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19 package org.eclipse.jetty.plus.webapp;
20
21 import java.net.URL;
22 import java.util.ArrayList;
23 import java.util.Collections;
24 import java.util.Iterator;
25 import java.util.List;
26
27 import javax.naming.Binding;
28 import javax.naming.Context;
29 import javax.naming.InitialContext;
30 import javax.naming.Name;
31 import javax.naming.NameNotFoundException;
32 import javax.naming.NamingException;
33
34 import org.eclipse.jetty.jndi.NamingContext;
35 import org.eclipse.jetty.jndi.NamingUtil;
36 import org.eclipse.jetty.jndi.local.localContextRoot;
37 import org.eclipse.jetty.plus.jndi.EnvEntry;
38 import org.eclipse.jetty.plus.jndi.NamingEntryUtil;
39 import org.eclipse.jetty.util.log.Log;
40 import org.eclipse.jetty.util.log.Logger;
41 import org.eclipse.jetty.webapp.AbstractConfiguration;
42 import org.eclipse.jetty.webapp.Configuration;
43 import org.eclipse.jetty.webapp.WebAppContext;
44 import org.eclipse.jetty.xml.XmlConfiguration;
45
46
47
48
49
50
51
52 public class EnvConfiguration extends AbstractConfiguration
53 {
54 private static final Logger LOG = Log.getLogger(EnvConfiguration.class);
55
56 private static final String JETTY_ENV_BINDINGS = "org.eclipse.jetty.jndi.EnvConfiguration";
57 private URL jettyEnvXmlUrl;
58
59 public void setJettyEnvXml (URL url)
60 {
61 this.jettyEnvXmlUrl = url;
62 }
63
64
65
66
67
68 @Override
69 public void preConfigure (WebAppContext context) throws Exception
70 {
71
72 createEnvContext(context);
73 }
74
75
76
77
78 @Override
79 public void configure (WebAppContext context) throws Exception
80 {
81 if (LOG.isDebugEnabled())
82 LOG.debug("Created java:comp/env for webapp "+context.getContextPath());
83
84
85
86 if (jettyEnvXmlUrl == null)
87 {
88
89
90 org.eclipse.jetty.util.resource.Resource web_inf = context.getWebInf();
91 if(web_inf!=null && web_inf.isDirectory())
92 {
93 org.eclipse.jetty.util.resource.Resource jettyEnv = web_inf.addPath("jetty-env.xml");
94 if(jettyEnv.exists())
95 {
96 jettyEnvXmlUrl = jettyEnv.getURL();
97 }
98 }
99 }
100
101 if (jettyEnvXmlUrl != null)
102 {
103 synchronized (localContextRoot.getRoot())
104 {
105
106 final List<Bound> bindings = new ArrayList<Bound>();
107 NamingContext.Listener listener = new NamingContext.Listener()
108 {
109 public void unbind(NamingContext ctx, Binding binding)
110 {
111 }
112
113 public Binding bind(NamingContext ctx, Binding binding)
114 {
115 bindings.add(new Bound(ctx,binding.getName()));
116 return binding;
117 }
118 };
119
120 try
121 {
122 localContextRoot.getRoot().addListener(listener);
123 XmlConfiguration configuration = new XmlConfiguration(jettyEnvXmlUrl);
124 configuration.configure(context);
125 }
126 finally
127 {
128 localContextRoot.getRoot().removeListener(listener);
129 context.setAttribute(JETTY_ENV_BINDINGS,bindings);
130 }
131 }
132 }
133
134
135 bindEnvEntries(context);
136 }
137
138
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142
143
144 @Override
145 public void deconfigure (WebAppContext context) throws Exception
146 {
147
148 ClassLoader oldLoader = Thread.currentThread().getContextClassLoader();
149 Thread.currentThread().setContextClassLoader(context.getClassLoader());
150 try
151 {
152 Context ic = new InitialContext();
153 Context compCtx = (Context)ic.lookup ("java:comp");
