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1   /*
2    * Copyright (c) MuleSoft, Inc.  All rights reserved.  http://www.mulesoft.com
3    * The software in this package is published under the terms of the CPAL v1.0
4    * license, a copy of which has been included with this distribution in the
5    * LICENSE.txt file.
6    */
7   package org.mule.module.spring.remoting;
8   
9   import org.mule.api.MuleEventContext;
10  import org.mule.api.lifecycle.Callable;
11  import org.mule.api.lifecycle.Initialisable;
12  import org.mule.api.lifecycle.InitialisationException;
13  import org.mule.config.i18n.CoreMessages;
14  import org.mule.util.ClassUtils;
15  
16  import org.springframework.beans.factory.InitializingBean;
17  import org.springframework.remoting.support.RemoteInvocation;
18  import org.springframework.remoting.support.RemoteInvocationBasedExporter;
19  import org.springframework.remoting.support.RemoteInvocationExecutor;
20  import org.springframework.remoting.support.RemoteInvocationResult;
21  
22  public class SpringRemoteInvokerComponent implements Initialisable, Callable
23  {
24      private Delegate delegate;
25      private Class serviceClass;
26      private Class serviceInterface;
27      private Object serviceBean;
28      private boolean registerTraceInterceptor = false;
29      private RemoteInvocationExecutor remoteInvocationExecutor;
30  
31      private class Delegate extends RemoteInvocationBasedExporter implements InitializingBean
32      {
33          private Object proxy;
34  
35          public void afterPropertiesSet()
36          {
37              this.proxy = getProxyForService();
38          }
39  
40          public Object execute(RemoteInvocation invocation)
41          {
42              try
43              {
44                  Object value = invoke(invocation, proxy);
45                  return value;
46              }
47              catch (Throwable ex)
48              {
49                  return new RemoteInvocationResult(ex);
50              }
51          }
52      }
53  
54      public SpringRemoteInvokerComponent()
55      {
56          delegate = new Delegate();
57      }
58  
59      public void initialise() throws InitialisationException
60      {
61          if (serviceClass == null && serviceBean == null)
62          {
63              throw new InitialisationException(CoreMessages.propertiesNotSet("serviceClass or serviceBean"),
64                  this);
65          }
66          if (serviceInterface == null)
67          {
68              throw new InitialisationException(CoreMessages.propertiesNotSet("serviceInterface"), this);
69          }
70  
71          if (serviceClass != null)
72          {
73              Object service = null;
74              try
75              {
76                  service = ClassUtils.instanciateClass(serviceClass, (Object[]) null);
77              }
78              catch (Exception e)
79              {
80                  throw new InitialisationException(e, this);
81              }
82              delegate.setService(service);
83          }
84          else if (serviceBean != null)
85          {
86              delegate.setService(serviceBean);
87          }
88          delegate.setServiceInterface(serviceInterface);
89          delegate.setRegisterTraceInterceptor(registerTraceInterceptor);
90          if (remoteInvocationExecutor != null)
91          {
92              delegate.setRemoteInvocationExecutor(remoteInvocationExecutor);
93          }
94          delegate.afterPropertiesSet();
95      }
96  
97      public Class getServiceClass()
98      {
99          return serviceClass;
100     }
101 
102     public void setServiceClass(Class serviceClass)
103     {
104         this.serviceClass = serviceClass;
105     }
106 
107     public Object getServiceBean()
108     {
109         return serviceBean;
110     }
111 
112     public void setServiceBean(Object serviceBean)
113     {
114         this.serviceBean = serviceBean;
115     }
116 
117     public Class getServiceInterface()
118     {
119         return serviceInterface;
120     }
121 
122     public void setServiceInterface(Class serviceInterface)
123     {
124         this.serviceInterface = serviceInterface;
125     }
126 
127     public boolean isRegisterTraceInterceptor()
128     {
129         return registerTraceInterceptor;
130     }
131 
132     public void setRegisterTraceInterceptor(boolean registerTraceInterceptor)
133     {
134         this.registerTraceInterceptor = registerTraceInterceptor;
135     }
136 
137     public RemoteInvocationExecutor getRemoteInvocationExecutor()
138     {
139         return remoteInvocationExecutor;
140     }
141 
142     public void setRemoteInvocationExecutor(RemoteInvocationExecutor remoteInvocationExecutor)
143     {
144         this.remoteInvocationExecutor = remoteInvocationExecutor;
145     }
146 
147     public Object onCall(MuleEventContext eventContext) throws Exception
148     {
149         Object payload = eventContext.getMessage().getPayload();
150         RemoteInvocation ri = (RemoteInvocation) payload;
151         Object rval = delegate.execute(ri);
152         return rval;
153     }
154 }