/*
* Copyright 2013 cruxframework.org.
*
* 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.
*/
package org.cruxframework.crux.core.server.rest.state;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.cruxframework.crux.core.config.ConfigurationFactory;
/**
* @author Thiago da Rosa de Bustamante
*
*/
public class ResourceStateConfig
{
private static final Log logger = LogFactory.getLog(ResourceStateConfig.class);
private static final Lock handlerLock = new ReentrantLock();
private static final Lock enabledLock = new ReentrantLock();
private static ResourceStateHandler resourceStateHandler = null;
private static Boolean enabled;
public static boolean isResourceStateCacheEnabled()
{
if (enabled == null)
{
enabledLock.lock();
try
{
if (enabled == null)
{
enabled = Boolean.parseBoolean(ConfigurationFactory.getConfigurations().enableResourceStateCacheForRestServices());
}
}
finally
{
enabledLock.unlock();
}
}
return enabled;
}
public static ResourceStateHandler getResourceStateHandler()
{
if (resourceStateHandler != null) return resourceStateHandler;
try
{
handlerLock.lock();
if (resourceStateHandler != null) return resourceStateHandler;
resourceStateHandler = (ResourceStateHandler) Class.forName(ConfigurationFactory.getConfigurations().restServiceResourceStateHandler()).newInstance();
}
catch (Exception e)
{
logger.error("Error initializing resourceStateHandler.", e);
}
finally
{
handlerLock.unlock();
}
return resourceStateHandler;
}
}