MSAL encrypted file system cache (#1945)

src/Microsoft.SqlTools.Authentication/Utility/AuthenticatorConfiguration.cs

@@ -0,0 +1,41 @@
+//
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+//
+
+namespace Microsoft.SqlTools.Authentication.Utility
+{
+    /// <summary>
+    /// Configuration used by <see cref="Authenticator"/> to perform AAD authentication using MSAL.NET
+    /// </summary>
+    public class AuthenticatorConfiguration
+    {
+        /// <summary>
+        /// Application Client ID to be used.
+        /// </summary>
+        public string AppClientId { get; set; } 
+
+        /// <summary>
+        /// Application name used for public client application instantiation.
+        /// </summary>
+        public string AppName { get; set; }
+
+        /// <summary>
+        /// Cache folder path, to be used by MSAL.NET to store encrypted token cache.
+        /// </summary>
+        public string CacheFolderPath { get; set; }
+
+        /// <summary>
+        /// File name to be used for token storage.
+        /// Full path of file: <see cref="CacheFolderPath"/> \ <see cref="CacheFileName"/>
+        /// </summary>
+        public string CacheFileName { get; set; }
+
+        public AuthenticatorConfiguration(string appClientId, string appName, string cacheFolderPath, string cacheFileName) {
+            AppClientId = appClientId;
+            AppName = appName;
+            CacheFolderPath = cacheFolderPath;
+            CacheFileName = cacheFileName;
+        }
+    }
+}