Compare updated workflow parser for ActionManifestManager (#4111)

src/Runner.Common/Constants.cs

@@ -172,7 +172,7 @@ namespace GitHub.Runner.Common
                 public static readonly string ContainerActionRunnerTemp = "actions_container_action_runner_temp";
                 public static readonly string SnapshotPreflightHostedRunnerCheck = "actions_snapshot_preflight_hosted_runner_check";
                 public static readonly string SnapshotPreflightImageGenPoolCheck = "actions_snapshot_preflight_image_gen_pool_check";
-                public static readonly string CompareTemplateEvaluator = "actions_runner_compare_template_evaluator";
+                public static readonly string CompareWorkflowParser = "actions_runner_compare_workflow_parser";
             }
             
             // Node version migration related constants

src/Runner.Worker/ActionManager.cs

@@ -378,7 +378,7 @@ namespace GitHub.Runner.Worker
                 string dockerFileLowerCase = Path.Combine(actionDirectory, "dockerfile");
                 if (File.Exists(manifestFile) || File.Exists(manifestFileYaml))
                 {
-                    var manifestManager = HostContext.GetService<IActionManifestManager>();
+                    var manifestManager = HostContext.GetService<IActionManifestManagerWrapper>();
                     if (File.Exists(manifestFile))
                     {
                         definition.Data = manifestManager.Load(executionContext, manifestFile);
@@ -964,7 +964,7 @@ namespace GitHub.Runner.Worker
             if (File.Exists(actionManifest) || File.Exists(actionManifestYaml))
             {
                 executionContext.Debug($"action.yml for action: '{actionManifest}'.");
-                var manifestManager = HostContext.GetService<IActionManifestManager>();
+                var manifestManager = HostContext.GetService<IActionManifestManagerWrapper>();
                 ActionDefinitionData actionDefinitionData = null;
                 if (File.Exists(actionManifest))
                 {

src/Runner.Worker/ActionManifestManager.cs

@@ -2,29 +2,29 @@
 using System.Collections.Generic;
 using System.IO;
 using System.Threading;
+using System.Reflection;
+using System.Linq;
 using GitHub.Runner.Common;
 using GitHub.Runner.Sdk;
-using System.Reflection;
-using GitHub.DistributedTask.Pipelines.ObjectTemplating;
-using GitHub.DistributedTask.ObjectTemplating.Schema;
-using GitHub.DistributedTask.ObjectTemplating;
-using GitHub.DistributedTask.ObjectTemplating.Tokens;
-using GitHub.DistributedTask.Pipelines.ContextData;
-using System.Linq;
-using Pipelines = GitHub.DistributedTask.Pipelines;
+using GitHub.Actions.WorkflowParser;
+using GitHub.Actions.WorkflowParser.Conversion;
+using GitHub.Actions.WorkflowParser.ObjectTemplating;
+using GitHub.Actions.WorkflowParser.ObjectTemplating.Schema;
+using GitHub.Actions.WorkflowParser.ObjectTemplating.Tokens;
+using GitHub.Actions.Expressions.Data;
 
 namespace GitHub.Runner.Worker
 {
     [ServiceLocator(Default = typeof(ActionManifestManager))]
     public interface IActionManifestManager : IRunnerService
     {
-        ActionDefinitionData Load(IExecutionContext executionContext, string manifestFile);
+        public ActionDefinitionDataNew Load(IExecutionContext executionContext, string manifestFile);
 
-        DictionaryContextData EvaluateCompositeOutputs(IExecutionContext executionContext, TemplateToken token, IDictionary<string, PipelineContextData> extraExpressionValues);
+        DictionaryExpressionData EvaluateCompositeOutputs(IExecutionContext executionContext, TemplateToken token, IDictionary<string, ExpressionData> extraExpressionValues);
 
-        List<string> EvaluateContainerArguments(IExecutionContext executionContext, SequenceToken token, IDictionary<string, PipelineContextData> extraExpressionValues);
+        List<string> EvaluateContainerArguments(IExecutionContext executionContext, SequenceToken token, IDictionary<string, ExpressionData> extraExpressionValues);
 
-        Dictionary<string, string> EvaluateContainerEnvironment(IExecutionContext executionContext, MappingToken token, IDictionary<string, PipelineContextData> extraExpressionValues);
+        Dictionary<string, string> EvaluateContainerEnvironment(IExecutionContext executionContext, MappingToken token, IDictionary<string, ExpressionData> extraExpressionValues);
 
         string EvaluateDefaultInput(IExecutionContext executionContext, string inputName, TemplateToken token);
     }
@@ -50,10 +50,10 @@ namespace GitHub.Runner.Worker
             Trace.Info($"Load schema file with definitions: {StringUtil.ConvertToJson(_actionManifestSchema.Definitions.Keys)}");
         }
 
-        public ActionDefinitionData Load(IExecutionContext executionContext, string manifestFile)
+        public ActionDefinitionDataNew Load(IExecutionContext executionContext, string manifestFile)
         {
             var templateContext = CreateTemplateContext(executionContext);
-            ActionDefinitionData actionDefinition = new();
+            ActionDefinitionDataNew actionDefinition = new();
 
             // Clean up file name real quick
             // Instead of using Regex which can be computationally expensive, 
@@ -160,21 +160,21 @@ namespace GitHub.Runner.Worker
             return actionDefinition;
         }
 
-        public DictionaryContextData EvaluateCompositeOutputs(
+        public DictionaryExpressionData EvaluateCompositeOutputs(
             IExecutionContext executionContext,
             TemplateToken token,
-            IDictionary<string, PipelineContextData> extraExpressionValues)
+            IDictionary<string, ExpressionData> extraExpressionValues)
         {
-            var result = default(DictionaryContextData);
+            DictionaryExpressionData result = null;
 
             if (token != null)
             {
                 var templateContext = CreateTemplateContext(executionContext, extraExpressionValues);
                 try
                 {
-                    token = TemplateEvaluator.Evaluate(templateContext, "outputs", token, 0, null, omitHeader: true);
+                    token = TemplateEvaluator.Evaluate(templateContext, "outputs", token, 0, null);
                     templateContext.Errors.Check();
-                    result = token.ToContextData().AssertDictionary("composite outputs");
+                    result = token.ToExpressionData().AssertDictionary("composite outputs");
                 }
                 catch (Exception ex) when (!(ex is TemplateValidationException))
                 {
@@ -184,13 +184,13 @@ namespace GitHub.Runner.Worker
                 templateContext.Errors.Check();
             }
 
-            return result ?? new DictionaryContextData();
+            return result ?? new DictionaryExpressionData();
         }
 
         public List<string> EvaluateContainerArguments(
             IExecutionContext executionContext,
             SequenceToken token,
-            IDictionary<string, PipelineContextData> extraExpressionValues)
+            IDictionary<string, ExpressionData> extraExpressionValues)
         {
             var result = new List<string>();
 
@@ -199,7 +199,7 @@ namespace GitHub.Runner.Worker
                 var templateContext = CreateTemplateContext(executionContext, extraExpressionValues);
                 try
                 {
-                    var evaluateResult = TemplateEvaluator.Evaluate(templateContext, "container-runs-args", token, 0, null, omitHeader: true);
+                    var evaluateResult = TemplateEvaluator.Evaluate(templateContext, "container-runs-args", token, 0, null);
                     templateContext.Errors.Check();
 
                     Trace.Info($"Arguments evaluate result: {StringUtil.ConvertToJson(evaluateResult)}");
@@ -229,7 +229,7 @@ namespace GitHub.Runner.Worker
         public Dictionary<string, string> EvaluateContainerEnvironment(
             IExecutionContext executionContext,
             MappingToken token,
-            IDictionary<string, PipelineContextData> extraExpressionValues)
+            IDictionary<string, ExpressionData> extraExpressionValues)
         {
             var result = new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase);
 
@@ -238,7 +238,7 @@ namespace GitHub.Runner.Worker
                 var templateContext = CreateTemplateContext(executionContext, extraExpressionValues);
                 try
                 {
-                    var evaluateResult = TemplateEvaluator.Evaluate(templateContext, "container-runs-env", token, 0, null, omitHeader: true);
+                    var evaluateResult = TemplateEvaluator.Evaluate(templateContext, "container-runs-env", token, 0, null);
                     templateContext.Errors.Check();
 
                     Trace.Info($"Environments evaluate result: {StringUtil.ConvertToJson(evaluateResult)}");
@@ -281,7 +281,7 @@ namespace GitHub.Runner.Worker
                 var templateContext = CreateTemplateContext(executionContext);
                 try
                 {
-                    var evaluateResult = TemplateEvaluator.Evaluate(templateContext, "input-default-context", token, 0, null, omitHeader: true);
+                    var evaluateResult = TemplateEvaluator.Evaluate(templateContext, "input-default-context", token, 0, null);
                     templateContext.Errors.Check();
 
                     Trace.Info($"Input '{inputName}': default value evaluate result: {StringUtil.ConvertToJson(evaluateResult)}");
@@ -303,7 +303,7 @@ namespace GitHub.Runner.Worker
 
         private TemplateContext CreateTemplateContext(
             IExecutionContext executionContext,
-            IDictionary<string, PipelineContextData> extraExpressionValues = null)
+            IDictionary<string, ExpressionData> extraExpressionValues = null)
         {
             var result = new TemplateContext
             {
@@ -314,13 +314,17 @@ namespace GitHub.Runner.Worker
                     maxEvents: 1000000,
                     maxBytes: 10 * 1024 * 1024),
                 Schema = _actionManifestSchema,
-                TraceWriter = executionContext.ToTemplateTraceWriter(),
+                // TODO: Switch to real tracewriter for cutover
+                TraceWriter = new GitHub.Actions.WorkflowParser.ObjectTemplating.EmptyTraceWriter(),
             };
 
             // Expression values from execution context
             foreach (var pair in executionContext.ExpressionValues)
             {
-                result.ExpressionValues[pair.Key] = pair.Value;
+                // Convert old PipelineContextData to new ExpressionData
+                var json = StringUtil.ConvertToJson(pair.Value, Newtonsoft.Json.Formatting.None);
+                var newValue = StringUtil.ConvertFromJson<GitHub.Actions.Expressions.Data.ExpressionData>(json);
+                result.ExpressionValues[pair.Key] = newValue;
             }
 
             // Extra expression values
@@ -332,10 +336,19 @@ namespace GitHub.Runner.Worker
                 }
             }
 
-            // Expression functions from execution context
-            foreach (var item in executionContext.ExpressionFunctions)
+            // Expression functions
+            foreach (var func in executionContext.ExpressionFunctions)
             {
-                result.ExpressionFunctions.Add(item);
+                GitHub.Actions.Expressions.IFunctionInfo newFunc = func.Name switch
+                {
+                    "always" => new GitHub.Actions.Expressions.FunctionInfo<Expressions.NewAlwaysFunction>(func.Name, func.MinParameters, func.MaxParameters),
+                    "cancelled" => new GitHub.Actions.Expressions.FunctionInfo<Expressions.NewCancelledFunction>(func.Name, func.MinParameters, func.MaxParameters),
+                    "failure" => new GitHub.Actions.Expressions.FunctionInfo<Expressions.NewFailureFunction>(func.Name, func.MinParameters, func.MaxParameters),
+                    "success" => new GitHub.Actions.Expressions.FunctionInfo<Expressions.NewSuccessFunction>(func.Name, func.MinParameters, func.MaxParameters),
+                    "hashFiles" => new GitHub.Actions.Expressions.FunctionInfo<Expressions.NewHashFilesFunction>(func.Name, func.MinParameters, func.MaxParameters),
+                    _ => throw new NotSupportedException($"Expression function '{func.Name}' is not supported in ActionManifestManager")
+                };
+                result.ExpressionFunctions.Add(newFunc);
             }
 
             // Add the file table from the Execution Context
@@ -368,7 +381,7 @@ namespace GitHub.Runner.Worker
             var postToken = default(StringToken);
             var postEntrypointToken = default(StringToken);
             var postIfToken = default(StringToken);
-            var steps = default(List<Pipelines.Step>);
+            var steps = default(List<GitHub.Actions.WorkflowParser.IStep>);
 
             foreach (var run in runsMapping)
             {
@@ -416,7 +429,7 @@ namespace GitHub.Runner.Worker
                         break;
                     case "steps":
                         var stepsToken = run.Value.AssertSequence("steps");
-                        steps = PipelineTemplateConverter.ConvertToSteps(templateContext, stepsToken);
+                        steps = WorkflowTemplateConverter.ConvertToSteps(templateContext, stepsToken);
                         templateContext.Errors.Check();
                         break;
                     default:
@@ -435,7 +448,7 @@ namespace GitHub.Runner.Worker
                     }
                     else
                     {
-                        return new ContainerActionExecutionData()
+                        return new ContainerActionExecutionDataNew()
                         {
                             Image = imageToken.Value,
                             Arguments = argsToken,
@@ -478,11 +491,11 @@ namespace GitHub.Runner.Worker
                     }
                     else
                     {
-                        return new CompositeActionExecutionData()
+                        return new CompositeActionExecutionDataNew()
                         {
-                            Steps = steps.Cast<Pipelines.ActionStep>().ToList(),
-                            PreSteps = new List<Pipelines.ActionStep>(),
-                            PostSteps = new Stack<Pipelines.ActionStep>(),
+                            Steps = steps,
+                            PreSteps = new List<GitHub.Actions.WorkflowParser.IStep>(),
+                            PostSteps = new Stack<GitHub.Actions.WorkflowParser.IStep>(),
                             InitCondition = "always()",
                             CleanupCondition = "always()",
                             Outputs = outputs
@@ -507,7 +520,7 @@ namespace GitHub.Runner.Worker
 
         private void ConvertInputs(
             TemplateToken inputsToken,
-            ActionDefinitionData actionDefinition)
+            ActionDefinitionDataNew actionDefinition)
         {
             actionDefinition.Inputs = new MappingToken(null, null, null);
             var inputsMapping = inputsToken.AssertMapping("inputs");
@@ -542,5 +555,49 @@ namespace GitHub.Runner.Worker
             }
         }
     }
+
+    public sealed class ActionDefinitionDataNew
+    {
+        public string Name { get; set; }
+
+        public string Description { get; set; }
+
+        public MappingToken Inputs { get; set; }
+
+        public ActionExecutionData Execution { get; set; }
+
+        public Dictionary<String, String> Deprecated { get; set; }
+    }
+
+    public sealed class ContainerActionExecutionDataNew : ActionExecutionData
+    {
+        public override ActionExecutionType ExecutionType => ActionExecutionType.Container;
+
+        public override bool HasPre => !string.IsNullOrEmpty(Pre);
+        public override bool HasPost => !string.IsNullOrEmpty(Post);
+
+        public string Image { get; set; }
+
+        public string EntryPoint { get; set; }
+
+        public SequenceToken Arguments { get; set; }
+
+        public MappingToken Environment { get; set; }
+
+        public string Pre { get; set; }
+
+        public string Post { get; set; }
+    }
+
+    public sealed class CompositeActionExecutionDataNew : ActionExecutionData
+    {
+        public override ActionExecutionType ExecutionType => ActionExecutionType.Composite;
+        public override bool HasPre => PreSteps.Count > 0;
+        public override bool HasPost => PostSteps.Count > 0;
+        public List<GitHub.Actions.WorkflowParser.IStep> PreSteps { get; set; }
+        public List<GitHub.Actions.WorkflowParser.IStep> Steps { get; set; }
+        public Stack<GitHub.Actions.WorkflowParser.IStep> PostSteps { get; set; }
+        public MappingToken Outputs { get; set; }
+    }
 }
 

