| 1 | package org.dcache.vehicles; |
| 2 | |
| 3 | import diskCacheV111.vehicles.*; |
| 4 | import diskCacheV111.util.PnfsId; |
| 5 | import org.dcache.namespace.FileAttribute; |
| 6 | import java.util.Set; |
| 7 | |
| 8 | |
| 9 | /** |
| 10 | * Vehicle for get files combined attributes. |
| 11 | * |
| 12 | * @since 1.9.4 |
| 13 | */ |
| 14 | public class PnfsGetFileAttributes extends PnfsMessage { |
| 15 | |
| 16 | private static final long serialVersionUID = -6750531802534981651L; |
| 17 | |
| 18 | protected FileAttributes _fileAttributes; |
| 19 | protected Set<FileAttribute> _attributes; |
| 20 | |
| 21 | /** |
| 22 | * Construct request by PnfsId. |
| 23 | * |
| 24 | * @param pnfsid |
| 25 | * @param attr |
| 26 | */ |
| 27 | public PnfsGetFileAttributes(PnfsId pnfsid, Set<FileAttribute> attr) { |
| 28 | super(pnfsid); |
| 29 | _attributes = attr; |
| 30 | } |
| 31 | |
| 32 | /** |
| 33 | * Construct request by path. |
| 34 | * |
| 35 | * @param path |
| 36 | * @param attr |
| 37 | */ |
| 38 | public PnfsGetFileAttributes(String path, Set<FileAttribute> attr) { |
| 39 | super(); |
| 40 | setPnfsPath(path); |
| 41 | _attributes = attr; |
| 42 | } |
| 43 | |
| 44 | /** |
| 45 | * Set file attributes. |
| 46 | * |
| 47 | * @param fileAttributes |
| 48 | */ |
| 49 | public void setFileAttributes(FileAttributes fileAttributes) { |
| 50 | _fileAttributes = fileAttributes; |
| 51 | } |
| 52 | |
| 53 | /** |
| 54 | * Get requested attributes. Note that PnfsManager may return less attributes than requested. |
| 55 | * |
| 56 | * @return |
| 57 | */ |
| 58 | public FileAttributes getFileAttributes() { |
| 59 | return _fileAttributes; |
| 60 | } |
| 61 | |
| 62 | /** |
| 63 | * Get set of requested {@link FileAttributes}. An empty set |
| 64 | * indicates that client interested in file existence only. |
| 65 | * @return |
| 66 | */ |
| 67 | public Set<FileAttribute> getRequestedAttributes() { |
| 68 | return _attributes; |
| 69 | } |
| 70 | |
| 71 | @Override |
| 72 | public boolean invalidates(Message message) |
| 73 | { |
| 74 | return false; |
| 75 | } |
| 76 | |
| 77 | @Override |
| 78 | public boolean fold(Message message) |
| 79 | { |
| 80 | if (message instanceof PnfsGetFileAttributes) { |
| 81 | PnfsId pnfsId = getPnfsId(); |
| 82 | String path = getPnfsPath(); |
| 83 | Set<FileAttribute> requested = getRequestedAttributes(); |
| 84 | PnfsGetFileAttributes other = |
| 85 | (PnfsGetFileAttributes) message; |
| 86 | if ((pnfsId == null || pnfsId.equals(other.getPnfsId())) && |
| 87 | (path == null || path.equals(other.getPnfsPath())) && |
| 88 | (getSubject().equals(other.getSubject())) && |
| 89 | (other.getRequestedAttributes().containsAll(requested))) { |
| 90 | setPnfsId(other.getPnfsId()); |
| 91 | setPnfsPath(other.getPnfsPath()); |
| 92 | setFileAttributes(other.getFileAttributes()); |
| 93 | return true; |
| 94 | } |
| 95 | } |
| 96 | |
| 97 | return false; |
| 98 | } |
| 99 | |
| 100 | @Override |
| 101 | public String toString() |
| 102 | { |
| 103 | return super.toString() + ";" + |
| 104 | ((_fileAttributes == null) |
| 105 | ? "[noMetaData]" |
| 106 | : _fileAttributes.toString()); |
| 107 | } |
| 108 | } |