Activity tag support

samples/ScheduleWebApp/Activities/CacheClearingActivity.cs

@@ -0,0 +1,17 @@
+// Copyright (c) Microsoft Corporation.
+// Licensed under the MIT License.
+
+using Microsoft.DurableTask;
+
+namespace ScheduleWebApp.Activities;
+
+[DurableTask] // Optional: enables code generation for type-safe calls
+public class CacheClearingActivity : TaskActivity<object, string>
+{
+    public override async Task<string> RunAsync(TaskActivityContext context, object input)
+    {
+        // Simulate cache clearing
+        await Task.Delay(TimeSpan.FromSeconds(5));
+        return "Cache cleared";
+    }
+}

samples/ScheduleWebApp/Orchestrations/CacheClearingOrchestrator.cs

@@ -2,6 +2,7 @@
 // Licensed under the MIT License.
 
 using Microsoft.DurableTask;
+using ScheduleWebApp.Activities;
 
 namespace ScheduleWebApp.Orchestrations;
 
@@ -14,8 +15,12 @@ public override async Task<string> RunAsync(TaskOrchestrationContext context, st
         {
             logger.LogInformation("Starting CacheClearingOrchestration for schedule ID: {ScheduleId}", scheduleId);
 
-            // Simulate cache clearing
-            await Task.Delay(TimeSpan.FromSeconds(5));
+            TaskOptions options = new TaskOptions(tags: new Dictionary<string, string>
+            {
+                { "scheduleId", scheduleId }
+            });
+
+            await context.CallActivityAsync(nameof(CacheClearingActivity), options);
 
             logger.LogInformation("CacheClearingOrchestration completed for schedule ID: {ScheduleId}", scheduleId);
 

samples/ScheduleWebApp/Program.cs

@@ -7,6 +7,7 @@
 using Microsoft.DurableTask.ScheduledTasks;
 using Microsoft.DurableTask.Worker;
 using Microsoft.DurableTask.Worker.AzureManaged;
+using ScheduleWebApp.Activities;
 using ScheduleWebApp.Orchestrations;
 
 WebApplicationBuilder builder = WebApplication.CreateBuilder(args);
@@ -19,13 +20,14 @@
 // Add all the generated orchestrations and activities automatically
 builder.Services.AddDurableTaskWorker(builder =>
 {
+    builder.UseDurableTaskScheduler(connectionString);
+    builder.UseScheduledTasks();
     builder.AddTasks(r =>
     {
         // Add your orchestrators and activities here
+        r.AddActivity<CacheClearingActivity>();
         r.AddOrchestrator<CacheClearingOrchestrator>();
     });
-    builder.UseDurableTaskScheduler(connectionString);
-    builder.UseScheduledTasks();
 });
 
 // Register the client, which can be used to start orchestrations

src/Abstractions/TaskOptions.cs

@@ -19,11 +19,27 @@ public TaskOptions(TaskRetryOptions? retry = null)
         this.Retry = retry;
     }
 
+    /// <summary>
+    /// Initializes a new instance of the <see cref="TaskOptions"/> class.
+    /// </summary>
+    /// <param name="retry">The task retry options.</param>
+    /// <param name="tags">The tags to associate with the task.</param>
+    public TaskOptions(TaskRetryOptions? retry = null, IDictionary<string, string>? tags = null)
+    {
+        this.Retry = retry;
+        this.Tags = tags;
+    }
+
     /// <summary>
     /// Gets the task retry options.
     /// </summary>
     public TaskRetryOptions? Retry { get; init; }
 
+    /// <summary>
+    /// Gets the tags to associate with the task.
+    /// </summary>
+    public IDictionary<string, string>? Tags { get; init; }
+
     /// <summary>
     /// Returns a new <see cref="TaskOptions" /> from the provided <see cref="RetryPolicy" />.
     /// </summary>

src/Shared/Grpc/ProtoUtils.cs

@@ -4,7 +4,6 @@
 using System.Buffers;
 using System.Buffers.Text;
 using System.Diagnostics.CodeAnalysis;
-using System.Runtime.CompilerServices;
 using System.Text;
 using DurableTask.Core;
 using DurableTask.Core.Command;
@@ -91,7 +90,10 @@ internal static HistoryEvent ConvertHistoryEvent(P.HistoryEvent proto, EntityCon
                     proto.EventId,
                     proto.TaskScheduled.Name,
                     proto.TaskScheduled.Version,
-                    proto.TaskScheduled.Input);
+                    proto.TaskScheduled.Input)
+                    {
+                        Tags = proto.TaskScheduled.Tags,
+                    };
                 break;
             case P.HistoryEvent.EventTypeOneofCase.TaskCompleted:
                 historyEvent = new TaskCompletedEvent(
@@ -304,6 +306,15 @@ internal static P.OrchestratorResponse ConstructOrchestratorResponse(
                         Version = scheduleTaskAction.Version,
                         Input = scheduleTaskAction.Input,
                     };
+
+                    if (scheduleTaskAction.Tags != null)
+                    {
+                        foreach (KeyValuePair<string, string> tag in scheduleTaskAction.Tags)
+                        {
+                            protoAction.ScheduleTask.Tags[tag.Key] = tag.Value;
+                        }
+                    }
+
                     break;
                 case OrchestratorActionType.CreateSubOrchestration:
                     var subOrchestrationAction = (CreateSubOrchestrationAction)action;

src/Worker/Core/Shims/TaskOrchestrationContextWrapper.cs

@@ -1,6 +1,7 @@
 // Copyright (c) Microsoft Corporation.
 // Licensed under the MIT License.
 
