private VersionImpl updateTree(final Tree root, final String key, final byte[] data)
throws IOException {
ObjectId objectId = writeBytes(data);
FileTreeEntry fileTreeEntry = root.addFile(key + "/" + objectId.name());
fileTreeEntry.setId(objectId);
Commit commit = commitTree(root);
updateHead(commit);
VersionImpl version = new VersionImpl(commit, key, fileTreeEntry);
return version;
}
private void verifyPrerequisites() throws TransportException {
if (prereqs.isEmpty()) return;
final RevWalk rw = new RevWalk(local);
final RevFlag PREREQ = rw.newFlag("PREREQ");
final RevFlag SEEN = rw.newFlag("SEEN");
final List<ObjectId> missing = new ArrayList<ObjectId>();
final List<RevObject> commits = new ArrayList<RevObject>();
for (final ObjectId p : prereqs) {
try {
final RevCommit c = rw.parseCommit(p);
if (!c.has(PREREQ)) {
c.add(PREREQ);
commits.add(c);
}
} catch (MissingObjectException notFound) {
missing.add(p);
} catch (IOException err) {
throw new TransportException(uri, "Cannot read commit " + p.name(), err);
}
}
if (!missing.isEmpty()) throw new MissingBundlePrerequisiteException(uri, missing);
for (final Ref r : local.getAllRefs().values()) {
try {
rw.markStart(rw.parseCommit(r.getObjectId()));
} catch (IOException readError) {
// If we cannot read the value of the ref skip it.
}
}
int remaining = commits.size();
try {
RevCommit c;
while ((c = rw.next()) != null) {
if (c.has(PREREQ)) {
c.add(SEEN);
if (--remaining == 0) break;
}
}
} catch (IOException err) {
throw new TransportException(uri, "Cannot read object", err);
}
if (remaining > 0) {
for (final RevObject o : commits) {
if (!o.has(SEEN)) missing.add(o);
}
throw new MissingBundlePrerequisiteException(uri, missing);
}
}
private Map<String, Ref> readAdvertisedImpl(final BufferedReader br)
throws IOException, PackProtocolException {
final TreeMap<String, Ref> avail = new TreeMap<String, Ref>();
for (; ; ) {
String line = br.readLine();
if (line == null) break;
final int tab = line.indexOf('\t');
if (tab < 0) throw invalidAdvertisement(line);
String name;
final ObjectId id;
name = line.substring(tab + 1);
id = ObjectId.fromString(line.substring(0, tab));
if (name.endsWith("^{}")) {
name = name.substring(0, name.length() - 3);
final Ref prior = avail.get(name);
if (prior == null) throw outOfOrderAdvertisement(name);
if (prior.getPeeledObjectId() != null) throw duplicateAdvertisement(name + "^{}");
avail.put(name, new Ref(Ref.Storage.NETWORK, name, prior.getObjectId(), id, true));
} else {
final Ref prior = avail.put(name, new Ref(Ref.Storage.NETWORK, name, id));
if (prior != null) throw duplicateAdvertisement(name);
}
}
return avail;
}
private Map<String, Ref> computeNewRefs() throws IOException {
final RevWalk rw = new RevWalk(db);
final Map<String, Ref> refs = new HashMap<String, Ref>();
final BufferedReader br =
new BufferedReader(new InputStreamReader(new FileInputStream(refList), Constants.CHARSET));
try {
String line;
while ((line = br.readLine()) != null) {
final String[] parts = line.split("[ \t]{1,}");
final ObjectId origId = ObjectId.fromString(parts[0]);
final String type = parts[1];
final String name = parts[2];
ObjectId id = rewrites.get(origId);
if (id == null) id = origId;
try {
rw.parseAny(id);
} catch (MissingObjectException mue) {
if (!Constants.TYPE_COMMIT.equals(type)) {
System.err.println("skipping " + type + " " + name);
continue;
}
throw new MissingObjectException(id, type);
}
refs.put(name, new Ref(Ref.Storage.PACKED, name, id));
}
} finally {
br.close();
}
return refs;
}
private void readBundleV2() throws IOException {
final byte[] hdrbuf = new byte[1024];
final LinkedHashMap<String, Ref> avail = new LinkedHashMap<String, Ref>();
for (; ; ) {
String line = readLine(hdrbuf);
if (line.length() == 0) break;
if (line.charAt(0) == '-') {
prereqs.add(ObjectId.fromString(line.substring(1, 41)));
continue;
}
final String name = line.substring(41, line.length());
final ObjectId id = ObjectId.fromString(line.substring(0, 40));
final Ref prior = avail.put(name, new Ref(Ref.Storage.NETWORK, name, id));
if (prior != null) throw duplicateAdvertisement(name);
}
available(avail);
}
private void detachHead() throws IOException {
final String head = db.getFullBranch();
final ObjectId id = db.resolve(Constants.HEAD);
if (!ObjectId.isId(head) && id != null) {
final LockFile lf;
lf = new LockFile(new File(db.getDirectory(), Constants.HEAD));
if (!lf.lock()) throw new IOException("Cannot lock HEAD");
lf.write(id);
if (!lf.commit()) throw new IOException("Cannot deatch HEAD");
}
}
public void push(final ProgressMonitor monitor, final Map<String, RemoteRefUpdate> refUpdates)
throws TransportException {
markStartedOperation();
packNames = null;
newRefs = new TreeMap<String, Ref>(getRefsMap());
packedRefUpdates = new ArrayList<RemoteRefUpdate>(refUpdates.size());
// Filter the commands and issue all deletes first. This way we
// can correctly handle a directory being cleared out and a new
// ref using the directory name being created.
