adding new fields to messages for external app executions

Signed-off-by: Neil South <[email protected]>

src/Messaging/Common/ExportRequestType.cs

@@ -0,0 +1,9 @@
+
+namespace Monai.Deploy.Messaging.Common
+{
+    public enum ExportRequestType
+    {
+        None = 0,
+        ExternalProcessing
+    }
+}

src/Messaging/Events/ExportRequestEvent.cs

@@ -15,6 +15,7 @@
  */
 
 using System.ComponentModel.DataAnnotations;
+using Monai.Deploy.Messaging.Common;
 using Newtonsoft.Json;
 
 namespace Monai.Deploy.Messaging.Events
@@ -75,6 +76,15 @@ public class ExportRequestEvent : EventBase
         /// </summary>
         public List<string> ErrorMessages { get; private set; }
 
+        /// <summary>
+        /// Gets or set the ExportRequest type.
+        /// For standard exports this will be ExportRequestType.None
+        /// but for exports to external apps this will be ExportRequestType.ExternalProcessing
+        /// </summary>
+        [JsonProperty(PropertyName = "export_request")]
+        [Required]
+        public ExportRequestType ExportRequest { get; set; } = default!;
+
         public ExportRequestEvent()
         {
             ErrorMessages = new List<string>();

src/Messaging/Events/WorkflowRequestEvent.cs

@@ -81,6 +81,14 @@ public class WorkflowRequestEvent : EventBase
         [Required]
         public DateTime Timestamp { get; set; }
 
+        /// <summary>
+        /// Sets the workflow instance ID for the Workflow Manager.
+        /// This is only applicable to resume events (after external app executions)
+        /// In standard workflows this will not be set
+        /// </summary>
+        [JsonProperty(PropertyName = "workflow_instance_id")]
+        public string? WorkflowInstanceId { get; set; } = default;
+
         /// <summary>
         /// Gets or sets a list of files and metadata files in this request.
         /// </summary>