Add warning to notify about forcing node16 (#2678)

* add warning

* fix tests

* aggregate to one warning

* fix linter

* fix comm

src/Runner.Common/Constants.cs

@@ -170,6 +170,8 @@ namespace GitHub.Runner.Common
             public static readonly string UnsupportedSummarySize = "$GITHUB_STEP_SUMMARY upload aborted, supports content up to a size of {0}k, got {1}k. For more information see: https://docs.github.com/actions/using-workflows/workflow-commands-for-github-actions#adding-a-markdown-summary";
             public static readonly string SummaryUploadError = "$GITHUB_STEP_SUMMARY upload aborted, an error occurred when uploading the summary. For more information see: https://docs.github.com/actions/using-workflows/workflow-commands-for-github-actions#adding-a-markdown-summary";
             public static readonly string Node12DetectedAfterEndOfLife = "Node.js 12 actions are deprecated. Please update the following actions to use Node.js 16: {0}. For more information see: https://github.blog/changelog/2022-09-22-github-actions-all-actions-will-begin-running-on-node16-instead-of-node12/.";
+            public static readonly string EnforcedNode12DetectedAfterEndOfLife = "The following actions uses node12 which is deprecated and will be forced to run on node16: {0}. For more info: https://github.blog/changelog/2023-06-13-github-actions-all-actions-will-run-on-node16-instead-of-node12-by-default/";
+            public static readonly string EnforcedNode12DetectedAfterEndOfLifeEnvVariable = "Node16ForceActionsWarnings";
         }
 
         public static class RunnerEvent

src/Runner.Worker/Handlers/HandlerFactory.cs

@@ -68,6 +68,28 @@ namespace GitHub.Runner.Worker.Handlers
                     bool isOptOut = isWorkflowOptOutSet ? StringUtil.ConvertToBoolean(workflowOptOut) : isLocalOptOut;
                     if (!isOptOut)
                     {
+                        var repoAction = action as Pipelines.RepositoryPathReference;
+                        if (repoAction != null)
+                        {
+                            var warningActions = new HashSet<string>();
+                            if (executionContext.Global.Variables.TryGetValue(Constants.Runner.EnforcedNode12DetectedAfterEndOfLifeEnvVariable, out var node16ForceWarnings))
+                            {
+                                warningActions = StringUtil.ConvertFromJson<HashSet<string>>(node16ForceWarnings);
+                            }
+
+                            var repoActionFullName = "";
+                            if (string.IsNullOrEmpty(repoAction.Name))
+                            {
+                                repoActionFullName = repoAction.Path; // local actions don't have a 'Name'
+                            }
+                            else
+                            {
+                                repoActionFullName = $"{repoAction.Name}/{repoAction.Path ?? string.Empty}".TrimEnd('/') + $"@{repoAction.Ref}";
+                            }
+
+                            warningActions.Add(repoActionFullName);
+                            executionContext.Global.Variables.Set("Node16ForceActionsWarnings", StringUtil.ConvertToJson(warningActions));
+                        }
                         nodeData.NodeVersion = "node16";
                     }
                 }

src/Runner.Worker/JobRunner.cs

@@ -348,6 +348,12 @@ namespace GitHub.Runner.Worker
                 jobContext.Warning(string.Format(Constants.Runner.Node12DetectedAfterEndOfLife, actions));
             }
 
+            if (jobContext.Global.Variables.TryGetValue(Constants.Runner.EnforcedNode12DetectedAfterEndOfLifeEnvVariable, out var node16ForceWarnings))
+            {
+                var actions = string.Join(", ", StringUtil.ConvertFromJson<HashSet<string>>(node16ForceWarnings));
+                jobContext.Warning(string.Format(Constants.Runner.EnforcedNode12DetectedAfterEndOfLife, actions));
+            }
+
             try
             {
                 await ShutdownQueue(throwOnFailure: true);