Stop using the BAR token in darc (#4415)

Token is no longer supported
(#4312)

`darc` will
- stop reading/storing the BAR token from the local settings
- stop using it if it's supplied as an argument (but not fail yet)
- warn if it's supplied
- stop giving a warning when the user has not called `darc authenticate`
yet

src/Microsoft.DotNet.Darc/Darc/Helpers/LocalSettings.cs

@@ -2,6 +2,7 @@
 // The .NET Foundation licenses this file to you under the MIT license.
 
 using System;
+using System.IO;
 using Microsoft.DotNet.Darc.Options;
 using Microsoft.DotNet.ProductConstructionService.Client;
 using Microsoft.Extensions.Logging;
@@ -14,11 +15,6 @@ namespace Microsoft.DotNet.Darc.Helpers;
 /// </summary>
 internal class LocalSettings
 {
-    public string BuildAssetRegistryToken { get; set; }
-
-    // Old way of storing the settings had the password and not the token so we keep both to deserialize these correctly.
-    public string BuildAssetRegistryPassword { get; set; }
-
     public string GitHubToken { get; set; }
 
     public string AzureDevOpsToken { get; set; }
@@ -55,6 +51,11 @@ public static LocalSettings GetSettings(ICommandLineOptions options, ILogger log
         {
             localSettings = LoadSettingsFile();
         }
+        catch (FileNotFoundException)
+        {
+            // User has not called darc authenticate yet
+            // Not a problem of it self unless the operation they run needs the GitHub token
+        }
         catch (Exception e)
         {
             if (!options.IsCi && options.OutputFormat != DarcOutputType.json)
@@ -71,15 +72,8 @@ static string PreferOptionToSetting(string option, string localSetting)
         // Prefer the command line options over the settings file
         localSettings ??= new LocalSettings();
 
-        if (string.IsNullOrEmpty(localSettings.BuildAssetRegistryToken))
-        {
-            // Old way of storing the settings had the password and not the token
-            localSettings.BuildAssetRegistryToken = localSettings.BuildAssetRegistryPassword;
-        }
-
         localSettings.AzureDevOpsToken = PreferOptionToSetting(options.AzureDevOpsPat, localSettings.AzureDevOpsToken);
         localSettings.GitHubToken = PreferOptionToSetting(options.GitHubPat, localSettings.GitHubToken);
-        localSettings.BuildAssetRegistryToken = PreferOptionToSetting(options.BuildAssetRegistryToken, localSettings.BuildAssetRegistryToken);
         localSettings.BuildAssetRegistryBaseUri = options.BuildAssetRegistryBaseUri
             ?? localSettings.BuildAssetRegistryBaseUri
             ?? ProductConstructionServiceApiOptions.ProductionMaestroUri;

src/Microsoft.DotNet.Darc/Darc/Models/PopUps/AuthenticateEditorPopUp.cs

@@ -13,7 +13,6 @@ internal class AuthenticateEditorPopUp : EditorPopUp
 {
     private readonly ILogger _logger;
 
-    private const string BarPasswordElement = "bar_password";
     private const string GithubTokenElement = "github_token";
     private const string AzureDevOpsTokenElement = "azure_devops_token";
     private const string BarBaseUriElement = "build_asset_registry_base_uri";
@@ -40,12 +39,6 @@ public AuthenticateEditorPopUp(string path, ILogger logger)
         // Initialize line contents.
         Contents =
         [
-            new("[DEPRECATED]", isComment: true),
-            new("BAR tokens (formerly created at https://maestro.dot.net/Account/Tokens) are now deprecated.", isComment: true),
-            new("Interactive sign-in through a security group is now enabled.", isComment: true),
-            new("See https://github.com/dotnet/arcade/blob/main/Documentation/Darc.md#setting-up-your-darc-client for more information.", isComment: true),
-            new($"{BarPasswordElement}={GetCurrentSettingForDisplay(settings.BuildAssetRegistryToken, string.Empty, true)}"),
-            new(string.Empty),
             new("Create new GitHub personal access tokens at https://github.com/settings/tokens (no scopes needed but needs SSO enabled on the PAT)", isComment: true),
             new($"{GithubTokenElement}={GetCurrentSettingForDisplay(settings.GitHubToken, string.Empty, true)}"),
             new(string.Empty),
@@ -72,15 +65,6 @@ public override Task<int> ProcessContents(IList<Line> contents)
 
             switch (keyValue[0])
             {
-                case BarPasswordElement:
-                    settings.BuildAssetRegistryToken = ParseSetting(keyValue[1], settings.BuildAssetRegistryToken, true);
-
-                    if (!string.IsNullOrEmpty(settings.BuildAssetRegistryToken))
-                    {
-                        _logger.LogWarning("BAR password is being deprecated and will stop working soon.");
-                    }
-
-                    break;
                 case GithubTokenElement:
                     settings.GitHubToken = ParseSetting(keyValue[1], settings.GitHubToken, true);
                     break;

src/Microsoft.DotNet.Darc/Darc/Options/CommandLineOptions.cs

@@ -28,9 +28,19 @@ public override Operation GetOperation(ServiceProvider sp)
 public abstract class CommandLineOptions : ICommandLineOptions
 {
     [Option('p', "password",
-        HelpText = "Token used to authenticate to BAR. If it or the federated token are omitted, auth falls back to Azure CLI or an interactive browser login flow.")]
+        HelpText = "[DEPRECATED] Token used to authenticate to BAR. Please use Azure CLI or an interactive browser login flow.")]
     [RedactFromLogging]
-    public string BuildAssetRegistryToken { get; set; }
+    public string BuildAssetRegistryToken
+    {
+        get => null;
+        set
+        {
+            if (!string.IsNullOrEmpty(value))
+            {
+                Console.WriteLine("The --password option is deprecated. Please use Azure CLI or an interactive browser login flow.");
+            }
+        }
+    }
 
     [Option("github-pat", HelpText = "Token used to authenticate GitHub.")]
     [RedactFromLogging]
@@ -106,7 +116,6 @@ public void InitializeFromSettings(ILogger logger)
         AzureDevOpsPat ??= localSettings.AzureDevOpsToken;
         GitHubPat ??= localSettings.GitHubToken;
         BuildAssetRegistryBaseUri ??= localSettings.BuildAssetRegistryBaseUri;
-        BuildAssetRegistryToken ??= localSettings.BuildAssetRegistryToken;
     }
 
     /// <summary>