List of usage examples for org.eclipse.jgit.merge ResolveMerger getMergeResults
public Map<String, MergeResult<? extends Sequence>> getMergeResults()
From source file:com.google.gerrit.server.patch.AutoMerger.java
License:Apache License
/** * Perform an auto-merge of the parents of the given merge commit. * * @return auto-merge commit or {@code null} if an auto-merge commit * couldn't be created. Headers of the returned RevCommit are parsed. *//*from w w w .ja v a2 s.c o m*/ public RevCommit merge(Repository repo, RevWalk rw, final ObjectInserter ins, RevCommit merge, ThreeWayMergeStrategy mergeStrategy) throws IOException { rw.parseHeaders(merge); String hash = merge.name(); String refName = RefNames.REFS_CACHE_AUTOMERGE + hash.substring(0, 2) + "/" + hash.substring(2); Ref ref = repo.getRefDatabase().exactRef(refName); if (ref != null && ref.getObjectId() != null) { RevObject obj = rw.parseAny(ref.getObjectId()); if (obj instanceof RevCommit) { return (RevCommit) obj; } return commit(repo, rw, ins, refName, obj, merge); } ResolveMerger m = (ResolveMerger) mergeStrategy.newMerger(repo, true); DirCache dc = DirCache.newInCore(); m.setDirCache(dc); m.setObjectInserter(new ObjectInserter.Filter() { @Override protected ObjectInserter delegate() { return ins; } @Override public void flush() { } @Override public void close() { } }); boolean couldMerge; try { couldMerge = m.merge(merge.getParents()); } catch (IOException e) { // It is not safe to continue further down in this method as throwing // an exception most likely means that the merge tree was not created // and m.getMergeResults() is empty. This would mean that all paths are // unmerged and Gerrit UI would show all paths in the patch list. log.warn("Error attempting automerge " + refName, e); return null; } ObjectId treeId; if (couldMerge) { treeId = m.getResultTreeId(); } else { RevCommit ours = merge.getParent(0); RevCommit theirs = merge.getParent(1); rw.parseBody(ours); rw.parseBody(theirs); String oursMsg = ours.getShortMessage(); String theirsMsg = theirs.getShortMessage(); String oursName = String.format("HEAD (%s %s)", ours.abbreviate(6).name(), oursMsg.substring(0, Math.min(oursMsg.length(), 60))); String theirsName = String.format("BRANCH (%s %s)", theirs.abbreviate(6).name(), theirsMsg.substring(0, Math.min(theirsMsg.length(), 60))); MergeFormatter fmt = new MergeFormatter(); Map<String, MergeResult<? extends Sequence>> r = m.getMergeResults(); Map<String, ObjectId> resolved = new HashMap<>(); for (Map.Entry<String, MergeResult<? extends Sequence>> entry : r.entrySet()) { MergeResult<? extends Sequence> p = entry.getValue(); try (TemporaryBuffer buf = new TemporaryBuffer.LocalFile(null, 10 * 1024 * 1024)) { fmt.formatMerge(buf, p, "BASE", oursName, theirsName, UTF_8.name()); buf.close(); try (InputStream in = buf.openInputStream()) { resolved.put(entry.getKey(), ins.insert(Constants.OBJ_BLOB, buf.length(), in)); } } } DirCacheBuilder builder = dc.builder(); int cnt = dc.getEntryCount(); for (int i = 0; i < cnt;) { DirCacheEntry entry = dc.getEntry(i); if (entry.getStage() == 0) { builder.add(entry); i++; continue; } int next = dc.nextEntry(i); String path = entry.getPathString(); DirCacheEntry res = new DirCacheEntry(path); if (resolved.containsKey(path)) { // For a file with content merge conflict that we produced a result // above on, collapse the file down to a single stage 0 with just // the blob content, and a randomly selected mode (the lowest stage, // which should be the merge base, or ours). res.setFileMode(entry.getFileMode()); res.setObjectId(resolved.get(path)); } else