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package org.mule.example.errorhandler; |
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import org.mule.api.MuleException; |
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import org.mule.example.errorhandler.handlers.DefaultHandler; |
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import org.mule.example.errorhandler.handlers.FatalHandler; |
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import java.util.HashMap; |
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import java.util.Iterator; |
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import java.util.List; |
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import java.util.Map; |
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import org.apache.commons.logging.Log; |
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import org.apache.commons.logging.LogFactory; |
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public class ErrorManager |
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{ |
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27 | 0 | private static final Log logger = LogFactory.getLog(ErrorManager.class); |
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29 | 0 | private Map handlers = new HashMap(); |
30 | 0 | private ExceptionHandler defaultHandler = null; |
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public ErrorManager() |
33 | 0 | { |
34 | 0 | defaultHandler = new DefaultHandler(); |
35 | 0 | } |
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public void setHandlers(List handlers) |
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{ |
39 | 0 | Iterator handlerIter = handlers.iterator(); |
40 | 0 | while (handlerIter.hasNext()) |
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{ |
42 | 0 | ExceptionHandler handler = (ExceptionHandler)handlerIter.next(); |
43 | 0 | this.addHandler(handler); |
44 | 0 | } |
45 | 0 | } |
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public void addHandler(ExceptionHandler eh) |
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{ |
49 | 0 | for (Iterator i = eh.getRegisteredClasses(); i.hasNext();) |
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{ |
51 | 0 | handlers.put(i.next(), eh); |
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} |
53 | 0 | } |
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public ExceptionHandler getHandler(Class exceptionClass) |
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{ |
57 | 0 | Object obj = handlers.get(exceptionClass); |
58 | 0 | if (obj == null) |
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{ |
60 | 0 | obj = handlers.get(Throwable.class); |
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} |
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63 | 0 | return (ExceptionHandler)obj; |
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} |
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public void onException(ErrorMessage msg) throws MuleException |
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{ |
68 | 0 | Class eClass = null; |
69 | 0 | ExceptionHandler eh = null; |
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try |
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{ |
73 | 0 | eClass = msg.getException().toException().getClass(); |
74 | 0 | eh = getHandler(eClass); |
75 | 0 | eh.onException(msg); |
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} |
77 | 0 | catch (Exception e) |
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{ |
79 | 0 | logger.error(e); |
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81 | 0 | if (eh instanceof DefaultHandler) |
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{ |
83 | 0 | logger.error(LocaleMessage.defaultFatalHandling(FatalHandler.class)); |
84 | 0 | handleFatal(e); |
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} |
87 | 0 | else if (eh instanceof FatalHandler) |
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{ |
89 | 0 | logger.fatal(LocaleMessage.fatalHandling(e)); |
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} |
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else |
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{ |
93 | 0 | logger.error(LocaleMessage.defaultHandling(DefaultHandler.class, eh, e)); |
94 | 0 | handleDefault(msg, e); |
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} |
96 | 0 | } |
97 | 0 | } |
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private void handleDefault(ErrorMessage msg, Throwable t) |
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{ |
101 | 0 | ErrorMessage nestedMsg = null; |
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try |
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{ |
106 | 0 | nestedMsg = new ErrorMessage(t); |
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} |
108 | 0 | catch (Exception e) |
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{ |
110 | 0 | logger.fatal(LocaleMessage.defaultException(e), e); |
111 | 0 | handleFatal(e); |
112 | 0 | } |
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try |
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{ |
115 | 0 | defaultHandler.onException(nestedMsg); |
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} |
117 | 0 | catch (HandlerException e) |
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{ |
119 | 0 | logger.fatal(LocaleMessage.defaultHandlerException(e), e); |
120 | 0 | handleFatal(e); |
121 | 0 | } |
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123 | 0 | } |
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private void handleFatal(Throwable t) |
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{ |
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129 | 0 | logger.fatal(LocaleMessage.fatalException(t), t); |
130 | 0 | } |
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} |