src/Runner.Worker/ActionManifestManagerLegacy.cs

@@ -0,0 +1,546 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Threading;
+using GitHub.Runner.Common;
+using GitHub.Runner.Sdk;
+using System.Reflection;
+using GitHub.DistributedTask.Pipelines.ObjectTemplating;
+using GitHub.DistributedTask.ObjectTemplating.Schema;
+using GitHub.DistributedTask.ObjectTemplating;
+using GitHub.DistributedTask.ObjectTemplating.Tokens;
+using GitHub.DistributedTask.Pipelines.ContextData;
+using System.Linq;
+using Pipelines = GitHub.DistributedTask.Pipelines;
+
+namespace GitHub.Runner.Worker
+{
+    [ServiceLocator(Default = typeof(ActionManifestManagerLegacy))]
+    public interface IActionManifestManagerLegacy : IRunnerService
+    {
+        ActionDefinitionData Load(IExecutionContext executionContext, string manifestFile);
+
+        DictionaryContextData EvaluateCompositeOutputs(IExecutionContext executionContext, TemplateToken token, IDictionary<string, PipelineContextData> extraExpressionValues);
+
+        List<string> EvaluateContainerArguments(IExecutionContext executionContext, SequenceToken token, IDictionary<string, PipelineContextData> extraExpressionValues);
+
+        Dictionary<string, string> EvaluateContainerEnvironment(IExecutionContext executionContext, MappingToken token, IDictionary<string, PipelineContextData> extraExpressionValues);
+
+        string EvaluateDefaultInput(IExecutionContext executionContext, string inputName, TemplateToken token);
+    }
+
+    public sealed class ActionManifestManagerLegacy : RunnerService, IActionManifestManagerLegacy
+    {
+        private TemplateSchema _actionManifestSchema;
+        public override void Initialize(IHostContext hostContext)
+        {
+            base.Initialize(hostContext);
+
+            var assembly = Assembly.GetExecutingAssembly();
+            var json = default(string);
+            using (var stream = assembly.GetManifestResourceStream("GitHub.Runner.Worker.action_yaml.json"))
+            using (var streamReader = new StreamReader(stream))
+            {
+                json = streamReader.ReadToEnd();
+            }
+
+            var objectReader = new JsonObjectReader(null, json);
+            _actionManifestSchema = TemplateSchema.Load(objectReader);
+            ArgUtil.NotNull(_actionManifestSchema, nameof(_actionManifestSchema));
+            Trace.Info($"Load schema file with definitions: {StringUtil.ConvertToJson(_actionManifestSchema.Definitions.Keys)}");
+        }
+
+        public ActionDefinitionData Load(IExecutionContext executionContext, string manifestFile)
+        {
+            var templateContext = CreateTemplateContext(executionContext);
+            ActionDefinitionData actionDefinition = new();
+
+            // Clean up file name real quick
+            // Instead of using Regex which can be computationally expensive, 
+            // we can just remove the # of characters from the fileName according to the length of the basePath
+            string basePath = HostContext.GetDirectory(WellKnownDirectory.Actions);
+            string fileRelativePath = manifestFile;
+            if (manifestFile.Contains(basePath))
+            {
+                fileRelativePath = manifestFile.Remove(0, basePath.Length + 1);
+            }
+
+            try
+            {
+                var token = default(TemplateToken);
+
+                // Get the file ID
+                var fileId = templateContext.GetFileId(fileRelativePath);
+
+                // Add this file to the FileTable in executionContext if it hasn't been added already
+                // we use > since fileID is 1 indexed
+                if (fileId > executionContext.Global.FileTable.Count)
+                {
+                    executionContext.Global.FileTable.Add(fileRelativePath);
+                }
+
+                // Read the file
+                var fileContent = File.ReadAllText(manifestFile);
+                using (var stringReader = new StringReader(fileContent))
+                {
+                    var yamlObjectReader = new YamlObjectReader(fileId, stringReader);
+                    token = TemplateReader.Read(templateContext, "action-root", yamlObjectReader, fileId, out _);
+                }
+
+                var actionMapping = token.AssertMapping("action manifest root");
+                var actionOutputs = default(MappingToken);
+                var actionRunValueToken = default(TemplateToken);
+
+                foreach (var actionPair in actionMapping)
+                {
+                    var propertyName = actionPair.Key.AssertString($"action.yml property key");
+
+                    switch (propertyName.Value)
+                    {
+                        case "name":
+                            actionDefinition.Name = actionPair.Value.AssertString("name").Value;
+                            break;
+
+                        case "outputs":
+                            actionOutputs = actionPair.Value.AssertMapping("outputs");
+                            break;
+
+                        case "description":
+                            actionDefinition.Description = actionPair.Value.AssertString("description").Value;
+                            break;
+
+                        case "inputs":
+                            ConvertInputs(actionPair.Value, actionDefinition);
+                            break;
+
+                        case "runs":
+                            // Defer runs token evaluation to after for loop to ensure that order of outputs doesn't matter.
+                            actionRunValueToken = actionPair.Value;
+                            break;
+
+                        default:
+                            Trace.Info($"Ignore action property {propertyName}.");
+                            break;
+                    }
+                }
+
+                // Evaluate Runs Last
+                if (actionRunValueToken != null)
+                {
+                    actionDefinition.Execution = ConvertRuns(executionContext, templateContext, actionRunValueToken, fileRelativePath, actionOutputs);
+                }
+            }
+            catch (Exception ex)
+            {
+                Trace.Error(ex);
+                templateContext.Errors.Add(ex);
+            }
+
+            if (templateContext.Errors.Count > 0)
+            {
+                foreach (var error in templateContext.Errors)
+                {
+                    Trace.Error($"Action.yml load error: {error.Message}");
+                    executionContext.Error(error.Message);
+                }
+
+                throw new ArgumentException($"Failed to load {fileRelativePath}");
+            }
+
+            if (actionDefinition.Execution == null)
+            {
+                executionContext.Debug($"Loaded action.yml file: {StringUtil.ConvertToJson(actionDefinition)}");
+                throw new ArgumentException($"Top level 'runs:' section is required for {fileRelativePath}");
+            }
+            else
+            {
+                Trace.Info($"Loaded action.yml file: {StringUtil.ConvertToJson(actionDefinition)}");
+            }
+
+            return actionDefinition;
+        }
+
+        public DictionaryContextData EvaluateCompositeOutputs(
+            IExecutionContext executionContext,
+            TemplateToken token,
+            IDictionary<string, PipelineContextData> extraExpressionValues)
+        {
+            var result = default(DictionaryContextData);
+
+            if (token != null)
+            {
+                var templateContext = CreateTemplateContext(executionContext, extraExpressionValues);
+                try
+                {
+                    token = TemplateEvaluator.Evaluate(templateContext, "outputs", token, 0, null, omitHeader: true);
+                    templateContext.Errors.Check();
+                    result = token.ToContextData().AssertDictionary("composite outputs");
+                }
+                catch (Exception ex) when (!(ex is TemplateValidationException))
+                {
+                    templateContext.Errors.Add(ex);
+                }
+
+                templateContext.Errors.Check();
+            }
+
+            return result ?? new DictionaryContextData();
+        }
+
+        public List<string> EvaluateContainerArguments(
+            IExecutionContext executionContext,
+            SequenceToken token,
+            IDictionary<string, PipelineContextData> extraExpressionValues)
+        {
+            var result = new List<string>();
+
+            if (token != null)
+            {
+                var templateContext = CreateTemplateContext(executionContext, extraExpressionValues);
+                try
+                {
+                    var evaluateResult = TemplateEvaluator.Evaluate(templateContext, "container-runs-args", token, 0, null, omitHeader: true);
+                    templateContext.Errors.Check();
+
+                    Trace.Info($"Arguments evaluate result: {StringUtil.ConvertToJson(evaluateResult)}");
+
+                    // Sequence
+                    var args = evaluateResult.AssertSequence("container args");
+
+                    foreach (var arg in args)
+                    {
+                        var str = arg.AssertString("container arg").Value;
+                        result.Add(str);
+                        Trace.Info($"Add argument {str}");
+                    }
+                }
+                catch (Exception ex) when (!(ex is TemplateValidationException))
+                {
+                    Trace.Error(ex);
+                    templateContext.Errors.Add(ex);
+                }
+
+                templateContext.Errors.Check();
+            }
+
+            return result;
+        }
+
+        public Dictionary<string, string> EvaluateContainerEnvironment(
+            IExecutionContext executionContext,
+            MappingToken token,
+            IDictionary<string, PipelineContextData> extraExpressionValues)
+        {
+            var result = new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase);
+
+            if (token != null)
+            {
+                var templateContext = CreateTemplateContext(executionContext, extraExpressionValues);
+                try
+                {
+                    var evaluateResult = TemplateEvaluator.Evaluate(templateContext, "container-runs-env", token, 0, null, omitHeader: true);
+                    templateContext.Errors.Check();
+
+                    Trace.Info($"Environments evaluate result: {StringUtil.ConvertToJson(evaluateResult)}");
+
+                    // Mapping
+                    var mapping = evaluateResult.AssertMapping("container env");
+
+                    foreach (var pair in mapping)
+                    {
+                        // Literal key
+                        var key = pair.Key.AssertString("container env key");
+
+                        // Literal value
+                        var value = pair.Value.AssertString("container env value");
+                        result[key.Value] = value.Value;
+
+                        Trace.Info($"Add env {key} = {value}");
+                    }
+                }
+                catch (Exception ex) when (!(ex is TemplateValidationException))
+                {
+                    Trace.Error(ex);
+                    templateContext.Errors.Add(ex);
+                }
+
+                templateContext.Errors.Check();
+            }
+
+            return result;
+        }
+
+        public string EvaluateDefaultInput(
+            IExecutionContext executionContext,
+            string inputName,
+            TemplateToken token)
+        {
+            string result = "";
+            if (token != null)
+            {
+                var templateContext = CreateTemplateContext(executionContext);
+                try
+                {
+                    var evaluateResult = TemplateEvaluator.Evaluate(templateContext, "input-default-context", token, 0, null, omitHeader: true);
+                    templateContext.Errors.Check();
+
+                    Trace.Info($"Input '{inputName}': default value evaluate result: {StringUtil.ConvertToJson(evaluateResult)}");
+
+                    // String
+                    result = evaluateResult.AssertString($"default value for input '{inputName}'").Value;
+                }
+                catch (Exception ex) when (!(ex is TemplateValidationException))
+                {
+                    Trace.Error(ex);
+                    templateContext.Errors.Add(ex);
+                }
+
+                templateContext.Errors.Check();
+            }
+
+            return result;
+        }
+
+        private TemplateContext CreateTemplateContext(
+            IExecutionContext executionContext,
+            IDictionary<string, PipelineContextData> extraExpressionValues = null)
+        {
+            var result = new TemplateContext
+            {
+                CancellationToken = CancellationToken.None,
+                Errors = new TemplateValidationErrors(10, int.MaxValue), // Don't truncate error messages otherwise we might not scrub secrets correctly
+                Memory = new TemplateMemory(
+                    maxDepth: 100,
+                    maxEvents: 1000000,
+                    maxBytes: 10 * 1024 * 1024),
+                Schema = _actionManifestSchema,
+                TraceWriter = executionContext.ToTemplateTraceWriter(),
+            };
+
+            // Expression values from execution context
+            foreach (var pair in executionContext.ExpressionValues)
+            {
+                result.ExpressionValues[pair.Key] = pair.Value;
+            }
+
+            // Extra expression values
+            if (extraExpressionValues?.Count > 0)
+            {
+                foreach (var pair in extraExpressionValues)
+                {
+                    result.ExpressionValues[pair.Key] = pair.Value;
+                }
+            }
+
+            // Expression functions from execution context
+            foreach (var item in executionContext.ExpressionFunctions)
+            {
+                result.ExpressionFunctions.Add(item);
+            }
+
+            // Add the file table from the Execution Context
+            for (var i = 0; i < executionContext.Global.FileTable.Count; i++)
+            {
+                result.GetFileId(executionContext.Global.FileTable[i]);
+            }
+
+            return result;
+        }
+
+        private ActionExecutionData ConvertRuns(
+            IExecutionContext executionContext,
+            TemplateContext templateContext,
+            TemplateToken inputsToken,
+            String fileRelativePath,
+            MappingToken outputs = null)
+        {
+            var runsMapping = inputsToken.AssertMapping("runs");
+            var usingToken = default(StringToken);
+            var imageToken = default(StringToken);
+            var argsToken = default(SequenceToken);
+            var entrypointToken = default(StringToken);
+            var envToken = default(MappingToken);
+            var mainToken = default(StringToken);
+            var pluginToken = default(StringToken);
+            var preToken = default(StringToken);
+            var preEntrypointToken = default(StringToken);
+            var preIfToken = default(StringToken);
+            var postToken = default(StringToken);
+            var postEntrypointToken = default(StringToken);
+            var postIfToken = default(StringToken);
+            var steps = default(List<Pipelines.Step>);
+
+            foreach (var run in runsMapping)
+            {
+                var runsKey = run.Key.AssertString("runs key").Value;
+                switch (runsKey)
+                {
+                    case "using":
+                        usingToken = run.Value.AssertString("using");
+                        break;
+                    case "image":
+                        imageToken = run.Value.AssertString("image");
+                        break;
+                    case "args":
+                        argsToken = run.Value.AssertSequence("args");
+                        break;
+                    case "entrypoint":
+                        entrypointToken = run.Value.AssertString("entrypoint");
+                        break;
+                    case "env":
+                        envToken = run.Value.AssertMapping("env");
+                        break;
+                    case "main":
+                        mainToken = run.Value.AssertString("main");
+                        break;
+                    case "plugin":
+                        pluginToken = run.Value.AssertString("plugin");
+                        break;
+                    case "post":
+                        postToken = run.Value.AssertString("post");
+                        break;
+                    case "post-entrypoint":
+                        postEntrypointToken = run.Value.AssertString("post-entrypoint");
+                        break;
+                    case "post-if":
+                        postIfToken = run.Value.AssertString("post-if");
+                        break;
+                    case "pre":
+                        preToken = run.Value.AssertString("pre");
+                        break;
+                    case "pre-entrypoint":
+                        preEntrypointToken = run.Value.AssertString("pre-entrypoint");
+                        break;
+                    case "pre-if":
+                        preIfToken = run.Value.AssertString("pre-if");
+                        break;
+                    case "steps":
+                        var stepsToken = run.Value.AssertSequence("steps");
+                        steps = PipelineTemplateConverter.ConvertToSteps(templateContext, stepsToken);
+                        templateContext.Errors.Check();
+                        break;
+                    default:
+                        Trace.Info($"Ignore run property {runsKey}.");
+                        break;
+                }
+            }
+
+            if (usingToken != null)
+            {
+                if (string.Equals(usingToken.Value, "docker", StringComparison.OrdinalIgnoreCase))
+                {
+                    if (string.IsNullOrEmpty(imageToken?.Value))
+                    {
+                        throw new ArgumentNullException($"You are using a Container Action but an image is not provided in {fileRelativePath}.");
+                    }
+                    else
+                    {
+                        return new ContainerActionExecutionData()
+                        {
+                            Image = imageToken.Value,
+                            Arguments = argsToken,
+                            EntryPoint = entrypointToken?.Value,
+                            Environment = envToken,
+                            Pre = preEntrypointToken?.Value,
+                            InitCondition = preIfToken?.Value ?? "always()",
+                            Post = postEntrypointToken?.Value,
+                            CleanupCondition = postIfToken?.Value ?? "always()"
+                        };
+                    }
+                }
+                else if (string.Equals(usingToken.Value, "node12", StringComparison.OrdinalIgnoreCase) ||
+                         string.Equals(usingToken.Value, "node16", StringComparison.OrdinalIgnoreCase) ||
+                         string.Equals(usingToken.Value, "node20", StringComparison.OrdinalIgnoreCase) ||
+                         string.Equals(usingToken.Value, "node24", StringComparison.OrdinalIgnoreCase))
+                {
+                    if (string.IsNullOrEmpty(mainToken?.Value))
+                    {
+                        throw new ArgumentNullException($"You are using a JavaScript Action but there is not an entry JavaScript file provided in {fileRelativePath}.");
+                    }
+                    else
+                    {
+                        return new NodeJSActionExecutionData()
+                        {
+                            NodeVersion = usingToken.Value,
+                            Script = mainToken.Value,
+                            Pre = preToken?.Value,
+                            InitCondition = preIfToken?.Value ?? "always()",
+                            Post = postToken?.Value,
+                            CleanupCondition = postIfToken?.Value ?? "always()"
+                        };
+                    }
+                }
+                else if (string.Equals(usingToken.Value, "composite", StringComparison.OrdinalIgnoreCase))
+                {
+                    if (steps == null)
+                    {
+                        throw new ArgumentNullException($"You are using a composite action but there are no steps provided in {fileRelativePath}.");
+                    }
+                    else
+                    {
+                        return new CompositeActionExecutionData()
+                        {
+                            Steps = steps.Cast<Pipelines.ActionStep>().ToList(),
+                            PreSteps = new List<Pipelines.ActionStep>(),
+                            PostSteps = new Stack<Pipelines.ActionStep>(),
+                            InitCondition = "always()",
+                            CleanupCondition = "always()",
+                            Outputs = outputs
+                        };
+                    }
+                }
+                else
+                {
+                    throw new ArgumentOutOfRangeException($"'using: {usingToken.Value}' is not supported, use 'docker', 'node12', 'node16', 'node20' or 'node24' instead.");
+                }
+            }
+            else if (pluginToken != null)
+            {
+                return new PluginActionExecutionData()
+                {
+                    Plugin = pluginToken.Value
+                };
+            }
+
+            throw new NotSupportedException("Missing 'using' value. 'using' requires 'composite', 'docker', 'node12', 'node16', 'node20' or 'node24'.");
+        }
+
+        private void ConvertInputs(
+            TemplateToken inputsToken,
+            ActionDefinitionData actionDefinition)
+        {
+            actionDefinition.Inputs = new MappingToken(null, null, null);
+            var inputsMapping = inputsToken.AssertMapping("inputs");
+            foreach (var input in inputsMapping)
+            {
+                bool hasDefault = false;
+                var inputName = input.Key.AssertString("input name");
+                var inputMetadata = input.Value.AssertMapping("input metadata");
+                foreach (var metadata in inputMetadata)
+                {
+                    var metadataName = metadata.Key.AssertString("input metadata").Value;
+                    if (string.Equals(metadataName, "default", StringComparison.OrdinalIgnoreCase))
+                    {
+                        hasDefault = true;
+                        actionDefinition.Inputs.Add(inputName, metadata.Value);
+                    }
+                    else if (string.Equals(metadataName, "deprecationMessage", StringComparison.OrdinalIgnoreCase))
+                    {
+                        if (actionDefinition.Deprecated == null)
+                        {
+                            actionDefinition.Deprecated = new Dictionary<String, String>();
+                        }
+                        var message = metadata.Value.AssertString("input deprecationMessage");
+                        actionDefinition.Deprecated.Add(inputName.Value, message.Value);
+                    }
+                }
+
+                if (!hasDefault)
+                {
+                    actionDefinition.Inputs.Add(inputName, new StringToken(null, null, null, string.Empty));
+                }
+            }
+        }
+    }
+}
+