154 compCtx.destroySubcontext("env");
155
156
157 @SuppressWarnings("unchecked")
158 List<Bound> bindings = (List<Bound>)context.getAttribute(JETTY_ENV_BINDINGS);
159 context.setAttribute(JETTY_ENV_BINDINGS,null);
160 if (bindings!=null)
161 {
162 Collections.reverse(bindings);
163 for (Bound b:bindings)
164 b._context.destroySubcontext(b._name);
165 }
166 }
167 catch (NameNotFoundException e)
168 {
169 LOG.warn(e);
170 }
171 finally
172 {
173 Thread.currentThread().setContextClassLoader(oldLoader);
174 }
175 }
176
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181
182
183 @Override
184 public void destroy (WebAppContext context) throws Exception
185 {
186 try
187 {
188
189 NamingContext scopeContext = (NamingContext)NamingEntryUtil.getContextForScope(context);
190 scopeContext.getParent().destroySubcontext(scopeContext.getName());
191 }
192 catch (NameNotFoundException e)
193 {
194 LOG.ignore(e);
195 LOG.debug("No naming entries configured in environment for webapp "+context);
196 }
197 }
198
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204
205
206 public void bindEnvEntries (WebAppContext context)
207 throws NamingException
208 {
209 LOG.debug("Binding env entries from the jvm scope");
210 InitialContext ic = new InitialContext();
211 Context envCtx = (Context)ic.lookup("java:comp/env");
212 Object scope = null;
213 List<Object> list = NamingEntryUtil.lookupNamingEntries(scope, EnvEntry.class);
214 Iterator<Object> itor = list.iterator();
215 while (itor.hasNext())
216 {
217 EnvEntry ee = (EnvEntry)itor.next();
218 ee.bindToENC(ee.getJndiName());
219 Name namingEntryName = NamingEntryUtil.makeNamingEntryName(null, ee);
220 NamingUtil.bind(envCtx, namingEntryName.toString(), ee);
221 }
222
223 LOG.debug("Binding env entries from the server scope");
224
225 scope = context.getServer();
226 list = NamingEntryUtil.lookupNamingEntries(scope, EnvEntry.class);
227 itor = list.iterator();
228 while (itor.hasNext())
229 {
230 EnvEntry ee = (EnvEntry)itor.next();
231 ee.bindToENC(ee.getJndiName());
232 Name namingEntryName = NamingEntryUtil.makeNamingEntryName(null, ee);
233 NamingUtil.bind(envCtx, namingEntryName.toString(), ee);
234 }
235
236 LOG.debug("Binding env entries from the context scope");
237 scope = context;
238 list = NamingEntryUtil.lookupNamingEntries(scope, EnvEntry.class);
239 itor = list.iterator();
240 while (itor.hasNext())
241 {
242 EnvEntry ee = (EnvEntry)itor.next();
243 ee.bindToENC(ee.getJndiName());
244 Name namingEntryName = NamingEntryUtil.makeNamingEntryName(null, ee);
245 NamingUtil.bind(envCtx, namingEntryName.toString(), ee);
246 }
247 }
248
249 protected void createEnvContext (WebAppContext wac)
250 throws NamingException
251 {
252 ClassLoader old_loader = Thread.currentThread().getContextClassLoader();
253 Thread.currentThread().setContextClassLoader(wac.getClassLoader());
254 try
255 {
256 Context context = new InitialContext();
257 Context compCtx = (Context)context.lookup ("java:comp");
258 compCtx.createSubcontext("env");
259 }
260 finally
261 {
262 Thread.currentThread().setContextClassLoader(old_loader);
263 }
264 }
265
266 private static class Bound
267 {
268 final NamingContext _context;
269 final String _name;
270 Bound(NamingContext context, String name)
271 {
272 _context=context;
273 _name=name;
274 }
275 }
276 }