Fix consumption of event payload (elsa-workflows#4909)

The 'input' parameter in 'PublishAsync', 'DispatchAsync' and related methods across multiple classes has been replaced with 'payload'. The renaming of 'input' to 'payload' provides a more intuitive understanding of the parameter as the actual content or data of the event being published or dispatched. It also includes changes in 'PublishInternalAsync' where the workflow input dictionary is now being populated with the payload.

src/bundles/Elsa.Server.Web/Program.cs

@@ -71,7 +71,6 @@
  .AddWorkflowsFrom<Program>()
  .UseFluentStorageProvider()
  .UseFileStorage()
- // .UseFileStorage(sp => StorageFactory.Blobs.AzureBlobStorageWithSas(configuration.GetConnectionString("AzureStorageSasUrl")))
  .UseIdentity(identity =>
  {
  if (useMongoDb)

src/modules/Elsa.Workflows.Runtime/Activities/Event.cs

@@ -16,6 +16,8 @@ namespace Elsa.Workflows.Runtime.Activities;
 [UsedImplicitly]
 public class Event : Trigger<object?>
 {
+ internal const string EventPayloadWorkflowInputKey = "__EventPayloadWorkflowInput";
+
  /// <inheritdoc />
  internal Event([CallerFilePath] string? source = default, [CallerLineNumber] int? line = default) : base(source, line)
  {
@@ -79,6 +81,8 @@ protected override async ValueTask ExecuteAsync(ActivityExecutionContext context
  return;
  }
 
+ var input = context.GetWorkflowInput<object?>(EventPayloadWorkflowInputKey);
+ context.SetResult(input);
  await context.CompleteActivityAsync();
  }
 }

src/modules/Elsa.Workflows.Runtime/Activities/PublishEvent.cs

@@ -40,8 +40,8 @@ public PublishEvent([CallerFilePath] string? source = default, [CallerLineNumber
  /// <summary>
  /// The input to send as the event body.
  /// </summary>
- [Input(Description = "The input to send as the event body.")]
- public Input<IDictionary<string, object>?> Input { get; set; } = default!;
+ [Input(Description = "The payload to send as the event body.")]
+ public Input<object> Payload { get; set; } = default!;
 
  /// <inheritdoc />
  protected override async ValueTask ExecuteAsync(ActivityExecutionContext context)
@@ -50,10 +50,10 @@ protected override async ValueTask ExecuteAsync(ActivityExecutionContext context
  var correlationId = CorrelationId.GetOrDefault(context);
  var isLocalEvent = IsLocalEvent.GetOrDefault(context);
  var workflowInstanceId = isLocalEvent ? context.WorkflowExecutionContext.Id : default;
- var input = Input.GetOrDefault(context);
+ var payload = Payload.GetOrDefault(context);
  var publisher = context.GetRequiredService<IEventPublisher>();
-
- await publisher.DispatchAsync(eventName, correlationId, workflowInstanceId, null, input, context.CancellationToken);
+ 
+ await publisher.DispatchAsync(eventName, correlationId, workflowInstanceId, null, payload, context.CancellationToken);
  await context.CompleteActivityAsync();
  }
 }

src/modules/Elsa.Workflows.Runtime/Contracts/IEventPublisher.cs

@@ -11,10 +11,10 @@ public interface IEventPublisher
  /// <summary>
  /// Synchronously publishes the specified event using the workflow runtime, effectively triggering all <see cref="Event"/> activities matching the provided event name.
  /// </summary>
- Task<ICollection<WorkflowExecutionResult>> PublishAsync(string eventName, string? correlationId = default, string? workflowInstanceId = default, string? activityInstanceId = default, IDictionary<string, object>? input = default, CancellationToken cancellationToken = default);
+ Task<ICollection<WorkflowExecutionResult>> PublishAsync(string eventName, string? correlationId = default, string? workflowInstanceId = default, string? activityInstanceId = default, object? payload = default, CancellationToken cancellationToken = default);
 
  /// <summary>
  /// Asynchronously publishes the specified event using the workflow dispatcher.
  /// </summary>
- Task DispatchAsync(string eventName, string? correlationId = default, string? workflowInstanceId = default, string? activityInstanceId = default, IDictionary<string, object>? input = default, CancellationToken cancellationToken = default);
+ Task DispatchAsync(string eventName, string? correlationId = default, string? workflowInstanceId = default, string? activityInstanceId = default, object? payload = default, CancellationToken cancellationToken = default);
 }

src/modules/Elsa.Workflows.Runtime/Services/EventPublisher.cs

@@ -28,10 +28,10 @@ public EventPublisher(IWorkflowInbox workflowInbox)
  string? correlationId = default,
  string? workflowInstanceId = default,
  string? activityInstanceId = default,
- IDictionary<string, object>? input = default,
+ object? payload = default,
  CancellationToken cancellationToken = default)
  {
- return await PublishInternalAsync(eventName, false, correlationId, workflowInstanceId, activityInstanceId, input, cancellationToken);
+ return await PublishInternalAsync(eventName, false, correlationId, workflowInstanceId, activityInstanceId, payload, cancellationToken);
  }
 
  /// <inheritdoc />
@@ -40,10 +40,10 @@ public EventPublisher(IWorkflowInbox workflowInbox)
  string? correlationId = default,
  string? workflowInstanceId = default,
  string? activityInstanceId = default,
- IDictionary<string, object>? input = default,
+ object? payload = default,
  CancellationToken cancellationToken = default)
  {
- await PublishInternalAsync(eventName, true, correlationId, workflowInstanceId, activityInstanceId, input, cancellationToken);
+ await PublishInternalAsync(eventName, true, correlationId, workflowInstanceId, activityInstanceId, payload, cancellationToken);
  }
 
  private async Task<ICollection<WorkflowExecutionResult>> PublishInternalAsync(
@@ -52,11 +52,15 @@ public EventPublisher(IWorkflowInbox workflowInbox)
  string? correlationId = default,
  string? workflowInstanceId = default,
  string? activityInstanceId = default,
- IDictionary<string, object>? input = default,
+ object? payload = default,
  CancellationToken cancellationToken = default)
  {
  var eventBookmark = new EventBookmarkPayload(eventName);
- var message = NewWorkflowInboxMessage.For<Event>(eventBookmark, workflowInstanceId, correlationId, activityInstanceId, input);
+ var workflowInput = new Dictionary<string, object>
+ {
+ [Event.EventPayloadWorkflowInputKey] = payload ?? new Dictionary<string, object>()
+ };
+ var message = NewWorkflowInboxMessage.For<Event>(eventBookmark, workflowInstanceId, correlationId, activityInstanceId, workflowInput);
  var options = new WorkflowInboxMessageDeliveryOptions
  {
  DispatchAsynchronously = dispatchAsynchronously