update source to Ceph Pacific 16.2.2

[ceph.git] / ceph / src / jaegertracing / thrift / lib / swift / Sources / TError.swift

diff --git a/ceph/src/jaegertracing/thrift/lib/swift/Sources/TError.swift b/ceph/src/jaegertracing/thrift/lib/swift/Sources/TError.swift
new file mode 100644 (file)
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@@ -0,0 +1,77 @@
+/*
+* Licensed to the Apache Software Foundation (ASF) under one
+* or more contributor license agreements. See the NOTICE file
+* distributed with this work for additional information
+* regarding copyright ownership. The ASF licenses this file
+* to you under the Apache License, Version 2.0 (the
+* "License"); you may not use this file except in compliance
+* with the License. You may obtain a copy of the License at
+*
+*   http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing,
+* software distributed under the License is distributed on an
+* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+* KIND, either express or implied. See the License for the
+* specific language governing permissions and limitations
+* under the License.
+*/
+
+
+/// TErrorCode
+///
+/// Protocol for TError conformers' enum's to conform to.
+/// Generic Int Thrift error code to allow error cases to have
+/// associated values.
+public protocol TErrorCode : CustomStringConvertible {
+  var thriftErrorCode: Int { get }
+}
+
+/// TError
+///
+/// Base protocol for all Thrift Error(Exception) types to conform to
+public protocol TError : Error, CustomStringConvertible {
+
+  /// Enum for error cases.  Can be typealiased to any conforming enum
+  /// or defined nested.
+  associatedtype Code: TErrorCode
+  
+  /// Error Case, value from internal enum
+  var error: Code { get set }
+  
+  /// Optional additional message
+  var message: String? { get set }
+  
+  /// Default error case for the error type, used for generic init()
+  static var defaultCase: Code { get }
+  
+  init()
+}
+
+extension TError {
+  /// Human readable description of error. Default provided for you in the
+  /// format \(Self.self): \(error.errorDescription) \n message
+  /// eg:
+  ///
+  ///     TApplicationError (1): Invalid Message Type
+  ///     An unknown Error has occured.
+  public var description: String {
+    var out = "\(Self.self) (\(error.thriftErrorCode)): " + error.description + "\n"
+    if let message = message {
+      out += "Message: \(message)"
+    }
+    return out
+  }
+
+  /// Simple default Initializer for TError's
+  ///
+  /// - parameter error:   ErrorCode value.  Default: defaultCase
+  /// - parameter message: Custom message with error.  Optional
+  ///
+  /// - returns: <#return value description#>
+  public init(error: Code, message: String? = nil) {
+    self.init()
+    self.error = error
+    self.message = message
+  }
+}