/// <summary>Load the snapshot diff section from fsimage.</summary>
/// <exception cref="System.IO.IOException"/>
public void LoadSnapshotDiffSection(InputStream @in)
{
IList <INodeReference> refList = parent.GetLoaderContext().GetRefList();
while (true)
{
FsImageProto.SnapshotDiffSection.DiffEntry entry = FsImageProto.SnapshotDiffSection.DiffEntry
.ParseDelimitedFrom(@in);
if (entry == null)
{
break;
}
long inodeId = entry.GetInodeId();
INode inode = fsDir.GetInode(inodeId);
FsImageProto.SnapshotDiffSection.DiffEntry.Type type = entry.GetType();
switch (type)
{
case FsImageProto.SnapshotDiffSection.DiffEntry.Type.Filediff:
{
LoadFileDiffList(@in, inode.AsFile(), entry.GetNumOfDiff());
break;
}
case FsImageProto.SnapshotDiffSection.DiffEntry.Type.Directorydiff:
{
LoadDirectoryDiffList(@in, inode.AsDirectory(), entry.GetNumOfDiff(), refList);
break;
}
}
}
}
/// <exception cref="System.IO.IOException"/>
private void SerializeFileDiffList(INodeFile file, OutputStream @out)
{
FileWithSnapshotFeature sf = file.GetFileWithSnapshotFeature();
if (sf != null)
{
IList <FileDiff> diffList = sf.GetDiffs().AsList();
FsImageProto.SnapshotDiffSection.DiffEntry entry = ((FsImageProto.SnapshotDiffSection.DiffEntry
)FsImageProto.SnapshotDiffSection.DiffEntry.NewBuilder().SetInodeId(file.GetId()
).SetType(FsImageProto.SnapshotDiffSection.DiffEntry.Type.Filediff).SetNumOfDiff
(diffList.Count).Build());
entry.WriteDelimitedTo(@out);
for (int i = diffList.Count - 1; i >= 0; i--)
{
FileDiff diff = diffList[i];
FsImageProto.SnapshotDiffSection.FileDiff.Builder fb = FsImageProto.SnapshotDiffSection.FileDiff
.NewBuilder().SetSnapshotId(diff.GetSnapshotId()).SetFileSize(diff.GetFileSize()
);
if (diff.GetBlocks() != null)
{
foreach (Block block in diff.GetBlocks())
{
fb.AddBlocks(PBHelper.Convert(block));
}
}
INodeFileAttributes copy = diff.snapshotINode;
if (copy != null)
{
fb.SetName(ByteString.CopyFrom(copy.GetLocalNameBytes())).SetSnapshotCopy(FSImageFormatPBINode.Saver.BuildINodeFile
(copy, parent.GetSaverContext()));
}
((FsImageProto.SnapshotDiffSection.FileDiff)fb.Build()).WriteDelimitedTo(@out);
}
}
}
/// <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);
}
}
}
/// <exception cref="System.IO.IOException"/>
private void DumpSnapshotDiffSection(InputStream @in)
{
@out.Write("<SnapshotDiffSection>");
while (true)
{
FsImageProto.SnapshotDiffSection.DiffEntry e = FsImageProto.SnapshotDiffSection.DiffEntry
.ParseDelimitedFrom(@in);
if (e == null)
{
break;
}
@out.Write("<diff>");
O("inodeid", e.GetInodeId());
switch (e.GetType())
{
case FsImageProto.SnapshotDiffSection.DiffEntry.Type.Filediff:
{
for (int i = 0; i < e.GetNumOfDiff(); ++i)
{
@out.Write("<filediff>");
FsImageProto.SnapshotDiffSection.FileDiff f = FsImageProto.SnapshotDiffSection.FileDiff
.ParseDelimitedFrom(@in);
O("snapshotId", f.GetSnapshotId()).O("size", f.GetFileSize()).O("name", f.GetName
().ToStringUtf8());
@out.Write("</filediff>\n");
}
break;
}
case FsImageProto.SnapshotDiffSection.DiffEntry.Type.Directorydiff:
{
for (int i = 0; i < e.GetNumOfDiff(); ++i)
{
@out.Write("<dirdiff>");
FsImageProto.SnapshotDiffSection.DirectoryDiff d = FsImageProto.SnapshotDiffSection.DirectoryDiff
.ParseDelimitedFrom(@in);
O("snapshotId", d.GetSnapshotId()).O("isSnapshotroot", d.GetIsSnapshotRoot()).O("childrenSize"
, d.GetChildrenSize()).O("name", d.GetName().ToStringUtf8());
for (int j = 0; j < d.GetCreatedListSize(); ++j)
{
FsImageProto.SnapshotDiffSection.CreatedListEntry ce = FsImageProto.SnapshotDiffSection.CreatedListEntry
.ParseDelimitedFrom(@in);
@out.Write("<created>");
O("name", ce.GetName().ToStringUtf8());
@out.Write("</created>\n");
}
foreach (long did in d.GetDeletedINodeList())
{
@out.Write("<deleted>");
O("inode", did);
@out.Write("</deleted>\n");
}
foreach (int dRefid in d.GetDeletedINodeRefList())
{
@out.Write("<deleted>");
O("inodereference-index", dRefid);
@out.Write("</deleted>\n");
}
@out.Write("</dirdiff>\n");
}
break;
}
default:
{
break;
}
}
@out.Write("</diff>");
}
@out.Write("</SnapshotDiffSection>\n");
}