MonoRail/Castle.MonoRail.Framework/Extensions/ExceptionChaining/EmailHandler.cs

   1 // Copyright 2004-2008 Castle Project - http://www.castleproject.org/
   2 //
   3 // Licensed under the Apache License, Version 2.0 (the "License");
   4 // you may not use this file except in compliance with the License.
   5 // You may obtain a copy of the License at
   6 //
   7 //     http://www.apache.org/licenses/LICENSE-2.0
   8 //
   9 // Unless required by applicable law or agreed to in writing, software
  10 // distributed under the License is distributed on an "AS IS" BASIS,
  11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12 // See the License for the specific language governing permissions and
  13 // limitations under the License.
  14
  15 namespace Castle.MonoRail.Framework.Extensions.ExceptionChaining
  16 {
  17         using System;
  18         using System.Configuration;
  19         using Castle.Components.Common.EmailSender;
  20         using Castle.Core.Configuration;
  21
  22         /// <summary>
  23         /// A handle that sends the exception by email
  24         /// </summary>
  25         public class EmailHandler : AbstractExceptionHandler, IConfigurableHandler
  26         {
  27                 private String mailTo;
  28                 private String mailFrom = "donotreply@castleproject.org";
  29
  30                 /// <summary>
  31                 /// Implementors should check for known attributes and child nodes
  32                 /// within the <c>exceptionHandlerNode</c>
  33                 /// </summary>
  34                 /// <param name="exceptionHandlerNode">The Xml node
  35                 /// that represents this handler on the configuration file</param>
  36                 public void Configure(IConfiguration exceptionHandlerNode)
  37                 {
  38                         string mailToAtt = exceptionHandlerNode.Attributes["mailTo"];
  39
  40                         if (mailToAtt == null)
  41                         {
  42                                 String message = "'mailTo' is a required attribute " +
  43                                                  "for EmailHandler (part of ExceptionChaining extension)";
  44                                 throw new ConfigurationErrorsException(message);
  45                         }
  46
  47                         mailTo = mailToAtt;
  48
  49                         string mailFromAtt = exceptionHandlerNode.Attributes["mailFrom"];
  50
  51                         if (mailFromAtt != null)
  52                         {
  53                                 mailFrom = mailFromAtt;
  54                         }
  55                 }
  56
  57                 /// <summary>
  58                 /// Implementors should perform the action
  59                 /// on the exception. Note that the exception
  60                 /// is available in <see cref="IEngineContext.LastException"/>
  61                 /// </summary>
  62                 /// <param name="context"></param>
  63                 public override void Process(IEngineContext context)
  64                 {
  65                         IEmailSender emailSender = (IEmailSender) context.GetService(typeof(IEmailSender));
  66
  67                         String message = BuildStandardMessage(context);
  68
  69                         try
  70                         {
  71                                 emailSender.Send(mailFrom, mailTo,
  72                                                  "MonoRail Exception: " + context.LastException.GetType().Name, message);
  73                         }
  74                         catch(Exception)
  75                         {
  76                                 // We ignore errors during send
  77                         }
  78
  79                         InvokeNext(context);
  80                 }
  81         }
  82 }