| 1 | // $Id: PnfsGetStorageInfoMessage.java,v 1.7 2006-04-11 09:47:53 tigran Exp $ |
| 2 | package diskCacheV111.vehicles; |
| 3 | |
| 4 | import java.util.Set; |
| 5 | |
| 6 | import diskCacheV111.util.*; |
| 7 | import org.dcache.vehicles.FileAttributes; |
| 8 | import org.dcache.namespace.FileAttribute; |
| 9 | |
| 10 | import static org.dcache.namespace.FileAttribute.*; |
| 11 | |
| 12 | public class PnfsGetStorageInfoMessage extends PnfsGetFileMetaDataMessage { |
| 13 | |
| 14 | private StorageInfo _storageInfo = null ; |
| 15 | private boolean _followLinks = true; |
| 16 | |
| 17 | private static final long serialVersionUID = -2574949600859502380L; |
| 18 | |
| 19 | public PnfsGetStorageInfoMessage() |
| 20 | { |
| 21 | super(); |
| 22 | _attributes.add(STORAGEINFO); |
| 23 | } |
| 24 | |
| 25 | public PnfsGetStorageInfoMessage(Set<FileAttribute> attr) |
| 26 | { |
| 27 | super(attr); |
| 28 | _attributes.add(STORAGEINFO); |
| 29 | } |
| 30 | |
| 31 | public PnfsGetStorageInfoMessage(PnfsId pnfsId) |
| 32 | { |
| 33 | super(pnfsId); |
| 34 | _attributes.add(STORAGEINFO); |
| 35 | } |
| 36 | |
| 37 | /* To ensure backwards compatibility with pre 1.9.6 clients, we |
| 38 | * explicitly add attributes compatible with |
| 39 | * PnfsGetStorageInfoMessage to the set of requested attributes if |
| 40 | * the attribute set is null. |
| 41 | */ |
| 42 | @Override |
| 43 | public Set<FileAttribute> getRequestedAttributes() |
| 44 | { |
| 45 | Set<FileAttribute> attributes = _attributes; |
| 46 | if (attributes == null) { |
| 47 | attributes = super.getRequestedAttributes(); |
| 48 | attributes.add(STORAGEINFO); |
| 49 | } |
| 50 | return attributes; |
| 51 | } |
| 52 | |
| 53 | @Override |
| 54 | public void setFileAttributes(FileAttributes fileAttributes) |
| 55 | { |
| 56 | super.setFileAttributes(fileAttributes); |
| 57 | |
| 58 | /* For backwards compatibility with old versions we set this |
| 59 | * field. We do this even though we don't use the field. |
| 60 | */ |
| 61 | if (fileAttributes.isDefined(STORAGEINFO)) { |
| 62 | _storageInfo = fileAttributes.getStorageInfo(); |
| 63 | } |
| 64 | } |
| 65 | |
| 66 | public StorageInfo getStorageInfo() |
| 67 | { |
| 68 | return |
| 69 | (_fileAttributes == null || !_fileAttributes.isDefined(STORAGEINFO)) |
| 70 | ? null |
| 71 | : _fileAttributes.getStorageInfo(); |
| 72 | } |
| 73 | |
| 74 | public boolean resolve() { return this._followLinks; } |
| 75 | public void setResolve(boolean followLinks) |
| 76 | { |
| 77 | _followLinks = followLinks; |
| 78 | super.setResolve(followLinks); |
| 79 | } |
| 80 | } |