2013-04-26 49 views
0

失敗之後,我們以點帶面的.N​​et正確的文件夾裝入從組件實現的AssemblyResolve事件以下知識庫文章的例子:http://support.microsoft.com/kb/837908裝載程序集隨機

這是我們的當前實現:

public static class AssemblyLoader 
{ 
    /// <summary> 
    /// A custom AssemblyResolver that will search for missing assemblies in the root and subfolders of the executing assembly 
    /// </summary> 
    /// <param name="sender"></param> 
    /// <param name="args"></param> 
    /// <returns></returns> 
    public static System.Reflection.Assembly CurrentDomain_AssemblyResolve(object sender, ResolveEventArgs args) 
    { 
     string assemblyPath = string.Empty; 
     string assemblyFileName = string.Empty; 

     try 
     { 
      // This handler is called only when the common language runtime tries to bind to the assembly and fails. 
      string rootProbingPath = Path.GetDirectoryName(Assembly.GetEntryAssembly().Location); 


      // Loop through the referenced assembly names. 
      assemblyFileName = args.Name.Substring(0, args.Name.IndexOf(",")) + ".dll"; 

      // Search for the filename in the root and subfolders of the rootProbingPath 
      string[] matchingAssemblies = Directory.GetFiles(rootProbingPath, assemblyFileName, SearchOption.AllDirectories); 

      // If a match is found, awesomeness was achieved! 
      if (matchingAssemblies.Length > 0) 
       assemblyPath = matchingAssemblies[0]; 

      // Throw a clear exception when the assembly could not be found. 
      if (string.IsNullOrEmpty(assemblyPath)) 
       throw new FileNotFoundException(string.Format("AssemblyLoader: Could not find assembly '{0}' in '{1}' or its subfolders.", assemblyFileName, rootProbingPath)); 

      Console.WriteLine(string.Format("[" + DateTime.Now.ToString() + "] AssemblyLoader: Assembly '{0}' found at '{1}'", assemblyFileName, assemblyPath)); 

      // Load the assembly from the specified path. 
      return Assembly.LoadFrom(assemblyPath, AppDomain.CurrentDomain.Evidence); 
     } 
     catch (Exception ex) 
     { 
      throw new Exception(string.Format("[" + DateTime.Now.ToString() + "] The assemblyloader could not load the assembly '{0}' from path '{1}': " + ex.Message, assemblyFileName, assemblyPath), ex); 
     } 
    } 
} 

我們在所有的往往並行運行,並且大多采用相同的組件就是批程序使用。

定期間歇會崩潰離開下列線索:

[26/04/2013 12時35分01秒] AssemblyLoader:裝配 'COMPANY.DistributieOrderFacade.dll' 在 「C發現:\ COMPANY_Batch \ MDS \可執行\ MDS \ FACADE \ COMPANY.DistributieOrderFacade.dll '

[26/04/2013 12時35分01秒] AssemblyLoader:裝配 'COMPANY.DOCUMENTCENTERDOCS.dll' 在 發現' C:\ COMPANY_Batch \ MDS \ Executables \ MDS \ CLIENT \ COMPANY.DOCUMENTCENTERDOCS.dll'

26/04/2013 12時35分01秒:在 隊列創建COMPANYDocument ...:\ rug.adroot \ dfsroot \ MDS \ DATA \ queue_new \ 26/04/2013 12時35分01秒

無法加載文件或程序集'COMPANY.DistributieOrderBRDA, 版本= 1.0.0.0,Culture = neutral,PublicKeyToken = null'或其依賴關係之一 。一般例外(來自HRESULT的例外:0x80131500)

錯誤中的程序集確實位於AssemblyLoader搜索的其中一個文件夾中。如果我再次運行該程序,它會成功。

我試着看看在兩個控制檯應用程序中使用這個程序集加載器,並且同時訪問相同的DLL,但是這似乎沒有問題。

我還應該提到,這只是來自其中一個批次的日誌。還有其他的,它很少是沒有被加載的相同的程序集。

我不知道從哪裏開始尋找解決方案。

回答

0

這是由於更新腳本在每批運行之前更新了dll的。當兩個批處理同時運行,並且有一個需要更新的dll時,dll的鎖正在導致問題。

我們已經刪除了這個腳本一個星期了,並且還沒有看到任何問題。所以我們的結論是,這是問題所在。