/** Check that a cancelled key will never be queued */ static void testCancel(Path dir) throws IOException { System.out.println("-- Cancel --"); try (WatchService watcher = FileSystems.getDefault().newWatchService()) { System.out.format("register %s for events\n", dir); WatchKey myKey = dir.register(watcher, new WatchEvent.Kind<?>[] {ENTRY_CREATE}); checkKey(myKey, dir); System.out.println("cancel key"); myKey.cancel(); // create a file in the directory Path file = dir.resolve("mars"); System.out.format("create: %s\n", file); Files.createFile(file); // poll for keys - there will be none System.out.println("poll..."); try { WatchKey key = watcher.poll(3000, TimeUnit.MILLISECONDS); if (key != null) throw new RuntimeException("key should not be queued"); } catch (InterruptedException x) { throw new RuntimeException(x); } // done Files.delete(file); System.out.println("OKAY"); } }
public void downloadFile(String relPath) { VOSync.debug("Downloading file from storage: " + relPath); Path filePath = FileSystems.getDefault().getPath(startDir.toString(), relPath.substring(1)); try { WatchKey key = filePath.getParent().register(watcher, ENTRY_CREATE, ENTRY_DELETE, ENTRY_MODIFY); keys.remove(key); key.cancel(); FileOutputStream outp = new FileOutputStream(filePath.toFile()); DropboxFileInfo info = api.getFile(relPath, null, outp, null); outp.close(); key = filePath.getParent().register(watcher, ENTRY_CREATE, ENTRY_DELETE, ENTRY_MODIFY); keys.put(key, filePath.getParent()); MetaHandler.setFile(relPath, filePath.toFile(), info.getMetadata().rev); } catch (IOException ex) { logger.error("Error downloading file " + relPath + ": " + ex.getMessage()); } catch (DropboxException ex) { ex.printStackTrace(); logger.error("Error downloading file " + relPath + ": " + ex.getMessage()); } }