/*
* JBoss, Home of Professional Open Source
* Copyright 2009, Red Hat Middleware LLC, and individual contributors
* by the @authors tag. 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.jopr;
import org.infinispan.util.logging.Log;
import org.infinispan.util.logging.LogFactory;
import org.mc4j.ems.connection.EmsConnection;
import org.mc4j.ems.connection.bean.EmsBean;
import org.rhq.core.domain.measurement.AvailabilityType;
import org.rhq.core.domain.measurement.DataType;
import org.rhq.core.domain.measurement.MeasurementDataNumeric;
import org.rhq.core.domain.measurement.MeasurementDataTrait;
import org.rhq.core.domain.measurement.MeasurementReport;
import org.rhq.core.domain.measurement.MeasurementScheduleRequest;
import org.rhq.core.pluginapi.inventory.InvalidPluginConfigurationException;
import org.rhq.core.pluginapi.inventory.ResourceComponent;
import org.rhq.core.pluginapi.inventory.ResourceContext;
import org.rhq.core.pluginapi.measurement.MeasurementFacet;
import org.rhq.plugins.jmx.ObjectNameQueryUtility;
import java.util.Set;
/**
* The component class for the Infinispan manager
*
* @author Heiko W. Rupp
* @author Galder Zamarreño
*/
public class CacheManagerComponent implements ResourceComponent, MeasurementFacet {
private static final Log log = LogFactory.getLog(CacheManagerComponent.class);
private ResourceContext context;
private ConnectionHelper helper;
/**
* Return availability of this resource. We do this by checking the connection to it. If the Manager would expose
* some "run state" we could check for that too.
*
* @see org.rhq.core.pluginapi.inventory.ResourceComponent#getAvailability()
*/
public AvailabilityType getAvailability() {
boolean trace = log.isTraceEnabled();
EmsConnection conn = getConnection();
try {
conn.refresh();
EmsBean bean = queryCacheManagerBean(conn);
if (bean != null) {
bean.refreshAttributes();
if (trace) log.trace("Cache manager could be found and attributes where refreshed, so it's up.", bean);
return AvailabilityType.UP;
}
if (trace) log.trace("Cache manager could not be found, so cache manager is down");
return AvailabilityType.DOWN;
} catch (Exception e) {
if (trace) log.trace("There was an exception checking availability, so cache manager is down");
return AvailabilityType.DOWN;
}
}
/**
* Start the resource connection
*
* @see org.rhq.core.pluginapi.inventory.ResourceComponent#start(org.rhq.core.pluginapi.inventory.ResourceContext)
*/
public void start(ResourceContext context) throws InvalidPluginConfigurationException, Exception {
this.context = context;
this.helper = new ConnectionHelper();
getConnection();
}
/**
* Tear down the rescource connection
*
* @see org.rhq.core.pluginapi.inventory.ResourceComponent#stop()
*/
public void stop() {
helper.closeConnection();
}
/**
* Gather measurement data
*
* @see org.rhq.core.pluginapi.measurement.MeasurementFacet#getValues(org.rhq.core.domain.measurement.MeasurementReport,
* java.util.Set)
*/
public void getValues(MeasurementReport report, Set<MeasurementScheduleRequest> metrics) throws Exception {
boolean trace = log.isTraceEnabled();
if (trace) log.trace("Get values for these metrics: {0}", metrics);
EmsConnection conn = getConnection();
if (trace) log.trace("Connection to ems server stablished: {0}", conn);
EmsBean bean = queryCacheManagerBean(conn);
bean.refreshAttributes();
if (trace) log.trace("Querying returned bean: {0}", bean);
for (MeasurementScheduleRequest req : metrics) {
DataType type = req.getDataType();
if (type == DataType.MEASUREMENT) {
String tmp = (String) bean.getAttribute(req.getName()).getValue();
Double val = Double.valueOf(tmp);
if (trace) log.trace("Metric ({0}) is measurement with value {1}", req.getName(), val);
MeasurementDataNumeric res = new MeasurementDataNumeric(req, val);
report.addData(res);
} else if (type == DataType.TRAIT) {
String value = (String) bean.getAttribute(req.getName()).getValue();
if (trace) log.trace("Metric ({0}) is trait with value {1}", req.getName(), value);
MeasurementDataTrait res = new MeasurementDataTrait(req, value);
report.addData(res);
}
}
}
/**
* Helper to obtain a connection
*
* @return EmsConnection object
*/
protected EmsConnection getConnection() {
return helper.getEmsConnection(context.getPluginConfiguration());
}
private EmsBean queryCacheManagerBean(EmsConnection conn) {
String pattern = context.getPluginConfiguration().getSimpleValue("objectName", null);
if (log.isTraceEnabled()) log.trace("Pattern to query is {0}", pattern);
ObjectNameQueryUtility queryUtility = new ObjectNameQueryUtility(pattern);
return conn.queryBeans(queryUtility.getTranslatedQuery()).get(0);
}
}