src/Runner.Worker/ActionManifestManagerWrapper.cs

@@ -0,0 +1,701 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using GitHub.Actions.WorkflowParser;
+using GitHub.DistributedTask.Pipelines;
+using GitHub.DistributedTask.Pipelines.ContextData;
+using GitHub.DistributedTask.ObjectTemplating.Tokens;
+using GitHub.DistributedTask.WebApi;
+using GitHub.Runner.Common;
+using GitHub.Runner.Sdk;
+using ObjectTemplating = GitHub.DistributedTask.ObjectTemplating;
+
+namespace GitHub.Runner.Worker
+{
+    [ServiceLocator(Default = typeof(ActionManifestManagerWrapper))]
+    public interface IActionManifestManagerWrapper : IRunnerService
+    {
+        ActionDefinitionData Load(IExecutionContext executionContext, string manifestFile);
+
+        DictionaryContextData EvaluateCompositeOutputs(IExecutionContext executionContext, TemplateToken token, IDictionary<string, PipelineContextData> extraExpressionValues);
+
+        List<string> EvaluateContainerArguments(IExecutionContext executionContext, SequenceToken token, IDictionary<string, PipelineContextData> extraExpressionValues);
+
+        Dictionary<string, string> EvaluateContainerEnvironment(IExecutionContext executionContext, MappingToken token, IDictionary<string, PipelineContextData> extraExpressionValues);
+
+        string EvaluateDefaultInput(IExecutionContext executionContext, string inputName, TemplateToken token);
+    }
+
+    public sealed class ActionManifestManagerWrapper : RunnerService, IActionManifestManagerWrapper
+    {
+        private IActionManifestManagerLegacy _legacyManager;
+        private IActionManifestManager _newManager;
+
+        public override void Initialize(IHostContext hostContext)
+        {
+            base.Initialize(hostContext);
+            _legacyManager = hostContext.GetService<IActionManifestManagerLegacy>();
+            _newManager = hostContext.GetService<IActionManifestManager>();
+        }
+
+        public ActionDefinitionData Load(IExecutionContext executionContext, string manifestFile)
+        {
+            return EvaluateAndCompare(
+                executionContext,
+                "Load",
+                () => _legacyManager.Load(executionContext, manifestFile),
+                () => ConvertToLegacyActionDefinitionData(_newManager.Load(executionContext, manifestFile)),
+                (legacyResult, newResult) => CompareActionDefinition(legacyResult, newResult));
+        }
+
+        public DictionaryContextData EvaluateCompositeOutputs(
+            IExecutionContext executionContext,
+            TemplateToken token,
+            IDictionary<string, PipelineContextData> extraExpressionValues)
+        {
+            return EvaluateAndCompare(
+                executionContext,
+                "EvaluateCompositeOutputs",
+                () => _legacyManager.EvaluateCompositeOutputs(executionContext, token, extraExpressionValues),
+                () => ConvertToLegacyContextData<DictionaryContextData>(_newManager.EvaluateCompositeOutputs(executionContext, ConvertToNewToken(token), ConvertToNewExpressionValues(extraExpressionValues))),
+                (legacyResult, newResult) => CompareDictionaryContextData(legacyResult, newResult));
+        }
+
+        public List<string> EvaluateContainerArguments(
+            IExecutionContext executionContext,
+            SequenceToken token,
+            IDictionary<string, PipelineContextData> extraExpressionValues)
+        {
+            return EvaluateAndCompare(
+                executionContext,
+                "EvaluateContainerArguments",
+                () => _legacyManager.EvaluateContainerArguments(executionContext, token, extraExpressionValues),
+                () => _newManager.EvaluateContainerArguments(executionContext, ConvertToNewToken(token) as GitHub.Actions.WorkflowParser.ObjectTemplating.Tokens.SequenceToken, ConvertToNewExpressionValues(extraExpressionValues)),
+                (legacyResult, newResult) => CompareLists(legacyResult, newResult, "ContainerArguments"));
+        }
+
+        public Dictionary<string, string> EvaluateContainerEnvironment(
+            IExecutionContext executionContext,
+            MappingToken token,
+            IDictionary<string, PipelineContextData> extraExpressionValues)
+        {
+            return EvaluateAndCompare(
+                executionContext,
+                "EvaluateContainerEnvironment",
+                () => _legacyManager.EvaluateContainerEnvironment(executionContext, token, extraExpressionValues),
+                () => _newManager.EvaluateContainerEnvironment(executionContext, ConvertToNewToken(token) as GitHub.Actions.WorkflowParser.ObjectTemplating.Tokens.MappingToken, ConvertToNewExpressionValues(extraExpressionValues)),
+                (legacyResult, newResult) => {
+                    var trace = HostContext.GetTrace(nameof(ActionManifestManagerWrapper));
+                    return CompareDictionaries(trace, legacyResult, newResult, "ContainerEnvironment");
+                });
+        }
+
+        public string EvaluateDefaultInput(
+            IExecutionContext executionContext,
+            string inputName,
+            TemplateToken token)
+        {
+            return EvaluateAndCompare(
+                executionContext,
+                "EvaluateDefaultInput",
+                () => _legacyManager.EvaluateDefaultInput(executionContext, inputName, token),
+                () => _newManager.EvaluateDefaultInput(executionContext, inputName, ConvertToNewToken(token)),
+                (legacyResult, newResult) => string.Equals(legacyResult, newResult, StringComparison.Ordinal));
+        }
+
+        // Conversion helper methods
+        private ActionDefinitionData ConvertToLegacyActionDefinitionData(ActionDefinitionDataNew newData)
+        {
+            if (newData == null)
+            {
+                return null;
+            }
+
+            return new ActionDefinitionData
+            {
+                Name = newData.Name,
+                Description = newData.Description,
+                Inputs = ConvertToLegacyToken<MappingToken>(newData.Inputs),
+                Deprecated = newData.Deprecated,
+                Execution = ConvertToLegacyExecution(newData.Execution)
+            };
+        }
+
+        private ActionExecutionData ConvertToLegacyExecution(ActionExecutionData execution)
+        {
+            if (execution == null)
+            {
+                return null;
+            }
+
+            // Handle different execution types
+            if (execution is ContainerActionExecutionDataNew containerNew)
+            {
+                return new ContainerActionExecutionData
+                {
+                    Image = containerNew.Image,
+                    EntryPoint = containerNew.EntryPoint,
+                    Arguments = ConvertToLegacyToken<SequenceToken>(containerNew.Arguments),
+                    Environment = ConvertToLegacyToken<MappingToken>(containerNew.Environment),
+                    Pre = containerNew.Pre,
+                    Post = containerNew.Post,
+                    InitCondition = containerNew.InitCondition,
+                    CleanupCondition = containerNew.CleanupCondition
+                };
+            }
+            else if (execution is CompositeActionExecutionDataNew compositeNew)
+            {
+                return new CompositeActionExecutionData
+                {
+                    Steps = ConvertToLegacySteps(compositeNew.Steps),
+                    Outputs = ConvertToLegacyToken<MappingToken>(compositeNew.Outputs)
+                };
+            }
+            else
+            {
+                // For NodeJS and Plugin execution, they don't use new token types, so just return as-is
+                return execution;
+            }
+        }
+
+        private List<GitHub.DistributedTask.Pipelines.ActionStep> ConvertToLegacySteps(List<GitHub.Actions.WorkflowParser.IStep> newSteps)
+        {
+            if (newSteps == null)
+            {
+                return null;
+            }
+
+            // Serialize new steps and deserialize to old steps
+            var json = StringUtil.ConvertToJson(newSteps, Newtonsoft.Json.Formatting.None);
+            return StringUtil.ConvertFromJson<List<GitHub.DistributedTask.Pipelines.ActionStep>>(json);
+        }
+
+        private T ConvertToLegacyToken<T>(GitHub.Actions.WorkflowParser.ObjectTemplating.Tokens.TemplateToken newToken) where T : TemplateToken
+        {
+            if (newToken == null)
+            {
+                return null;
+            }
+
+            // Serialize and deserialize to convert between token types
+            var json = StringUtil.ConvertToJson(newToken, Newtonsoft.Json.Formatting.None);
+            return StringUtil.ConvertFromJson<T>(json);
+        }
+
+        private GitHub.Actions.WorkflowParser.ObjectTemplating.Tokens.TemplateToken ConvertToNewToken(TemplateToken legacyToken)
+        {
+            if (legacyToken == null)
+            {
+                return null;
+            }
+
+            var json = StringUtil.ConvertToJson(legacyToken, Newtonsoft.Json.Formatting.None);
+            return StringUtil.ConvertFromJson<GitHub.Actions.WorkflowParser.ObjectTemplating.Tokens.TemplateToken>(json);
+        }
+
+        private IDictionary<string, GitHub.Actions.Expressions.Data.ExpressionData> ConvertToNewExpressionValues(IDictionary<string, PipelineContextData> legacyValues)
+        {
+            if (legacyValues == null)
+            {
+                return null;
+            }
+
+            var json = StringUtil.ConvertToJson(legacyValues, Newtonsoft.Json.Formatting.None);
+            return StringUtil.ConvertFromJson<IDictionary<string, GitHub.Actions.Expressions.Data.ExpressionData>>(json);
+        }
+
+        private T ConvertToLegacyContextData<T>(GitHub.Actions.Expressions.Data.ExpressionData newData) where T : PipelineContextData
+        {
+            if (newData == null)
+            {
+                return null;
+            }
+
+            var json = StringUtil.ConvertToJson(newData, Newtonsoft.Json.Formatting.None);
+            return StringUtil.ConvertFromJson<T>(json);
+        }
+
+        // Comparison helper methods
+        private TLegacy EvaluateAndCompare<TLegacy, TNew>(
+            IExecutionContext context,
+            string methodName,
+            Func<TLegacy> legacyEvaluator,
+            Func<TNew> newEvaluator,
+            Func<TLegacy, TNew, bool> resultComparer)
+        {
+            // Legacy only?
+            if (!((context.Global.Variables.GetBoolean(Constants.Runner.Features.CompareWorkflowParser) ?? false)
+                || StringUtil.ConvertToBoolean(Environment.GetEnvironmentVariable("ACTIONS_RUNNER_COMPARE_WORKFLOW_PARSER"))))
+            {
+                return legacyEvaluator();
+            }
+
+            var trace = HostContext.GetTrace(nameof(ActionManifestManagerWrapper));
+
+            // Legacy evaluator
+            var legacyException = default(Exception);
+            var legacyResult = default(TLegacy);
+            try
+            {
+                legacyResult = legacyEvaluator();
+            }
+            catch (Exception ex)
+            {
+                legacyException = ex;
+            }
+
+            // Compare with new evaluator
+            try
+            {
+                ArgUtil.NotNull(context, nameof(context));
+                trace.Info(methodName);
+
+                // New evaluator
+                var newException = default(Exception);
+                var newResult = default(TNew);
+                try
+                {
+                    newResult = newEvaluator();
+                }
+                catch (Exception ex)
+                {
+                    newException = ex;
+                }
+
+                // Compare results or exceptions
+                if (legacyException != null || newException != null)
+                {
+                    // Either one or both threw exceptions - compare them
+                    if (!CompareExceptions(trace, legacyException, newException))
+                    {
+                        trace.Info($"{methodName} exception mismatch");
+                        RecordMismatch(context, $"{methodName}");
+                    }
+                }
+                else
+                {
+                    // Both succeeded - compare results
+                    // Skip comparison if new implementation returns null (not yet implemented)
+                    if (newResult != null && !resultComparer(legacyResult, newResult))
+                    {
+                        trace.Info($"{methodName} mismatch");
+                        RecordMismatch(context, $"{methodName}");
+                    }
+                }
+            }
+            catch (Exception ex)
+            {
+                trace.Info($"Comparison failed: {ex.Message}");
+                RecordComparisonError(context, $"{methodName}: {ex.Message}");
+            }
+
+            // Re-throw legacy exception if any
+            if (legacyException != null)
+            {
+                throw legacyException;
+            }
+
+            return legacyResult;
+        }
+
+        private void RecordMismatch(IExecutionContext context, string methodName)
+        {
+            if (!context.Global.HasActionManifestMismatch)
+            {
+                context.Global.HasActionManifestMismatch = true;
+                var telemetry = new JobTelemetry { Type = JobTelemetryType.General, Message = $"ActionManifestMismatch: {methodName}" };
+                context.Global.JobTelemetry.Add(telemetry);
+            }
+        }
+
+        private void RecordComparisonError(IExecutionContext context, string errorDetails)
+        {
+            if (!context.Global.HasActionManifestMismatch)
+            {
+                context.Global.HasActionManifestMismatch = true;
+                var telemetry = new JobTelemetry { Type = JobTelemetryType.General, Message = $"ActionManifestComparisonError: {errorDetails}" };
+                context.Global.JobTelemetry.Add(telemetry);
+            }
+        }
+
+        private bool CompareActionDefinition(ActionDefinitionData legacyResult, ActionDefinitionData newResult)
+        {
+            var trace = HostContext.GetTrace(nameof(ActionManifestManagerWrapper));
+            if (legacyResult == null && newResult == null)
+            {
+                return true;
+            }
+
+            if (legacyResult == null || newResult == null)
+            {
+                trace.Info($"CompareActionDefinition mismatch - one result is null (legacy={legacyResult == null}, new={newResult == null})");
+                return false;
+            }
+
+            if (!string.Equals(legacyResult.Name, newResult.Name, StringComparison.Ordinal))
+            {
+                trace.Info($"CompareActionDefinition mismatch - Name differs (legacy='{legacyResult.Name}', new='{newResult.Name}')");
+                return false;
+            }
+
+            if (!string.Equals(legacyResult.Description, newResult.Description, StringComparison.Ordinal))
+            {
+                trace.Info($"CompareActionDefinition mismatch - Description differs (legacy='{legacyResult.Description}', new='{newResult.Description}')");
+                return false;
+            }
+
+            // Compare Inputs token
+            var legacyInputsJson = legacyResult.Inputs != null ? StringUtil.ConvertToJson(legacyResult.Inputs) : null;
+            var newInputsJson = newResult.Inputs != null ? StringUtil.ConvertToJson(newResult.Inputs) : null;
+            if (!string.Equals(legacyInputsJson, newInputsJson, StringComparison.Ordinal))
+            {
+                trace.Info($"CompareActionDefinition mismatch - Inputs differ");
+                return false;
+            }
+
+            // Compare Deprecated
+            if (!CompareDictionaries(trace, legacyResult.Deprecated, newResult.Deprecated, "Deprecated"))
+            {
+                return false;
+            }
+
+            // Compare Execution
+            if (!CompareExecution(trace, legacyResult.Execution, newResult.Execution))
+            {
+                return false;
+            }
+
+            return true;
+        }
+
+        private bool CompareExecution(Tracing trace, ActionExecutionData legacy, ActionExecutionData newExecution)
+        {
+            if (legacy == null && newExecution == null)
+            {
+                return true;
+            }
+
+            if (legacy == null || newExecution == null)
+            {
+                trace.Info($"CompareExecution mismatch - one is null (legacy={legacy == null}, new={newExecution == null})");
+                return false;
+            }
+
+            if (legacy.GetType() != newExecution.GetType())
+            {
+                trace.Info($"CompareExecution mismatch - different types (legacy={legacy.GetType().Name}, new={newExecution.GetType().Name})");
+                return false;
+            }
+
+            // Compare based on type
+            if (legacy is NodeJSActionExecutionData legacyNode && newExecution is NodeJSActionExecutionData newNode)
+            {
+                return CompareNodeJSExecution(trace, legacyNode, newNode);
+            }
+            else if (legacy is ContainerActionExecutionData legacyContainer && newExecution is ContainerActionExecutionData newContainer)
+            {
+                return CompareContainerExecution(trace, legacyContainer, newContainer);
+            }
+            else if (legacy is CompositeActionExecutionData legacyComposite && newExecution is CompositeActionExecutionData newComposite)
+            {
+                return CompareCompositeExecution(trace, legacyComposite, newComposite);
+            }
+            else if (legacy is PluginActionExecutionData legacyPlugin && newExecution is PluginActionExecutionData newPlugin)
+            {
+                return ComparePluginExecution(trace, legacyPlugin, newPlugin);
+            }
+
+            return true;
+        }
+
+        private bool CompareNodeJSExecution(Tracing trace, NodeJSActionExecutionData legacy, NodeJSActionExecutionData newExecution)
+        {
+            if (!string.Equals(legacy.NodeVersion, newExecution.NodeVersion, StringComparison.Ordinal))
+            {
+                trace.Info($"CompareNodeJSExecution mismatch - NodeVersion differs (legacy='{legacy.NodeVersion}', new='{newExecution.NodeVersion}')");
+                return false;
+            }
+
+            if (!string.Equals(legacy.Script, newExecution.Script, StringComparison.Ordinal))
+            {
+                trace.Info($"CompareNodeJSExecution mismatch - Script differs (legacy='{legacy.Script}', new='{newExecution.Script}')");
+                return false;
+            }
+
+            if (!string.Equals(legacy.Pre, newExecution.Pre, StringComparison.Ordinal))
+            {
+                trace.Info($"CompareNodeJSExecution mismatch - Pre differs");
+                return false;
+            }
+
+            if (!string.Equals(legacy.Post, newExecution.Post, StringComparison.Ordinal))
+            {
+                trace.Info($"CompareNodeJSExecution mismatch - Post differs");
+                return false;
+            }
+
+            if (!string.Equals(legacy.InitCondition, newExecution.InitCondition, StringComparison.Ordinal))
+            {
+                trace.Info($"CompareNodeJSExecution mismatch - InitCondition differs");
+                return false;
+            }
+
+            if (!string.Equals(legacy.CleanupCondition, newExecution.CleanupCondition, StringComparison.Ordinal))
+            {
+                trace.Info($"CompareNodeJSExecution mismatch - CleanupCondition differs");
+                return false;
+            }
+
+            return true;
+        }
+
+        private bool CompareContainerExecution(Tracing trace, ContainerActionExecutionData legacy, ContainerActionExecutionData newExecution)
+        {
+            if (!string.Equals(legacy.Image, newExecution.Image, StringComparison.Ordinal))
+            {
+                trace.Info($"CompareContainerExecution mismatch - Image differs");
+                return false;
+            }
+
+            if (!string.Equals(legacy.EntryPoint, newExecution.EntryPoint, StringComparison.Ordinal))
+            {
+                trace.Info($"CompareContainerExecution mismatch - EntryPoint differs");
+                return false;
+            }
+
+            // Compare Arguments token
+            var legacyArgsJson = legacy.Arguments != null ? StringUtil.ConvertToJson(legacy.Arguments) : null;
+            var newArgsJson = newExecution.Arguments != null ? StringUtil.ConvertToJson(newExecution.Arguments) : null;
+            if (!string.Equals(legacyArgsJson, newArgsJson, StringComparison.Ordinal))
+            {
+                trace.Info($"CompareContainerExecution mismatch - Arguments differ");
+                return false;
+            }
+
+            // Compare Environment token
+            var legacyEnvJson = legacy.Environment != null ? StringUtil.ConvertToJson(legacy.Environment) : null;
+            var newEnvJson = newExecution.Environment != null ? StringUtil.ConvertToJson(newExecution.Environment) : null;
+            if (!string.Equals(legacyEnvJson, newEnvJson, StringComparison.Ordinal))
+            {
+                trace.Info($"CompareContainerExecution mismatch - Environment differs");
+                return false;
+            }
+
+            return true;
+        }
+
+        private bool CompareCompositeExecution(Tracing trace, CompositeActionExecutionData legacy, CompositeActionExecutionData newExecution)
+        {
+            // Compare Steps
+            if (legacy.Steps?.Count != newExecution.Steps?.Count)
+            {
+                trace.Info($"CompareCompositeExecution mismatch - Steps.Count differs (legacy={legacy.Steps?.Count}, new={newExecution.Steps?.Count})");
+                return false;
+            }
+
+            // Compare Outputs token
+            var legacyOutputsJson = legacy.Outputs != null ? StringUtil.ConvertToJson(legacy.Outputs) : null;
+            var newOutputsJson = newExecution.Outputs != null ? StringUtil.ConvertToJson(newExecution.Outputs) : null;
+            if (!string.Equals(legacyOutputsJson, newOutputsJson, StringComparison.Ordinal))
+            {
+                trace.Info($"CompareCompositeExecution mismatch - Outputs differ");
+                return false;
+            }
+
+            return true;
+        }
+
+        private bool ComparePluginExecution(Tracing trace, PluginActionExecutionData legacy, PluginActionExecutionData newExecution)
+        {
+            if (!string.Equals(legacy.Plugin, newExecution.Plugin, StringComparison.Ordinal))
+            {
+                trace.Info($"ComparePluginExecution mismatch - Plugin differs");
+                return false;
+            }
+
+            return true;
+        }
+
+        private bool CompareDictionaryContextData(DictionaryContextData legacy, DictionaryContextData newData)
+        {
+            var trace = HostContext.GetTrace(nameof(ActionManifestManagerWrapper));
+            if (legacy == null && newData == null)
+            {
+                return true;
+            }
+
+            if (legacy == null || newData == null)
+            {
+                trace.Info($"CompareDictionaryContextData mismatch - one is null (legacy={legacy == null}, new={newData == null})");
+                return false;
+            }
+
+            var legacyJson = StringUtil.ConvertToJson(legacy);
+            var newJson = StringUtil.ConvertToJson(newData);
+
+            if (!string.Equals(legacyJson, newJson, StringComparison.Ordinal))
+            {
+                trace.Info($"CompareDictionaryContextData mismatch");
+                return false;
+            }
+
+            return true;
+        }
+
+        private bool CompareLists(IList<string> legacyList, IList<string> newList, string fieldName)
+        {
+            var trace = HostContext.GetTrace(nameof(ActionManifestManagerWrapper));
+            if (legacyList == null && newList == null)
+            {
+                return true;
+            }
+
+            if (legacyList == null || newList == null)
+            {
+                trace.Info($"CompareLists mismatch - {fieldName} - one is null (legacy={legacyList == null}, new={newList == null})");
+                return false;
+            }
+
+            if (legacyList.Count != newList.Count)
+            {
+                trace.Info($"CompareLists mismatch - {fieldName}.Count differs (legacy={legacyList.Count}, new={newList.Count})");
+                return false;
+            }
+
+            for (int i = 0; i < legacyList.Count; i++)
+            {
+                if (!string.Equals(legacyList[i], newList[i], StringComparison.Ordinal))
+                {
+                    trace.Info($"CompareLists mismatch - {fieldName}[{i}] differs (legacy='{legacyList[i]}', new='{newList[i]}')");
+                    return false;
+                }
+            }
+
+            return true;
+        }
+
+        private bool CompareDictionaries(Tracing trace, IDictionary<string, string> legacyDict, IDictionary<string, string> newDict, string fieldName)
+        {
+            if (legacyDict == null && newDict == null)
+            {
+                return true;
+            }
+
+            if (legacyDict == null || newDict == null)
+            {
+                trace.Info($"CompareDictionaries mismatch - {fieldName} - one is null (legacy={legacyDict == null}, new={newDict == null})");
+                return false;
+            }
+
+            if (legacyDict is Dictionary<string, string> legacyTypedDict && newDict is Dictionary<string, string> newTypedDict)
+            {
+                if (!object.Equals(legacyTypedDict.Comparer, newTypedDict.Comparer))
+                {
+                    trace.Info($"CompareDictionaries mismatch - {fieldName} - different comparers (legacy={legacyTypedDict.Comparer.GetType().Name}, new={newTypedDict.Comparer.GetType().Name})");
+                    return false;
+                }
+            }
+
+            if (legacyDict.Count != newDict.Count)
+            {
+                trace.Info($"CompareDictionaries mismatch - {fieldName}.Count differs (legacy={legacyDict.Count}, new={newDict.Count})");
+                return false;
+            }
+
+            foreach (var kvp in legacyDict)
+            {
+                if (!newDict.TryGetValue(kvp.Key, out var newValue))
+                {
+                    trace.Info($"CompareDictionaries mismatch - {fieldName} - key '{kvp.Key}' missing in new result");
+                    return false;
+                }
+
+                if (!string.Equals(kvp.Value, newValue, StringComparison.Ordinal))
+                {
+                    trace.Info($"CompareDictionaries mismatch - {fieldName}['{kvp.Key}'] differs (legacy='{kvp.Value}', new='{newValue}')");
+                    return false;
+                }
+            }
+
+            return true;
+        }
+
+        private bool CompareExceptions(Tracing trace, Exception legacyException, Exception newException)
+        {
+            if (legacyException == null && newException == null)
+            {
+                return true;
+            }
+
+            if (legacyException == null || newException == null)
+            {
+                trace.Info($"CompareExceptions mismatch - one exception is null (legacy={legacyException == null}, new={newException == null})");
+                return false;
+            }
+
+            // Compare exception messages recursively (including inner exceptions)
+            var legacyMessages = GetExceptionMessages(legacyException);
+            var newMessages = GetExceptionMessages(newException);
+
+            if (legacyMessages.Count != newMessages.Count)
+            {
+                trace.Info($"CompareExceptions mismatch - different number of exception messages (legacy={legacyMessages.Count}, new={newMessages.Count})");
+                return false;
+            }
+
+            for (int i = 0; i < legacyMessages.Count; i++)
+            {
+                if (!string.Equals(legacyMessages[i], newMessages[i], StringComparison.Ordinal))
+                {
+                    trace.Info($"CompareExceptions mismatch - exception messages differ at level {i} (legacy='{legacyMessages[i]}', new='{newMessages[i]}')");
+                    return false;
+                }
+            }
+
+            return true;
+        }
+
+        private IList<string> GetExceptionMessages(Exception ex)
+        {
+            var trace = HostContext.GetTrace(nameof(ActionManifestManagerWrapper));
+            var messages = new List<string>();
+            var toProcess = new Queue<Exception>();
+            toProcess.Enqueue(ex);
+            int count = 0;
+
+            while (toProcess.Count > 0 && count < 50)
+            {
+                var current = toProcess.Dequeue();
+                if (current == null) continue;
+
+                messages.Add(current.Message);
+                count++;
+
+                // Special handling for AggregateException - enqueue all inner exceptions
+                if (current is AggregateException aggregateEx)
+                {
+                    foreach (var innerEx in aggregateEx.InnerExceptions)
+                    {
+                        if (innerEx != null && count < 50)
+                        {
+                            toProcess.Enqueue(innerEx);
+                        }
+                    }
+                }
+                else if (current.InnerException != null)
+                {
+                    toProcess.Enqueue(current.InnerException);
+                }
+
+                // Failsafe: if we have too many exceptions, stop and return what we have
+                if (count >= 50)
+                {
+                    trace.Info("CompareExceptions failsafe triggered - too many exceptions (50+)");
+                    break;
+                }
+            }
+
+            return messages;
+        }
+    }
+}

