/*
* Copyright (c) 2010 Lockheed Martin Corporation
*
* 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.eurekastreams.server.action.execution;
import java.io.Serializable;
import java.util.List;
import org.apache.commons.logging.Log;
import org.eurekastreams.commons.actions.TaskHandlerExecutionStrategy;
import org.eurekastreams.commons.actions.context.ActionContext;
import org.eurekastreams.commons.actions.context.TaskHandlerActionContext;
import org.eurekastreams.commons.logging.LogFactory;
import org.eurekastreams.commons.server.UserActionRequest;
import org.eurekastreams.server.persistence.mappers.cache.Cache;
/**
* This action initialized/warms the cache by running a series of cache loaders. This action is meant to be run
* asynchronously at application startup.
*/
public class InitializeCacheExecution implements TaskHandlerExecutionStrategy<ActionContext>
{
/**
* The logger.
*/
private Log log = LogFactory.make();
/**
* The cache.
*/
private Cache cache;
/**
* Action key.
*/
private List<String> actionKeys = null;
/**
* Constructor. Set cache to null to skip clearing cache before warming.
*
* @param inCache
* Cache client, leave null to skip clearing cache before warming.
* @param inActionKeys
* Action keys.
*/
public InitializeCacheExecution(final Cache inCache, final List<String> inActionKeys)
{
cache = inCache;
actionKeys = inActionKeys;
}
/**
* Clear cache (if not null) and queue list of cache warming actions.
*
* @param inActionContext
* {@link TaskHandlerActionContext}.
* @return null.
*/
@Override
public Serializable execute(final TaskHandlerActionContext<ActionContext> inActionContext)
{
if (cache != null)
{
log.info("Clearing Cache");
cache.clear();
}
else
{
log.info("Skipping Cache clearing");
}
for (String key : actionKeys)
{
if (key != null && !key.isEmpty())
{
log.info("Queueing up action: " + key);
inActionContext.getUserActionRequests().add(new UserActionRequest(key, null, null));
}
}
return null;
}
}