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1
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13
14 package org.webjmx.adapter;
15
16 import java.io.*;
17 import java.util.*;
18 import javax.management.*;
19 import javax.xml.parsers.*;
20
21 import org.webjmx.tags.JMXTaglibConstants;
22 import org.webjmx.adapter.xml.*;
23
24 import org.xml.sax.*;
26 import org.w3c.dom.*;
27
28
29
34 public class AdapterFactory
35 implements JMXTaglibConstants
36 {
37 private static final String  PROP_FILE = "/AdapterFactoryInit.xml";
38 private static Map AdapterTypeMap = new HashMap();
40 private static Map AdapterMap = new HashMap();
41
42 static
43 {
44 if(System.getProperty(PARSER_PROP_NAME) == null)
46 System.setProperty(PARSER_PROP_NAME, "org.apache.xerces.parsers.SAXParser");
47
48 if(Boolean.getBoolean(DEBUG_PROP)) System.out.println("initalizing AdapterFactory from properties file ...");
49 InputStream in = AdapterFactory.class.getResourceAsStream(PROP_FILE);
50 try
51 {
52 if(in != null && in.available() > 0)
53 {
54
55 AdapterFactoryInit init = parseDOMTree(in);
56
57 for(int i = 0; i < init.getServices().size(); i++)
59 {
60 try{ init.getService(i).verify(); }
61 catch(Exception ex)
62 {
63 if(Boolean.getBoolean(DEBUG_PROP)) System.out.println("Warning: failed to map service: " +init.getService(i));
64 continue;
65 }
66
67 AdapterTypeMap.put(init.getService(i).getName(), init.getService(i).getClassName());
68 if(Boolean.getBoolean(DEBUG_PROP)) System.out.println("mapped class [" +init.getService(i).getClassName()
69 +"] to service name: " +init.getService(i).getName());
70 }
71
72 for(int i = 0; i < init.getAdapters().size(); i++)
74 {
75 List l = findMBeanServer(init.getAdapter(i).getLocator());
76 try
77 {
78 for(int j = 0; j < l.size() && init.getAdapter(i).isPreload(); j++)
79 ((JMXServiceAdapter)l.get(j)).connect();
80 }catch(Exception ex)
81 {
82 if(Boolean.getBoolean(DEBUG_PROP)) System.out.println("Warning: failed to map Adapter: " +init.getAdapter(i));
83 continue;
84 }
85
86 AdapterMap.put(init.getAdapter(i).getName(), l);
87 if(Boolean.getBoolean(DEBUG_PROP)) System.out.println("mapped Adapter locaton [" +init.getAdapter(i).getLocator()
88 +"] to alias: " +init.getAdapter(i).getName());
89 }
90 }else
91 System.out.println("no property file found");
92 }catch(Exception ex)
93 {
94 System.out.println("exception caught while processing properties file: " +ex);
95 ex.printStackTrace();
96 }
97
98 if(!AdapterTypeMap.containsKey(SOCKET_SERVICE_NAME))
100 AdapterTypeMap.put(SOCKET_SERVICE_NAME, SOCKET_SERVICE_CLASS);
101 else
102 if(Boolean.getBoolean(DEBUG_PROP)) System.out.println(SOCKET_SERVICE_NAME +" service already mapped.");
103
104 }
105
106 private static AdapterFactoryInit parseDOMTree(InputStream in)
107 throws Exception
108 {
109 AdapterFactoryInit init = new AdapterFactoryInit();
110 DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
111 dbf.setNamespaceAware(true);
112 dbf.setIgnoringComments(true);
113 DocumentBuilder db = dbf.newDocumentBuilder();
114 Document doc = db.parse(in);
115 Element root = doc.getDocumentElement();
116 for(int i = 0; i < root.getChildNodes().getLength(); i++)
117 {
118 Node node = root.getChildNodes().item(i);
119 if(node.getNodeName().equals("ServiceMapping"))
121 {
122 ServiceMapping mapping = new ServiceMapping();
123 mapping.setName(node.getAttributes().getNamedItem("name").getNodeValue());
124 mapping.setClassName(node.getAttributes().getNamedItem("class").getNodeValue());
125 init.getServices().add(mapping);
127 }else if(node.getNodeName().equals("AdapterMapping"))
128 {
129 AdapterMapping mapping = new AdapterMapping();
