// do not store locations of last block
/// <summary>
/// Serialize a
/// <see cref="INodeFile"/>
/// node
/// </summary>
/// <param name="node">The node to write</param>
/// <param name="out">
/// The
/// <see cref="System.IO.DataOutputStream"/>
/// where the fields are written
/// </param>
/// <param name="writeBlock">Whether to write block information</param>
/// <exception cref="System.IO.IOException"/>
public static void WriteINodeFile(INodeFile file, DataOutput @out, bool writeUnderConstruction
)
{
WriteLocalName(file, @out);
@out.WriteLong(file.GetId());
@out.WriteShort(file.GetFileReplication());
@out.WriteLong(file.GetModificationTime());
@out.WriteLong(file.GetAccessTime());
@out.WriteLong(file.GetPreferredBlockSize());
WriteBlocks(file.GetBlocks(), @out);
SnapshotFSImageFormat.SaveFileDiffList(file, @out);
if (writeUnderConstruction)
{
if (file.IsUnderConstruction())
{
@out.WriteBoolean(true);
FileUnderConstructionFeature uc = file.GetFileUnderConstructionFeature();
WriteString(uc.GetClientName(), @out);
WriteString(uc.GetClientMachine(), @out);
}
else
{
@out.WriteBoolean(false);
}
}
WritePermissionStatus(file, @out);
}
/// <summary>Create FileStatus by file INode</summary>
/// <exception cref="System.IO.IOException"/>
internal static HdfsFileStatus CreateFileStatus(FSDirectory fsd, string fullPath,
byte[] path, INode node, byte storagePolicy, int snapshot, bool isRawPath, INodesInPath
iip)
{
long size = 0;
// length is zero for directories
short replication = 0;
long blocksize = 0;
bool isEncrypted;
FileEncryptionInfo feInfo = isRawPath ? null : fsd.GetFileEncryptionInfo(node, snapshot
, iip);
if (node.IsFile())
{
INodeFile fileNode = node.AsFile();
size = fileNode.ComputeFileSize(snapshot);
replication = fileNode.GetFileReplication(snapshot);
blocksize = fileNode.GetPreferredBlockSize();
isEncrypted = (feInfo != null) || (isRawPath && fsd.IsInAnEZ(INodesInPath.FromINode
(node)));
}
else
{
isEncrypted = fsd.IsInAnEZ(INodesInPath.FromINode(node));
}
int childrenNum = node.IsDirectory() ? node.AsDirectory().GetChildrenNum(snapshot
) : 0;
INodeAttributes nodeAttrs = fsd.GetAttributes(fullPath, path, node, snapshot);
return(new HdfsFileStatus(size, node.IsDirectory(), replication, blocksize, node.
GetModificationTime(snapshot), node.GetAccessTime(snapshot), GetPermissionForFileStatus
(nodeAttrs, isEncrypted), nodeAttrs.GetUserName(), nodeAttrs.GetGroupName(), node
.IsSymlink() ? node.AsSymlink().GetSymlink() : null, path, node.GetId(), childrenNum
, feInfo, storagePolicy));
}
/// <summary>Create FileStatus with location info by file INode</summary>
/// <exception cref="System.IO.IOException"/>
private static HdfsLocatedFileStatus CreateLocatedFileStatus(FSDirectory fsd, string
fullPath, byte[] path, INode node, byte storagePolicy, int snapshot, bool isRawPath
, INodesInPath iip)
{
System.Diagnostics.Debug.Assert(fsd.HasReadLock());
long size = 0;
// length is zero for directories
short replication = 0;
long blocksize = 0;
LocatedBlocks loc = null;
bool isEncrypted;
FileEncryptionInfo feInfo = isRawPath ? null : fsd.GetFileEncryptionInfo(node, snapshot
, iip);
if (node.IsFile())
{
INodeFile fileNode = node.AsFile();
size = fileNode.ComputeFileSize(snapshot);
replication = fileNode.GetFileReplication(snapshot);
blocksize = fileNode.GetPreferredBlockSize();
bool inSnapshot = snapshot != Org.Apache.Hadoop.Hdfs.Server.Namenode.Snapshot.Snapshot
.CurrentStateId;
bool isUc = !inSnapshot && fileNode.IsUnderConstruction();
long fileSize = !inSnapshot && isUc?fileNode.ComputeFileSizeNotIncludingLastUcBlock
() : size;
loc = fsd.GetFSNamesystem().GetBlockManager().CreateLocatedBlocks(fileNode.GetBlocks
(snapshot), fileSize, isUc, 0L, size, false, inSnapshot, feInfo);
if (loc == null)
{
loc = new LocatedBlocks();
}
isEncrypted = (feInfo != null) || (isRawPath && fsd.IsInAnEZ(INodesInPath.FromINode
(node)));
}
else
{
isEncrypted = fsd.IsInAnEZ(INodesInPath.FromINode(node));
}
int childrenNum = node.IsDirectory() ? node.AsDirectory().GetChildrenNum(snapshot
) : 0;
INodeAttributes nodeAttrs = fsd.GetAttributes(fullPath, path, node, snapshot);
HdfsLocatedFileStatus status = new HdfsLocatedFileStatus(size, node.IsDirectory()
, replication, blocksize, node.GetModificationTime(snapshot), node.GetAccessTime
(snapshot), GetPermissionForFileStatus(nodeAttrs, isEncrypted), nodeAttrs.GetUserName
(), nodeAttrs.GetGroupName(), node.IsSymlink() ? node.AsSymlink().GetSymlink() :
null, path, node.GetId(), loc, childrenNum, feInfo, storagePolicy);
// Set caching information for the located blocks.
if (loc != null)
{
CacheManager cacheManager = fsd.GetFSNamesystem().GetCacheManager();
foreach (LocatedBlock lb in loc.GetLocatedBlocks())
{
cacheManager.SetCachedLocations(lb);
}
}
return(status);
}
// Helper function that writes an INodeUnderConstruction
// into the output stream
//
/// <exception cref="System.IO.IOException"/>
internal static void WriteINodeUnderConstruction(DataOutputStream @out, INodeFile
cons, string path)
{
WriteString(path, @out);
@out.WriteLong(cons.GetId());
@out.WriteShort(cons.GetFileReplication());
@out.WriteLong(cons.GetModificationTime());
@out.WriteLong(cons.GetPreferredBlockSize());
WriteBlocks(cons.GetBlocks(), @out);
cons.GetPermissionStatus().Write(@out);
FileUnderConstructionFeature uc = cons.GetFileUnderConstructionFeature();
WriteString(uc.GetClientName(), @out);
WriteString(uc.GetClientMachine(), @out);
@out.WriteInt(0);
}
