/// <summary>Add the volume of the passed-in directory to the list of volumes to check.
/// </summary>
/// <remarks>
/// Add the volume of the passed-in directory to the list of volumes to check.
/// If <code>required</code> is true, and this volume is already present, but
/// is marked redundant, it will be marked required. If the volume is already
/// present but marked required then this method is a no-op.
/// </remarks>
/// <param name="directoryToCheck">The directory whose volume will be checked for available space.
/// </param>
/// <exception cref="System.IO.IOException"/>
private void AddDirToCheck(URI directoryToCheck, bool required)
{
FilePath dir = new FilePath(directoryToCheck.GetPath());
if (!dir.Exists())
{
throw new IOException("Missing directory " + dir.GetAbsolutePath());
}
NameNodeResourceChecker.CheckedVolume newVolume = new NameNodeResourceChecker.CheckedVolume
(this, dir, required);
NameNodeResourceChecker.CheckedVolume volume = volumes[newVolume.GetVolume()];
if (volume == null || !volume.IsRequired())
{
volumes[newVolume.GetVolume()] = newVolume;
}
}