if (next == i + 1) { // If there is exactly one stage present, shouldn't be a conflict... res.setFileMode(entry.getFileMode()); res.setObjectId(entry.getObjectId()); } else if (next == i + 2) { // Two stages suggests a delete/modify conflict. Pick the higher // stage as the automatic result. entry = dc.getEntry(i + 1); res.setFileMode(entry.getFileMode()); res.setObjectId(entry.getObjectId()); } else { // 3 stage conflict, no resolve above // Punt on the 3-stage conflict and show the base, for now. res.setFileMode(entry.getFileMode()); res.setObjectId(entry.getObjectId()); } builder.add(res); i = next; } builder.finish(); treeId = dc.writeTree(ins); } ins.flush(); return commit(repo, rw, ins, refName, treeId, merge); }
From source file:com.google.gerrit.server.patch.PatchListLoader.java
License:Apache License
public static RevTree automerge(Repository repo, RevWalk rw, RevCommit b, ThreeWayMergeStrategy mergeStrategy, boolean save) throws IOException { String hash = b.name();//from www .j a v a 2s . c o m String refName = RefNames.REFS_CACHE_AUTOMERGE + hash.substring(0, 2) + "/" + hash.substring(2); Ref ref = repo.getRefDatabase().exactRef(refName); if (ref != null && ref.getObjectId() != null) { return rw.parseTree(ref.getObjectId()); } ResolveMerger m = (ResolveMerger) mergeStrategy.newMerger(repo, true); try (ObjectInserter ins = repo.newObjectInserter()) { DirCache dc = DirCache.newInCore(); m.setDirCache(dc); m.setObjectInserter(new ObjectInserter.Filter() { @Override protected ObjectInserter delegate() { return ins; } @Override public void flush() { } @Override public void close() { } }); boolean couldMerge; try { couldMerge = m.merge(b.getParents()); } catch (IOException e) { // It is not safe to continue further down in this method as throwing // an exception most likely means that the merge tree was not created // and m.getMergeResults() is empty. This would mean that all paths are // unmerged and Gerrit UI would show all paths in the patch list. log.warn("Error attempting automerge " + refName, e); return null; } ObjectId treeId; if (couldMerge) { treeId = m.getResultTreeId(); } else { RevCommit ours = b.getParent(0); RevCommit theirs = b.getParent(1); rw.parseBody(ours); rw.parseBody(theirs); String oursMsg = ours.getShortMessage(); String theirsMsg = theirs.getShortMessage(); String oursName = String.format("HEAD (%s %s)", ours.abbreviate(6).name(), oursMsg.substring(0, Math.min(oursMsg.length(), 60))); String theirsName = String.format("BRANCH (%s %s)", theirs.abbreviate(6).name(), theirsMsg.substring(0, Math.min(theirsMsg.length(), 60))); MergeFormatter fmt = new MergeFormatter(); Map<String, MergeResult<? extends Sequence>> r = m.getMergeResults(); Map<String, ObjectId> resolved = new HashMap<>(); for (Map.Entry<String, MergeResult<? extends Sequence>> entry : r.entrySet()) { MergeResult<? extends Sequence> p = entry.getValue(); try (TemporaryBuffer buf = new TemporaryBuffer.LocalFile(null, 10 * 1024 * 1024)) { fmt.formatMerge(buf, p, "BASE", oursName, theirsName, "UTF-8"); buf.close(); try (InputStream in = buf.openInputStream()) { resolved.put(entry.getKey(), ins.insert(Constants.OBJ_BLOB, buf.length(), in)); } } } DirCacheBuilder builder = dc.builder(); int cnt = dc.getEntryCount(); for (int i = 0; i < cnt;) { DirCacheEntry entry = dc.getEntry(i); if (entry.getStage() == 0) { builder.add(entry); i++; continue; } int next = dc.nextEntry(i); String path = entry.getPathString(); DirCacheEntry res = new DirCacheEntry(path); if (resolved.containsKey(path)) { // For a file with content merge conflict that