Examples with DirCache org.eclipse.jgit.dircache.DirCache used on opensource projects

Example 16 with DirCache

use of org.eclipse.jgit.dircache.DirCache in project gerrit by GerritCodeReview.

the class SubmoduleOp method composeGitlinksCommit.

/** Amend an existing commit with gitlink updates */
public CodeReviewCommit composeGitlinksCommit(final Branch.NameKey subscriber, CodeReviewCommit currentCommit) throws IOException, SubmoduleException {
    OpenRepo or;
    try {
        or = orm.getRepo(subscriber.getParentKey());
    } catch (NoSuchProjectException | IOException e) {
        throw new SubmoduleException("Cannot access superproject", e);
    }
    StringBuilder msgbuf = new StringBuilder("");
    DirCache dc = readTree(or.rw, currentCommit);
    DirCacheEditor ed = dc.editor();
    for (SubmoduleSubscription s : targets.get(subscriber)) {
        updateSubmodule(dc, ed, msgbuf, s);
    }
    ed.finish();
    ObjectId newTreeId = dc.writeTree(or.ins);
    // Gitlinks are already updated, just return the commit
    if (newTreeId.equals(currentCommit.getTree())) {
        return currentCommit;
    }
    or.rw.parseBody(currentCommit);
    CommitBuilder commit = new CommitBuilder();
    commit.setTreeId(newTreeId);
    commit.setParentIds(currentCommit.getParents());
    if (verboseSuperProject != VerboseSuperprojectUpdate.FALSE) {
        // TODO(czhen): handle cherrypick footer
        commit.setMessage(currentCommit.getFullMessage() + "\n\n* submodules:\n" + msgbuf.toString());
    } else {
        commit.setMessage(currentCommit.getFullMessage());
    }
    commit.setAuthor(currentCommit.getAuthorIdent());
    commit.setCommitter(myIdent);
    ObjectId id = or.ins.insert(commit);
    CodeReviewCommit newCommit = or.rw.parseCommit(id);
    newCommit.copyFrom(currentCommit);
    return newCommit;
}

Example 17 with DirCache

use of org.eclipse.jgit.dircache.DirCache in project gerrit by GerritCodeReview.

the class VersionedMetaData method readTree.

protected DirCache readTree(RevTree tree) throws IOException, MissingObjectException, IncorrectObjectTypeException {
    DirCache dc = DirCache.newInCore();
    if (tree != null) {
        DirCacheBuilder b = dc.builder();
        b.addTree(new byte[0], DirCacheEntry.STAGE_0, reader, tree);
        b.finish();
    }
    return dc;
}

Example 18 with DirCache

use of org.eclipse.jgit.dircache.DirCache in project gerrit by GerritCodeReview.

the class VersionedMetaData method openUpdate.

/**
   * Open a batch of updates to the same metadata ref.
   *
   * <p>This allows making multiple commits to a single metadata ref, at the end of which is a
   * single ref update. For batching together updates to multiple refs (each consisting of one or
   * more commits against their respective refs), create the {@link MetaDataUpdate} with a {@link
   * BatchRefUpdate}.
   *
   * <p>A ref update produced by this {@link BatchMetaDataUpdate} is only committed if there is no
   * associated {@link BatchRefUpdate}. As a result, the configured ref updated event is not fired
   * if there is an associated batch.
   *
   * @param update helper info about the update.
   * @throws IOException if the update failed.
   */
public BatchMetaDataUpdate openUpdate(final MetaDataUpdate update) throws IOException {
    final Repository db = update.getRepository();
    reader = db.newObjectReader();
    inserter = db.newObjectInserter();
    final RevWalk rw = new RevWalk(reader);
    final RevTree tree = revision != null ? rw.parseTree(revision) : null;
    newTree = readTree(tree);
    return new BatchMetaDataUpdate() {

        AnyObjectId src = revision;

        AnyObjectId srcTree = tree;

        @Override
        public void write(CommitBuilder commit) throws IOException {
            write(VersionedMetaData.this, commit);
        }

        private boolean doSave(VersionedMetaData config, CommitBuilder commit) throws IOException {
            DirCache nt = config.newTree;
            ObjectReader r = config.reader;
            ObjectInserter i = config.inserter;
            try {
                config.newTree = newTree;
                config.reader = reader;
                config.inserter = inserter;
                return config.onSave(commit);
            } catch (ConfigInvalidException e) {
                throw new IOException("Cannot update " + getRefName() + " in " + db.getDirectory() + ": " + e.getMessage(), e);
            } finally {
                config.newTree = nt;
                config.reader = r;
                config.inserter = i;
            }
        }

