/* * 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.cassandra.utils; import java.lang.management.ManagementFactory; import javax.management.MBeanServer; import javax.management.ObjectName; import org.slf4j.Logger; import org.slf4j.LoggerFactory; /** * If mx4j-tools is in the classpath call maybeLoad to load the HTTP interface of mx4j. * * The default port is 8081. To override that provide e.g. -Dmx4jport=8082 * The default listen address is 0.0.0.0. To override that provide -Dmx4jaddress=127.0.0.1 */ public class Mx4jTool { private static final Logger logger = LoggerFactory.getLogger(Mx4jTool.class); /** * Starts a JMX over http interface if and mx4j-tools.jar is in the classpath. * @return true if successfully loaded. */ public static boolean maybeLoad() { try { logger.debug("Will try to load mx4j now, if it's in the classpath"); MBeanServer mbs = ManagementFactory.getPlatformMBeanServer(); ObjectName processorName = new ObjectName("Server:name=XSLTProcessor"); Class<?> httpAdaptorClass = Class.forName("mx4j.tools.adaptor.http.HttpAdaptor"); Object httpAdaptor = httpAdaptorClass.newInstance(); httpAdaptorClass.getMethod("setHost", String.class).invoke(httpAdaptor, getAddress()); httpAdaptorClass.getMethod("setPort", Integer.TYPE).invoke(httpAdaptor, getPort()); ObjectName httpName = new ObjectName("system:name=http"); mbs.registerMBean(httpAdaptor, httpName); Class<?> xsltProcessorClass = Class.forName("mx4j.tools.adaptor.http.XSLTProcessor"); Object xsltProcessor = xsltProcessorClass.newInstance(); httpAdaptorClass.getMethod("setProcessor", Class.forName("mx4j.tools.adaptor.http.ProcessorMBean")). invoke(httpAdaptor, xsltProcessor); mbs.registerMBean(xsltProcessor, processorName); httpAdaptorClass.getMethod("start").invoke(httpAdaptor); logger.info("mx4j successfuly loaded"); return true; } catch (ClassNotFoundException e) { logger.debug("Will not load MX4J, mx4j-tools.jar is not in the classpath"); } catch(Exception e) { logger.warn("Could not start register mbean in JMX", e); } return false; } private static String getAddress() { return System.getProperty("mx4jaddress", FBUtilities.getBroadcastAddress().getHostAddress()); } private static int getPort() { int port = 8081; String sPort = System.getProperty("mx4jport"); if (sPort != null && !sPort.equals("")) { port = Integer.parseInt(sPort); } return port; } }