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Java > Open Source Codes > org > jboss > aspects > remoting > InvokeRemoteInterceptor


1 /*
2   * JBoss, Home of Professional Open Source
3   * Copyright 2005, JBoss Inc., and individual contributors as indicated
4   * by the @authors tag. See the copyright.txt in the distribution for a
5   * full listing of individual contributors.
6   *
7   * This is free software; you can redistribute it and/or modify it
8   * under the terms of the GNU Lesser General Public License as
9   * published by the Free Software Foundation; either version 2.1 of
10   * the License, or (at your option) any later version.
11   *
12   * This software is distributed in the hope that it will be useful,
13   * but WITHOUT ANY WARRANTY; without even the implied warranty of
14   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15   * Lesser General Public License for more details.
16   *
17   * You should have received a copy of the GNU Lesser General Public
18   * License along with this software; if not, write to the Free
19   * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20   * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
21   */
22 package org.jboss.aspects.remoting;
23
24 import java.io.ObjectStreamException JavaDoc;
25
26 import org.jboss.logging.Logger;
27 import org.jboss.remoting.Client;
28 import org.jboss.remoting.InvokerLocator;
29 /**
30  * Checks to see if this object is local in VM
31  *
32  * @author <a HREF="mailto:bill@jboss.org">Bill Burke</a>
33  * @version $Revision: 58120 $
34  */
35 public class InvokeRemoteInterceptor implements org.jboss.aop.advice.Interceptor, java.io.Serializable JavaDoc
36 {
37    private static final Logger log = Logger.getLogger(InvokeRemoteInterceptor.class);
38    
39    private static final long serialVersionUID = -145166951731929406L;
40    
41    public static final InvokeRemoteInterceptor singleton = new InvokeRemoteInterceptor();
42    public static final String JavaDoc REMOTING = "REMOTING";
43    public static final String JavaDoc INVOKER_LOCATOR = "INVOKER_LOCATOR";
44    public static final String JavaDoc SUBSYSTEM = "SUBSYSTEM";
45
46    public String JavaDoc getName() { return "InvokeRemoteInterceptor"; }
47
48    public Object JavaDoc invoke(org.jboss.aop.joinpoint.Invocation invocation) throws Throwable JavaDoc
49    {
50       InvokerLocator locator = (InvokerLocator)invocation.getMetaData(REMOTING, INVOKER_LOCATOR);
51       if (locator == null)
52       {
53          throw new RuntimeException JavaDoc("No InvokerLocator supplied. Can't invoke remotely!");
54       }
55       String JavaDoc subsystem = (String JavaDoc)invocation.getMetaData(REMOTING, SUBSYSTEM);
56       if (subsystem == null) subsystem = "AOP";
57       Client client = new Client(locator, subsystem);
58       
59       try
60       {
61          client.connect();
62          org.jboss.aop.joinpoint.InvocationResponse response = (org.jboss.aop.joinpoint.InvocationResponse)client.invoke(invocation, null);
63          invocation.setResponseContextInfo(response.getContextInfo());
64          return response.getResponse();
65       }
66       catch (Exception JavaDoc e)
67       {
68          StackTraceElement JavaDoc[] serverStackTrace;
69          if (e.getCause() != null)
70             serverStackTrace = e.getCause().getStackTrace();
71          else
72             serverStackTrace = e.getStackTrace();
73          
74          Exception JavaDoc clientException = new Exception JavaDoc();
75          StackTraceElement JavaDoc[] clientStackTrace = clientException.getStackTrace();
76          StackTraceElement JavaDoc[] completeStackTrace = new StackTraceElement JavaDoc[serverStackTrace.length + clientStackTrace.length];
77          System.arraycopy(serverStackTrace, 0, completeStackTrace, 0, serverStackTrace.length);
78          System.arraycopy(clientStackTrace, 0, completeStackTrace, serverStackTrace.length, clientStackTrace.length);
79          
80          if (e.getCause() != null)
81             e.getCause().setStackTrace(completeStackTrace);
82          else
83             e.setStackTrace(completeStackTrace);
84          
85          throw e;
86       }
87       finally
88       {
89          client.disconnect();
90       }
91    }
92
93    Object JavaDoc readResolve() throws ObjectStreamException JavaDoc {
94       return singleton;
95    }
96 }
97
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