/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.apache.geronimo.console.jsr77;
import javax.servlet.http.HttpSession;
import javax.management.j2ee.statistics.JVMStats;
import javax.management.j2ee.statistics.BoundedRangeStatistic;
import uk.ltd.getahead.dwr.WebContextFactory;
import org.apache.geronimo.console.util.PortletManager;
import org.apache.geronimo.console.util.ManagementHelper;
import org.apache.geronimo.management.geronimo.J2EEDomain;
import org.apache.geronimo.management.StatisticsProvider;
import org.apache.geronimo.management.geronimo.J2EEServer;
import org.apache.geronimo.management.geronimo.JVM;
/**
* Looks up JSR-77 statistics in response to AJAX calls from portlets.
*
* @version $Rev: 476061 $ $Date: 2006-11-17 01:36:50 -0500 (Fri, 17 Nov 2006) $
*/
public class Jsr77Lookup {
public DynamicServerInfo getJavaVMStatistics() {
HttpSession session = WebContextFactory.get().getSession(false);
ManagementHelper helper = PortletManager.getManagementHelper(session);
J2EEDomain[] domains = helper.getDomains();
J2EEServer[] servers = domains[0].getServerInstances();
JVM[] jvms = helper.getJavaVMs(servers[0]);
long elapsed = System.currentTimeMillis() - jvms[0].getKernelBootTime().getTime();
if(jvms[0].isStatisticsProvider()) {
JVMStats stats = (JVMStats) ((StatisticsProvider)jvms[0]).getStats();
BoundedRangeStatistic heap = stats.getHeapSize();
return new DynamicServerInfo(heap.getCurrent(), heap.getHighWaterMark(), heap.getUpperBound(), elapsed);
} else {
return new DynamicServerInfo(elapsed);
}
}
}