1 files changed, 81 insertions, 0 deletions
diff --git a/src/main/java/org/onap/pnfsimulator/filesystem/WatcherThread.java b/src/main/java/org/onap/pnfsimulator/filesystem/WatcherThread.java
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+++ b/src/main/java/org/onap/pnfsimulator/filesystem/WatcherThread.java
@@ -0,0 +1,81 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * Simulator
+ * ================================================================================
+ * Copyright (C) 2019 Nokia. All rights reserved.
+ * ================================================================================
+ * 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.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.pnfsimulator.filesystem;
+
+import java.io.IOException;
+import java.nio.file.FileSystems;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.nio.file.StandardWatchEventKinds;
+import java.nio.file.WatchEvent;
+import java.nio.file.WatchKey;
+import java.nio.file.WatchService;
+import lombok.extern.slf4j.Slf4j;
+import org.onap.pnfsimulator.db.Storage;
+import org.onap.pnfsimulator.template.Template;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.stereotype.Component;
+
+@Slf4j
+@Component
+public class WatcherThread implements Runnable {
+
+    private final WatchService watchService;
+    private final Storage<Template> storage;
+    private final Path templatesDir;
+
+    WatcherThread(String templatesDir, WatchService watchService, Storage<Template> storage) throws IOException {
+        this.watchService = watchService;
+        this.storage = storage;
+        this.templatesDir = Paths.get(templatesDir);
+        registerDirectory(this.templatesDir);
+    }
+
+    @Autowired
+    public WatcherThread(@Value("${templates.dir}") String templatesDir, Storage<Template> storage) throws IOException {
+        this(templatesDir, FileSystems.getDefault().newWatchService(), storage);
+    }
+
+    private void registerDirectory(Path path) throws IOException {
+        path.register(watchService, StandardWatchEventKinds.ENTRY_CREATE, StandardWatchEventKinds.ENTRY_DELETE,
+            StandardWatchEventKinds.ENTRY_MODIFY);
+    }
+
+    @Override
+    public void run() {
+        while (true) {
+            WatchKey key;
+            try {
+                key = watchService.take();
+                for (WatchEvent<?> event : key.pollEvents()) {
+                    WatcherEventProcessor.process(event, storage, templatesDir);
+                }
+                key.reset();
+            } catch (InterruptedException e) {
+                log.error("Watch service interrupted.", e.getMessage());
+                Thread.currentThread().interrupt();
+                return;
+            }
+
+        }
+    }
+}