List of usage examples for java.nio.file StandardWatchEventKinds ENTRY_CREATE
WatchEvent.Kind ENTRY_CREATE
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From source file:io.gravitee.gateway.services.localregistry.LocalApiDefinitionRegistry.java
@Override protected void doStart() throws Exception { if (enabled) { super.doStart(); this.init(); executor = Executors.newSingleThreadExecutor(r -> new Thread(r, "registry-monitor")); executor.execute(() -> {/* ww w . ja va2 s . c o m*/ Path registry = Paths.get(registryPath); LOGGER.info("Start local registry monitor for directory {}", registry); try { WatchService watcher = registry.getFileSystem().newWatchService(); registry.register(watcher, StandardWatchEventKinds.ENTRY_CREATE, StandardWatchEventKinds.ENTRY_DELETE, StandardWatchEventKinds.ENTRY_MODIFY); while (true) { WatchKey key; try { key = watcher.take(); } catch (InterruptedException ex) { return; } for (WatchEvent<?> event : key.pollEvents()) { WatchEvent.Kind<?> kind = event.kind(); @SuppressWarnings("unchecked") WatchEvent<Path> ev = (WatchEvent<Path>) event; Path fileName = registry.resolve(ev.context().getFileName()); LOGGER.info("An event occurs for file {}: {}", fileName, kind.name()); if (kind == StandardWatchEventKinds.ENTRY_MODIFY) { Api loadedDefinition = loadDefinition(fileName.toFile()); Api existingDefinition = definitions.get(fileName); if (existingDefinition != null) { if (apiManager.get(existingDefinition.getId()) != null) { apiManager.update(loadedDefinition); } else { apiManager.undeploy(existingDefinition.getId()); definitions.remove(fileName); apiManager.deploy(loadedDefinition); definitions.put(fileName, loadedDefinition); } } } else if (kind == StandardWatchEventKinds.ENTRY_CREATE) { Api loadedDefinition = loadDefinition(fileName.toFile()); Api existingDefinition = apiManager.get(loadedDefinition.getId()); if (existingDefinition != null) { apiManager.update(loadedDefinition); } else { apiManager.deploy(loadedDefinition); definitions.put(fileName, loadedDefinition); } } else if (kind == StandardWatchEventKinds.ENTRY_DELETE) { Api existingDefinition = definitions.get(fileName); if (existingDefinition != null && apiManager.get(existingDefinition.getId()) != null) { apiManager.undeploy(existingDefinition.getId()); definitions.remove(fileName); } } boolean valid = key.reset(); if (!valid) { break; } } } } catch (IOException ioe) { LOGGER.error("Unexpected error while looking for PI definitions from filesystem", ioe); } }); } }
From source file:com.lukakama.serviio.watchservice.watcher.WatcherRunnable.java
@Override public void run() { try {/*from ww w. j av a 2s .co m*/ log.info("Watcher started."); initialize(); while (true) { checkInterrupted(); WatchKey watchKey = watcher.poll(CHECK_TIMEOUT, TimeUnit.MILLISECONDS); if (watchKey != null) { try { log.debug("Received watchKey: {} - {}", watchKey, watchKey.watchable()); Path parentPath = (Path) watchKey.watchable(); for (WatchEvent<?> event : watchKey.pollEvents()) { checkInterrupted(); log.debug("Received event: {} - {}", event.kind(), event.context()); if (event.kind() == StandardWatchEventKinds.OVERFLOW) { log.warn("Performing a full scan due loss of native FileSystem tracking data."); // Canceling the old watcher. IOUtils.closeQuietly(watcher); // Clean any pending unaccessible path. unaccessiblePaths.clear(); creatingPaths.clear(); modifyingPaths.clear(); // Re-initialize the monitoring. initialize(); } else { Path eventPath = parentPath.resolve((Path) event.context()); if (event.kind() == StandardWatchEventKinds.ENTRY_CREATE) { checkNewPath(eventPath); } else if (event.kind() == StandardWatchEventKinds.ENTRY_MODIFY) { if (!unaccessiblePaths.contains(eventPath)) { if (isPathFullyAccessible(eventPath)) { handlePathChanged(eventPath); } else { unaccessiblePaths.add(eventPath); modifyingPaths.add(eventPath); log.debug( "File unacessible upon modification. Starting monitoring for '{}'.", eventPath); } } } else if (event.kind() == StandardWatchEventKinds.ENTRY_DELETE) { if (unaccessiblePaths.contains(eventPath)) { unaccessiblePaths.remove(eventPath); log.debug("Monitored file removed. Canceling monitoring for '{}'.", eventPath); if (modifyingPaths.contains(eventPath)) { modifyingPaths.remove(eventPath); handlePathRemoved(eventPath); } else { creatingPaths.remove(eventPath); } } else { handlePathRemoved(eventPath); } } } } } finally { watchKey.reset(); } } if (!unaccessiblePaths.isEmpty()) { checkAccessiblePaths(); } else if ((updateNotificationTimestamp != -1) && ((System.currentTimeMillis() - updateNotificationTimestamp) > CHECK_TIMEOUT)) { // Nothing happened since last update. Resetting the updateTimestamp and requesting a library update on // Serviio. updateNotificationTimestamp = -1; updateServiioReposotories(); } else if (updateNotificationTimestamp == -1) { // No pending path to checks and no pending updates to notify. Check external configuration changes. Object newFlagValue = getFieldValue(LibraryManager.getInstance(), "libraryAdditionsCheckerThread"); if ((configChangeFlag != null) && (newFlagValue != configChangeFlag)) { log.info("Detected configuration change. Restart monitoring."); configChangeFlag = newFlagValue; // Canceling the old watcher. IOUtils.closeQuietly(watcher); // Clean any pending unaccessible path. unaccessiblePaths.clear(); creatingPaths.clear(); modifyingPaths.clear(); // Re-initialize the monitoring. initialize(); } } } } catch (InterruptedException e) { // This thread has been interrupted. Just exit. return; } finally { // Release any bounded resource. unaccessiblePaths.clear(); creatingPaths.clear(); modifyingPaths.clear(); IOUtils.closeQuietly(watcher); log.info("Watcher stopped."); } }
From source file:com.aspc.cms.module.SyncResourceApp.java
private void registerDir(final WatchService watchService, final File dir) throws Exception { // Folder we are going to watch Path p = dir.toPath();/*from w w w . ja v a 2 s . co m*/ p.register(watchService, StandardWatchEventKinds.ENTRY_CREATE, StandardWatchEventKinds.ENTRY_MODIFY, StandardWatchEventKinds.ENTRY_DELETE); for (File f : dir.listFiles()) { if (f.isDirectory()) { registerDir(watchService, f); } } }
From source file:org.springframework.integration.file.WatchServiceDirectoryScanner.java
private Set<File> filesFromEvents() { WatchKey key = watcher.poll(); Set<File> files = new LinkedHashSet<File>(); while (key != null) { for (WatchEvent<?> event : key.pollEvents()) { if (event.kind() == StandardWatchEventKinds.ENTRY_CREATE) { Path item = (Path) event.context(); File file = new File( ((Path) key.watchable()).toAbsolutePath() + File.separator + item.getFileName()); if (logger.isDebugEnabled()) { logger.debug("Watch Event: " + event.kind() + ": " + file); }//w w w .j av a2 s .c o m if (file.isDirectory()) { files.addAll(walkDirectory(file.toPath())); } else { files.add(file); } } else if (event.kind() == StandardWatchEventKinds.OVERFLOW) { if (logger.isDebugEnabled()) { logger.debug("Watch Event: " + event.kind() + ": context: " + event.context()); } if (event.context() != null && event.context() instanceof Path) { files.addAll(walkDirectory((Path) event.context())); } else { files.addAll(walkDirectory(this.directory)); } } else { if (logger.isDebugEnabled()) { logger.debug("Watch Event: " + event.kind() + ": context: " + event.context()); } } } key.reset(); key = watcher.poll(); } return files; }
From source file:com.reactive.hzdfs.dll.JarModuleLoader.java
private Set<File> filesFromEvents() throws InterruptedException { WatchKey key = watcher.take(); Set<File> files = new LinkedHashSet<File>(); if (key != null && key.isValid()) { for (WatchEvent<?> event : key.pollEvents()) { if (event.kind() == StandardWatchEventKinds.ENTRY_CREATE || event.kind() == StandardWatchEventKinds.ENTRY_MODIFY) { Path item = (Path) event.context(); File file = new File( ((Path) key.watchable()).toAbsolutePath() + File.separator + item.getFileName()); if (log.isDebugEnabled()) { log.debug("Watch Event: " + event.kind() + ": " + file); }/*from w ww . j a v a 2s .c om*/ if (isJarFile(file)) { files.add(file); } else log.warn("[JAR Loader] Ignoring file:- " + file); } } key.reset(); } return files; }
From source file:request.processing.ServletLoader.java
