keychain/TrustedPeersHelper/CuttlefishErrors.swift

   1 import Foundation
   2
   3 let CuttlefishErrorDomain = "CuttlefishError"
   4 enum CuttlefishErrorCode: Int {
   5     case establishFailed = 1001
   6     case invalidChangeToken = 1005
   7     case resultGraphNotFullyReachable = 1007
   8     case changeTokenExpired = 1018
   9     case transactionalFailure = 1019
  10     case retryableServerFailure = 1021
  11     case keyHierarchyAlreadyExists = 1033
  12 }
  13
  14 struct CuttlefishErrorMatcher {
  15     let code: CuttlefishErrorCode
  16 }
  17
  18 // Use a 'pattern match operator' to make pretty case statements matching Cuttlefish errors
  19 func ~=(pattern: CuttlefishErrorMatcher, value: Error?) -> Bool {
  20     guard let value = value else {
  21         return false
  22     }
  23
  24     let error = value as NSError
  25
  26     guard let underlyingError = error.userInfo[NSUnderlyingErrorKey] as? NSError else {
  27         return false
  28     }
  29
  30     return error.domain == CKInternalErrorDomain && error.code == CKInternalErrorCode.errorInternalPluginError.rawValue &&
  31         underlyingError.domain == CuttlefishErrorDomain && underlyingError.code == pattern.code.rawValue
  32 }