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Glassfish example source code file (EJBMethodStatsManagerImpl.java)
The Glassfish EJBMethodStatsManagerImpl.java source code/* * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. * * Copyright (c) 1997-2010 Oracle and/or its affiliates. All rights reserved. * * The contents of this file are subject to the terms of either the GNU * General Public License Version 2 only ("GPL") or the Common Development * and Distribution License("CDDL") (collectively, the "License"). You * may not use this file except in compliance with the License. You can * obtain a copy of the License at * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html * or packager/legal/LICENSE.txt. See the License for the specific * language governing permissions and limitations under the License. * * When distributing the software, include this License Header Notice in each * file and include the License file at packager/legal/LICENSE.txt. * * GPL Classpath Exception: * Oracle designates this particular file as subject to the "Classpath" * exception as provided by Oracle in the GPL Version 2 section of the License * file that accompanied this code. * * Modifications: * If applicable, add the following below the License Header, with the fields * enclosed by brackets [] replaced by your own identifying information: * "Portions Copyright [year] [name of copyright owner]" * * Contributor(s): * If you wish your version of this file to be governed by only the CDDL or * only the GPL Version 2, indicate your decision by adding "[Contributor] * elects to include this software in this distribution under the [CDDL or GPL * Version 2] license." If you don't indicate a single choice of license, a * recipient has the option to distribute your version of this file under * either the CDDL, the GPL Version 2 or to extend the choice of license to * its licensees as provided above. However, if you add GPL Version 2 code * and therefore, elected the GPL Version 2 license, then the option applies * only if the new code is made subject to such option by the copyright * holder. */ package com.sun.ejb.base.stats; import com.sun.ejb.spi.stats.EJBMethodStatsManager; import com.sun.enterprise.admin.monitor.registry.MonitoredObjectType; import com.sun.enterprise.admin.monitor.registry.MonitoringRegistrationException; import com.sun.enterprise.admin.monitor.registry.MonitoringRegistry; import java.lang.reflect.Method; import java.util.HashMap; import java.util.logging.Level; import java.util.logging.Logger; /** * A class that manages all the monitored EJB methods * * @author Mahesh Kannan * */ public final class EJBMethodStatsManagerImpl implements EJBMethodStatsManager { private Logger _logger; private MonitoringRegistry registry; private final String appName; private final String modName; private final String ejbName; private final MonitoredObjectType ejbType; private Method[] methods; private boolean methodMonitorOn; private MethodMonitor[] methodMonitors; private HashMap methodMonitorMap; private Object lock = new Object(); private Object[] logParams = null; private boolean prefixWithClassName; EJBMethodStatsManagerImpl(MonitoringRegistry registry, MonitoredObjectType ejbType, String ejbName, String modName, String appName) { this.registry = registry; this.ejbType = ejbType; this.ejbName = ejbName; this.modName = modName; this.appName = appName; logParams = new Object[] {ejbName, modName, appName}; } public final boolean isMethodMonitorOn() { return methodMonitorOn; } public final void preInvoke(Method method) { if (methodMonitorOn) { MethodMonitor monitor = null; synchronized (lock) { if (methodMonitorOn) { monitor = (MethodMonitor) methodMonitorMap.get(method); } } if (monitor != null) { monitor.preInvoke(); } } } public final void postInvoke(Method method, Throwable th) { if (methodMonitorOn) { MethodMonitor monitor = null; synchronized (lock) { if (methodMonitorOn) { monitor = (MethodMonitor) methodMonitorMap.get(method); } } if (monitor != null) { monitor.postInvoke(th); } } } public MethodMonitor[] getMethodMonitors() { return this.methodMonitors; } public void undeploy() { synchronized (lock) { methodMonitorOn = false; } deregisterStats(); methods = null; methodMonitors = null; methodMonitorMap = null; registry = null; } void registerMethods(Method[] methods, boolean prefixWithClassName) { this.prefixWithClassName = prefixWithClassName; this.methods = methods; } void setMethodMonitorOn(boolean monitorOn) { if (methods == null) { _logger.log(Level.WARNING, "base.stats.method.nomethods", logParams); return; } int size = methods.length; if (monitorOn == true) { this.methodMonitors = new MethodMonitor[size]; HashMap map = new HashMap(); for (int i=0; i<size; i++) { methodMonitors[i] = new MethodMonitor(methods[i], prefixWithClassName); map.put(methods[i], methodMonitors[i]); EJBMethodStatsImpl impl = new EJBMethodStatsImpl(methodMonitors[i]); try { if (_logger.isLoggable(Level.FINE)) { _logger.log(Level.FINE, "Registering method: " + methodMonitors[i].getMethodName() + "; for " + appName + "; " + modName + "; " + ejbName); } registry.registerEJBMethodStats(impl, methodMonitors[i].getMethodName(), ejbType, ejbName, modName, appName, null); if (_logger.isLoggable(Level.FINE)) { _logger.log(Level.FINE, "Registered method: " + methodMonitors[i].getMethodName() + "; for " + appName + "; " + modName + "; " + ejbName); } } catch (MonitoringRegistrationException monRegEx) { Object[] params = new Object[] {ejbName, modName, appName, methodMonitors[i].getMethodName()}; _logger.log(Level.WARNING, "base.stats.method.register.monreg.error", params); _logger.log(Level.FINE, "", monRegEx); } catch (Exception ex) { Object[] params = new Object[] {ejbName, modName, appName, methodMonitors[i].getMethodName()}; _logger.log(Level.WARNING, "base.stats.method.register.error", params); _logger.log(Level.FINE, "", ex); } } this.methodMonitorMap = map; synchronized (lock) { this.methodMonitorOn = true; } } else { synchronized (lock) { this.methodMonitorOn = false; } deregisterStats(); this.methodMonitorMap = null; this.methodMonitors = null; } } void appendStats(StringBuffer sbuf) { if (methodMonitors != null) { int size = methods.length; for (int i=0; i<size; i++) { MethodMonitor monitor = (MethodMonitor) methodMonitors[i]; monitor.appendStats(sbuf); } } } private void deregisterStats() { if (methodMonitors == null) { return; } int size = methodMonitors.length; for (int i=0; i<size; i++) { try { registry.unregisterEJBMethodStats( methodMonitors[i].getMethodName(), ejbType, ejbName, modName, appName); if (_logger.isLoggable(Level.FINE)) { _logger.log(Level.FINE, "Unregistered method: " + methodMonitors[i].getMethodName() + "; for " + appName + "; " + modName + "; " + ejbName); } } catch (MonitoringRegistrationException monRegEx) { Object[] params = new Object[] {ejbName, modName, appName, methodMonitors[i].getMethodName()}; _logger.log(Level.FINE, "base.stats.method.unregister.monreg.error", params); _logger.log(Level.FINE, "", monRegEx); } catch (Exception ex) { Object[] params = new Object[] {ejbName, modName, appName, methodMonitors[i].getMethodName()}; _logger.log(Level.WARNING, "base.stats.method.unregister.error", params); _logger.log(Level.FINE, "", ex); } } methodMonitors = null; } } Other Glassfish examples (source code examples)Here is a short list of links related to this Glassfish EJBMethodStatsManagerImpl.java source code file: |
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