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/**
* ============LICENSE_START=======================================================
* org.onap.aai
* ================================================================================
* Copyright © 2017-2018 AT&T Intellectual Property. All rights reserved.
* Copyright © 2017-2018 Amdocs
* ================================================================================
* 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.aai.sparky.sync;
import java.lang.Thread.UncaughtExceptionHandler;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.TimeUnit;
import org.onap.aai.cl.api.Logger;
import org.onap.aai.cl.eelf.LoggerFactory;
import org.onap.aai.sparky.logging.AaiUiMsgs;
import org.onap.aai.sparky.sync.SyncControllerImpl.SyncActions;
import org.onap.aai.sparky.sync.enumeration.OperationState;
import org.onap.aai.sparky.sync.enumeration.SynchronizerState;
import org.springframework.context.ApplicationListener;
import org.springframework.context.event.ApplicationContextEvent;
import com.google.common.util.concurrent.ThreadFactoryBuilder;
public class SyncControllerService implements ApplicationListener<ApplicationContextEvent> {
private SyncControllerRegistry syncControllerRegistry;
private ExecutorService runonceSyncExecutor;
private ScheduledExecutorService periodicSyncExecutor;
private boolean syncStarted;
private static final Logger LOG =
LoggerFactory.getInstance().getLogger(SyncControllerService.class);
private class SyncControllerTask implements Runnable {
private SyncController controller;
public SyncControllerTask(SyncController controller) {
this.controller = controller;
}
@Override
public void run() {
try {
if (controller.getState() == SynchronizerState.IDLE) {
/*
* This is a blocking-call, but would be nicer if it was async internally within the
* controller but at the moment, that's not the way it works.
*/
if (controller.performAction(SyncActions.SYNCHRONIZE) != OperationState.OK) {
LOG.info(AaiUiMsgs.INFO_GENERIC,
controller.getControllerName() + " is not idle, sync attempt has been skipped.");
}
} else {
LOG.info(AaiUiMsgs.INFO_GENERIC,
controller.getControllerName() + " is not idle, sync attempt has been skipped.");
}
} catch (Exception exception) {
LOG.error(AaiUiMsgs.ERROR_GENERIC,
"Error while attempting synchronization. Error = " + exception.getMessage());
}
}
}
public SyncControllerService(SyncControllerRegistry syncControllerRegistry, int numRunOnceWorkers,
int numPeriodicWorkers) {
this.syncControllerRegistry = syncControllerRegistry;
this.syncStarted = false;
UncaughtExceptionHandler uncaughtExceptionHandler = new Thread.UncaughtExceptionHandler() {
@Override
public void uncaughtException(Thread thread, Throwable exc) {
LOG.error(AaiUiMsgs.ERROR_GENERIC, thread.getName() + ": " + exc);
}
};
runonceSyncExecutor = Executors.newFixedThreadPool(numRunOnceWorkers,
new ThreadFactoryBuilder().setNameFormat("RunonceSyncWorker-%d")
.setUncaughtExceptionHandler(uncaughtExceptionHandler).build());
periodicSyncExecutor = Executors.newScheduledThreadPool(numPeriodicWorkers,
new ThreadFactoryBuilder().setNameFormat("PeriodicSyncWorker-%d")
.setUncaughtExceptionHandler(uncaughtExceptionHandler).build());
}
public SyncControllerRegistry getSyncControllerRegistry() {
return syncControllerRegistry;
}
public void startSync() {
long syncInitialDelayInMs = 0;
for (SyncController controller : syncControllerRegistry.getControllers()) {
syncInitialDelayInMs = controller.getDelayInMs();
if (!controller.isPeriodicSyncEnabled()) {
if (controller.isRunOnceSyncEnabled()) {
LOG.info(AaiUiMsgs.INFO_GENERIC, controller.getControllerName() + " is enabled.");
runonceSyncExecutor.submit(new SyncControllerTask(controller));
} else {
LOG.info(AaiUiMsgs.INFO_GENERIC, controller.getControllerName() + " is disabled.");
}
} else {
/**
* Do both. We'll take one instance of the SyncController and wrap the object instance into
* two SyncControllerTasks. The responsibility for preventing a conflicting sync should live
* in the SyncController instance. If a sync is underway when the periodic sync kicks in,
* then it will be ignored by the SyncController which is already underway.
*
* The SyncController instance itself would then also be stateful such that it would know
* the last time it ran, and the next time it is supposed to run, the number times a sync
* has executed, etc.
*/
if (controller.isRunOnceSyncEnabled()) {
LOG.info(AaiUiMsgs.INFO_GENERIC,
controller.getControllerName() + " run-once sync is enabled.");
runonceSyncExecutor.submit(new SyncControllerTask(controller));
} else {
LOG.info(AaiUiMsgs.INFO_GENERIC,
controller.getControllerName() + " run-once sync is disabled.");
}
/*
* The controller knows it's configuredfrequency and we can just ask it to tell us what the
* delay and frequency needs to be, rather than trying to calculate the configured frequency
* per controller which "could" be different for each controller.
*/
if (controller.isPeriodicSyncEnabled()) {
LOG.info(AaiUiMsgs.INFO_GENERIC,
controller.getControllerName() + " periodic sync is enabled and scheduled to start @ "
+ controller.getNextSyncTime());
periodicSyncExecutor.scheduleAtFixedRate(new SyncControllerTask(controller),
controller.getDelayInMs(), controller.getSyncFrequencyInMs(), TimeUnit.MILLISECONDS);
} else {
LOG.info(AaiUiMsgs.INFO_GENERIC,
controller.getControllerName() + " periodic sync is disabled.");
}
}
}
}
public void shutdown() {
if (runonceSyncExecutor != null) {
runonceSyncExecutor.shutdown();
}
if (periodicSyncExecutor != null) {
periodicSyncExecutor.shutdown();
}
if (syncControllerRegistry != null) {
for (SyncController controller : syncControllerRegistry.getControllers()) {
controller.shutdown();
}
}
}
@Override
public synchronized void onApplicationEvent(ApplicationContextEvent arg0) {
/*
* Start sync service processing when spring-context-initialization has finished
*/
if (!syncStarted) {
syncStarted = true;
startSync();
}
}
}
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