//
final List<RemoteRefUpdate> updates = new ArrayList<RemoteRefUpdate>();
for (final RemoteRefUpdate u : refUpdates.values()) {
final String n = u.getRemoteName();
if (!n.startsWith("refs/") || !Repository.isValidRefName(n)) {
u.setStatus(Status.REJECTED_OTHER_REASON);
u.setMessage("funny refname");
continue;
}
if (AnyObjectId.equals(ObjectId.zeroId(), u.getNewObjectId())) deleteCommand(u);
else updates.add(u);
}
// If we have any updates we need to upload the objects first, to
// prevent creating refs pointing at non-existent data. Then we
// can update the refs, and the info-refs file for dumb transports.
//
if (!updates.isEmpty()) sendpack(updates, monitor);
for (final RemoteRefUpdate u : updates) updateCommand(u);
// Is this a new repository? If so we should create additional
// metadata files so it is properly initialized during the push.
//
if (!updates.isEmpty() && isNewRepository()) createNewRepository(updates);
RefWriter refWriter =
new RefWriter(newRefs.values()) {
@Override
protected void writeFile(String file, byte[] content) throws IOException {
dest.writeFile(ROOT_DIR + file, content);
}
};
if (!packedRefUpdates.isEmpty()) {
try {
refWriter.writePackedRefs();
for (final RemoteRefUpdate u : packedRefUpdates) u.setStatus(Status.OK);
} catch (IOException err) {
for (final RemoteRefUpdate u : packedRefUpdates) {
u.setStatus(Status.REJECTED_OTHER_REASON);
u.setMessage(err.getMessage());
}
throw new TransportException(uri, "failed updating refs", err);
}
}
try {
refWriter.writeInfoRefs();
} catch (IOException err) {
throw new TransportException(uri, "failed updating refs", err);
}
}
private void recreateCommitGraph() throws IOException {
final RevWalk rw = new RevWalk(db);
final Map<ObjectId, ToRewrite> toRewrite = new HashMap<ObjectId, ToRewrite>();
List<ToRewrite> queue = new ArrayList<ToRewrite>();
final BufferedReader br =
new BufferedReader(new InputStreamReader(new FileInputStream(graph), Constants.CHARSET));
try {
String line;
while ((line = br.readLine()) != null) {
final String[] parts = line.split("[ \t]{1,}");
final ObjectId oldId = ObjectId.fromString(parts[0]);
try {
rw.parseCommit(oldId);
// We have it already. Don't rewrite it.
continue;
} catch (MissingObjectException mue) {
// Fall through and rewrite it.
}
final long time = Long.parseLong(parts[1]) * 1000L;
final ObjectId[] parents = new ObjectId[parts.length - 2];
for (int i = 0; i < parents.length; i++) {
parents[i] = ObjectId.fromString(parts[2 + i]);
}
final ToRewrite t = new ToRewrite(oldId, time, parents);
toRewrite.put(oldId, t);
queue.add(t);
}
} finally {
br.close();
}
pm.beginTask("Rewriting commits", queue.size());
final ObjectWriter ow = new ObjectWriter(db);
final ObjectId emptyTree = ow.writeTree(new Tree(db));
final PersonIdent me =
new PersonIdent("jgit rebuild-commitgraph", "rebuild-commitgraph@localhost");
while (!queue.isEmpty()) {
final ListIterator<ToRewrite> itr = queue.listIterator(queue.size());
queue = new ArrayList<ToRewrite>();
REWRITE:
while (itr.hasPrevious()) {
final ToRewrite t = itr.previous();
final ObjectId[] newParents = new ObjectId[t.oldParents.length];
for (int k = 0; k < t.oldParents.length; k++) {
final ToRewrite p = toRewrite.get(t.oldParents[k]);
if (p != null) {
if (p.newId == null) {
// Must defer until after the parent is rewritten.
queue.add(t);
continue REWRITE;
} else {
newParents[k] = p.newId;
}
} else {
// We have the old parent object. Use it.
//
newParents[k] = t.oldParents[k];
}
}
final Commit newc = new Commit(db);
newc.setTreeId(emptyTree);
newc.setAuthor(new PersonIdent(me, new Date(t.commitTime)));
newc.setCommitter(newc.getAuthor());
newc.setParentIds(newParents);
newc.setMessage("ORIGINAL " + t.oldId.name() + "\n");
t.newId = ow.writeCommit(newc);
rewrites.put(t.oldId, t.newId);
pm.update(1);
}
}
pm.endTask();
}
/**
* Get the object id of the current entry.
*
* @return an object id for the current entry.
*/
public ObjectId getEntryObjectId() {
return ObjectId.fromRaw(idBuffer(), idOffset());
}
/**
* Check if the current entry of both iterators has the same id.
*
* <p>This method is faster than {@link #getEntryObjectId()} as it does not require copying the
* bytes out of the buffers. A direct {@link #idBuffer} compare operation is performed.
*
* @param otherIterator the other iterator to test against.
* @return true if both iterators have the same object id; false otherwise.
*/
public boolean idEqual(final AbstractTreeIterator otherIterator) {
return ObjectId.equals(
idBuffer(), idOffset(), otherIterator.idBuffer(), otherIterator.idOffset());
}
