Fix API returning 500 after a successful reingest

src/protagonist/API/Infrastructure/Messaging/AssetNotificationSender.cs

@@ -19,7 +19,10 @@ public class AssetNotificationSender : IAssetNotificationSender
     private readonly ILogger<AssetNotificationSender> logger;
     private readonly ITopicPublisher topicPublisher;
     private readonly IPathCustomerRepository customerPathRepository;
-    private readonly JsonSerializerOptions settings = new(JsonSerializerDefaults.Web);
+    private readonly JsonSerializerOptions settings = new(JsonSerializerDefaults.Web)
+    {
+        ReferenceHandler = ReferenceHandler.IgnoreCycles
+    };
 
     private readonly Dictionary<int, CustomerPathElement> customerPathElements = new();
 
@@ -103,8 +106,6 @@ private async Task<string> GetSerialisedAssetCreatedNotification(Asset modifiedA
             CustomerPathElement = customerPathElement
         };
 
-        modifiedAsset = RefreshImageDeliveryChannelsForAsset(modifiedAsset);
-
         return JsonSerializer.Serialize(request, settings);
     }
 
@@ -119,9 +120,6 @@ private async Task<string> GetSerialisedAssetUpdatedNotification(Asset modifiedA
             CustomerPathElement = customerPathElement
         };
 
-        request.AssetBeforeUpdate = RefreshImageDeliveryChannelsForAsset(request.AssetBeforeUpdate);
-        request.AssetAfterUpdate = RefreshImageDeliveryChannelsForAsset(request.AssetAfterUpdate);
-
         return JsonSerializer.Serialize(request, settings);
     }
 
@@ -145,20 +143,4 @@ private async Task<bool> SendAssetModifiedRequest(Dictionary<ChangeType, List<st
 
         return await topicPublisher.PublishToAssetModifiedTopic(toSend, cancellationToken);
     }
-
-
-    private Asset RefreshImageDeliveryChannelsForAsset(Asset asset)
-    {
-        if (!asset.ImageDeliveryChannels.IsNullOrEmpty())
-        {
-            asset.ImageDeliveryChannels =  asset.ImageDeliveryChannels.Select(x => new ImageDeliveryChannel()
-            {
-                ImageId = x.ImageId,
-                Channel = x.Channel,
-                DeliveryChannelPolicyId = x.DeliveryChannelPolicyId
-            }).ToList();
-        }
-
-        return asset;
-    }
 }

src/protagonist/DLCS.Repository.Tests/Messaging/EngineClientTests.cs

@@ -5,15 +5,12 @@
 using System.Text.Json.Serialization;
 using System.Threading;
 using DLCS.AWS.SQS;
-using DLCS.Core.Settings;
 using DLCS.Core.Types;
 using DLCS.Model.Assets;
 using DLCS.Model.Messaging;
 using DLCS.Repository.Messaging;
 using FakeItEasy;
 using Microsoft.Extensions.Logging.Abstractions;
-using Microsoft.Extensions.Options;
-using Newtonsoft.Json.Linq;
 using Test.Helpers.Http;
 
 namespace DLCS.Repository.Tests.Messaging;
@@ -37,12 +34,7 @@ public EngineClientTests()
         queueLookup = A.Fake<IQueueLookup>();
         queueSender = A.Fake<IQueueSender>();
 
-        var engineClientOptions = Options.Create(new DlcsSettings
-        {
-            EngineRoot = new Uri("http://engine.dlcs/")
-        });
-
-        sut = new EngineClient(queueLookup, queueSender, httpClient, engineClientOptions, new NullLogger<EngineClient>());
+        sut = new EngineClient(queueLookup, queueSender, httpClient, new NullLogger<EngineClient>());
     }
 
     [Fact]

src/protagonist/DLCS.Repository/Messaging/EngineClient.cs

@@ -10,11 +10,9 @@
 using System.Threading;
 using System.Threading.Tasks;
 using DLCS.AWS.SQS;
-using DLCS.Core.Settings;
 using DLCS.Model.Assets;
 using DLCS.Model.Messaging;
 using Microsoft.Extensions.Logging;
-using Microsoft.Extensions.Options;
 
 namespace DLCS.Repository.Messaging;
 
@@ -27,7 +25,6 @@ public class EngineClient : IEngineClient
     private readonly IQueueSender queueSender;
     private readonly HttpClient httpClient;
     private readonly ILogger<EngineClient> logger;
-    private readonly DlcsSettings dlcsSettings;
 
     private static readonly JsonSerializerOptions SerializerOptions = new (JsonSerializerDefaults.Web)
     {
@@ -38,14 +35,12 @@ public EngineClient(
         IQueueLookup queueLookup,
         IQueueSender queueSender,
         HttpClient httpClient,
-        IOptions<DlcsSettings> dlcsSettings,
         ILogger<EngineClient> logger)
     {
         this.queueLookup = queueLookup;
         this.queueSender = queueSender;
         this.httpClient = httpClient;
         this.logger = logger;
-        this.dlcsSettings = dlcsSettings.Value;
     }
 
     public async Task<HttpStatusCode> SynchronousIngest(Asset asset, CancellationToken cancellationToken = default)
@@ -87,18 +82,16 @@ public async Task<bool> AsynchronousIngest(Asset asset,
         CancellationToken cancellationToken = default)
     {
         var queueName = queueLookup.GetQueueNameForFamily(asset.Family ?? new AssetFamily());
-        var ingestAssetRequest = new IngestAssetRequest(asset.Id, DateTime.UtcNow);
-
         var jsonString = GetJsonString(asset);
         var success = await queueSender.QueueMessage(queueName, jsonString, cancellationToken);
 
         if (!success)
         {
-            logger.LogInformation("Error queueing ingest request {IngestRequest}", ingestAssetRequest);
+            logger.LogInformation("Error queueing ingest request for {AssetId}", asset.Id);
         }
         else
         {
-            logger.LogDebug("Successfully enqueued ingest request {IngestRequest}", ingestAssetRequest);
+            logger.LogDebug("Successfully enqueued ingest request for {AssetId}", asset.Id);
         }
 
         return success;
@@ -156,8 +149,6 @@ public async Task<int> AsynchronousIngestBatch(IReadOnlyCollection<Asset> assets
     private string GetJsonString(Asset asset)
     {
         var ingestAssetRequest = new IngestAssetRequest(asset.Id, DateTime.UtcNow);
-
-        // Otherwise, it should contain only the Asset ID - for now, this is an Asset object containing just the ID
         var jsonString = JsonSerializer.Serialize(ingestAssetRequest, SerializerOptions);
         return jsonString;
     }