/// <summary>Load DirectoryDiff list for a directory with snapshot feature</summary>
/// <exception cref="System.IO.IOException"/>
private void LoadDirectoryDiffList(InputStream @in, INodeDirectory dir, int size,
IList <INodeReference> refList)
{
if (!dir.IsWithSnapshot())
{
dir.AddSnapshotFeature(null);
}
DirectoryWithSnapshotFeature.DirectoryDiffList diffs = dir.GetDiffs();
FSImageFormatProtobuf.LoaderContext state = parent.GetLoaderContext();
for (int i = 0; i < size; i++)
{
// load a directory diff
FsImageProto.SnapshotDiffSection.DirectoryDiff diffInPb = FsImageProto.SnapshotDiffSection.DirectoryDiff
.ParseDelimitedFrom(@in);
int snapshotId = diffInPb.GetSnapshotId();
Org.Apache.Hadoop.Hdfs.Server.Namenode.Snapshot.Snapshot snapshot = snapshotMap[snapshotId
];
int childrenSize = diffInPb.GetChildrenSize();
bool useRoot = diffInPb.GetIsSnapshotRoot();
INodeDirectoryAttributes copy = null;
if (useRoot)
{
copy = snapshot.GetRoot();
}
else
{
if (diffInPb.HasSnapshotCopy())
{
FsImageProto.INodeSection.INodeDirectory dirCopyInPb = diffInPb.GetSnapshotCopy();
byte[] name = diffInPb.GetName().ToByteArray();
PermissionStatus permission = FSImageFormatPBINode.Loader.LoadPermission(dirCopyInPb
.GetPermission(), state.GetStringTable());
AclFeature acl = null;
if (dirCopyInPb.HasAcl())
{
int[] entries = AclEntryStatusFormat.ToInt(FSImageFormatPBINode.Loader.LoadAclEntries
(dirCopyInPb.GetAcl(), state.GetStringTable()));
acl = new AclFeature(entries);
}
XAttrFeature xAttrs = null;
if (dirCopyInPb.HasXAttrs())
{
xAttrs = new XAttrFeature(FSImageFormatPBINode.Loader.LoadXAttrs(dirCopyInPb.GetXAttrs
(), state.GetStringTable()));
}
long modTime = dirCopyInPb.GetModificationTime();
bool noQuota = dirCopyInPb.GetNsQuota() == -1 && dirCopyInPb.GetDsQuota() == -1 &&
(!dirCopyInPb.HasTypeQuotas());
if (noQuota)
{
copy = new INodeDirectoryAttributes.SnapshotCopy(name, permission, acl, modTime,
xAttrs);
}
else
{
EnumCounters <StorageType> typeQuotas = null;
if (dirCopyInPb.HasTypeQuotas())
{
ImmutableList <QuotaByStorageTypeEntry> qes = FSImageFormatPBINode.Loader.LoadQuotaByStorageTypeEntries
(dirCopyInPb.GetTypeQuotas());
typeQuotas = new EnumCounters <StorageType>(typeof(StorageType), HdfsConstants.QuotaReset
);
foreach (QuotaByStorageTypeEntry qe in qes)
{
if (qe.GetQuota() >= 0 && qe.GetStorageType() != null && qe.GetStorageType().SupportTypeQuota
())
{
typeQuotas.Set(qe.GetStorageType(), qe.GetQuota());
}
}
}
copy = new INodeDirectoryAttributes.CopyWithQuota(name, permission, acl, modTime,
dirCopyInPb.GetNsQuota(), dirCopyInPb.GetDsQuota(), typeQuotas, xAttrs);
}
}
}
// load created list
IList <INode> clist = LoadCreatedList(@in, dir, diffInPb.GetCreatedListSize());
// load deleted list
IList <INode> dlist = LoadDeletedList(refList, @in, dir, diffInPb.GetDeletedINodeList
(), diffInPb.GetDeletedINodeRefList());
// create the directory diff
DirectoryWithSnapshotFeature.DirectoryDiff diff = new DirectoryWithSnapshotFeature.DirectoryDiff
(snapshotId, copy, null, childrenSize, clist, dlist, useRoot);
diffs.AddFirst(diff);
}
}
/// <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);
}