+using System.Collections.Immutable;
 using System.Globalization;
 using System.Security.Cryptography;
 using System.Text;
@@ -138,27 +139,51 @@ public override async Task<T> CallActivityAsync<T>(
 
         try
         {
+            IDictionary<string, string> tags = ImmutableDictionary<string, string>.Empty;
+            if (options is TaskOptions callActivityOptions)
+            {
+                if (callActivityOptions.Tags is not null)
+                {
+                    tags = callActivityOptions.Tags;
+                }
+            }
+
             // TODO: Cancellation (https://github.com/microsoft/durabletask-dotnet/issues/7)
 #pragma warning disable 0618
             if (options?.Retry?.Policy is RetryPolicy policy)
             {
-                return await this.innerContext.ScheduleWithRetry<T>(
+                return await this.innerContext.ScheduleTask<T>(
                     name.Name,
                     name.Version,
-                    policy.ToDurableTaskCoreRetryOptions(),
-                    input);
+                    options: ScheduleTaskOptions.CreateBuilder()
+                        .WithRetryOptions(policy.ToDurableTaskCoreRetryOptions())
+                        .WithTags(tags)
+                        .Build(),
+                    parameters: input);
             }
             else if (options?.Retry?.Handler is AsyncRetryHandler handler)
             {
                 return await this.InvokeWithCustomRetryHandler(
-                    () => this.innerContext.ScheduleTask<T>(name.Name, name.Version, input),
+                    () => this.innerContext.ScheduleTask<T>(
+                        name.Name,
+                        name.Version,
+                        options: ScheduleTaskOptions.CreateBuilder()
+                            .WithTags(tags)
+                            .Build(),
+                        parameters: input),
                     name.Name,
                     handler,
                     default);
             }
             else
             {
-                return await this.innerContext.ScheduleTask<T>(name.Name, name.Version, input);
+                return await this.innerContext.ScheduleTask<T>(
+                    name.Name,
+                    name.Version,
+                    options: ScheduleTaskOptions.CreateBuilder()
+                        .WithTags(tags)
+                        .Build(),
+                    parameters: input);
             }
         }
         catch (global::DurableTask.Core.Exceptions.TaskFailedException e)
@@ -492,7 +517,7 @@ string GetDefaultVersion()
         }
 
         // Secondary choice.
-        if (this.Properties.TryGetValue("defaultVersion", out var propVersion) && propVersion is string v2)
+        if (this.Properties.TryGetValue("defaultVersion", out object? propVersion) && propVersion is string v2)
         {
             return v2;
         }

test/Grpc.IntegrationTests/OrchestrationPatterns.cs

@@ -944,6 +944,42 @@ public async Task SubOrchestrationTaskVersionOverridesDefaultVersion(string over
         Assert.Equal($"Sub Orchestration version: {overrideVersion}", output);
     }
 
+    [Fact]
+    public async Task RunActivityWithTags()
+    {
+        TaskName orchestratorName = nameof(RunActivityWithTags);
+        TaskName taggedActivityName = "TaggedActivity";
+
+        await using HostTestLifetime server = await this.StartWorkerAsync(b =>
+        {
+            b.AddTasks(tasks => tasks
+                .AddOrchestratorFunc<string, string>(
+                    orchestratorName, (ctx, input) => ctx.CallActivityAsync<string>(taggedActivityName, input))
+                .AddActivityFunc<string, string>(taggedActivityName, (ctx, name) => $"Hello from tagged activity, {name}!"));
+        });
+
+        // Schedule orchestration with tags
+        StartOrchestrationOptions options = new()
+        {
+            Tags = new Dictionary<string, string>
+            {
+                { "activityTag", "taggedExecution" },
+                { "testType", "activityTagTest" }
+            }
+        };
+
+        string instanceId = await server.Client.ScheduleNewOrchestrationInstanceAsync(
+            orchestratorName, input: "World", options);
+
+        OrchestrationMetadata metadata = await server.Client.WaitForInstanceCompletionAsync(
+            instanceId, getInputsAndOutputs: true, this.TimeoutToken);
+
+        Assert.NotNull(metadata);
+        Assert.Equal(instanceId, metadata.InstanceId);
+        Assert.Equal(OrchestrationRuntimeStatus.Completed, metadata.RuntimeStatus);
+        Assert.Equal("Hello from tagged activity, World!", metadata.ReadOutputAs<string>());
+    }
+
     // TODO: Test for multiple external events with the same name
     // TODO: Test for ContinueAsNew with external events that carry over
     // TODO: Test for catching activity exceptions of specific types