src/Runner.Worker/ActionRunner.cs

@@ -206,7 +206,7 @@ namespace GitHub.Runner.Worker
             // Merge the default inputs from the definition
             if (definition.Data?.Inputs != null)
             {
-                var manifestManager = HostContext.GetService<IActionManifestManager>();
+                var manifestManager = HostContext.GetService<IActionManifestManagerWrapper>();
                 foreach (var input in definition.Data.Inputs)
                 {
                     string key = input.Key.AssertString("action input name").Value;

src/Runner.Worker/ExecutionContext.cs

@@ -1397,7 +1397,7 @@ namespace GitHub.Runner.Worker
         public static IPipelineTemplateEvaluator ToPipelineTemplateEvaluator(this IExecutionContext context, ObjectTemplating.ITraceWriter traceWriter = null)
         {
             // Create wrapper?
-            if ((context.Global.Variables.GetBoolean(Constants.Runner.Features.CompareTemplateEvaluator) ?? false) || StringUtil.ConvertToBoolean(Environment.GetEnvironmentVariable("ACTIONS_RUNNER_COMPARE_TEMPLATE_EVALUATOR")))
+            if ((context.Global.Variables.GetBoolean(Constants.Runner.Features.CompareWorkflowParser) ?? false) || StringUtil.ConvertToBoolean(Environment.GetEnvironmentVariable("ACTIONS_RUNNER_COMPARE_WORKFLOW_PARSER")))
             {
                 return (context as ExecutionContext).ToPipelineTemplateEvaluatorInternal(traceWriter);
             }

src/Runner.Worker/GlobalContext.cs

@@ -30,5 +30,6 @@ namespace GitHub.Runner.Worker
         public string InfrastructureFailureCategory { get; set; }
         public JObject ContainerHookState { get; set; }
         public bool HasTemplateEvaluatorMismatch { get; set; }
+        public bool HasActionManifestMismatch { get; set; }
     }
 }

src/Runner.Worker/Handlers/CompositeActionHandler.cs

@@ -187,7 +187,7 @@ namespace GitHub.Runner.Worker.Handlers
             if (Data.Outputs != null)
             {
                 // Evaluate the outputs in the steps context to easily retrieve the values
-                var actionManifestManager = HostContext.GetService<IActionManifestManager>();
+                var actionManifestManager = HostContext.GetService<IActionManifestManagerWrapper>();
 
                 // Format ExpressionValues to Dictionary<string, PipelineContextData>
                 var evaluateContext = new Dictionary<string, PipelineContextData>(StringComparer.OrdinalIgnoreCase);

src/Runner.Worker/Handlers/ContainerActionHandler.cs

@@ -135,7 +135,7 @@ namespace GitHub.Runner.Worker.Handlers
             var extraExpressionValues = new Dictionary<string, PipelineContextData>(StringComparer.OrdinalIgnoreCase);
             extraExpressionValues["inputs"] = inputsContext;
 
-            var manifestManager = HostContext.GetService<IActionManifestManager>();
+            var manifestManager = HostContext.GetService<IActionManifestManagerWrapper>();
             if (Data.Arguments != null)
             {
                 container.ContainerEntryPointArgs = "";

src/Sdk/Sdk.csproj

@@ -13,6 +13,10 @@
         <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
     </PropertyGroup>
 
+    <ItemGroup>
+        <InternalsVisibleTo Include="Test" />
+    </ItemGroup>
+
     <ItemGroup>
         <PackageReference Include="Azure.Storage.Blobs" Version="12.26.0" />
         <PackageReference Include="Microsoft.Win32.Registry" Version="5.0.0" />

src/Test/L0/Worker/ActionManagerL0.cs

@@ -2504,14 +2504,20 @@ runs:
             _pluginManager = new Mock<IRunnerPluginManager>();
             _pluginManager.Setup(x => x.GetPluginAction(It.IsAny<string>())).Returns(new RunnerPluginActionInfo() { PluginTypeName = "plugin.class, plugin", PostPluginTypeName = "plugin.cleanup, plugin" });
 
-            var actionManifest = new ActionManifestManager();
-            actionManifest.Initialize(_hc);
+            var actionManifestLegacy = new ActionManifestManagerLegacy();
+            actionManifestLegacy.Initialize(_hc);
+            _hc.SetSingleton<IActionManifestManagerLegacy>(actionManifestLegacy);
+            var actionManifestNew = new ActionManifestManager();
+            actionManifestNew.Initialize(_hc);
+            _hc.SetSingleton<IActionManifestManager>(actionManifestNew);
+            var actionManifestWrapper = new ActionManifestManagerWrapper();
+            actionManifestWrapper.Initialize(_hc);
 
             _hc.SetSingleton<IDockerCommandManager>(_dockerManager.Object);
             _hc.SetSingleton<IJobServer>(_jobServer.Object);
             _hc.SetSingleton<ILaunchServer>(_launchServer.Object);
             _hc.SetSingleton<IRunnerPluginManager>(_pluginManager.Object);
-            _hc.SetSingleton<IActionManifestManager>(actionManifest);
+            _hc.SetSingleton<IActionManifestManagerWrapper>(actionManifestWrapper);
             _hc.SetSingleton<IHttpClientHandlerFactory>(new HttpClientHandlerFactory());
 
             _configurationStore = new Mock<IConfigurationStore>();

src/Test/L0/Worker/ActionManifestManagerL0.cs

@@ -1,9 +1,11 @@
-using GitHub.DistributedTask.Expressions2;
-using GitHub.DistributedTask.ObjectTemplating.Tokens;
-using GitHub.DistributedTask.Pipelines.ContextData;
+using GitHub.Actions.Expressions;
+using GitHub.Actions.WorkflowParser.ObjectTemplating.Tokens;
+using GitHub.Actions.Expressions.Data;
 using GitHub.DistributedTask.WebApi;
 using GitHub.Runner.Worker;
-using GitHub.Runner.Worker.Expressions;
+using GitHub.Actions.WorkflowParser;
+using LegacyContextData = GitHub.DistributedTask.Pipelines.ContextData;
+using LegacyExpressions = GitHub.DistributedTask.Expressions2;
 using Moq;
 using System;
 using System.Collections.Generic;
@@ -49,7 +51,7 @@ namespace GitHub.Runner.Common.Tests.Worker
 
                 Assert.Equal(ActionExecutionType.Container, result.Execution.ExecutionType);
 
-                var containerAction = result.Execution as ContainerActionExecutionData;
+                var containerAction = result.Execution as ContainerActionExecutionDataNew;
 
                 Assert.Equal("Dockerfile", containerAction.Image);
                 Assert.Equal("main.sh", containerAction.EntryPoint);
@@ -93,7 +95,7 @@ namespace GitHub.Runner.Common.Tests.Worker
 
                 Assert.Equal(ActionExecutionType.Container, result.Execution.ExecutionType);
 
-                var containerAction = result.Execution as ContainerActionExecutionData;
+                var containerAction = result.Execution as ContainerActionExecutionDataNew;
 
                 Assert.Equal("Dockerfile", containerAction.Image);
                 Assert.Equal("main.sh", containerAction.EntryPoint);
@@ -139,7 +141,7 @@ namespace GitHub.Runner.Common.Tests.Worker
 
                 Assert.Equal(ActionExecutionType.Container, result.Execution.ExecutionType);
 
-                var containerAction = result.Execution as ContainerActionExecutionData;
+                var containerAction = result.Execution as ContainerActionExecutionDataNew;
 
                 Assert.Equal("Dockerfile", containerAction.Image);
                 Assert.Equal("main.sh", containerAction.EntryPoint);
@@ -185,7 +187,7 @@ namespace GitHub.Runner.Common.Tests.Worker
 
                 Assert.Equal(ActionExecutionType.Container, result.Execution.ExecutionType);
 
-                var containerAction = result.Execution as ContainerActionExecutionData;
+                var containerAction = result.Execution as ContainerActionExecutionDataNew;
 
                 Assert.Equal("Dockerfile", containerAction.Image);
                 Assert.Equal("main.sh", containerAction.EntryPoint);
@@ -231,7 +233,7 @@ namespace GitHub.Runner.Common.Tests.Worker
 
                 Assert.Equal(ActionExecutionType.Container, result.Execution.ExecutionType);
 
-                var containerAction = result.Execution as ContainerActionExecutionData;
+                var containerAction = result.Execution as ContainerActionExecutionDataNew;
 
                 Assert.Equal("Dockerfile", containerAction.Image);
                 Assert.Equal("main.sh", containerAction.EntryPoint);
@@ -276,7 +278,7 @@ namespace GitHub.Runner.Common.Tests.Worker
 
                 Assert.Equal(ActionExecutionType.Container, result.Execution.ExecutionType);
 
-                var containerAction = result.Execution as ContainerActionExecutionData;
+                var containerAction = result.Execution as ContainerActionExecutionDataNew;
 
                 Assert.Equal("Dockerfile", containerAction.Image);
             }
@@ -314,7 +316,7 @@ namespace GitHub.Runner.Common.Tests.Worker
 
                 Assert.Equal(ActionExecutionType.Container, result.Execution.ExecutionType);
 
-                var containerAction = result.Execution as ContainerActionExecutionData;
+                var containerAction = result.Execution as ContainerActionExecutionDataNew;
 
                 Assert.Equal("Dockerfile", containerAction.Image);
                 Assert.Equal("main.sh", containerAction.EntryPoint);
@@ -357,7 +359,7 @@ namespace GitHub.Runner.Common.Tests.Worker
 
                 Assert.Equal(ActionExecutionType.Container, result.Execution.ExecutionType);
 
-                var containerAction = result.Execution as ContainerActionExecutionData;
+                var containerAction = result.Execution as ContainerActionExecutionDataNew;
 
                 Assert.Equal("docker://ubuntu:18.04", containerAction.Image);
                 Assert.Equal("main.sh", containerAction.EntryPoint);
@@ -826,10 +828,10 @@ namespace GitHub.Runner.Common.Tests.Worker
                 arguments.Add(new BasicExpressionToken(null, null, null, "inputs.greeting"));
                 arguments.Add(new StringToken(null, null, null, "test"));
 
-                var inputsContext = new DictionaryContextData();
-                inputsContext.Add("greeting", new StringContextData("hello"));
+                var inputsContext = new DictionaryExpressionData();
+                inputsContext.Add("greeting", new StringExpressionData("hello"));
 
-                var evaluateContext = new Dictionary<string, PipelineContextData>(StringComparer.OrdinalIgnoreCase);
+                var evaluateContext = new Dictionary<string, ExpressionData>(StringComparer.OrdinalIgnoreCase);
                 evaluateContext["inputs"] = inputsContext;
                 //Act
 
@@ -863,10 +865,10 @@ namespace GitHub.Runner.Common.Tests.Worker
                 environment.Add(new StringToken(null, null, null, "hello"), new BasicExpressionToken(null, null, null, "inputs.greeting"));
                 environment.Add(new StringToken(null, null, null, "test"), new StringToken(null, null, null, "test"));
 
-                var inputsContext = new DictionaryContextData();
-                inputsContext.Add("greeting", new StringContextData("hello"));
+                var inputsContext = new DictionaryExpressionData();
+                inputsContext.Add("greeting", new StringExpressionData("hello"));
 
