/*
* JBoss, Home of Professional Open Source
* Copyright 2009 Red Hat Inc. and/or its affiliates and other
* contributors as indicated by the @author tags. All rights reserved.
* See the copyright.txt in the distribution for a full listing of
* individual contributors.
*
* This 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.
*
* This software 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 software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.infinispan.interceptors;
import org.infinispan.commands.write.EvictCommand;
import org.infinispan.container.DataContainer;
import org.infinispan.context.InvocationContext;
import org.infinispan.eviction.PassivationManager;
import org.infinispan.factories.annotations.Inject;
import org.infinispan.interceptors.base.JmxStatsCommandInterceptor;
import org.infinispan.jmx.annotations.MBean;
import org.infinispan.jmx.annotations.ManagedAttribute;
import org.infinispan.jmx.annotations.ManagedOperation;
import org.infinispan.util.logging.Log;
import org.infinispan.util.logging.LogFactory;
import org.rhq.helpers.pluginAnnotations.agent.MeasurementType;
import org.rhq.helpers.pluginAnnotations.agent.Metric;
import org.rhq.helpers.pluginAnnotations.agent.Operation;
/**
* Writes evicted entries back to the store on the way in through the CacheStore
*
* @since 4.0
*/
@MBean(objectName = "Passivation", description = "Component that handles passivating entries to a CacheStore on eviction.")
public class PassivationInterceptor extends JmxStatsCommandInterceptor {
PassivationManager passivator;
DataContainer dataContainer;
private static final Log log = LogFactory.getLog(PassivationInterceptor.class);
@Override
protected Log getLog() {
return log;
}
@Inject
public void setDependencies(PassivationManager passivator, DataContainer dataContainer) {
this.passivator = passivator;
this.dataContainer = dataContainer;
}
@Override
public Object visitEvictCommand(InvocationContext ctx, EvictCommand command) throws Throwable {
Object key = command.getKey();
passivator.passivate(dataContainer.get(key, null));
return invokeNextInterceptor(ctx, command);
}
@Override
@ManagedOperation(description = "Resets statistics gathered by this component")
@Operation(displayName = "Reset statistics")
public void resetStatistics() {
passivator.resetPassivationCount();
}
@ManagedAttribute(description = "Number of passivation events")
@Metric(displayName = "Number of cache passivations", measurementType = MeasurementType.TRENDSUP)
public String getPassivations() {
if (!getStatisticsEnabled()) return "N/A";
return String.valueOf(passivator.getPassivationCount());
}
}