private ObjectId writeBytes(final byte[] bytes) throws IOException {
final ObjectWriter objectWriter = new ObjectWriter(repository);
final ObjectId writeBlob = objectWriter.writeBlob(bytes);
return writeBlob;
}
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();
}
