using Relativity.Services.Exceptions; using System; using System.Collections.Generic; using System.Diagnostics.CodeAnalysis; using System.IO; using System.Text.RegularExpressions; namespace Relativity.DataExchange.Service { internal static class ObjectManagerExceptionHelper { public const int MaxInnerExceptionDepth = 16; public static bool IsNonFatalError(Exception exception) { if (exception == null) throw new ArgumentNullException("exception"); if (!IsInvalidParametersError(exception) && !IsServerSideFileNotFoundError(exception) && !IsServerSideFilePermissionsError(exception)) return IsServerSideDirectoryNotFoundError(exception); return true; } public static bool IsInvalidParametersError(Exception exception) { if (exception == null) return false; if (!(exception is ValidationException)) return IsMatch(exception, "^Read Failed$"); return true; } public static bool IsServerSideDirectoryNotFoundError(Exception exception) { if (exception == null) return false; return TrySearchServiceExceptionErrorDetails(exception, (IDictionary<string, object> errorDetailsDictionary) => IsInnerExceptionClassName(errorDetailsDictionary, typeof(DirectoryNotFoundException))); } public static bool IsServerSideFileNotFoundError(Exception exception) { if (exception == null) return false; return TrySearchServiceExceptionErrorDetails(exception, (IDictionary<string, object> errorDetailsDictionary) => IsInnerExceptionClassName(errorDetailsDictionary, typeof(FileNotFoundException))); } public static bool IsServerSideFilePermissionsError(Exception exception) { if (exception == null) return false; return TrySearchServiceExceptionErrorDetails(exception, (IDictionary<string, object> errorDetailsDictionary) => IsInnerExceptionClassName(errorDetailsDictionary, typeof(UnauthorizedAccessException))); } private static bool IsMatch(Exception exception, string pattern) { if (string.IsNullOrWhiteSpace(exception.Message)) return false; return Regex.IsMatch(exception.Message, pattern, RegexOptions.IgnoreCase); } [SuppressMessage("Microsoft.Design", "CA1031:DoNotCatchGeneralExceptionTypes", Justification = "By design, this method will never fail.")] private static bool TrySearchServiceExceptionErrorDetails(Exception exception, Func<IDictionary<string, object>, bool> innerExceptionFunc) { try { ServiceException val = exception as ServiceException; if (val != null) { IDictionary<string, object> dictionary = (IDictionary<string, object>)val.get_ErrorDetails(); int num = 0; while (dictionary != null && num < 16) { num++; if (innerExceptionFunc(dictionary)) return true; if (!dictionary.ContainsKey("InnerException")) break; dictionary = (dictionary["InnerException"] as IDictionary<string, object>); } return false; } return false; } catch { return false; } } private static bool IsInnerExceptionClassName(IDictionary<string, object> errorDetailsDictionary, Type expectedType) { if (!errorDetailsDictionary.ContainsKey("ClassName")) return false; string stringValue = errorDetailsDictionary.GetStringValue("ClassName", string.Empty); if (!string.IsNullOrWhiteSpace(stringValue)) return stringValue.IndexOf(expectedType.Name, StringComparison.OrdinalIgnoreCase) >= 0; return false; } } }