-                var evaluateContext = new Dictionary<string, PipelineContextData>(StringComparer.OrdinalIgnoreCase);
+                var evaluateContext = new Dictionary<string, ExpressionData>(StringComparer.OrdinalIgnoreCase);
                 evaluateContext["inputs"] = inputsContext;
 
                 //Act
@@ -896,17 +898,17 @@ namespace GitHub.Runner.Common.Tests.Worker
                 var actionManifest = new ActionManifestManager();
                 actionManifest.Initialize(_hc);
 
-                _ec.Object.ExpressionValues["github"] = new DictionaryContextData
+                _ec.Object.ExpressionValues["github"] = new LegacyContextData.DictionaryContextData
                 {
-                    { "ref", new StringContextData("refs/heads/main") },
+                    { "ref", new LegacyContextData.StringContextData("refs/heads/main") },
                 };
-                _ec.Object.ExpressionValues["strategy"] = new DictionaryContextData();
-                _ec.Object.ExpressionValues["matrix"] = new DictionaryContextData();
-                _ec.Object.ExpressionValues["steps"] = new DictionaryContextData();
-                _ec.Object.ExpressionValues["job"] = new DictionaryContextData();
-                _ec.Object.ExpressionValues["runner"] = new DictionaryContextData();
-                _ec.Object.ExpressionValues["env"] = new DictionaryContextData();
-                _ec.Object.ExpressionFunctions.Add(new FunctionInfo<HashFilesFunction>("hashFiles", 1, 255));
+                _ec.Object.ExpressionValues["strategy"] = new LegacyContextData.DictionaryContextData();
+                _ec.Object.ExpressionValues["matrix"] = new LegacyContextData.DictionaryContextData();
+                _ec.Object.ExpressionValues["steps"] = new LegacyContextData.DictionaryContextData();
+                _ec.Object.ExpressionValues["job"] = new LegacyContextData.DictionaryContextData();
+                _ec.Object.ExpressionValues["runner"] = new LegacyContextData.DictionaryContextData();
+                _ec.Object.ExpressionValues["env"] = new LegacyContextData.DictionaryContextData();
+                _ec.Object.ExpressionFunctions.Add(new LegacyExpressions.FunctionInfo<GitHub.Runner.Worker.Expressions.HashFilesFunction>("hashFiles", 1, 255));
 
                 //Act
                 var result = actionManifest.EvaluateDefaultInput(_ec.Object, "testInput", new StringToken(null, null, null, "defaultValue"));
@@ -934,6 +936,9 @@ namespace GitHub.Runner.Common.Tests.Worker
             // Test host context.
             _hc = new TestHostContext(this, name);
 
+            var expressionValues = new LegacyContextData.DictionaryContextData();
+            var expressionFunctions = new List<LegacyExpressions.IFunctionInfo>();
+
             _ec = new Mock<IExecutionContext>();
             _ec.Setup(x => x.Global)
                 .Returns(new GlobalContext
@@ -943,8 +948,8 @@ namespace GitHub.Runner.Common.Tests.Worker
                     WriteDebug = true,
                 });
             _ec.Setup(x => x.CancellationToken).Returns(_ecTokenSource.Token);
-            _ec.Setup(x => x.ExpressionValues).Returns(new DictionaryContextData());
-            _ec.Setup(x => x.ExpressionFunctions).Returns(new List<IFunctionInfo>());
+            _ec.Setup(x => x.ExpressionValues).Returns(expressionValues);
+            _ec.Setup(x => x.ExpressionFunctions).Returns(expressionFunctions);
             _ec.Setup(x => x.Write(It.IsAny<string>(), It.IsAny<string>())).Callback((string tag, string message) => { _hc.GetTrace().Info($"{tag}{message}"); });
             _ec.Setup(x => x.AddIssue(It.IsAny<Issue>(), It.IsAny<ExecutionContextLogOptions>())).Callback((Issue issue, ExecutionContextLogOptions logOptions) => { _hc.GetTrace().Info($"[{issue.Type}]{logOptions.LogMessageOverride ?? issue.Message}"); });
         }

