Examples with MergeIdenticalTreeException com.google.gerrit.server.submit.MergeIdenticalTreeException used on opensource projects

Example 1 with MergeIdenticalTreeException

use of com.google.gerrit.server.submit.MergeIdenticalTreeException in project gerrit by GerritCodeReview.

the class MergeUtil method createMergeCommit.

public static CodeReviewCommit createMergeCommit(ObjectInserter inserter, Config repoConfig, RevCommit mergeTip, RevCommit originalCommit, String mergeStrategy, boolean allowConflicts, PersonIdent authorIdent, PersonIdent committerIdent, String commitMsg, CodeReviewRevWalk rw) throws IOException, MergeIdenticalTreeException, MergeConflictException, InvalidMergeStrategyException {
    if (!MergeStrategy.THEIRS.getName().equals(mergeStrategy) && rw.isMergedInto(originalCommit, mergeTip)) {
        throw new ChangeAlreadyMergedException("'" + originalCommit.getName() + "' has already been merged");
    }
    Merger m = newMerger(inserter, repoConfig, mergeStrategy);
    DirCache dc = DirCache.newInCore();
    if (allowConflicts && m instanceof ResolveMerger) {
        // The DirCache must be set on ResolveMerger before calling
        // ResolveMerger#merge(AnyObjectId...) otherwise the entries in DirCache don't get populated.
        ((ResolveMerger) m).setDirCache(dc);
    }
    ObjectId tree;
    ImmutableSet<String> filesWithGitConflicts;
    if (m.merge(false, mergeTip, originalCommit)) {
        filesWithGitConflicts = null;
        tree = m.getResultTreeId();
    } else {
        List<String> conflicts = ImmutableList.of();
        if (m instanceof ResolveMerger) {
            conflicts = ((ResolveMerger) m).getUnmergedPaths();
        }
        if (!allowConflicts) {
            throw new MergeConflictException(createConflictMessage(conflicts));
        }
        // For merging with conflict markers we need a ResolveMerger, double-check that we have one.
        if (!(m instanceof ResolveMerger)) {
            throw new MergeWithConflictsNotSupportedException(MergeStrategy.get(mergeStrategy));
        }
        Map<String, MergeResult<? extends Sequence>> mergeResults = ((ResolveMerger) m).getMergeResults();
        filesWithGitConflicts = mergeResults.entrySet().stream().filter(e -> e.getValue().containsConflicts()).map(Map.Entry::getKey).collect(toImmutableSet());
        tree = mergeWithConflicts(rw, inserter, dc, "TARGET BRANCH", mergeTip, "SOURCE BRANCH", originalCommit, mergeResults);
    }
    CommitBuilder mergeCommit = new CommitBuilder();
    mergeCommit.setTreeId(tree);
    mergeCommit.setParentIds(mergeTip, originalCommit);
    mergeCommit.setAuthor(authorIdent);
    mergeCommit.setCommitter(committerIdent);
    mergeCommit.setMessage(commitMsg);
    CodeReviewCommit commit = rw.parseCommit(inserter.insert(mergeCommit));
    commit.setFilesWithGitConflicts(filesWithGitConflicts);
    return commit;
}

Example 2 with MergeIdenticalTreeException

use of com.google.gerrit.server.submit.MergeIdenticalTreeException in project gerrit by GerritCodeReview.

the class MergeUtil method createCherryPickFromCommit.

