1 | |
|
2 | |
|
3 | |
|
4 | |
|
5 | |
|
6 | |
|
7 | |
|
8 | |
|
9 | |
|
10 | |
|
11 | |
package org.mule.example.errorhandler; |
12 | |
|
13 | |
import org.mule.api.MuleException; |
14 | |
import org.mule.example.errorhandler.handlers.DefaultHandler; |
15 | |
import org.mule.example.errorhandler.handlers.FatalHandler; |
16 | |
|
17 | |
import java.util.HashMap; |
18 | |
import java.util.Iterator; |
19 | |
import java.util.List; |
20 | |
import java.util.Map; |
21 | |
|
22 | |
import org.apache.commons.logging.Log; |
23 | |
import org.apache.commons.logging.LogFactory; |
24 | |
|
25 | |
|
26 | |
|
27 | |
|
28 | |
public class ErrorManager |
29 | |
{ |
30 | |
|
31 | 0 | private static final Log logger = LogFactory.getLog(ErrorManager.class); |
32 | |
|
33 | 0 | private Map handlers = new HashMap(); |
34 | 0 | private ExceptionHandler defaultHandler = null; |
35 | |
|
36 | |
public ErrorManager() |
37 | 0 | { |
38 | 0 | defaultHandler = new DefaultHandler(); |
39 | 0 | } |
40 | |
|
41 | |
public void setHandlers(List handlers) |
42 | |
{ |
43 | 0 | Iterator handlerIter = handlers.iterator(); |
44 | 0 | while (handlerIter.hasNext()) |
45 | |
{ |
46 | 0 | ExceptionHandler handler = (ExceptionHandler)handlerIter.next(); |
47 | 0 | this.addHandler(handler); |
48 | 0 | } |
49 | 0 | } |
50 | |
|
51 | |
public void addHandler(ExceptionHandler eh) |
52 | |
{ |
53 | 0 | for (Iterator i = eh.getRegisteredClasses(); i.hasNext();) |
54 | |
{ |
55 | 0 | handlers.put(i.next(), eh); |
56 | |
} |
57 | 0 | } |
58 | |
|
59 | |
public ExceptionHandler getHandler(Class exceptionClass) |
60 | |
{ |
61 | 0 | Object obj = handlers.get(exceptionClass); |
62 | 0 | if (obj == null) |
63 | |
{ |
64 | 0 | obj = handlers.get(Throwable.class); |
65 | |
} |
66 | |
|
67 | 0 | return (ExceptionHandler)obj; |
68 | |
} |
69 | |
|
70 | |
public void onException(ErrorMessage msg) throws MuleException |
71 | |
{ |
72 | 0 | Class eClass = null; |
73 | 0 | ExceptionHandler eh = null; |
74 | |
|
75 | |
try |
76 | |
{ |
77 | 0 | eClass = msg.getException().toException().getClass(); |
78 | 0 | eh = getHandler(eClass); |
79 | 0 | eh.onException(msg); |
80 | |
} |
81 | 0 | catch (Exception e) |
82 | |
{ |
83 | 0 | logger.error(e); |
84 | |
|
85 | 0 | if (eh instanceof DefaultHandler) |
86 | |
{ |
87 | 0 | logger.error(LocaleMessage.defaultFatalHandling(FatalHandler.class)); |
88 | 0 | handleFatal(e); |
89 | |
|
90 | |
} |
91 | 0 | else if (eh instanceof FatalHandler) |
92 | |
{ |
93 | 0 | logger.fatal(LocaleMessage.fatalHandling(e)); |
94 | |
} |
95 | |
else |
96 | |
{ |
97 | 0 | logger.error(LocaleMessage.defaultHandling(DefaultHandler.class, eh, e)); |
98 | 0 | handleDefault(msg, e); |
99 | |
} |
100 | 0 | } |
101 | 0 | } |
102 | |
|
103 | |
private void handleDefault(ErrorMessage msg, Throwable t) |
104 | |
{ |
105 | 0 | ErrorMessage nestedMsg = null; |
106 | |
|
107 | |
|
108 | |
try |
109 | |
{ |
110 | 0 | nestedMsg = new ErrorMessage(t); |
111 | |
} |
112 | 0 | catch (Exception e) |
113 | |
{ |
114 | 0 | logger.fatal(LocaleMessage.defaultException(e), e); |
115 | 0 | handleFatal(e); |
116 | 0 | } |
117 | |
try |
118 | |
{ |
119 | 0 | defaultHandler.onException(nestedMsg); |
120 | |
} |
121 | 0 | catch (HandlerException e) |
122 | |
{ |
123 | 0 | logger.fatal(LocaleMessage.defaultHandlerException(e), e); |
124 | 0 | handleFatal(e); |
125 | 0 | } |
126 | |
|
127 | 0 | } |
128 | |
|
129 | |
private void handleFatal(Throwable t) |
130 | |
{ |
131 | |
|
132 | |
|
133 | 0 | logger.fatal(LocaleMessage.fatalException(t), t); |
134 | 0 | } |
135 | |
} |