src/Test/L0/Worker/ActionManifestManagerLegacyL0.cs

@@ -0,0 +1,957 @@
+using GitHub.DistributedTask.Expressions2;
+using GitHub.DistributedTask.ObjectTemplating.Tokens;
+using GitHub.DistributedTask.Pipelines.ContextData;
+using GitHub.DistributedTask.WebApi;
+using GitHub.Runner.Worker;
+using GitHub.Runner.Worker.Expressions;
+using Moq;
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.IO;
+using System.Runtime.CompilerServices;
+using System.Threading;
+using Xunit;
+
+namespace GitHub.Runner.Common.Tests.Worker
+{
+    public sealed class ActionManifestManagerLegacyL0
+    {
+        private CancellationTokenSource _ecTokenSource;
+        private Mock<IExecutionContext> _ec;
+        private TestHostContext _hc;
+
+        [Fact]
+        [Trait("Level", "L0")]
+        [Trait("Category", "Worker")]
+        public void Load_ContainerAction_Dockerfile()
+        {
+            try
+            {
+                //Arrange
+                Setup();
+
+                var actionManifest = new ActionManifestManagerLegacy();
+                actionManifest.Initialize(_hc);
+
+                //Act
+                var result = actionManifest.Load(_ec.Object, Path.Combine(TestUtil.GetTestDataPath(), "dockerfileaction.yml"));
+
+                //Assert
+
+                Assert.Equal("Hello World", result.Name);
+                Assert.Equal("Greet the world and record the time", result.Description);
+                Assert.Equal(2, result.Inputs.Count);
+                Assert.Equal("greeting", result.Inputs[0].Key.AssertString("key").Value);
+                Assert.Equal("Hello", result.Inputs[0].Value.AssertString("value").Value);
+                Assert.Equal("entryPoint", result.Inputs[1].Key.AssertString("key").Value);
+                Assert.Equal("", result.Inputs[1].Value.AssertString("value").Value);
+
+                Assert.Equal(ActionExecutionType.Container, result.Execution.ExecutionType);
+
+                var containerAction = result.Execution as ContainerActionExecutionData;
+
+                Assert.Equal("Dockerfile", containerAction.Image);
+                Assert.Equal("main.sh", containerAction.EntryPoint);
+                Assert.Equal("bzz", containerAction.Arguments[0].ToString());
+                Assert.Equal("Token", containerAction.Environment[0].Key.ToString());
+                Assert.Equal("foo", containerAction.Environment[0].Value.ToString());
+                Assert.Equal("Url", containerAction.Environment[1].Key.ToString());
+                Assert.Equal("bar", containerAction.Environment[1].Value.ToString());
+            }
+            finally
+            {
+                Teardown();
+            }
+        }
+
+        [Fact]
+        [Trait("Level", "L0")]
+        [Trait("Category", "Worker")]
+        public void Load_ContainerAction_Dockerfile_Pre()
+        {
+            try
+            {
+                //Arrange
+                Setup();
+
+                var actionManifest = new ActionManifestManagerLegacy();
+                actionManifest.Initialize(_hc);
+
+                //Act
+                var result = actionManifest.Load(_ec.Object, Path.Combine(TestUtil.GetTestDataPath(), "dockerfileaction_init.yml"));
+
+                //Assert
+
+                Assert.Equal("Hello World", result.Name);
+                Assert.Equal("Greet the world and record the time", result.Description);
+                Assert.Equal(2, result.Inputs.Count);
+                Assert.Equal("greeting", result.Inputs[0].Key.AssertString("key").Value);
+                Assert.Equal("Hello", result.Inputs[0].Value.AssertString("value").Value);
+                Assert.Equal("entryPoint", result.Inputs[1].Key.AssertString("key").Value);
+                Assert.Equal("", result.Inputs[1].Value.AssertString("value").Value);
+
+                Assert.Equal(ActionExecutionType.Container, result.Execution.ExecutionType);
+
+                var containerAction = result.Execution as ContainerActionExecutionData;
+
+                Assert.Equal("Dockerfile", containerAction.Image);
+                Assert.Equal("main.sh", containerAction.EntryPoint);
+                Assert.Equal("init.sh", containerAction.Pre);
+                Assert.Equal("success()", containerAction.InitCondition);
+                Assert.Equal("bzz", containerAction.Arguments[0].ToString());
+                Assert.Equal("Token", containerAction.Environment[0].Key.ToString());
+                Assert.Equal("foo", containerAction.Environment[0].Value.ToString());
+                Assert.Equal("Url", containerAction.Environment[1].Key.ToString());
+                Assert.Equal("bar", containerAction.Environment[1].Value.ToString());
+            }
+            finally
+            {
+                Teardown();
+            }
+        }
+
+        [Fact]
+        [Trait("Level", "L0")]
+        [Trait("Category", "Worker")]
+        public void Load_ContainerAction_Dockerfile_Post()
+        {
+            try
+            {
+                //Arrange
+                Setup();
+
+                var actionManifest = new ActionManifestManagerLegacy();
+                actionManifest.Initialize(_hc);
+
+                //Act
+                var result = actionManifest.Load(_ec.Object, Path.Combine(TestUtil.GetTestDataPath(), "dockerfileaction_cleanup.yml"));
+
+                //Assert
+
+                Assert.Equal("Hello World", result.Name);
+                Assert.Equal("Greet the world and record the time", result.Description);
+                Assert.Equal(2, result.Inputs.Count);
+                Assert.Equal("greeting", result.Inputs[0].Key.AssertString("key").Value);
+                Assert.Equal("Hello", result.Inputs[0].Value.AssertString("value").Value);
+                Assert.Equal("entryPoint", result.Inputs[1].Key.AssertString("key").Value);
+                Assert.Equal("", result.Inputs[1].Value.AssertString("value").Value);
+
+                Assert.Equal(ActionExecutionType.Container, result.Execution.ExecutionType);
+
+                var containerAction = result.Execution as ContainerActionExecutionData;
+
+                Assert.Equal("Dockerfile", containerAction.Image);
+                Assert.Equal("main.sh", containerAction.EntryPoint);
+                Assert.Equal("cleanup.sh", containerAction.Post);
+                Assert.Equal("failure()", containerAction.CleanupCondition);
+                Assert.Equal("bzz", containerAction.Arguments[0].ToString());
+                Assert.Equal("Token", containerAction.Environment[0].Key.ToString());
+                Assert.Equal("foo", containerAction.Environment[0].Value.ToString());
+                Assert.Equal("Url", containerAction.Environment[1].Key.ToString());
+                Assert.Equal("bar", containerAction.Environment[1].Value.ToString());
+            }
+            finally
+            {
+                Teardown();
+            }
+        }
+
+        [Fact]
+        [Trait("Level", "L0")]
+        [Trait("Category", "Worker")]
+        public void Load_ContainerAction_Dockerfile_Pre_DefaultCondition()
+        {
+            try
+            {
+                //Arrange
+                Setup();
+
+                var actionManifest = new ActionManifestManagerLegacy();
+                actionManifest.Initialize(_hc);
+
+                //Act
+                var result = actionManifest.Load(_ec.Object, Path.Combine(TestUtil.GetTestDataPath(), "dockerfileaction_init_default.yml"));
+
+                //Assert
+
+                Assert.Equal("Hello World", result.Name);
+                Assert.Equal("Greet the world and record the time", result.Description);
+                Assert.Equal(2, result.Inputs.Count);
+                Assert.Equal("greeting", result.Inputs[0].Key.AssertString("key").Value);
+                Assert.Equal("Hello", result.Inputs[0].Value.AssertString("value").Value);
+                Assert.Equal("entryPoint", result.Inputs[1].Key.AssertString("key").Value);
+                Assert.Equal("", result.Inputs[1].Value.AssertString("value").Value);
+
+                Assert.Equal(ActionExecutionType.Container, result.Execution.ExecutionType);
+
+                var containerAction = result.Execution as ContainerActionExecutionData;
+
+                Assert.Equal("Dockerfile", containerAction.Image);
+                Assert.Equal("main.sh", containerAction.EntryPoint);
+                Assert.Equal("init.sh", containerAction.Pre);
+                Assert.Equal("always()", containerAction.InitCondition);
+                Assert.Equal("bzz", containerAction.Arguments[0].ToString());
+                Assert.Equal("Token", containerAction.Environment[0].Key.ToString());
+                Assert.Equal("foo", containerAction.Environment[0].Value.ToString());
+                Assert.Equal("Url", containerAction.Environment[1].Key.ToString());
+                Assert.Equal("bar", containerAction.Environment[1].Value.ToString());
+            }
+            finally
+            {
+                Teardown();
+            }
+        }
+
+        [Fact]
+        [Trait("Level", "L0")]
+        [Trait("Category", "Worker")]
+        public void Load_ContainerAction_Dockerfile_Post_DefaultCondition()
+        {
+            try
+            {
+                //Arrange
+                Setup();
+
+                var actionManifest = new ActionManifestManagerLegacy();
+                actionManifest.Initialize(_hc);
+
+                //Act
+                var result = actionManifest.Load(_ec.Object, Path.Combine(TestUtil.GetTestDataPath(), "dockerfileaction_cleanup_default.yml"));
+
+                //Assert
+
+                Assert.Equal("Hello World", result.Name);
+                Assert.Equal("Greet the world and record the time", result.Description);
+                Assert.Equal(2, result.Inputs.Count);
+                Assert.Equal("greeting", result.Inputs[0].Key.AssertString("key").Value);
+                Assert.Equal("Hello", result.Inputs[0].Value.AssertString("value").Value);
+                Assert.Equal("entryPoint", result.Inputs[1].Key.AssertString("key").Value);
+                Assert.Equal("", result.Inputs[1].Value.AssertString("value").Value);
+
+                Assert.Equal(ActionExecutionType.Container, result.Execution.ExecutionType);
+
+                var containerAction = result.Execution as ContainerActionExecutionData;
+
+                Assert.Equal("Dockerfile", containerAction.Image);
+                Assert.Equal("main.sh", containerAction.EntryPoint);
+                Assert.Equal("cleanup.sh", containerAction.Post);
+                Assert.Equal("always()", containerAction.CleanupCondition);
+                Assert.Equal("bzz", containerAction.Arguments[0].ToString());
+                Assert.Equal("Token", containerAction.Environment[0].Key.ToString());
+                Assert.Equal("foo", containerAction.Environment[0].Value.ToString());
+                Assert.Equal("Url", containerAction.Environment[1].Key.ToString());
+                Assert.Equal("bar", containerAction.Environment[1].Value.ToString());
+            }
+            finally
+            {
+                Teardown();
+            }
+        }
+
+        [Fact]
+        [Trait("Level", "L0")]
+        [Trait("Category", "Worker")]
+        public void Load_ContainerAction_NoArgsNoEnv()
+        {
+            try
+            {
+                //Arrange
+                Setup();
+
+                var actionManifest = new ActionManifestManagerLegacy();
+                actionManifest.Initialize(_hc);
+
+                //Act
+                var result = actionManifest.Load(_ec.Object, Path.Combine(TestUtil.GetTestDataPath(), "dockerfileaction_noargs_noenv_noentrypoint.yml"));
+
+                //Assert
+                Assert.Equal("Hello World", result.Name);
+                Assert.Equal("Greet the world and record the time", result.Description);
+                Assert.Equal(2, result.Inputs.Count);
+                Assert.Equal("greeting", result.Inputs[0].Key.AssertString("key").Value);
+                Assert.Equal("Hello", result.Inputs[0].Value.AssertString("value").Value);
+                Assert.Equal("entryPoint", result.Inputs[1].Key.AssertString("key").Value);
+                Assert.Equal("", result.Inputs[1].Value.AssertString("value").Value);
+
+                Assert.Equal(ActionExecutionType.Container, result.Execution.ExecutionType);
+
+                var containerAction = result.Execution as ContainerActionExecutionData;
+
+                Assert.Equal("Dockerfile", containerAction.Image);
+            }
+            finally
+            {
+                Teardown();
+            }
+        }
+
+        [Fact]
+        [Trait("Level", "L0")]
+        [Trait("Category", "Worker")]
+        public void Load_ContainerAction_Dockerfile_Expression()
+        {
+            try
+            {
+                //Arrange
+                Setup();
+
+                var actionManifest = new ActionManifestManagerLegacy();
+                actionManifest.Initialize(_hc);
+
+                //Act
+                var result = actionManifest.Load(_ec.Object, Path.Combine(TestUtil.GetTestDataPath(), "dockerfileaction_arg_env_expression.yml"));
+
+                //Assert
+
+                Assert.Equal("Hello World", result.Name);
+                Assert.Equal("Greet the world and record the time", result.Description);
+                Assert.Equal(2, result.Inputs.Count);
+                Assert.Equal("greeting", result.Inputs[0].Key.AssertString("key").Value);
+                Assert.Equal("Hello", result.Inputs[0].Value.AssertString("value").Value);
+                Assert.Equal("entryPoint", result.Inputs[1].Key.AssertString("key").Value);
+                Assert.Equal("", result.Inputs[1].Value.AssertString("value").Value);
+
+                Assert.Equal(ActionExecutionType.Container, result.Execution.ExecutionType);
+
+                var containerAction = result.Execution as ContainerActionExecutionData;
+
+                Assert.Equal("Dockerfile", containerAction.Image);
+                Assert.Equal("main.sh", containerAction.EntryPoint);
+                Assert.Equal("${{ inputs.greeting }}", containerAction.Arguments[0].ToString());
+                Assert.Equal("Token", containerAction.Environment[0].Key.ToString());
+                Assert.Equal("foo", containerAction.Environment[0].Value.ToString());
+                Assert.Equal("Url", containerAction.Environment[1].Key.ToString());
+                Assert.Equal("${{ inputs.entryPoint }}", containerAction.Environment[1].Value.ToString());
+            }
+            finally
+            {
+                Teardown();
+            }
+        }
+
+        [Fact]
+        [Trait("Level", "L0")]
+        [Trait("Category", "Worker")]
+        public void Load_ContainerAction_DockerHub()
+        {
+            try
+            {
+                //Arrange
+                Setup();
+
+                var actionManifest = new ActionManifestManagerLegacy();
+                actionManifest.Initialize(_hc);
+
+                //Act
+                var result = actionManifest.Load(_ec.Object, Path.Combine(TestUtil.GetTestDataPath(), "dockerhubaction.yml"));
+
+                //Assert
+                Assert.Equal("Hello World", result.Name);
+                Assert.Equal("Greet the world and record the time", result.Description);
+                Assert.Equal(2, result.Inputs.Count);
+                Assert.Equal("greeting", result.Inputs[0].Key.AssertString("key").Value);
+                Assert.Equal("Hello", result.Inputs[0].Value.AssertString("value").Value);
+                Assert.Equal("entryPoint", result.Inputs[1].Key.AssertString("key").Value);
+                Assert.Equal("", result.Inputs[1].Value.AssertString("value").Value);
+
+                Assert.Equal(ActionExecutionType.Container, result.Execution.ExecutionType);
+
+                var containerAction = result.Execution as ContainerActionExecutionData;
+
+                Assert.Equal("docker://ubuntu:18.04", containerAction.Image);
+                Assert.Equal("main.sh", containerAction.EntryPoint);
+                Assert.Equal("bzz", containerAction.Arguments[0].ToString());
+                Assert.Equal("Token", containerAction.Environment[0].Key.ToString());
+                Assert.Equal("foo", containerAction.Environment[0].Value.ToString());
+                Assert.Equal("Url", containerAction.Environment[1].Key.ToString());
+                Assert.Equal("bar", containerAction.Environment[1].Value.ToString());
+            }
+            finally
+            {
+                Teardown();
+            }
+        }
+
+        [Fact]
+        [Trait("Level", "L0")]
+        [Trait("Category", "Worker")]
+        public void Load_NodeAction()
+        {
+            try
+            {
+                //Arrange
+                Setup();
+
+                var actionManifest = new ActionManifestManagerLegacy();
+                actionManifest.Initialize(_hc);
+
+                //Act
+                var result = actionManifest.Load(_ec.Object, Path.Combine(TestUtil.GetTestDataPath(), "nodeaction.yml"));
+
+                //Assert
+                Assert.Equal("Hello World", result.Name);
+                Assert.Equal("Greet the world and record the time", result.Description);
+                Assert.Equal(2, result.Inputs.Count);
+                Assert.Equal("greeting", result.Inputs[0].Key.AssertString("key").Value);
+                Assert.Equal("Hello", result.Inputs[0].Value.AssertString("value").Value);
+                Assert.Equal("entryPoint", result.Inputs[1].Key.AssertString("key").Value);
+                Assert.Equal("", result.Inputs[1].Value.AssertString("value").Value);
+                Assert.Equal(1, result.Deprecated.Count);
+
+                Assert.True(result.Deprecated.ContainsKey("greeting"));
+                result.Deprecated.TryGetValue("greeting", out string value);
+                Assert.Equal("This property has been deprecated", value);
+
+                Assert.Equal(ActionExecutionType.NodeJS, result.Execution.ExecutionType);
+
+                var nodeAction = result.Execution as NodeJSActionExecutionData;
+
+                Assert.Equal("main.js", nodeAction.Script);
+                Assert.Equal("node12", nodeAction.NodeVersion);
+            }
+            finally
+            {
+                Teardown();
+            }
+        }
+
+        [Fact]
+        [Trait("Level", "L0")]
+        [Trait("Category", "Worker")]
+        public void Load_Node16Action()
+        {
+            try
+            {
+                //Arrange
+                Setup();
+
+                var actionManifest = new ActionManifestManagerLegacy();
+                actionManifest.Initialize(_hc);
+
+                //Act
+                var result = actionManifest.Load(_ec.Object, Path.Combine(TestUtil.GetTestDataPath(), "node16action.yml"));
+
+                //Assert
+                Assert.Equal("Hello World", result.Name);
+                Assert.Equal("Greet the world and record the time", result.Description);
+                Assert.Equal(2, result.Inputs.Count);
+                Assert.Equal("greeting", result.Inputs[0].Key.AssertString("key").Value);
+                Assert.Equal("Hello", result.Inputs[0].Value.AssertString("value").Value);
+                Assert.Equal("entryPoint", result.Inputs[1].Key.AssertString("key").Value);
+                Assert.Equal("", result.Inputs[1].Value.AssertString("value").Value);
+                Assert.Equal(1, result.Deprecated.Count);
+
+                Assert.True(result.Deprecated.ContainsKey("greeting"));
+                result.Deprecated.TryGetValue("greeting", out string value);
+                Assert.Equal("This property has been deprecated", value);
+
+                Assert.Equal(ActionExecutionType.NodeJS, result.Execution.ExecutionType);
+
+                var nodeAction = result.Execution as NodeJSActionExecutionData;
+
+                Assert.Equal("main.js", nodeAction.Script);
+                Assert.Equal("node16", nodeAction.NodeVersion);
+            }
+            finally
+            {
+                Teardown();
+            }
+        }
+
+        [Fact]
+        [Trait("Level", "L0")]
