001/* 002 * Copyright (C) 2012 eXo Platform SAS. 003 * 004 * This is free software; you can redistribute it and/or modify it 005 * under the terms of the GNU Lesser General Public License as 006 * published by the Free Software Foundation; either version 2.1 of 007 * the License, or (at your option) any later version. 008 * 009 * This software is distributed in the hope that it will be useful, 010 * but WITHOUT ANY WARRANTY; without even the implied warranty of 011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 012 * Lesser General Public License for more details. 013 * 014 * You should have received a copy of the GNU Lesser General Public 015 * License along with this software; if not, write to the Free 016 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 017 * 02110-1301 USA, or see the FSF site: http://www.fsf.org. 018 */ 019package org.crsh.text.renderers; 020 021import org.crsh.text.Color; 022import org.crsh.text.Decoration; 023import org.crsh.text.LineRenderer; 024import org.crsh.text.Renderer; 025import org.crsh.text.ui.LabelElement; 026import org.crsh.text.ui.Overflow; 027import org.crsh.text.ui.RowElement; 028import org.crsh.text.ui.TableElement; 029import org.crsh.util.Utils; 030 031import javax.management.InstanceNotFoundException; 032import javax.management.IntrospectionException; 033import javax.management.JMException; 034import javax.management.MBeanInfo; 035import javax.management.MBeanServer; 036import javax.management.ObjectName; 037import javax.management.ReflectionException; 038import java.lang.management.ManagementFactory; 039import java.util.Collections; 040import java.util.Iterator; 041import java.util.List; 042 043/** 044 * @author Julien Viet 045 */ 046public class ObjectNameRenderer extends Renderer<ObjectName> { 047 048 @Override 049 public Class<ObjectName> getType() { 050 return ObjectName.class; 051 } 052 053 @Override 054 public LineRenderer renderer(Iterator<ObjectName> stream) { 055 056 MBeanServer server = ManagementFactory.getPlatformMBeanServer(); 057 058 List<ObjectName> names = Utils.list(stream); 059 Collections.sort(names); 060 061 // 062 TableElement table = new TableElement().overflow(Overflow.HIDDEN).rightCellPadding(1); 063 064 // Header 065 table.add( 066 new RowElement(). 067 style(Decoration.bold.fg(Color.black).bg(Color.white)). 068 add("NAME", "CLASSNAME", "MXBEAN", "DESCRIPTION") 069 ); 070 071 // 072 for (ObjectName name : names) { 073 074 String className; 075 String description; 076 String mxbean; 077 try { 078 MBeanInfo info = server.getMBeanInfo(name); 079 className = info.getClassName(); 080 description = info.getDescription(); 081 Object mxbeanValue = info.getDescriptor().getFieldValue("mxbean"); 082 mxbean = mxbeanValue != null ? mxbeanValue.toString() : "false"; 083 } 084 catch (JMException ignore) { 085 className = ""; 086 description = ""; 087 mxbean = ""; 088 } 089 090 // 091 table.row("" + name, className, mxbean, description); 092 } 093 094 // 095 return table.renderer(); 096 } 097}