/// <exception cref="System.IO.IOException"/>
private void LoadSnapshots(InputStream @in, int size)
{
for (int i = 0; i < size; i++)
{
FsImageProto.SnapshotSection.Snapshot pbs = FsImageProto.SnapshotSection.Snapshot
.ParseDelimitedFrom(@in);
INodeDirectory root = FSImageFormatPBINode.Loader.LoadINodeDirectory(pbs.GetRoot(
), parent.GetLoaderContext());
int sid = pbs.GetSnapshotId();
INodeDirectory parent = fsDir.GetInode(root.GetId()).AsDirectory();
Org.Apache.Hadoop.Hdfs.Server.Namenode.Snapshot.Snapshot snapshot = new Org.Apache.Hadoop.Hdfs.Server.Namenode.Snapshot.Snapshot
(sid, root, parent);
// add the snapshot to parent, since we follow the sequence of
// snapshotsByNames when saving, we do not need to sort when loading
parent.GetDirectorySnapshottableFeature().AddSnapshot(snapshot);
snapshotMap[sid] = snapshot;
}
}
/// <exception cref="System.IO.IOException"/>
private void SerializeDirDiffList(INodeDirectory dir, IList <INodeReference> refList
, OutputStream @out)
{
DirectoryWithSnapshotFeature sf = dir.GetDirectoryWithSnapshotFeature();
if (sf != null)
{
IList <DirectoryWithSnapshotFeature.DirectoryDiff> diffList = sf.GetDiffs().AsList
();
FsImageProto.SnapshotDiffSection.DiffEntry entry = ((FsImageProto.SnapshotDiffSection.DiffEntry
)FsImageProto.SnapshotDiffSection.DiffEntry.NewBuilder().SetInodeId(dir.GetId())
.SetType(FsImageProto.SnapshotDiffSection.DiffEntry.Type.Directorydiff).SetNumOfDiff
(diffList.Count).Build());
entry.WriteDelimitedTo(@out);
for (int i = diffList.Count - 1; i >= 0; i--)
{
// reverse order!
DirectoryWithSnapshotFeature.DirectoryDiff diff = diffList[i];
FsImageProto.SnapshotDiffSection.DirectoryDiff.Builder db = FsImageProto.SnapshotDiffSection.DirectoryDiff
.NewBuilder().SetSnapshotId(diff.GetSnapshotId()).SetChildrenSize(diff.GetChildrenSize
()).SetIsSnapshotRoot(diff.IsSnapshotRoot());
INodeDirectoryAttributes copy = diff.snapshotINode;
if (!diff.IsSnapshotRoot() && copy != null)
{
db.SetName(ByteString.CopyFrom(copy.GetLocalNameBytes())).SetSnapshotCopy(FSImageFormatPBINode.Saver.BuildINodeDirectory
(copy, parent.GetSaverContext()));
}
// process created list and deleted list
IList <INode> created = diff.GetChildrenDiff().GetList(Diff.ListType.Created);
db.SetCreatedListSize(created.Count);
IList <INode> deleted = diff.GetChildrenDiff().GetList(Diff.ListType.Deleted);
foreach (INode d in deleted)
{
if (d.IsReference())
{
refList.AddItem(d.AsReference());
db.AddDeletedINodeRef(refList.Count - 1);
}
else
{
db.AddDeletedINode(d.GetId());
}
}
((FsImageProto.SnapshotDiffSection.DirectoryDiff)db.Build()).WriteDelimitedTo(@out
);
SaveCreatedList(created, @out);
}
}
}
/// <summary>
/// Remove the given snapshottable directory from
/// <see cref="snapshottables"/>
/// .
/// </summary>
private void RemoveSnapshottable(INodeDirectory s)
{
Sharpen.Collections.Remove(snapshottables, s.GetId());
}
/// <summary>
/// Add the given snapshottable directory to
/// <see cref="snapshottables"/>
/// .
/// </summary>
public virtual void AddSnapshottable(INodeDirectory dir)
{
Preconditions.CheckArgument(dir.IsSnapshottable());
snapshottables[dir.GetId()] = dir;
}