/// <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
));
}