org.apache.catalina.ant.jmx.JMXAccessorCreateTask Maven / Gradle / Ivy

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/*
 * 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.catalina.ant.jmx;

import java.util.ArrayList;
import java.util.List;

import javax.management.MBeanServerConnection;
import javax.management.ObjectName;

import org.apache.tools.ant.BuildException;

/**
 * Create new MBean at JMX JSR 160 MBeans Server.
 * 
 * Create Mbeans
 * Create Mbeans with parameter
 * Create remote Mbeans with different classloader
 * 
 * 
 * Examples:
 * 

 * create a new Mbean at jmx.server connection
 * 
 *  *   <jmx:create
 *           ref="jmx.server"
 *           name="Catalina:type=MBeanFactory"
 *           className="org.apache.catalina.mbeans.MBeanFactory"
 *           classLoader="Catalina:type=ServerClassLoader,name=server">
 *            <Arg value="org.apache.catalina.mbeans.MBeanFactory" />
 *   </jmxCreate/>
 * 
 * 
 * WARNINGNot all Tomcat MBeans can create remotely and autoregister by its parents!
 * Please, use the MBeanFactory operation to generate valves and realms.
 * 
 * 
 * First call to a remote MBeanserver save the JMXConnection a reference jmx.server
 * 
 * These tasks require Ant 1.6 or later interface.
 *
 * @author Peter Rossbach
 * @since 5.5.12
 */
public class JMXAccessorCreateTask extends JMXAccessorTask {
    // ----------------------------------------------------- Instance Variables

    private String className;
    private String classLoader;
    private List args=new ArrayList<>();

    // ------------------------------------------------------------- Properties

    /**
     * @return Returns the classLoader.
     */
    public String getClassLoader() {
        return classLoader;
    }

    /**
     * @param classLoaderName The classLoader to set.
     */
    public void setClassLoader(String classLoaderName) {
        this.classLoader = classLoaderName;
    }

    /**
     * @return Returns the className.
     */
    public String getClassName() {
        return className;
    }

    /**
     * @param className The className to set.
     */
    public void setClassName(String className) {
        this.className = className;
    }

    public void addArg(Arg arg ) {
        args.add(arg);
    }

    /**
     * @return Returns the args.
     */
    public List getArgs() {
        return args;
    }
    /**
     * @param args The args to set.
     */
    public void setArgs(List args) {
        this.args = args;
    }

    // ------------------------------------------------------ protected Methods

    @Override
    public String jmxExecute(MBeanServerConnection jmxServerConnection)
        throws Exception {

        if (getName() == null) {
            throw new BuildException("Must specify a 'name'");
        }
        if ((className == null)) {
            throw new BuildException(
                    "Must specify a 'className' for get");
        }
        jmxCreate(jmxServerConnection, getName());
        return null;
     }

    /**
     * Create new MBean from ClassLoader identified by an ObjectName.
     *
     * @param jmxServerConnection Connection to the JMX server
     * @param name MBean name
     * @throws Exception Error creating MBean
     */
    protected void jmxCreate(MBeanServerConnection jmxServerConnection,
            String name) throws Exception {
        Object argsA[] = null;
        String sigA[] = null;
        if (args != null) {
           argsA = new Object[ args.size()];
           sigA = new String[args.size()];
           for( int i=0; i