/**
* GRANITE DATA SERVICES
* Copyright (C) 2006-2015 GRANITE DATA SERVICES S.A.S.
*
* This file is part of the Granite Data Services Platform.
*
* Granite Data Services is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* Granite Data Services is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
* General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA, or see <http://www.gnu.org/licenses/>.
*/
package org.granite.messaging.service;
import java.util.Map;
import java.util.concurrent.locks.ReentrantLock;
import org.granite.config.flex.Destination;
import org.granite.config.flex.Factory;
import org.granite.config.flex.ServicesConfig;
import org.granite.context.GraniteContext;
import org.granite.logging.Logger;
import org.granite.util.TypeUtil;
import org.granite.util.XMap;
import flex.messaging.messages.RemotingMessage;
/**
* @author Franck WOLFF
*/
public abstract class ServiceFactory {
private static final Logger log = Logger.getLogger(ServiceFactory.class);
private static final ReentrantLock lock = new ReentrantLock();
private ServiceExceptionHandler serviceExceptionHandler;
public static ServiceFactory getFactoryInstance(RemotingMessage request) throws ServiceException {
GraniteContext context = GraniteContext.getCurrentInstance();
String messageType = request.getClass().getName();
String destinationId = request.getDestination();
log.debug(">> Finding factoryId for messageType: %s and destinationId: %s", messageType, destinationId);
Destination destination = ((ServicesConfig)context.getServicesConfig()).findDestinationById(messageType, destinationId);
if (destination == null)
throw new ServiceException("Destination not found: " + destinationId);
String factoryId = destination.getProperties().get("factory");
log.debug(">> Found factoryId: %s", factoryId);
Map<String, Object> cache = context.getApplicationMap();
String key = ServiceFactory.class.getName() + '.' + factoryId;
return getServiceFactory(cache, context, factoryId, key);
}
private static ServiceFactory getServiceFactory(Map<String, Object> cache, GraniteContext context, String factoryId, String key) {
lock.lock();
try {
ServiceFactory factory = (ServiceFactory)cache.get(key);
if (factory == null) {
log.debug(">> No cached factory for: %s", factoryId);
Factory config = ((ServicesConfig)context.getServicesConfig()).findFactoryById(factoryId);
if (config == null)
config = getDefaultFactoryConfig();
try {
Class<? extends ServiceFactory> clazz = TypeUtil.forName(config.getClassName(), ServiceFactory.class);
factory = clazz.newInstance();
factory.configure(config.getProperties());
}
catch (Exception e) {
throw new ServiceException("Could not instantiate factory: " + factoryId + " of type " + config.getClassName(), e);
}
cache.put(key, factory);
}
else
log.debug(">> Found a cached factory for: %s", factoryId);
log.debug("<< Returning factory: %s", factory);
return factory;
} finally {
lock.unlock();
}
}
private static Factory getDefaultFactoryConfig() {
return Factory.DEFAULT_FACTORY;
}
public void configure(XMap properties) throws ServiceException {
log.debug(">> Configuring factory with: %s", properties);
// service exception handler
String sServiceExceptionHandler = properties.get("service-exception-handler");
String enableLogging = properties.get("enable-exception-logging");
if (sServiceExceptionHandler != null) {
try {
if (Boolean.TRUE.toString().equals(enableLogging) || Boolean.FALSE.toString().equals(enableLogging))
this.serviceExceptionHandler = (ServiceExceptionHandler)TypeUtil.newInstance(sServiceExceptionHandler.trim(),
new Class<?>[] { boolean.class }, new Object[] { Boolean.valueOf(enableLogging) });
else
this.serviceExceptionHandler = (ServiceExceptionHandler)TypeUtil.newInstance(sServiceExceptionHandler.trim());
}
catch (Exception e) {
throw new ServiceException("Could not instantiate service exception handler: " + sServiceExceptionHandler, e);
}
}
else {
if (Boolean.TRUE.toString().equals(enableLogging) || Boolean.FALSE.toString().equals(enableLogging))
this.serviceExceptionHandler = new DefaultServiceExceptionHandler(Boolean.valueOf(enableLogging));
else
this.serviceExceptionHandler = new DefaultServiceExceptionHandler();
}
log.debug("<< Configuring factory done: %s", this);
}
public abstract ServiceInvoker<?> getServiceInstance(RemotingMessage request) throws ServiceException;
public ServiceExceptionHandler getServiceExceptionHandler() {
return serviceExceptionHandler;
}
@Override
public String toString() {
return toString(null);
}
public String toString(String append) {
return super.toString() + " {" +
(append != null ? append : "") +
"\n serviceExceptionHandler: " + serviceExceptionHandler +
"\n}";
}
}