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/*-
* ============LICENSE_START=======================================================
* ONAP - SO
* ================================================================================
* 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;
}
}
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