile(theFile, "dirty the file");
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assertEquals(RepositoryState.SAFE, git.getRepository()
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.getRepositoryState());
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@ -45,6 +45,7 @@
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import java.text.MessageFormat;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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import org.eclipse.jgit.internal.JGitText;
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@ -173,6 +174,21 @@ public String toString() {
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return "Not-yet-supported";
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}
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@Override
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public boolean isSuccessful() {
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return false;
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}
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},
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/**
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* Status representing a checkout conflict, meaning that nothing could
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* be merged, as the pre-scan for the trees already failed for certain
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* files (i.e. local modifications prevent checkout of files).
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*/
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CHECKOUT_CONFLICT {
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public String toString() {
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return "Checkout Conflict";
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}
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@Override
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public boolean isSuccessful() {
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return false;
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@ -201,6 +217,8 @@ public boolean isSuccessful() {
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private Map<String, MergeFailureReason> failingPaths;
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private List<String> checkoutConflicts;
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/**
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* @param newHead
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* the object the head points at after the merge
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@ -294,6 +312,18 @@ public MergeResult(ObjectId newHead, ObjectId base,
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addConflict(result.getKey(), result.getValue());
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}
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/**
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* Creates a new result that represents a checkout conflict before the
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* operation even started for real.
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*
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* @param checkoutConflicts
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* the conflicting files
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*/
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public MergeResult(List<String> checkoutConflicts) {
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this.checkoutConflicts = checkoutConflicts;
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this.mergeStatus = MergeStatus.CHECKOUT_CONFLICT;
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}
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/**
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* @return the object the head points at after the merge
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*/
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@ -450,4 +480,14 @@ public Map<String, int[][]> getConflicts() {
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public Map<String, MergeFailureReason> getFailingPaths() {
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return failingPaths;
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}
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/**
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* Returns a list of paths that cause a checkout conflict. These paths
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* prevent the operation from even starting.
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*
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* @return the list of files that caused the checkout conflict.
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*/
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public List<String> getCheckoutConflicts() {
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return checkoutConflicts;
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}
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}
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@ -355,6 +355,8 @@ public RebaseResult call() throws GitAPIException, NoHeadException,
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return RebaseResult.OK_RESULT;
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}
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return RebaseResult.FAST_FORWARD_RESULT;
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} catch (CheckoutConflictException cce) {
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return new RebaseResult(cce.getConflictingPaths());
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} catch (IOException ioe) {
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throw new JGitInternalException(ioe.getMessage(), ioe);
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}
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@ -880,13 +882,18 @@ private String readFile(File directory, String fileName) throws IOException {
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return RawParseUtils.decode(content, 0, end);
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}
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private boolean checkoutCommit(RevCommit commit) throws IOException {
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private boolean checkoutCommit(RevCommit commit) throws IOException,
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CheckoutConflictException {
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try {
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RevCommit head = walk.parseCommit(repo.resolve(Constants.HEAD));
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DirCacheCheckout dco = new DirCacheCheckout(repo, head.getTree(),
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repo.lockDirCache(), commit.getTree());
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dco.setFailOnConflict(true);
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dco.checkout();
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try {
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dco.checkout();
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} catch (org.eclipse.jgit.errors.CheckoutConflictException cce) {
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throw new CheckoutConflictException(dco.getConflicts(), cce);
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}
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// update the HEAD
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RefUpdate refUpdate = repo.updateRef(Constants.HEAD, true);
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refUpdate.setExpectedOldObjectId(head);
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@ -42,6 +42,7 @@
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*/
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package org.eclipse.jgit.api;
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import java.util.List;
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import java.util.Map;
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import org.eclipse.jgit.merge.ResolveMerger;
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@ -92,6 +93,15 @@ public boolean isSuccessful() {
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return false;
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}
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},
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/**
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* Conflicts: checkout of target HEAD failed
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*/
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CONFLICTS {
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@Override
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public boolean isSuccessful() {
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return false;
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}
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},
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/**
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* Already up-to-date
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*/
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@ -148,6 +158,8 @@ public boolean isSuccessful() {
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private Map<String, MergeFailureReason> failingPaths;
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private List<String> conflicts;
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private RebaseResult(Status status) {
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this.status = status;
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currentCommit = null;
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@ -176,6 +188,18 @@ private RebaseResult(Status status) {
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this.failingPaths = failingPaths;
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}
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/**
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* Create <code>RebaseResult</code> with status {@link Status#CONFLICTS}
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*
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* @param conflicts
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* the list of conflicting paths
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*/
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RebaseResult(List<String> conflicts) {
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status = Status.CONFLICTS;
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currentCommit = null;
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this.conflicts = conflicts;
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}
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/**
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* @return the overall status
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*/
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@ -199,4 +223,11 @@ public RevCommit getCurrentCommit() {
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public Map<String, MergeFailureReason> getFailingPaths() {
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return failingPaths;
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}
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/**
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* @return the list of conflicts if status is {@link Status#CONFLICTS}
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*/
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public List<String> getConflicts() {
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return conflicts;
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}
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}
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