        @Override
        public void write(VersionedMetaData config, CommitBuilder commit) throws IOException {
            if (!doSave(config, commit)) {
                return;
            }
            ObjectId res = newTree.writeTree(inserter);
            if (res.equals(srcTree) && !update.allowEmpty() && (commit.getTreeId() == null)) {
                // If there are no changes to the content, don't create the commit.
                return;
            }
            // the tree for the updated DirCache.
            if (commit.getTreeId() == null) {
                commit.setTreeId(res);
            } else {
                // In this case, the caller populated the tree without using DirCache.
                res = commit.getTreeId();
            }
            if (src != null) {
                commit.addParentId(src);
            }
            if (update.insertChangeId()) {
                ObjectId id = ChangeIdUtil.computeChangeId(res, getRevision(), commit.getAuthor(), commit.getCommitter(), commit.getMessage());
                commit.setMessage(ChangeIdUtil.insertId(commit.getMessage(), id));
            }
            src = inserter.insert(commit);
            srcTree = res;
        }

        @Override
        public RevCommit createRef(String refName) throws IOException {
            if (Objects.equals(src, revision)) {
                return revision;
            }
            return updateRef(ObjectId.zeroId(), src, refName);
        }

        @Override
        public void removeRef(String refName) throws IOException {
            RefUpdate ru = db.updateRef(refName);
            ru.setForceUpdate(true);
            if (revision != null) {
                ru.setExpectedOldObjectId(revision);
            }
            RefUpdate.Result result = ru.delete();
            switch(result) {
                case FORCED:
                    update.fireGitRefUpdatedEvent(ru);
                    return;
                case LOCK_FAILURE:
                    throw new LockFailureException("Cannot delete " + ru.getName() + " in " + db.getDirectory() + ": " + ru.getResult());
                case FAST_FORWARD:
                case IO_FAILURE:
                case NEW:
                case NOT_ATTEMPTED:
                case NO_CHANGE:
                case REJECTED:
                case REJECTED_CURRENT_BRANCH:
                case RENAMED:
                default:
                    throw new IOException("Cannot delete " + ru.getName() + " in " + db.getDirectory() + ": " + ru.getResult());
            }
        }

        @Override
        public RevCommit commit() throws IOException {
            return commitAt(revision);
        }

        @Override
        public RevCommit commitAt(ObjectId expected) throws IOException {
            if (Objects.equals(src, expected)) {
                return revision;
            }
            return updateRef(MoreObjects.firstNonNull(expected, ObjectId.zeroId()), src, getRefName());
        }

        @Override
        public void close() {
            newTree = null;
            rw.close();
            if (inserter != null) {
                inserter.close();
                inserter = null;
            }
            if (reader != null) {
                reader.close();
                reader = null;
            }
        }

        private RevCommit updateRef(AnyObjectId oldId, AnyObjectId newId, String refName) throws IOException {
            BatchRefUpdate bru = update.getBatch();
            if (bru != null) {
                bru.addCommand(new ReceiveCommand(oldId.toObjectId(), newId.toObjectId(), refName));
                inserter.flush();
                revision = rw.parseCommit(newId);
                return revision;
            }
            RefUpdate ru = db.updateRef(refName);
            ru.setExpectedOldObjectId(oldId);
            ru.setNewObjectId(src);
            ru.setRefLogIdent(update.getCommitBuilder().getAuthor());
            String message = update.getCommitBuilder().getMessage();
            if (message == null) {
                message = "meta data update";
            }
            try (BufferedReader reader = new BufferedReader(new StringReader(message))) {
                // read the subject line and use it as reflog message
                ru.setRefLogMessage("commit: " + reader.readLine(), true);
            }
            inserter.flush();
            RefUpdate.Result result = ru.update();
            switch(result) {
                case NEW:
                case FAST_FORWARD:
                    revision = rw.parseCommit(ru.getNewObjectId());
                    update.fireGitRefUpdatedEvent(ru);
                    return revision;
                case LOCK_FAILURE:
                    throw new LockFailureException("Cannot update " + ru.getName() + " in " + db.getDirectory() + ": " + ru.getResult());
                case FORCED:
                case IO_FAILURE:
                case NOT_ATTEMPTED:
                case NO_CHANGE:
                case REJECTED:
                case REJECTED_CURRENT_BRANCH:
                case RENAMED:
                default:
                    throw new IOException("Cannot update " + ru.getName() + " in " + db.getDirectory() + ": " + ru.getResult());
            }
        }
    };
}

Example 19 with DirCache

use of org.eclipse.jgit.dircache.DirCache in project gerrit by GerritCodeReview.

the class TreeCreator method createNewTree.

private DirCache createNewTree(Repository repository) throws IOException {
    DirCache newTree = readBaseTree(repository);
    List<DirCacheEditor.PathEdit> pathEdits = getPathEdits(repository);
    applyPathEdits(newTree, pathEdits);
    return newTree;
}