/// <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);
}
}
/// <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");
}