public CodeReviewCommit createCherryPickFromCommit(ObjectInserter inserter, Config repoConfig, RevCommit mergeTip, RevCommit originalCommit, PersonIdent cherryPickCommitterIdent, String commitMsg, CodeReviewRevWalk rw, int parentIndex, boolean ignoreIdenticalTree, boolean allowConflicts) throws IOException, MergeIdenticalTreeException, MergeConflictException, MethodNotAllowedException, InvalidMergeStrategyException {
    ThreeWayMerger m = newThreeWayMerger(inserter, repoConfig);
    m.setBase(originalCommit.getParent(parentIndex));
    DirCache dc = DirCache.newInCore();
    if (allowConflicts && m instanceof ResolveMerger) {
        // The DirCache must be set on ResolveMerger before calling
        // ResolveMerger#merge(AnyObjectId...) otherwise the entries in DirCache don't get populated.
        ((ResolveMerger) m).setDirCache(dc);
    }
    ObjectId tree;
    ImmutableSet<String> filesWithGitConflicts;
    if (m.merge(mergeTip, originalCommit)) {
        filesWithGitConflicts = null;
        tree = m.getResultTreeId();
        if (tree.equals(mergeTip.getTree()) && !ignoreIdenticalTree) {
            throw new MergeIdenticalTreeException("identical tree");
        }
    } else {
        if (!allowConflicts) {
            throw new MergeConflictException(String.format("merge conflict while merging commits %s and %s", mergeTip.toObjectId(), originalCommit.toObjectId()));
        }
        if (!useContentMerge) {
            // conflict markers.
            throw new MethodNotAllowedException("Cherry-pick with allow conflicts requires that content merge is enabled.");
        }
        // For merging with conflict markers we need a ResolveMerger, double-check that we have one.
        checkState(m instanceof ResolveMerger, "allow conflicts is not supported");
        Map<String, MergeResult<? extends Sequence>> mergeResults = ((ResolveMerger) m).getMergeResults();
        filesWithGitConflicts = mergeResults.entrySet().stream().filter(e -> e.getValue().containsConflicts()).map(Map.Entry::getKey).collect(toImmutableSet());
        tree = mergeWithConflicts(rw, inserter, dc, "HEAD", mergeTip, "CHANGE", originalCommit, mergeResults);
    }
    CommitBuilder cherryPickCommit = new CommitBuilder();
    cherryPickCommit.setTreeId(tree);
    cherryPickCommit.setParentId(mergeTip);
    cherryPickCommit.setAuthor(originalCommit.getAuthorIdent());
    cherryPickCommit.setCommitter(cherryPickCommitterIdent);
    cherryPickCommit.setMessage(commitMsg);
    matchAuthorToCommitterDate(project, cherryPickCommit);
    CodeReviewCommit commit = rw.parseCommit(inserter.insert(cherryPickCommit));
    commit.setFilesWithGitConflicts(filesWithGitConflicts);
    return commit;
}

Example 3 with MergeIdenticalTreeException

use of com.google.gerrit.server.submit.MergeIdenticalTreeException in project gerrit by GerritCodeReview.

the class CherryPickChange method cherryPick.