/** * Watch dir monitors the current directory for any new files and calls * loadJar on them./*from ww w . ja v a2 s . co m*/ */ public static void watchDir() { WatchService watcher = null; try { watcher = FileSystems.getDefault().newWatchService(); WatchKey key = servletDir.register(watcher, StandardWatchEventKinds.ENTRY_CREATE); servletDir.register(watcher, StandardWatchEventKinds.ENTRY_MODIFY); } catch (IOException x) { System.err.println(x); } while (true) { WatchKey key = null; try { key = watcher.take(); } catch (InterruptedException x) { System.err.println("Interrupted Exception"); x.printStackTrace(); } for (WatchEvent<?> event : key.pollEvents()) { WatchEvent.Kind<?> kind = event.kind(); if (kind == StandardWatchEventKinds.OVERFLOW) { continue; } try { System.out.println("Directory Changed!"); Thread.sleep(1000); loadServletsAndConfig(); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } boolean valid = key.reset(); if (!valid) { break; } } } }
From source file:com.reactivetechnologies.platform.rest.dll.JarModuleLoader.java
private Set<File> filesFromEvents() throws InterruptedException { WatchKey key = watcher.take(); Set<File> files = new LinkedHashSet<File>(); if (key != null && key.isValid()) { for (WatchEvent<?> event : key.pollEvents()) { if (event.kind() == StandardWatchEventKinds.ENTRY_CREATE || event.kind() == StandardWatchEventKinds.ENTRY_MODIFY) { Path item = (Path) event.context(); File file = new File( ((Path) key.watchable()).toAbsolutePath() + File.separator + item.getFileName()); if (log.isDebugEnabled()) { log.debug("Watch Event: " + event.kind() + ": " + file); }// w ww . j a va 2 s . c o m if (isJarFile(file)) { files.add(file); } else log.warn("[JAR Loader] Ignoring file " + file); } } key.reset(); } return files; }
From source file:org.springframework.cloud.config.monitor.FileMonitorConfiguration.java
private Set<File> filesFromEvents() { Set<File> files = new LinkedHashSet<File>(); if (this.watcher == null) { return files; }//from w w w . j a v a 2 s .c om WatchKey key = this.watcher.poll(); while (key != null) { for (WatchEvent<?> event : key.pollEvents()) { if (event.kind() == StandardWatchEventKinds.ENTRY_CREATE || event.kind() == StandardWatchEventKinds.ENTRY_MODIFY) { Path item = (Path) event.context(); File file = new File( ((Path) key.watchable()).toAbsolutePath() + File.separator + item.getFileName()); if (file.isDirectory()) { files.addAll(walkDirectory(file.toPath())); } else { if (!file.getPath().contains(".git") && !PatternMatchUtils.simpleMatch(this.excludes, file.getName())) { if (log.isDebugEnabled()) { log.debug("Watch Event: " + event.kind() + ": " + file); } files.add(file); } } } else if (event.kind() == StandardWatchEventKinds.OVERFLOW) { if (log.isDebugEnabled()) { log.debug("Watch Event: " + event.kind() + ": context: " + event.context()); } if (event.context() != null && event.context() instanceof Path) { files.addAll(walkDirectory((Path) event.context())); } else { for (Path path : this.directory) { files.addAll(walkDirectory(path)); } } } else { if (log.isDebugEnabled()) { log.debug("Watch Event: " + event.kind() + ": context: " + event.context()); } } } key.reset(); key = this.watcher.poll(); } return files; }
From source file:ddf.camel.component.catalog.content.ContentProducerDataAccessObjectTest.java
@Test public void testGetEventType() throws Exception { File testFile = temporaryFolder.newFile("testEventType"); GenericFileMessage<File> mockMessage = getMockMessage(testFile); // test that a new standard kind is created if storeRefKey == false assertThat(contentProducerDataAccessObject.getEventType(false, mockMessage) .equals(StandardWatchEventKinds.ENTRY_CREATE), is(true)); // test that the sample kind is returned when storeRefKey == true assertThat(contentProducerDataAccessObject.getEventType(true, mockMessage).name().equals("example"), is(true));/*from ww w . jav a 2 s . com*/ }
From source file:org.springframework.integration.file.WatchServiceDirectoryScanner.java
private void registerWatch(Path dir) throws IOException { if (logger.isDebugEnabled()) { logger.debug("registering: " + dir + " for file creation events"); }/*from ww w. j a va 2 s.c o m*/ dir.register(this.watcher, StandardWatchEventKinds.ENTRY_CREATE); }