+        [Trait("Category", "Worker")]
+        public void Load_Node20Action()
+        {
+            try
+            {
+                //Arrange
+                Setup();
+
+                var actionManifest = new ActionManifestManagerLegacy();
+                actionManifest.Initialize(_hc);
+
+                //Act
+                var result = actionManifest.Load(_ec.Object, Path.Combine(TestUtil.GetTestDataPath(), "node20action.yml"));
+
+                //Assert
+                Assert.Equal("Hello World", result.Name);
+                Assert.Equal("Greet the world and record the time", result.Description);
+                Assert.Equal(2, result.Inputs.Count);
+                Assert.Equal("greeting", result.Inputs[0].Key.AssertString("key").Value);
+                Assert.Equal("Hello", result.Inputs[0].Value.AssertString("value").Value);
+                Assert.Equal("entryPoint", result.Inputs[1].Key.AssertString("key").Value);
+                Assert.Equal("", result.Inputs[1].Value.AssertString("value").Value);
+                Assert.Equal(1, result.Deprecated.Count);
+
+                Assert.True(result.Deprecated.ContainsKey("greeting"));
+                result.Deprecated.TryGetValue("greeting", out string value);
+                Assert.Equal("This property has been deprecated", value);
+
+                Assert.Equal(ActionExecutionType.NodeJS, result.Execution.ExecutionType);
+
+                var nodeAction = result.Execution as NodeJSActionExecutionData;
+
+                Assert.Equal("main.js", nodeAction.Script);
+                Assert.Equal("node20", nodeAction.NodeVersion);
+            }
+            finally
+            {
+                Teardown();
+            }
+        }
+
+         [Fact]
+        [Trait("Level", "L0")]
+        [Trait("Category", "Worker")]
+        public void Load_Node24Action()
+        {
+            try
+            {
+                //Arrange
+                Setup();
+
+                var actionManifest = new ActionManifestManagerLegacy();
+                actionManifest.Initialize(_hc);
+
+                //Act
+                var result = actionManifest.Load(_ec.Object, Path.Combine(TestUtil.GetTestDataPath(), "node24action.yml"));
+
+                //Assert
+                Assert.Equal("Hello World", result.Name);
+                Assert.Equal("Greet the world and record the time", result.Description);
+                Assert.Equal(2, result.Inputs.Count);
+                Assert.Equal("greeting", result.Inputs[0].Key.AssertString("key").Value);
+                Assert.Equal("Hello", result.Inputs[0].Value.AssertString("value").Value);
+                Assert.Equal("entryPoint", result.Inputs[1].Key.AssertString("key").Value);
+                Assert.Equal("", result.Inputs[1].Value.AssertString("value").Value);
+                Assert.Equal(1, result.Deprecated.Count);
+
+                Assert.True(result.Deprecated.ContainsKey("greeting"));
+                result.Deprecated.TryGetValue("greeting", out string value);
+                Assert.Equal("This property has been deprecated", value);
+
+                Assert.Equal(ActionExecutionType.NodeJS, result.Execution.ExecutionType);
+
+                var nodeAction = result.Execution as NodeJSActionExecutionData;
+
+                Assert.Equal("main.js", nodeAction.Script);
+                Assert.Equal("node24", nodeAction.NodeVersion);
+            }
+            finally
+            {
+                Teardown();
+            }
+        }
+
+        [Fact]
+        [Trait("Level", "L0")]
+        [Trait("Category", "Worker")]
+        public void Load_NodeAction_Pre()
+        {
+            try
+            {
+                //Arrange
+                Setup();
+
+                var actionManifest = new ActionManifestManagerLegacy();
+                actionManifest.Initialize(_hc);
+
+                //Act
+                var result = actionManifest.Load(_ec.Object, Path.Combine(TestUtil.GetTestDataPath(), "nodeaction_init.yml"));
+
+                //Assert
+                Assert.Equal("Hello World", result.Name);
+                Assert.Equal("Greet the world and record the time", result.Description);
+                Assert.Equal(2, result.Inputs.Count);
+                Assert.Equal("greeting", result.Inputs[0].Key.AssertString("key").Value);
+                Assert.Equal("Hello", result.Inputs[0].Value.AssertString("value").Value);
+                Assert.Equal("entryPoint", result.Inputs[1].Key.AssertString("key").Value);
+                Assert.Equal("", result.Inputs[1].Value.AssertString("value").Value);
+                Assert.Equal(1, result.Deprecated.Count);
+
+                Assert.True(result.Deprecated.ContainsKey("greeting"));
+                result.Deprecated.TryGetValue("greeting", out string value);
+                Assert.Equal("This property has been deprecated", value);
+
+                Assert.Equal(ActionExecutionType.NodeJS, result.Execution.ExecutionType);
+
+                var nodeAction = result.Execution as NodeJSActionExecutionData;
+
+                Assert.Equal("main.js", nodeAction.Script);
+                Assert.Equal("init.js", nodeAction.Pre);
+                Assert.Equal("cancelled()", nodeAction.InitCondition);
+            }
+            finally
+            {
+                Teardown();
+            }
+        }
+
+        [Fact]
+        [Trait("Level", "L0")]
+        [Trait("Category", "Worker")]
+        public void Load_NodeAction_Init_DefaultCondition()
+        {
+            try
+            {
+                //Arrange
+                Setup();
+
+                var actionManifest = new ActionManifestManagerLegacy();
+                actionManifest.Initialize(_hc);
+
+                //Act
+                var result = actionManifest.Load(_ec.Object, Path.Combine(TestUtil.GetTestDataPath(), "nodeaction_init_default.yml"));
+
+                //Assert
+                Assert.Equal("Hello World", result.Name);
+                Assert.Equal("Greet the world and record the time", result.Description);
+                Assert.Equal(2, result.Inputs.Count);
+                Assert.Equal("greeting", result.Inputs[0].Key.AssertString("key").Value);
+                Assert.Equal("Hello", result.Inputs[0].Value.AssertString("value").Value);
+                Assert.Equal("entryPoint", result.Inputs[1].Key.AssertString("key").Value);
+                Assert.Equal("", result.Inputs[1].Value.AssertString("value").Value);
+                Assert.Equal(1, result.Deprecated.Count);
+
+                Assert.True(result.Deprecated.ContainsKey("greeting"));
+                result.Deprecated.TryGetValue("greeting", out string value);
+                Assert.Equal("This property has been deprecated", value);
+
+                Assert.Equal(ActionExecutionType.NodeJS, result.Execution.ExecutionType);
+
+                var nodeAction = result.Execution as NodeJSActionExecutionData;
+
+                Assert.Equal("main.js", nodeAction.Script);
+                Assert.Equal("init.js", nodeAction.Pre);
+                Assert.Equal("always()", nodeAction.InitCondition);
+            }
+            finally
+            {
+                Teardown();
+            }
+        }
+
+        [Fact]
+        [Trait("Level", "L0")]
+        [Trait("Category", "Worker")]
+        public void Load_NodeAction_Cleanup()
+        {
+            try
+            {
+                //Arrange
+                Setup();
+
+                var actionManifest = new ActionManifestManagerLegacy();
+                actionManifest.Initialize(_hc);
+
+                //Act
+                var result = actionManifest.Load(_ec.Object, Path.Combine(TestUtil.GetTestDataPath(), "nodeaction_cleanup.yml"));
+
+                //Assert
+                Assert.Equal("Hello World", result.Name);
+                Assert.Equal("Greet the world and record the time", result.Description);
+                Assert.Equal(2, result.Inputs.Count);
+                Assert.Equal("greeting", result.Inputs[0].Key.AssertString("key").Value);
+                Assert.Equal("Hello", result.Inputs[0].Value.AssertString("value").Value);
+                Assert.Equal("entryPoint", result.Inputs[1].Key.AssertString("key").Value);
+                Assert.Equal("", result.Inputs[1].Value.AssertString("value").Value);
+                Assert.Equal(1, result.Deprecated.Count);
+
+                Assert.True(result.Deprecated.ContainsKey("greeting"));
+                result.Deprecated.TryGetValue("greeting", out string value);
+                Assert.Equal("This property has been deprecated", value);
+
+                Assert.Equal(ActionExecutionType.NodeJS, result.Execution.ExecutionType);
+
+                var nodeAction = result.Execution as NodeJSActionExecutionData;
+
+                Assert.Equal("main.js", nodeAction.Script);
+                Assert.Equal("cleanup.js", nodeAction.Post);
+                Assert.Equal("cancelled()", nodeAction.CleanupCondition);
+            }
+            finally
+            {
+                Teardown();
+            }
+        }
+
+        [Fact]
+        [Trait("Level", "L0")]
+        [Trait("Category", "Worker")]
+        public void Load_NodeAction_Cleanup_DefaultCondition()
+        {
+            try
+            {
+                //Arrange
+                Setup();
+
+                var actionManifest = new ActionManifestManagerLegacy();
+                actionManifest.Initialize(_hc);
+
+                //Act
+                var result = actionManifest.Load(_ec.Object, Path.Combine(TestUtil.GetTestDataPath(), "nodeaction_cleanup_default.yml"));
+
+                //Assert
+                Assert.Equal("Hello World", result.Name);
+                Assert.Equal("Greet the world and record the time", result.Description);
+                Assert.Equal(2, result.Inputs.Count);
+                Assert.Equal("greeting", result.Inputs[0].Key.AssertString("key").Value);
+                Assert.Equal("Hello", result.Inputs[0].Value.AssertString("value").Value);
+                Assert.Equal("entryPoint", result.Inputs[1].Key.AssertString("key").Value);
+                Assert.Equal("", result.Inputs[1].Value.AssertString("value").Value);
+                Assert.Equal(1, result.Deprecated.Count);
+
+                Assert.True(result.Deprecated.ContainsKey("greeting"));
+                result.Deprecated.TryGetValue("greeting", out string value);
+                Assert.Equal("This property has been deprecated", value);
+
+                Assert.Equal(ActionExecutionType.NodeJS, result.Execution.ExecutionType);
+
+                var nodeAction = result.Execution as NodeJSActionExecutionData;
+
+                Assert.Equal("main.js", nodeAction.Script);
+                Assert.Equal("cleanup.js", nodeAction.Post);
+                Assert.Equal("always()", nodeAction.CleanupCondition);
+            }
+            finally
+            {
+                Teardown();
+            }
+        }
+
+        [Fact]
+        [Trait("Level", "L0")]
+        [Trait("Category", "Worker")]
+        public void Load_PluginAction()
+        {
+            try
+            {
+                //Arrange
+                Setup();
+
+                var actionManifest = new ActionManifestManagerLegacy();
+                actionManifest.Initialize(_hc);
+
+                //Act
+                var result = actionManifest.Load(_ec.Object, Path.Combine(TestUtil.GetTestDataPath(), "pluginaction.yml"));
+
+                //Assert
+                Assert.Equal("Hello World", result.Name);
+                Assert.Equal("Greet the world and record the time", result.Description);
+                Assert.Equal(2, result.Inputs.Count);
+                Assert.Equal("greeting", result.Inputs[0].Key.AssertString("key").Value);
+                Assert.Equal("Hello", result.Inputs[0].Value.AssertString("value").Value);
+                Assert.Equal("entryPoint", result.Inputs[1].Key.AssertString("key").Value);
+                Assert.Equal("", result.Inputs[1].Value.AssertString("value").Value);
+
+                Assert.Equal(ActionExecutionType.Plugin, result.Execution.ExecutionType);
+
+                var pluginAction = result.Execution as PluginActionExecutionData;
+
+                Assert.Equal("someplugin", pluginAction.Plugin);
+            }
+            finally
+            {
+                Teardown();
+            }
+        }
+
+        [Fact]
+        [Trait("Level", "L0")]
+        [Trait("Category", "Worker")]
+        public void Load_ConditionalCompositeAction()
+        {
+            try
+            {
+                //Arrange
+                Setup();
+
+                var actionManifest = new ActionManifestManagerLegacy();
+                actionManifest.Initialize(_hc);
+
+                //Act
+                var result = actionManifest.Load(_ec.Object, Path.Combine(TestUtil.GetTestDataPath(), "conditional_composite_action.yml"));
+
+                //Assert
+                Assert.Equal("Conditional Composite", result.Name);
+                Assert.Equal(ActionExecutionType.Composite, result.Execution.ExecutionType);
+            }
+            finally
+            {
+                Teardown();
+            }
+        }
+
+        [Fact]
+        [Trait("Level", "L0")]
+        [Trait("Category", "Worker")]
+        public void Load_CompositeActionNoUsing()
+        {
+            try
+            {
+                //Arrange
+                Setup();
+
+                var actionManifest = new ActionManifestManagerLegacy();
+                actionManifest.Initialize(_hc);
+                var action_path = Path.Combine(TestUtil.GetTestDataPath(), "composite_action_without_using_token.yml");
+
+                //Assert
+                var err = Assert.Throws<ArgumentException>(() => actionManifest.Load(_ec.Object, action_path));
+                Assert.Contains($"Failed to load {action_path}", err.Message);
+                _ec.Verify(x => x.AddIssue(It.Is<Issue>(s => s.Message.Contains("Missing 'using' value. 'using' requires 'composite', 'docker', 'node12', 'node16', 'node20' or 'node24'.")), It.IsAny<ExecutionContextLogOptions>()), Times.Once);
+            }
+            finally
+            {
+                Teardown();
+            }
+        }
+
+        [Fact]
+        [Trait("Level", "L0")]
+        [Trait("Category", "Worker")]
+        public void Evaluate_ContainerAction_Args()
+        {
+            try
+            {
+                //Arrange
+                Setup();
+
+                var actionManifest = new ActionManifestManagerLegacy();
+                actionManifest.Initialize(_hc);
+
+                var arguments = new SequenceToken(null, null, null);
+                arguments.Add(new BasicExpressionToken(null, null, null, "inputs.greeting"));
+                arguments.Add(new StringToken(null, null, null, "test"));
+
+                var inputsContext = new DictionaryContextData();
+                inputsContext.Add("greeting", new StringContextData("hello"));
+
+                var evaluateContext = new Dictionary<string, PipelineContextData>(StringComparer.OrdinalIgnoreCase);
+                evaluateContext["inputs"] = inputsContext;
+                //Act
+
+                var result = actionManifest.EvaluateContainerArguments(_ec.Object, arguments, evaluateContext);
+
+                //Assert
+                Assert.Equal("hello", result[0]);
+                Assert.Equal("test", result[1]);
+                Assert.Equal(2, result.Count);
+            }
+            finally
+            {
+                Teardown();
+            }
+        }
+
+        [Fact]
+        [Trait("Level", "L0")]
+        [Trait("Category", "Worker")]
+        public void Evaluate_ContainerAction_Env()
+        {
+            try
+            {
+                //Arrange
+                Setup();
+
+                var actionManifest = new ActionManifestManagerLegacy();
+                actionManifest.Initialize(_hc);
+
+                var environment = new MappingToken(null, null, null);
+                environment.Add(new StringToken(null, null, null, "hello"), new BasicExpressionToken(null, null, null, "inputs.greeting"));
+                environment.Add(new StringToken(null, null, null, "test"), new StringToken(null, null, null, "test"));
+
+                var inputsContext = new DictionaryContextData();
+                inputsContext.Add("greeting", new StringContextData("hello"));
+
+                var evaluateContext = new Dictionary<string, PipelineContextData>(StringComparer.OrdinalIgnoreCase);
+                evaluateContext["inputs"] = inputsContext;
+
+                //Act
+                var result = actionManifest.EvaluateContainerEnvironment(_ec.Object, environment, evaluateContext);
+
+                //Assert
+                Assert.Equal("hello", result["hello"]);
+                Assert.Equal("test", result["test"]);
+                Assert.Equal(2, result.Count);
+            }
+            finally
+            {
+                Teardown();
+            }
+        }
+
+        [Fact]
+        [Trait("Level", "L0")]
+        [Trait("Category", "Worker")]
+        public void Evaluate_Default_Input()
+        {
+            try
+            {
+                //Arrange
+                Setup();
+
+                var actionManifest = new ActionManifestManagerLegacy();
+                actionManifest.Initialize(_hc);
+
+                _ec.Object.ExpressionValues["github"] = new DictionaryContextData
+                {
+                    { "ref", new StringContextData("refs/heads/main") },
+                };
+                _ec.Object.ExpressionValues["strategy"] = new DictionaryContextData();
+                _ec.Object.ExpressionValues["matrix"] = new DictionaryContextData();
+                _ec.Object.ExpressionValues["steps"] = new DictionaryContextData();
+                _ec.Object.ExpressionValues["job"] = new DictionaryContextData();
+                _ec.Object.ExpressionValues["runner"] = new DictionaryContextData();
+                _ec.Object.ExpressionValues["env"] = new DictionaryContextData();
+                _ec.Object.ExpressionFunctions.Add(new FunctionInfo<HashFilesFunction>("hashFiles", 1, 255));
+
+                //Act
+                var result = actionManifest.EvaluateDefaultInput(_ec.Object, "testInput", new StringToken(null, null, null, "defaultValue"));
+
+                //Assert
+                Assert.Equal("defaultValue", result);
+
+                //Act
+                result = actionManifest.EvaluateDefaultInput(_ec.Object, "testInput", new BasicExpressionToken(null, null, null, "github.ref"));
+
+                //Assert
+                Assert.Equal("refs/heads/main", result);
+            }
+            finally
+            {
+                Teardown();
+            }
+        }
+
+        private void Setup([CallerMemberName] string name = "")
+        {
+            _ecTokenSource?.Dispose();
+            _ecTokenSource = new CancellationTokenSource();
+
+            // Test host context.
+            _hc = new TestHostContext(this, name);
+
+            _ec = new Mock<IExecutionContext>();
+            _ec.Setup(x => x.Global)
+                .Returns(new GlobalContext
+                {
+                    FileTable = new List<String>(),
+                    Variables = new Variables(_hc, new Dictionary<string, VariableValue>()),
+                    WriteDebug = true,
+                });
+            _ec.Setup(x => x.CancellationToken).Returns(_ecTokenSource.Token);
+            _ec.Setup(x => x.ExpressionValues).Returns(new DictionaryContextData());
+            _ec.Setup(x => x.ExpressionFunctions).Returns(new List<IFunctionInfo>());
+            _ec.Setup(x => x.Write(It.IsAny<string>(), It.IsAny<string>())).Callback((string tag, string message) => { _hc.GetTrace().Info($"{tag}{message}"); });
+            _ec.Setup(x => x.AddIssue(It.IsAny<Issue>(), It.IsAny<ExecutionContextLogOptions>())).Callback((Issue issue, ExecutionContextLogOptions logOptions) => { _hc.GetTrace().Info($"[{issue.Type}]{logOptions.LogMessageOverride ?? issue.Message}"); });
+        }
+
+        private void Teardown()
+        {
+            _hc?.Dispose();
+        }
+    }
+}