/**
 * This function can be called directly to cherry-pick a change (or commit if sourceChange is
 * null) with a few other parameters that are especially useful for cherry-picking a commit that
 * is the revert-of another change.
 *
 * @param sourceChange Change to cherry pick. Can be null, and then the function will only cherry
 *     pick a commit.
 * @param project Project name
 * @param sourceCommit Id of the commit to be cherry picked.
 * @param input Input object for different configurations of cherry pick.
 * @param dest Destination branch for the cherry pick.
 * @param timestamp the current timestamp.
 * @param revertedChange The id of the change that is reverted. This is used for the "revertOf"
 *     field to mark the created cherry pick change as "revertOf" the original change that was
 *     reverted.
 * @param changeIdForNewChange The Change-Id that the new change of the cherry pick will have.
 * @param idForNewChange The ID that the new change of the cherry pick will have. If provided and
 *     the cherry-pick doesn't result in creating a new change, then
 *     InvalidChangeOperationException is thrown.
 * @return Result object that describes the cherry pick.
 * @throws IOException Unable to open repository or read from the database.
 * @throws InvalidChangeOperationException Parent or branch don't exist, or two changes with same
 *     key exist in the branch. Also thrown when idForNewChange is not null but cherry-pick only
 *     creates a new patchset rather than a new change.
 * @throws UpdateException Problem updating the database using batchUpdateFactory.
 * @throws RestApiException Error such as invalid SHA1
 * @throws ConfigInvalidException Can't find account to notify.
 * @throws NoSuchProjectException Can't find project state.
 */
public Result cherryPick(@Nullable Change sourceChange, Project.NameKey project, ObjectId sourceCommit, CherryPickInput input, BranchNameKey dest, Instant timestamp, @Nullable Change.Id revertedChange, @Nullable ObjectId changeIdForNewChange, @Nullable Change.Id idForNewChange, @Nullable Boolean workInProgress) throws IOException, InvalidChangeOperationException, UpdateException, RestApiException, ConfigInvalidException, NoSuchProjectException {
    IdentifiedUser identifiedUser = user.get();
    try (Repository git = gitManager.openRepository(project);
        // before patch sets are updated.
        ObjectInserter oi = git.newObjectInserter();
        ObjectReader reader = oi.newReader();
        CodeReviewRevWalk revWalk = CodeReviewCommit.newRevWalk(reader)) {
        Ref destRef = git.getRefDatabase().exactRef(dest.branch());
        if (destRef == null) {
            throw new InvalidChangeOperationException(String.format("Branch %s does not exist.", dest.branch()));
        }
        RevCommit baseCommit = getBaseCommit(destRef, project.get(), revWalk, input.base);
        CodeReviewCommit commitToCherryPick = revWalk.parseCommit(sourceCommit);
        if (input.parent <= 0 || input.parent > commitToCherryPick.getParentCount()) {
            throw new InvalidChangeOperationException(String.format("Cherry Pick: Parent %s does not exist. Please specify a parent in" + " range [1, %s].", input.parent, commitToCherryPick.getParentCount()));
        }
        // If the commit message is not set, the commit message of the source commit will be used.
        String commitMessage = Strings.nullToEmpty(input.message);
        commitMessage = commitMessage.isEmpty() ? commitToCherryPick.getFullMessage() : commitMessage;
        String destChangeId = getDestinationChangeId(commitMessage, changeIdForNewChange);
        ChangeData destChange = null;
        if (destChangeId != null) {
            // If "idForNewChange" is not null we must fail, since we are not expecting an already
            // existing change.
            destChange = getDestChangeWithVerification(destChangeId, dest, idForNewChange != null);
        }
        if (changeIdForNewChange != null) {
            // If Change-Id was explicitly provided for the new change, override the value in commit
            // message.
            commitMessage = ChangeIdUtil.insertId(commitMessage, changeIdForNewChange, true);
        } else if (destChangeId == null) {
            // If commit message did not specify Change-Id, generate a new one and insert to the
            // message.
            commitMessage = ChangeIdUtil.insertId(commitMessage, CommitMessageUtil.generateChangeId(), true);
        }
        commitMessage = CommitMessageUtil.checkAndSanitizeCommitMessage(commitMessage);
        CodeReviewCommit cherryPickCommit;
        ProjectState projectState = projectCache.get(dest.project()).orElseThrow(noSuchProject(dest.project()));
        PersonIdent committerIdent = identifiedUser.newCommitterIdent(timestamp, serverTimeZone);
        try {
            MergeUtil mergeUtil;
            if (input.allowConflicts) {
                // allowConflicts requires to use content merge
                mergeUtil = mergeUtilFactory.create(projectState, true);
            } else {
                // use content merge only if it's configured on the project
                mergeUtil = mergeUtilFactory.create(projectState);
            }
            cherryPickCommit = mergeUtil.createCherryPickFromCommit(oi, git.getConfig(), baseCommit, commitToCherryPick, committerIdent, commitMessage, revWalk, input.parent - 1, input.allowEmpty, input.allowConflicts);
            oi.flush();
        } catch (MergeIdenticalTreeException | MergeConflictException e) {
            throw new IntegrationConflictException("Cherry pick failed: " + e.getMessage(), e);
        }
        try (BatchUpdate bu = batchUpdateFactory.create(project, identifiedUser, timestamp)) {
            bu.setRepository(git, revWalk, oi);
            bu.setNotify(resolveNotify(input));
            Change.Id changeId;
            String newTopic = null;
            if (input.topic != null) {
                newTopic = Strings.emptyToNull(input.topic.trim());
            }
            if (newTopic == null && sourceChange != null && !Strings.isNullOrEmpty(sourceChange.getTopic())) {
                newTopic = sourceChange.getTopic() + "-" + dest.shortName();
            }
            if (destChange != null) {
                // The change key exists on the destination branch. The cherry pick
                // will be added as a new patch set.
                changeId = insertPatchSet(bu, git, destChange.notes(), cherryPickCommit, sourceChange, newTopic, input, workInProgress);
            } else {
                // Change key not found on destination branch. We can create a new
                // change.
                changeId = createNewChange(bu, cherryPickCommit, dest.branch(), newTopic, project, sourceChange, sourceCommit, input, revertedChange, idForNewChange, workInProgress);
            }
            bu.execute();
            return Result.create(changeId, cherryPickCommit.getFilesWithGitConflicts());
        }
    }
}