using System; using System.IO; using System.Security; namespace Relativity.DataExchange.Io { internal static class RetryExceptionHelper { public static Func<Exception, bool> CreateRetryPredicate(RetryOptions options) { return (Exception exception) => IsRetryable(exception, options); } public static bool IsRetryable(Exception exception, RetryOptions options) { if (exception == null) throw new ArgumentNullException("exception"); if (exception is UnauthorizedAccessException || exception is SecurityException) return options.HasFlag(RetryOptions.Permissions); if (exception is FileInfoInvalidPathException || ExceptionHelper.IsIllegalCharactersInPathException(exception)) return false; if (exception is FileNotFoundException) return options.HasFlag(RetryOptions.FileNotFound); if (exception is DirectoryNotFoundException) return options.HasFlag(RetryOptions.DirectoryNotFound); if (exception is PathTooLongException) return false; if (ExceptionHelper.IsOutOfDiskSpaceException(exception)) return options.HasFlag(RetryOptions.DiskFull); if (exception is IOException) return options.HasFlag(RetryOptions.Io); return false; } } }