/// <summary>Load FileDiff list for a file with snapshot feature</summary>
/// <exception cref="System.IO.IOException"/>
private void LoadFileDiffList(InputStream @in, INodeFile file, int size)
{
FileDiffList diffs = new FileDiffList();
FSImageFormatProtobuf.LoaderContext state = parent.GetLoaderContext();
for (int i = 0; i < size; i++)
{
FsImageProto.SnapshotDiffSection.FileDiff pbf = FsImageProto.SnapshotDiffSection.FileDiff
.ParseDelimitedFrom(@in);
INodeFileAttributes copy = null;
if (pbf.HasSnapshotCopy())
{
FsImageProto.INodeSection.INodeFile fileInPb = pbf.GetSnapshotCopy();
PermissionStatus permission = FSImageFormatPBINode.Loader.LoadPermission(fileInPb
.GetPermission(), state.GetStringTable());
AclFeature acl = null;
if (fileInPb.HasAcl())
{
int[] entries = AclEntryStatusFormat.ToInt(FSImageFormatPBINode.Loader.LoadAclEntries
(fileInPb.GetAcl(), state.GetStringTable()));
acl = new AclFeature(entries);
}
XAttrFeature xAttrs = null;
if (fileInPb.HasXAttrs())
{
xAttrs = new XAttrFeature(FSImageFormatPBINode.Loader.LoadXAttrs(fileInPb.GetXAttrs
(), state.GetStringTable()));
}
copy = new INodeFileAttributes.SnapshotCopy(pbf.GetName().ToByteArray(), permission
, acl, fileInPb.GetModificationTime(), fileInPb.GetAccessTime(), (short)fileInPb
.GetReplication(), fileInPb.GetPreferredBlockSize(), unchecked ((byte)fileInPb.GetStoragePolicyID
()), xAttrs);
}
FileDiff diff = new FileDiff(pbf.GetSnapshotId(), copy, null, pbf.GetFileSize());
IList <HdfsProtos.BlockProto> bpl = pbf.GetBlocksList();
BlockInfoContiguous[] blocks = new BlockInfoContiguous[bpl.Count];
for (int j = 0; j < e; ++j)
{
Block blk = PBHelper.Convert(bpl[j]);
BlockInfoContiguous storedBlock = fsn.GetBlockManager().GetStoredBlock(blk);
if (storedBlock == null)
{
storedBlock = fsn.GetBlockManager().AddBlockCollection(new BlockInfoContiguous(blk
, copy.GetFileReplication()), file);
}
blocks[j] = storedBlock;
}
if (blocks.Length > 0)
{
diff.SetBlocks(blocks);
}
diffs.AddFirst(diff);
}
file.AddSnapshotFeature(diffs);
}
/// <exception cref="System.IO.IOException"/>
public static FileDiffList LoadFileDiffList(DataInput @in, FSImageFormat.Loader loader
)
{
int size = @in.ReadInt();
if (size == -1)
{
return(null);
}
else
{
FileDiffList diffs = new FileDiffList();
FileDiff posterior = null;
for (int i = 0; i < size; i++)
{
FileDiff d = LoadFileDiff(posterior, @in, loader);
diffs.AddFirst(d);
posterior = d;
}
return(diffs);
}
}