net.anotheria.anosite.action.servlet.cms.ActionFactory Maven / Gradle / Ivy
package net.anotheria.anosite.action.servlet.cms;
import net.anotheria.anoprise.metafactory.MetaFactory;
import net.anotheria.anoprise.metafactory.MetaFactoryException;
import net.anotheria.anosite.action.Action;
import net.anotheria.anosite.action.ActionProducer;
import net.anotheria.anosite.action.ActionWrapper;
import net.anotheria.anosite.gen.asaction.data.ActionDef;
import net.anotheria.anosite.gen.asaction.service.IASActionService;
import net.anotheria.anosite.gen.ascustomaction.data.ActionMappingDef;
import net.anotheria.util.concurrency.IdBasedLock;
import net.anotheria.util.concurrency.IdBasedLockManager;
import net.anotheria.util.concurrency.SafeIdBasedLockManager;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.slf4j.MarkerFactory;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
/**
* Utility for Action creation.
*/
public class ActionFactory {
/**
* {@link Logger} instance.
*/
private static Logger LOGGER = LoggerFactory.getLogger(ActionFactory.class);
/**
* {@link IASActionService} CMS service instance.
*/
private static IASActionService service;
/**
* Local storage for ActionProducer.
*/
private static Map producers = new ConcurrentHashMap();
/**
* {@link IdBasedLockManager} instance.
*/
private static final IdBasedLockManager lockManager = new SafeIdBasedLockManager();
/**
* Init.
*/
static {
try {
service = MetaFactory.get(IASActionService.class);
} catch (MetaFactoryException e) {
LOGGER.error(MarkerFactory.getMarker("FATAL"), "IASActionService init failure", e);
}
}
/**
* Creates and return required Action.
*
* @param def {@link ActionMappingDef} default mapping from cms
* @return {@link Action} as result
*/
public static Action createAction(ActionMappingDef def) {
String actionId = def.getAction();
try {
ActionDef ad = service.getActionDef(actionId);
String clazz = ad.getClazz();
// Action - moskito producer lookUp
String producerId = clazz + "-" + ad.getId();
ActionProducer producer = producers.get(producerId);
if (producer == null) {
IdBasedLock lock = lockManager.obtainLock(producerId);
try {
lock.lock();
producer = new ActionProducer(producerId);
producers.put(producerId, producer);
} finally {
lock.unlock();
}
}
return new ActionWrapper((Action) Class.forName(clazz).newInstance(), producer);
} catch (Exception e) {
LOGGER.error("createAction(" + def + ")", e);
}
return null;
}
}