/// <summary>save all the snapshottable directories and snapshots to fsimage</summary>
/// <exception cref="System.IO.IOException"/>
public void SerializeSnapshotSection(OutputStream @out)
{
SnapshotManager sm = fsn.GetSnapshotManager();
FsImageProto.SnapshotSection.Builder b = FsImageProto.SnapshotSection.NewBuilder(
).SetSnapshotCounter(sm.GetSnapshotCounter()).SetNumSnapshots(sm.GetNumSnapshots
());
INodeDirectory[] snapshottables = sm.GetSnapshottableDirs();
foreach (INodeDirectory sdir in snapshottables)
{
b.AddSnapshottableDir(sdir.GetId());
}
((FsImageProto.SnapshotSection)b.Build()).WriteDelimitedTo(@out);
int i = 0;
foreach (INodeDirectory sdir_1 in snapshottables)
{
foreach (Org.Apache.Hadoop.Hdfs.Server.Namenode.Snapshot.Snapshot s in sdir_1.GetDirectorySnapshottableFeature
().GetSnapshotList())
{
Snapshot.Root sroot = s.GetRoot();
FsImageProto.SnapshotSection.Snapshot.Builder sb = FsImageProto.SnapshotSection.Snapshot
.NewBuilder().SetSnapshotId(s.GetId());
FsImageProto.INodeSection.INodeDirectory.Builder db = FSImageFormatPBINode.Saver.BuildINodeDirectory
(sroot, parent.GetSaverContext());
FsImageProto.INodeSection.INode r = ((FsImageProto.INodeSection.INode)FsImageProto.INodeSection.INode
.NewBuilder().SetId(sroot.GetId()).SetType(FsImageProto.INodeSection.INode.Type.
Directory).SetName(ByteString.CopyFrom(sroot.GetLocalNameBytes())).SetDirectory(
db).Build());
((FsImageProto.SnapshotSection.Snapshot)sb.SetRoot(r).Build()).WriteDelimitedTo(@out
);
i++;
if (i % FSImageFormatProtobuf.Saver.CheckCancelInterval == 0)
{
context.CheckCancelled();
}
}
}
Preconditions.CheckState(i == sm.GetNumSnapshots());
parent.CommitSection(headers, FSImageFormatProtobuf.SectionName.Snapshot);
}
internal Snapshot(int id, INodeDirectory dir, INodeDirectory parent)
{
this.id = id;
this.root = new Snapshot.Root(dir);
this.root.SetParent(parent);
}
