/// <summary>Create a new cache pool based on a CachePoolInfo object and the defaults.
/// </summary>
/// <remarks>
/// Create a new cache pool based on a CachePoolInfo object and the defaults.
/// We will fill in information that was not supplied according to the
/// defaults.
/// </remarks>
/// <exception cref="System.IO.IOException"/>
internal static CachePool CreateFromInfoAndDefaults(CachePoolInfo info)
{
UserGroupInformation ugi = null;
string ownerName = info.GetOwnerName();
if (ownerName == null)
{
ugi = NameNode.GetRemoteUser();
ownerName = ugi.GetShortUserName();
}
string groupName = info.GetGroupName();
if (groupName == null)
{
if (ugi == null)
{
ugi = NameNode.GetRemoteUser();
}
groupName = ugi.GetPrimaryGroupName();
}
FsPermission mode = (info.GetMode() == null) ? FsPermission.GetCachePoolDefault()
: info.GetMode();
long limit = info.GetLimit() == null ? CachePoolInfo.DefaultLimit : info.GetLimit
();
long maxRelativeExpiry = info.GetMaxRelativeExpiryMs() == null ? CachePoolInfo.DefaultMaxRelativeExpiry
: info.GetMaxRelativeExpiryMs();
return(new CachePool(info.GetPoolName(), ownerName, groupName, mode, limit, maxRelativeExpiry
));
}
/// <exception cref="Org.Xml.Sax.SAXException"/>
public static void WriteCachePoolInfo(ContentHandler contentHandler, CachePoolInfo
info)
{
XMLUtils.AddSaxString(contentHandler, "POOLNAME", info.GetPoolName());
string ownerName = info.GetOwnerName();
string groupName = info.GetGroupName();
long limit = info.GetLimit();
FsPermission mode = info.GetMode();
long maxRelativeExpiry = info.GetMaxRelativeExpiryMs();
if (ownerName != null)
{
XMLUtils.AddSaxString(contentHandler, "OWNERNAME", ownerName);
}
if (groupName != null)
{
XMLUtils.AddSaxString(contentHandler, "GROUPNAME", groupName);
}
if (mode != null)
{
FSEditLogOp.FsPermissionToXml(contentHandler, mode);
}
if (limit != null)
{
XMLUtils.AddSaxString(contentHandler, "LIMIT", System.Convert.ToString(limit));
}
if (maxRelativeExpiry != null)
{
XMLUtils.AddSaxString(contentHandler, "MAXRELATIVEEXPIRY", System.Convert.ToString
(maxRelativeExpiry));
}
}
/// <exception cref="System.IO.IOException"/>
public static void WriteCachePoolInfo(DataOutputStream @out, CachePoolInfo info)
{
WriteString(info.GetPoolName(), @out);
string ownerName = info.GetOwnerName();
string groupName = info.GetGroupName();
long limit = info.GetLimit();
FsPermission mode = info.GetMode();
long maxRelativeExpiry = info.GetMaxRelativeExpiryMs();
bool hasOwner;
bool hasGroup;
bool hasMode;
bool hasLimit;
bool hasMaxRelativeExpiry;
hasOwner = ownerName != null;
hasGroup = groupName != null;
hasMode = mode != null;
hasLimit = limit != null;
hasMaxRelativeExpiry = maxRelativeExpiry != null;
int flags = (hasOwner ? unchecked ((int)(0x1)) : 0) | (hasGroup ? unchecked ((int)(
0x2)) : 0) | (hasMode ? unchecked ((int)(0x4)) : 0) | (hasLimit ? unchecked ((int)
(0x8)) : 0) | (hasMaxRelativeExpiry ? unchecked ((int)(0x10)) : 0);
WriteInt(flags, @out);
if (hasOwner)
{
WriteString(ownerName, @out);
}
if (hasGroup)
{
WriteString(groupName, @out);
}
if (hasMode)
{
mode.Write(@out);
}
if (hasLimit)
{
WriteLong(limit, @out);
}
if (hasMaxRelativeExpiry)
{
WriteLong(maxRelativeExpiry, @out);
}
}
/// <summary>Create a new cache pool based on a CachePoolInfo object.</summary>
/// <remarks>
/// Create a new cache pool based on a CachePoolInfo object.