we produced a result // above on, collapse the file down to a single stage 0 with just // the blob content, and a randomly selected mode (the lowest stage, // which should be the merge base, or ours). res.setFileMode(entry.getFileMode()); res.setObjectId(resolved.get(path)); } else if (next == i + 1) { // If there is exactly one stage present, shouldn't be a conflict... res.setFileMode(entry.getFileMode()); res.setObjectId(entry.getObjectId()); } else if (next == i + 2) { // Two stages suggests a delete/modify conflict. Pick the higher // stage as the automatic result. entry = dc.getEntry(i + 1); res.setFileMode(entry.getFileMode()); res.setObjectId(entry.getObjectId()); } else { // 3 stage conflict, no resolve above // Punt on the 3-stage conflict and show the base, for now. res.setFileMode(entry.getFileMode()); res.setObjectId(entry.getObjectId()); } builder.add(res); i = next; } builder.finish(); treeId = dc.writeTree(ins); } ins.flush(); if (save) { RefUpdate update = repo.updateRef(refName); update.setNewObjectId(treeId); update.disableRefLog(); update.forceUpdate(); } return rw.lookupTree(treeId); } }
From source file:org.kie.commons.java.nio.fs.jgit.util.JGitUtil.java
License:Apache License
public static MergeResult mergeBranches(final Git git, final String source, final String target) throws Exception { final Repository repo = git.getRepository(); final MergeStrategy mergeStrategy = MergeStrategy.RESOLVE; final List<Ref> commits = new LinkedList<Ref>(); final boolean squash = false; RevWalk revWalk = null;//w ww.j av a 2 s .com DirCacheCheckout dco = null; try { Ref head = repo.getRef(Constants.HEAD); if (head == null) { throw new NoHeadException(JGitText.get().commitOnRepoWithoutHEADCurrentlyNotSupported); } final StringBuilder refLogMessage = new StringBuilder("merge "); // Check for FAST_FORWARD, ALREADY_UP_TO_DATE revWalk = new RevWalk(repo); // we know for now there is only one commit Ref ref = commits.get(0); refLogMessage.append(ref.getName()); // handle annotated tags ObjectId objectId = ref.getPeeledObjectId(); if (objectId == null) { objectId = ref.getObjectId(); } final RevCommit srcCommit = revWalk.lookupCommit(objectId); ObjectId headId = head.getObjectId(); if (headId == null) { revWalk.parseHeaders(srcCommit); dco = new DirCacheCheckout(repo, repo.lockDirCache(), srcCommit.getTree()); dco.setFailOnConflict(true); dco.checkout(); RefUpdate refUpdate = repo.updateRef(head.getTarget().getName()); refUpdate.setNewObjectId(objectId); refUpdate.setExpectedOldObjectId(null); refUpdate.setRefLogMessage("initial pull", false); if (refUpdate.update() != RefUpdate.Result.NEW) { throw new NoHeadException(JGitText.get().commitOnRepoWithoutHEADCurrentlyNotSupported); } return new MergeResult(srcCommit, srcCommit, new ObjectId[] { null, srcCommit }, MergeStatus.FAST_FORWARD, mergeStrategy, null, null); } final RevCommit headCommit = revWalk.lookupCommit(headId); if (revWalk.isMergedInto(srcCommit, headCommit)) { return new MergeResult(headCommit, srcCommit, new ObjectId[] { headCommit, srcCommit }, ALREADY_UP_TO_DATE, mergeStrategy, null, null); } else if (revWalk.isMergedInto(headCommit, srcCommit)) { // FAST_FORWARD detected: skip doing a real merge but only // update HEAD refLogMessage.append(": " + FAST_FORWARD); dco = new DirCacheCheckout(repo, headCommit.getTree(), repo.lockDirCache(), srcCommit.getTree()); dco.setFailOnConflict(true); dco.checkout(); String msg = null; ObjectId newHead, base = null; final MergeStatus mergeStatus; if (!squash) { updateHead(git, refLogMessage, srcCommit, headId); newHead = base = srcCommit; mergeStatus = FAST_FORWARD; } else { msg = JGitText.get().squashCommitNotUpdatingHEAD; newHead = base = headId; mergeStatus = FAST_FORWARD_SQUASHED; final List<RevCommit> squashedCommits = RevWalkUtils.find(revWalk, srcCommit, headCommit); final String squashMessage = new SquashMessageFormatter().format(squashedCommits, head); repo.writeSquashCommitMsg(squashMessage); } return new MergeResult(newHead, base, new ObjectId[] { headCommit, srcCommit }, mergeStatus, mergeStrategy, null, msg); } else { String mergeMessage = ""; if (!squash) { mergeMessage = new MergeMessageFormatter().format(commits, head); repo.writeMergeCommitMsg(mergeMessage); repo.writeMergeHeads(Arrays.asList(ref.getObjectId())); } else { final List<RevCommit> squashedCommits = RevWalkUtils.find(revWalk, srcCommit, headCommit); final String squashMessage = new SquashMessageFormatter().format(squashedCommits, head); repo.writeSquashCommitMsg(squashMessage); } boolean noProblems; final Merger merger = mergeStrategy.newMerger(repo); final Map<String, org.eclipse.jgit.merge.MergeResult<?>> lowLevelResults; final Map<String, ResolveMerger.MergeFailureReason> failingPaths; final List<String> unmergedPaths; if (merger instanceof ResolveMerger) { ResolveMerger resolveMerger = (ResolveMerger) merger; resolveMerger.setCommitNames(new String[] { "BASE", "HEAD", ref.getName() }); resolveMerger.setWorkingTreeIterator(new FileTreeIterator(repo)); noProblems = merger.merge(headCommit, srcCommit); lowLevelResults = resolveMerger.getMergeResults(); failingPaths = resolveMerger.getFailingPaths(); unmergedPaths = resolveMerger.getUnmergedPaths(); } else { noProblems = merger.merge(headCommit, srcCommit); lowLevelResults = emptyMap(); failingPaths = emptyMap(); unmergedPaths = emptyList(); } refLogMessage.append(": Merge made by "); refLogMessage.append(mergeStrategy.getName()); refLogMessage.append('.'); if (noProblems) { dco = new DirCacheCheckout(repo, headCommit.getTree(), repo.lockDirCache(), merger.getResultTreeId()); dco.setFailOnConflict(true); dco.checkout(); String msg = null; RevCommit newHead = null; MergeStatus mergeStatus = null; if (!squash) { newHead = new Git(repo).commit().setReflogComment(refLogMessage.toString()).call(); mergeStatus = MERGED; } else { msg = JGitText.get().squashCommitNotUpdatingHEAD; newHead = headCommit; mergeStatus = MERGED_SQUASHED; } return new MergeResult(newHead.getId(), null, new ObjectId[] { headCommit.getId(), srcCommit.getId() }, mergeStatus, mergeStrategy, null, msg); } else { if (failingPaths != null && !failingPaths.isEmpty()) { repo.writeMergeCommitMsg(null); repo.writeMergeHeads(null); return new MergeResult(null, merger.getBaseCommit(0, 1), new ObjectId[] { headCommit.getId(), srcCommit.getId() }, FAILED, mergeStrategy, lowLevelResults, failingPaths, null); } else { final String mergeMessageWithConflicts = new MergeMessageFormatter() .formatWithConflicts(mergeMessage, unmergedPaths); repo.writeMergeCommitMsg(mergeMessageWithConflicts); return new MergeResult(null, merger.getBaseCommit(0, 1), new ObjectId[] { headCommit.getId(), srcCommit.getId() }, CONFLICTING, mergeStrategy, lowLevelResults, null); } } } } catch (org.eclipse.jgit.errors.CheckoutConflictException e) { final List<String> conflicts = (dco == null) ? Collections.<String>emptyList() : dco.getConflicts(); throw new CheckoutConflictException(conflicts, e); } catch (java.io.IOException e) { throw new JGitInternalException( MessageFormat.format(JGitText.get().exceptionCaughtDuringExecutionOfMergeCommand, e), e); } finally { if (revWalk != null) { revWalk.release(); } } }