/// <exception cref="Org.Apache.Hadoop.Hdfs.Protocol.QuotaExceededException"/>
internal RenameOperation(FSDirectory fsd, string src, string dst, INodesInPath srcIIP
, INodesInPath dstIIP)
{
this.fsd = fsd;
this.src = src;
this.dst = dst;
this.srcIIP = srcIIP;
this.dstIIP = dstIIP;
this.srcParentIIP = srcIIP.GetParentINodesInPath();
this.dstParentIIP = dstIIP.GetParentINodesInPath();
BlockStoragePolicySuite bsps = fsd.GetBlockStoragePolicySuite();
srcChild = this.srcIIP.GetLastINode();
srcChildName = srcChild.GetLocalNameBytes();
int srcLatestSnapshotId = srcIIP.GetLatestSnapshotId();
isSrcInSnapshot = srcChild.IsInLatestSnapshot(srcLatestSnapshotId);
srcChildIsReference = srcChild.IsReference();
srcParent = this.srcIIP.GetINode(-2).AsDirectory();
// Record the snapshot on srcChild. After the rename, before any new
// snapshot is taken on the dst tree, changes will be recorded in the
// latest snapshot of the src tree.
if (isSrcInSnapshot)
{
srcChild.RecordModification(srcLatestSnapshotId);
}
// check srcChild for reference
srcRefDstSnapshot = srcChildIsReference ? srcChild.AsReference().GetDstSnapshotId
() : Org.Apache.Hadoop.Hdfs.Server.Namenode.Snapshot.Snapshot.CurrentStateId;
oldSrcCounts = new QuotaCounts.Builder().Build();
if (isSrcInSnapshot)
{
INodeReference.WithName withName = srcParent.ReplaceChild4ReferenceWithName(srcChild
, srcLatestSnapshotId);
withCount = (INodeReference.WithCount)withName.GetReferredINode();
srcChild = withName;
this.srcIIP = INodesInPath.Replace(srcIIP, srcIIP.Length() - 1, srcChild);
// get the counts before rename
withCount.GetReferredINode().ComputeQuotaUsage(bsps, oldSrcCounts, true);
}
else
{
if (srcChildIsReference)
{
// srcChild is reference but srcChild is not in latest snapshot
withCount = (INodeReference.WithCount)srcChild.AsReference().GetReferredINode();
}
else
{
withCount = null;
}
}
}
/// <exception cref="Org.Apache.Hadoop.Hdfs.Protocol.QuotaExceededException"/>
/// <exception cref="Org.Apache.Hadoop.FS.UnresolvedLinkException"/>
/// <exception cref="Org.Apache.Hadoop.Hdfs.Protocol.AclException"/>
/// <exception cref="Org.Apache.Hadoop.FS.FileAlreadyExistsException"/>
internal static void MkdirForEditLog(FSDirectory fsd, long inodeId, string src, PermissionStatus
permissions, IList <AclEntry> aclEntries, long timestamp)
{
System.Diagnostics.Debug.Assert(fsd.HasWriteLock());
INodesInPath iip = fsd.GetINodesInPath(src, false);
byte[] localName = iip.GetLastLocalName();
INodesInPath existing = iip.GetParentINodesInPath();
Preconditions.CheckState(existing.GetLastINode() != null);
UnprotectedMkdir(fsd, inodeId, existing, localName, permissions, aclEntries, timestamp
);
}