/// No fields in the CachePoolInfo can be blank.
/// </remarks>
internal static CachePool CreateFromInfo(CachePoolInfo info)
{
return(new CachePool(info.GetPoolName(), info.GetOwnerName(), info.GetGroupName()
, info.GetMode(), info.GetLimit(), info.GetMaxRelativeExpiryMs()));
}
/// <exception cref="System.IO.IOException"/>
public virtual int Run(Configuration conf, IList <string> args)
{
string name = StringUtils.PopFirstNonOption(args);
bool printStats = StringUtils.PopOption("-stats", args);
if (!args.IsEmpty())
{
System.Console.Error.Write("Can't understand arguments: " + Joiner.On(" ").Join(args
) + "\n");
System.Console.Error.WriteLine("Usage is " + GetShortUsage());
return(1);
}
DistributedFileSystem dfs = AdminHelper.GetDFS(conf);
TableListing.Builder builder = new TableListing.Builder().AddField("NAME", TableListing.Justification
.Left).AddField("OWNER", TableListing.Justification.Left).AddField("GROUP", TableListing.Justification
.Left).AddField("MODE", TableListing.Justification.Left).AddField("LIMIT", TableListing.Justification
.Right).AddField("MAXTTL", TableListing.Justification.Right);
if (printStats)
{
builder.AddField("BYTES_NEEDED", TableListing.Justification.Right).AddField("BYTES_CACHED"
, TableListing.Justification.Right).AddField("BYTES_OVERLIMIT", TableListing.Justification
.Right).AddField("FILES_NEEDED", TableListing.Justification.Right).AddField("FILES_CACHED"
, TableListing.Justification.Right);
}
TableListing listing = builder.Build();
int numResults = 0;
try
{
RemoteIterator <CachePoolEntry> iter = dfs.ListCachePools();
while (iter.HasNext())
{
CachePoolEntry entry = iter.Next();
CachePoolInfo info = entry.GetInfo();
List <string> row = new List <string>();
if (name == null || info.GetPoolName().Equals(name))
{
row.AddItem(info.GetPoolName());
row.AddItem(info.GetOwnerName());
row.AddItem(info.GetGroupName());
row.AddItem(info.GetMode() != null ? info.GetMode().ToString() : null);
long limit = info.GetLimit();
string limitString;
if (limit != null && limit.Equals(CachePoolInfo.LimitUnlimited))
{
limitString = "unlimited";
}
else
{
limitString = string.Empty + limit;
}
row.AddItem(limitString);
long maxTtl = info.GetMaxRelativeExpiryMs();
string maxTtlString = null;
if (maxTtl != null)
{
if (maxTtl == CachePoolInfo.RelativeExpiryNever)
{
maxTtlString = "never";
}
else
{
maxTtlString = DFSUtil.DurationToString(maxTtl);
}
}
row.AddItem(maxTtlString);
if (printStats)
{
CachePoolStats stats = entry.GetStats();
row.AddItem(System.Convert.ToString(stats.GetBytesNeeded()));
row.AddItem(System.Convert.ToString(stats.GetBytesCached()));
row.AddItem(System.Convert.ToString(stats.GetBytesOverlimit()));
row.AddItem(System.Convert.ToString(stats.GetFilesNeeded()));
row.AddItem(System.Convert.ToString(stats.GetFilesCached()));
}
listing.AddRow(Sharpen.Collections.ToArray(row, new string[row.Count]));
++numResults;
if (name != null)
{
break;
}
}
}
}
catch (IOException e)
{
System.Console.Error.WriteLine(AdminHelper.PrettifyException(e));
return(2);
}
System.Console.Out.Write(string.Format("Found %d result%s.%n", numResults, (numResults
== 1 ? string.Empty : "s")));
if (numResults > 0)
{
System.Console.Out.Write(listing);
}
// If list pools succeed, we return 0 (success exit code)
return(0);
}
