| /* |
| * 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 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.trace("Will try to load mx4j now, if it's in the classpath"); |
| MBeanWrapper mbs = MBeanWrapper.instance; |
| 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.trace("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; |
| } |
| } |