/*
 * Copyright (c) 2013, 2020 Oracle and/or its affiliates. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v. 2.0, which is available at
 * http://www.eclipse.org/legal/epl-2.0.
 *
 * This Source Code may also be made available under the following Secondary
 * Licenses when the conditions for such availability set forth in the
 * Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
 * version 2 with the GNU Classpath Exception, which is available at
 * https://www.gnu.org/software/classpath/license.html.
 *
 * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
 */

package org.glassfish.grizzly.monitoring;

import java.lang.reflect.Constructor;
import java.util.logging.Level;
import java.util.logging.Logger;

import org.glassfish.grizzly.Grizzly;

The class, which contains utility methods for monitoring support.
Author:Alexey Stashok
/** * The class, which contains utility methods for monitoring support. * * @author Alexey Stashok */
public class MonitoringUtils { private static final Logger LOGGER = Grizzly.logger(MonitoringUtils.class);
Load JMX object class and create an instance using constructor with constructorParam.getClass() parameter. The constructorParam will be passed to the constructor as a parameter.
Params:
  • jmxObjectClassname – the JMX object class name.
  • constructorParam – the parameter to be passed to the constructor.
Returns:instance of jmxObjectClassname class.
/** * Load JMX object class and create an instance using constructor with constructorParam.getClass() parameter. The * constructorParam will be passed to the constructor as a parameter. * * @param jmxObjectClassname the JMX object class name. * @param constructorParam the parameter to be passed to the constructor. * @return instance of jmxObjectClassname class. */
public static Object loadJmxObject(final String jmxObjectClassname, final Object constructorParam) { return loadJmxObject(jmxObjectClassname, constructorParam, constructorParam.getClass()); }
Load JMX object class and create an instance using constructor with contructorParamType parameter. The constructorParam will be passed to the constructor as a parameter.
Params:
  • jmxObjectClassname – the JMX object class name.
  • constructorParam – the parameter to be passed to the constructor.
  • contructorParamType – the constructor parameter type, used to find appropriate constructor.
Returns:instance of jmxObjectClassname class.
/** * Load JMX object class and create an instance using constructor with contructorParamType parameter. The * constructorParam will be passed to the constructor as a parameter. * * @param jmxObjectClassname the JMX object class name. * @param constructorParam the parameter to be passed to the constructor. * @param contructorParamType the constructor parameter type, used to find appropriate constructor. * @return instance of jmxObjectClassname class. */
public static Object loadJmxObject(final String jmxObjectClassname, final Object constructorParam, final Class contructorParamType) { try { final Class<?> clazz = loadClass(jmxObjectClassname); final Constructor<?> c = clazz.getDeclaredConstructor(contructorParamType); return c.newInstance(constructorParam); } catch (Exception e) { LOGGER.log(Level.FINE, "Can not load JMX Object: " + jmxObjectClassname, e); } return null; } private static Class<?> loadClass(final String classname) throws ClassNotFoundException { ClassLoader classLoader = Thread.currentThread().getContextClassLoader(); if (classLoader == null) { classLoader = MonitoringUtils.class.getClassLoader(); } return classLoader.loadClass(classname); } }