private static void InternalConfigure()

in src/log4net/Config/XmlConfigurator.cs [385:442]
47 lines of code
7 McCabe index (conditional complexity)

  private static void InternalConfigure(ILoggerRepository repository, FileInfo? configFile)
  {
    LogLog.Debug(_declaringType, $"configuring repository [{repository.Name}] using file [{configFile}]");

    if (configFile is null)
    {
      LogLog.Error(_declaringType, "Configure called with null 'configFile' parameter");
    }
    else
    {
      // Have to use File.Exists() rather than configFile.Exists()
      // because configFile.Exists() caches the value, not what we want.
      if (File.Exists(configFile.FullName))
      {
        // Open the file for reading
        FileStream? fs = null;

        // Try hard to open the file
        for (int retry = 5; --retry >= 0;)
        {
          try
          {
            fs = configFile.Open(FileMode.Open, FileAccess.Read, FileShare.Read);
            break;
          }
          catch (IOException ex)
          {
            if (retry == 0)
            {
              LogLog.Error(_declaringType, $"Failed to open XML config file [{configFile.Name}]", ex);

              // The stream cannot be valid
              fs = null;
            }
            Thread.Sleep(250);
          }
        }

        if (fs is not null)
        {
          try
          {
            // Load the configuration from the stream
            InternalConfigure(repository, fs);
          }
          finally
          {
            // Force the file closed whatever happens
            fs.Dispose();
          }
        }
      }
      else
      {
        LogLog.Debug(_declaringType, "config file [" + configFile.FullName + "] not found. Configuration unchanged.");
      }
    }
  }