/// <exception cref="System.Exception"/>
public virtual int Run(string[] argv)
{
string description = "hdfs lsSnapshottableDir: \n" + "\tGet the list of snapshottable directories that are owned by the current user.\n"
+ "\tReturn all the snapshottable directories if the current user is a super user.\n";
if (argv.Length != 0)
{
System.Console.Error.WriteLine("Usage: \n" + description);
return(1);
}
FileSystem fs = FileSystem.Get(GetConf());
if (!(fs is DistributedFileSystem))
{
System.Console.Error.WriteLine("LsSnapshottableDir can only be used in DistributedFileSystem"
);
return(1);
}
DistributedFileSystem dfs = (DistributedFileSystem)fs;
try
{
SnapshottableDirectoryStatus[] stats = dfs.GetSnapshottableDirListing();
SnapshottableDirectoryStatus.Print(stats, System.Console.Out);
}
catch (IOException e)
{
string[] content = e.GetLocalizedMessage().Split("\n");
System.Console.Error.WriteLine("lsSnapshottableDir: " + content[0]);
return(1);
}
return(0);
}
/// <summary>List all the snapshottable directories that are owned by the current user.
/// </summary>
/// <param name="userName">Current user name.</param>
/// <returns>
/// Snapshottable directories that are owned by the current user,
/// represented as an array of
/// <see cref="Org.Apache.Hadoop.Hdfs.Protocol.SnapshottableDirectoryStatus"/>
/// . If
/// <paramref name="userName"/>
/// is null, return all the snapshottable dirs.
/// </returns>
public virtual SnapshottableDirectoryStatus[] GetSnapshottableDirListing(string userName
)
{
if (snapshottables.IsEmpty())
{
return(null);
}
IList <SnapshottableDirectoryStatus> statusList = new AList <SnapshottableDirectoryStatus
>();
foreach (INodeDirectory dir in snapshottables.Values)
{
if (userName == null || userName.Equals(dir.GetUserName()))
{
SnapshottableDirectoryStatus status = new SnapshottableDirectoryStatus(dir.GetModificationTime
(), dir.GetAccessTime(), dir.GetFsPermission(), dir.GetUserName(), dir.GetGroupName
(), dir.GetLocalNameBytes(), dir.GetId(), dir.GetChildrenNum(Org.Apache.Hadoop.Hdfs.Server.Namenode.Snapshot.Snapshot
.CurrentStateId), dir.GetDirectorySnapshottableFeature().GetNumSnapshots(), dir.
GetDirectorySnapshottableFeature().GetSnapshotQuota(), dir.GetParent() == null ?
DFSUtil.EmptyBytes : DFSUtil.String2Bytes(dir.GetParent().GetFullPathName()));
statusList.AddItem(status);
}
}
statusList.Sort(SnapshottableDirectoryStatus.Comparator);
return(Sharpen.Collections.ToArray(statusList, new SnapshottableDirectoryStatus[statusList
.Count]));
}
