private void cachePeeledState(Ref oldLeaf, Ref newLeaf) {
// TODO(spearce) Use an ExecutorService here
try {
RepositoryKey repo = repository.getRepositoryKey();
RefKey key = RefKey.create(repo, newLeaf.getName());
RefData oldData = ((DhtRef) oldLeaf).getRefData();
RefData newData = ((DhtRef) newLeaf).getRefData();
db.ref().compareAndPut(key, oldData, newData);
} catch (TimeoutException e) {
// Ignore a timeout here, we were only trying to update
// a cached value to save peeling costs in the future.
} catch (DhtException e) {
// Ignore a database error, this was only an attempt to
// fix a value that could be cached to save time later.
}
}
@Override
public DhtRefUpdate newUpdate(String refName, boolean detach) throws IOException {
boolean detachingSymbolicRef = false;
DhtRef ref = getOneRef(refName);
if (ref == null) ref = new DhtObjectIdRef(refName, NONE);
else detachingSymbolicRef = detach && ref.isSymbolic();
if (detachingSymbolicRef) {
RefData src = ((DhtRef) ref.getLeaf()).getRefData();
RefData.Builder b = RefData.newBuilder(ref.getRefData());
b.clearSymref();
b.setTarget(src.getTarget());
ref = new DhtObjectIdRef(refName, b.build());
}
RepositoryKey repo = repository.getRepositoryKey();
DhtRefUpdate update = new DhtRefUpdate(this, repo, db, ref);
if (detachingSymbolicRef) update.setDetachingSymbolicRef();
return update;
}
private Set<Map.Entry<RefKey, RefData>> scan() throws DhtException, TimeoutException {
// TODO(spearce) Do we need to perform READ_REPAIR here?
RepositoryKey repo = repository.getRepositoryKey();
return db.ref().getAll(Context.LOCAL, repo).entrySet();
}
