1 files changed, 82 insertions, 0 deletions
diff --git a/asdc-controller/src/main/java/org/openecomp/mso/asdc/ASDCControllerSingleton.java b/asdc-controller/src/main/java/org/openecomp/mso/asdc/ASDCControllerSingleton.java
new file mode 100644
index 0000000000..d8ac7d6491
--- /dev/null
+++ b/asdc-controller/src/main/java/org/openecomp/mso/asdc/ASDCControllerSingleton.java
@@ -0,0 +1,82 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * OPENECOMP - MSO
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. 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.openecomp.mso.asdc;
+
+
+import javax.annotation.PreDestroy;
+import javax.ejb.ConcurrencyManagement;
+import javax.ejb.ConcurrencyManagementType;
+import javax.ejb.Lock;
+import javax.ejb.LockType;
+import javax.ejb.Schedule;
+import javax.ejb.Singleton;
+import javax.ejb.Startup;
+
+import org.openecomp.mso.asdc.client.ASDCGlobalController;
+import org.openecomp.mso.logger.MsoLogger;
+
+@Singleton(name = "ASDCController")
+@Lock(LockType.READ)
+@Startup
+@ConcurrencyManagement(ConcurrencyManagementType.CONTAINER)
+public class ASDCControllerSingleton {
+
+    private static final MsoLogger LOGGER = MsoLogger.getMsoLogger (MsoLogger.Catalog.ASDC);
+    private static boolean working = false;
+
+    private ASDCGlobalController globalController = new ASDCGlobalController ();
+
+    /**
+     * Main Constructor of the ASDC Singleton
+     */
+    public ASDCControllerSingleton () {
+    }
+
+    @Schedule(second ="30", minute = "*", hour = "*", persistent = false)
+    public void periodicControllerTask () {
+        if (isWorking ()) {
+            LOGGER.debug ("Another thread is already trying to init ASDC, cancel this periodic call");
+            return;
+        }
+        try {
+            setWorking (true);
+            
+            globalController.updateControllersConfigIfNeeded();
+            globalController.checkInStoppedState();
+
+        } finally {
+            setWorking (false);
+        }
+    }
+
+    @PreDestroy
+    private void terminate () {
+        globalController.closeASDC ();
+    }
+
+    private static synchronized boolean isWorking () {
+        return ASDCControllerSingleton.working;
+    }
+
+    private static synchronized void setWorking (boolean working) {
+        ASDCControllerSingleton.working = working;
+    }
+}