130 mapping.setName(node.getAttributes().getNamedItem("name").getNodeValue());
131 mapping.setLocator(node.getAttributes().getNamedItem("locator").getNodeValue());
132 if(node.getAttributes().getNamedItem("preload") != null)
133 mapping.setPreload("true".equalsIgnoreCase(node.getAttributes().getNamedItem("preload").getNodeValue()));
134 init.getAdapters().add(mapping);
136 }else
137 System.out.println("Unknown XML element name: " +node.getNodeName());
138 }
139 return init;
140 }
141
142 static public List findMBeanServer(String locator)
145 {
146 Object o = AdapterMap.get(locator);
148 if(o != null)
150 return (ArrayList)o;
151
152 if(locator == null)
153 return MBeanServerFactory.findMBeanServer(null);
154
155 StringTokenizer semiTok = new StringTokenizer(locator, ";", true);
157
158 String AdapterType = semiTok.nextToken();
159 if(AdapterType.equals(";"))
160 AdapterType = null;
161 else if(semiTok.hasMoreTokens())
162 semiTok.nextToken();
163
164 List parameters = new ArrayList();
165 String params = null;
166 if(semiTok.hasMoreTokens())
167 params = semiTok.nextToken();
168 if(params != null && !params.equals(";"))
169 {
170 StringTokenizer colonTok = new StringTokenizer(params, ":");
172 while(colonTok.hasMoreTokens())
173 parameters.add(colonTok.nextToken());
174
175 if(semiTok.hasMoreTokens())
177 semiTok.nextToken();
178 }
179
181 if(AdapterType == null)
183 AdapterType = DEFAULT_SERVICE_NAME;
184
185 if(AdapterType.equals(DEFAULT_SERVICE_NAME))
186 {
187 String defaultDomain = null;
188 if(parameters.size() > 0)
189 defaultDomain = (String )parameters.get(0);
190 String agentID = null;
191 if(parameters.size() > 1)
192 agentID = (String )parameters.get(1);
193
194 List l = MBeanServerFactory.findMBeanServer(agentID);
195
197 for(int i = l.size() -1; defaultDomain != null && i > -1; i--)
199 {
200 MBeanServer s = (MBeanServer)l.get(i);
201 if(!s.getDefaultDomain().equals(defaultDomain))
202 l.remove(i);
203 }
204
205 AdapterMap.put(locator, l);
207
208 return l;
210 }
211
212 Object className = AdapterTypeMap.get(AdapterType);
213 if(className == null)
214 className = AdapterType;
215 Class cls = null;
216
217 try{ cls = Class.forName(className.toString()); }
218 catch(ClassNotFoundException ce)
219 {
220 System.out.println("unknown Adapter type: " +AdapterType);
221 ce.printStackTrace();
222 return null;
223 }
224
225 try{ o = cls.newInstance(); }
226 catch(Exception ex)
227 {
228 System.out.println("problem with Adapter class: " +ex.getClass());
229 ex.printStackTrace();
230 return null;
231 }
232
233 if(!(o instanceof JMXServiceAdapter))
234 {
235 System.out.println("bad Adapter class mapping, Adapter class must implement JMXServiceAdapter: " +o);
236 return null;
237 }
238
239 JMXServiceAdapter Adapter = (JMXServiceAdapter)o;
240 try
241 {
242 Adapter.initialize(parameters);
243 Adapter.connect();
244 }catch(Exception ex)
245 {
246 ex.printStackTrace();
247 return null;
248 }
249
250 ArrayList list = new ArrayList();
251 list.add(Adapter);
252
253
255 AdapterMap.put(locator, list);
257
258 return list;
259 }
260
261 public static void main(String args[])
262 {
263 System.out.println("Type Map: ");
265 Iterator it = AdapterTypeMap.keySet().iterator();
266 while(it.hasNext())
267 {
268 Object key = it.next();
269 System.out.println("[" +key +"] " +AdapterTypeMap.get(key));
270 }
271 System.out.println("\n\nAdapter Map: ");
272 it = AdapterMap.keySet().iterator();
273 while(it.hasNext())
274 {
275 Object key = it.next();
276 System.out.println("[" +key +"] " +AdapterMap.get(key));
277 }
278 }
279 }
280
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