001 /** 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017 package org.apache.geronimo.console.jsr77; 018 019 import javax.servlet.http.HttpSession; 020 import javax.management.j2ee.statistics.JVMStats; 021 import javax.management.j2ee.statistics.BoundedRangeStatistic; 022 import uk.ltd.getahead.dwr.WebContextFactory; 023 import org.apache.geronimo.console.util.PortletManager; 024 import org.apache.geronimo.console.util.ManagementHelper; 025 import org.apache.geronimo.management.geronimo.J2EEDomain; 026 import org.apache.geronimo.management.StatisticsProvider; 027 import org.apache.geronimo.management.geronimo.J2EEServer; 028 import org.apache.geronimo.management.geronimo.JVM; 029 030 /** 031 * Looks up JSR-77 statistics in response to AJAX calls from portlets. 032 * 033 * @version $Rev: 476061 $ $Date: 2006-11-17 01:36:50 -0500 (Fri, 17 Nov 2006) $ 034 */ 035 public class Jsr77Lookup { 036 public DynamicServerInfo getJavaVMStatistics() { 037 HttpSession session = WebContextFactory.get().getSession(false); 038 ManagementHelper helper = PortletManager.getManagementHelper(session); 039 J2EEDomain[] domains = helper.getDomains(); 040 J2EEServer[] servers = domains[0].getServerInstances(); 041 JVM[] jvms = helper.getJavaVMs(servers[0]); 042 long elapsed = System.currentTimeMillis() - jvms[0].getKernelBootTime().getTime(); 043 if(jvms[0].isStatisticsProvider()) { 044 JVMStats stats = (JVMStats) ((StatisticsProvider)jvms[0]).getStats(); 045 BoundedRangeStatistic heap = stats.getHeapSize(); 046 return new DynamicServerInfo(heap.getCurrent(), heap.getHighWaterMark(), heap.getUpperBound(), elapsed); 047 } else { 048 return new DynamicServerInfo(elapsed); 049 } 050 } 051 }