--- /dev/null
+/*
+ * Copyright (c) 2018 Orange and/or its affiliates.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package io.fd.honeycomb.transportpce.device.test;
+
+import static java.nio.file.StandardWatchEventKinds.ENTRY_CREATE;
+import static java.nio.file.StandardWatchEventKinds.ENTRY_DELETE;
+import static java.nio.file.StandardWatchEventKinds.ENTRY_MODIFY;
+
+import java.io.File;
+import java.io.IOException;
+import java.nio.file.FileSystems;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.nio.file.WatchEvent;
+import java.nio.file.WatchKey;
+import java.nio.file.WatchService;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * @author Martial COULIBALY ( mcoulibaly.ext@orange.com ) on behalf of Orange
+ */
+public class DirectoryWatchTest {
+ private static final Logger LOG = LoggerFactory.getLogger(DirectoryWatchTest.class);
+ private static final String DATA_JSON = "/var/lib/honeycomb/persist/config/data.json";
+
+ public static void main(String[] args) {
+ File data = new File(DATA_JSON);
+ String parent = data.getParent();
+ LOG.info("data.json directory : {}",parent);
+ try {
+ WatchService watcher = FileSystems.getDefault().newWatchService();
+ Path dir = Paths.get(data.getParent());
+ dir.register(watcher, ENTRY_CREATE, ENTRY_DELETE, ENTRY_MODIFY);
+ LOG.info("Watch Service registered for dir: {}", dir.getFileName());
+ 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 = ev.context();
+ if (kind == ENTRY_MODIFY && fileName.toString().equals("data.json")) {
+ LOG.info("My source file has changed ...");
+ /**
+ * merge honeycomb-config datastore to device oper
+ */
+ }
+ }
+ boolean valid = key.reset();
+ if (!valid) {
+ LOG.error("Key has been unregisterede");
+ break;
+ }
+ }
+ } catch (IOException ex) {
+ LOG.error("WatchService Error",ex);
+ }
+ }
+
+}