src/Test/L0/Worker/ActionRunnerL0.cs

@@ -25,7 +25,7 @@ namespace GitHub.Runner.Common.Tests.Worker
         private Mock<IExecutionContext> _ec;
         private TestHostContext _hc;
         private ActionRunner _actionRunner;
-        private IActionManifestManager _actionManifestManager;
+        private IActionManifestManagerWrapper _actionManifestManager;
         private Mock<IFileCommandManager> _fileCommandManager;
 
         private DictionaryContextData _context = new();
@@ -459,9 +459,16 @@ namespace GitHub.Runner.Common.Tests.Worker
 
             _handlerFactory = new Mock<IHandlerFactory>();
             _defaultStepHost = new Mock<IDefaultStepHost>();
-            _actionManifestManager = new ActionManifestManager();
-            _fileCommandManager = new Mock<IFileCommandManager>();
+            
+            var actionManifestLegacy = new ActionManifestManagerLegacy();
+            actionManifestLegacy.Initialize(_hc);
+            _hc.SetSingleton<IActionManifestManagerLegacy>(actionManifestLegacy);
+            var actionManifestNew = new ActionManifestManager();
+            actionManifestNew.Initialize(_hc);
+            _hc.SetSingleton<IActionManifestManager>(actionManifestNew);
+            _actionManifestManager = new ActionManifestManagerWrapper();
             _actionManifestManager.Initialize(_hc);
+            _fileCommandManager = new Mock<IFileCommandManager>();
 
             var githubContext = new GitHubContext();
             githubContext.Add("event", JToken.Parse("{\"foo\":\"bar\"}").ToPipelineContextData());
@@ -489,7 +496,7 @@ namespace GitHub.Runner.Common.Tests.Worker
 
             _hc.SetSingleton<IActionManager>(_actionManager.Object);
             _hc.SetSingleton<IHandlerFactory>(_handlerFactory.Object);
-            _hc.SetSingleton<IActionManifestManager>(_actionManifestManager);
+            _hc.SetSingleton<IActionManifestManagerWrapper>(_actionManifestManager);
 
             _hc.EnqueueInstance<IDefaultStepHost>(_defaultStepHost.Object);