/// <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);
}
/// <exception cref="System.IO.IOException"/>
private static IList <XAttr> GetXAttrs(FSDirectory fsd, string src)
{
string srcs = FSDirectory.NormalizePath(src);
fsd.ReadLock();
try
{
INodesInPath iip = fsd.GetINodesInPath(srcs, true);
INode inode = FSDirectory.ResolveLastINode(iip);
int snapshotId = iip.GetPathSnapshotId();
return(XAttrStorage.ReadINodeXAttrs(fsd.GetAttributes(src, inode.GetLocalNameBytes
(), inode, snapshotId)));
}
finally
{
fsd.ReadUnlock();
}
}
/// <exception cref="System.IO.IOException"/>
internal static AclStatus GetAclStatus(FSDirectory fsd, string src)
{
CheckAclsConfigFlag(fsd);
FSPermissionChecker pc = fsd.GetPermissionChecker();
byte[][] pathComponents = FSDirectory.GetPathComponentsForReservedPath(src);
src = fsd.ResolvePath(pc, src, pathComponents);
string srcs = FSDirectory.NormalizePath(src);
fsd.ReadLock();
try
{
// There is no real inode for the path ending in ".snapshot", so return a
// non-null, unpopulated AclStatus. This is similar to getFileInfo.
if (srcs.EndsWith(HdfsConstants.SeparatorDotSnapshotDir) && fsd.GetINode4DotSnapshot
(srcs) != null)
{
return(new AclStatus.Builder().Owner(string.Empty).Group(string.Empty).Build());
}
INodesInPath iip = fsd.GetINodesInPath(srcs, true);
if (fsd.IsPermissionEnabled())
{
fsd.CheckTraverse(pc, iip);
}
INode inode = FSDirectory.ResolveLastINode(iip);
int snapshotId = iip.GetPathSnapshotId();
IList <AclEntry> acl = AclStorage.ReadINodeAcl(fsd.GetAttributes(src, inode.GetLocalNameBytes
(), inode, snapshotId));
FsPermission fsPermission = inode.GetFsPermission(snapshotId);
return(new AclStatus.Builder().Owner(inode.GetUserName()).Group(inode.GetGroupName
()).StickyBit(fsPermission.GetStickyBit()).SetPermission(fsPermission).AddEntries
(acl).Build());
}
finally
{
fsd.ReadUnlock();
}
}