Queue Prefix setting is not being considered in the AwsLambdaSQSEndpoint

src/NServiceBus.AwsLambda.SQS.AcceptanceTests/AwsLambdaSQSEndpointTestBase.cs

@@ -22,24 +22,24 @@ class AwsLambdaSQSEndpointTestBase
         protected const string DelayedDeliveryQueueSuffix = "-delay.fifo";
         const int QueueDelayInSeconds = 900; // 15 * 60
 
-        protected string QueueName { get; set; }
+        protected string QueueName { get; private set; }
 
-        protected string DelayQueueName { get; set; }
+        protected string DelayQueueName { get; private set; }
 
-        protected string ErrorQueueName { get; set; }
+        protected string ErrorQueueName { get; private set; }
 
         protected string QueueNamePrefix { get; set; }
 
         protected string BucketName { get; } = Environment.GetEnvironmentVariable("NSERVICEBUS_AMAZONSQS_S3BUCKET");
-        protected string KeyPrefix { get; set; }
+        protected string KeyPrefix { get; private set; }
 
 
         [SetUp]
-        public async Task Setup()
+        public virtual async Task Setup()
         {
             queueNames = new List<string>();
 
-            QueueNamePrefix = Path.GetFileNameWithoutExtension(Path.GetRandomFileName()).ToLowerInvariant();
+            QueueNamePrefix ??= Path.GetFileNameWithoutExtension(Path.GetRandomFileName()).ToLowerInvariant();
 
             QueueName = $"{QueueNamePrefix}testqueue";
             sqsClient = CreateSQSClient();
@@ -78,6 +78,9 @@ public async Task Setup()
         [TearDown]
         public async Task TearDown()
         {
+            // clear queue name prefix after each test, otherwise classes with multiple tests in the same class will run into issues
+            QueueNamePrefix = null;
+
             var queueUrls = queueNames.Select(name => sqsClient.GetQueueUrlAsync(name));
             await Task.WhenAll(queueUrls);
             var queueDeletions = queueUrls.Select(x => x.Result.QueueUrl).Select(url => sqsClient.DeleteQueueAsync(url));
@@ -106,7 +109,7 @@ protected void RegisterQueueNameToCleanup(string queueName)
             queueNames.Add(queueName);
         }
 
-        protected async Task<SQSEvent> GenerateAndReceiveSQSEvent<T>(int count) where T : new()
+        protected async Task<SQSEvent> GenerateAndReceiveSQSEvent<T>(int count = 1) where T : new()
         {
             var endpointConfiguration = new EndpointConfiguration($"{QueueNamePrefix}sender");
             endpointConfiguration.SendOnly();

src/NServiceBus.AwsLambda.SQS.AcceptanceTests/When_configuring_queue_name_prefix.cs

@@ -0,0 +1,70 @@
+namespace NServiceBus.AcceptanceTests
+{
+    using Microsoft.Extensions.DependencyInjection;
+    using NUnit.Framework;
+    using System.IO;
+    using System.Threading.Tasks;
+
+    class When_configuring_queue_name_prefix : AwsLambdaSQSEndpointTestBase
+    {
+        public string Prefix { get; } = "test-";
+
+        public override Task Setup()
+        {
+            QueueNamePrefix = Prefix + Path.GetFileNameWithoutExtension(Path.GetRandomFileName()).ToLowerInvariant();
+            return base.Setup();
+        }
+
+        [Test]
+        public async Task The_message_should_be_received_from_prefixed_queue()
+        {
+            // the prefix will be configured using the transport's prefix configuration therefore we remove it for the endpoint name
+            var endpointName = QueueName.Substring(Prefix.Length);
+
+            var receivedMessages = await GenerateAndReceiveSQSEvent<SentMessage>();
+
+            var context = new TestContext();
+
+            var endpoint = new AwsLambdaSQSEndpoint(ctx =>
+            {
+                var configuration = new AwsLambdaSQSEndpointConfiguration(endpointName, CreateSQSClient(), CreateSNSClient());
+
+                configuration.Transport.QueueNamePrefix = Prefix;
+
+                var advanced = configuration.AdvancedConfiguration;
+                advanced.RegisterComponents(c => c.AddSingleton(typeof(TestContext), context));
+
+                // SQS will add the specified queue prefix to the configured error queue
+                advanced.SendFailedMessagesTo(ErrorQueueName.Substring(Prefix.Length));
+
+                return configuration;
+            });
+
+            await endpoint.Process(receivedMessages, null);
+
+            Assert.IsTrue(context.MessageHandled);
+        }
+
+        public class TestContext
+        {
+            public bool MessageHandled { get; set; }
+        }
+
+        public class SentMessage : ICommand
+        {
+        }
+
+        public class MessageHandlerThatReceivesSentMessage : IHandleMessages<SentMessage>
+        {
+            public MessageHandlerThatReceivesSentMessage(TestContext context) => testContext = context;
+
+            public Task Handle(SentMessage message, IMessageHandlerContext context)
+            {
+                testContext.MessageHandled = true;
+                return Task.CompletedTask;
+            }
+
+            readonly TestContext testContext;
+        }
+    }
+}

src/NServiceBus.AwsLambda.SQS.AcceptanceTests/When_message_fails_using_queue_prefix.cs

@@ -0,0 +1,68 @@
+namespace NServiceBus.AcceptanceTests;
+
+using System;
+using Microsoft.Extensions.DependencyInjection;
+using NUnit.Framework;
+using System.IO;
+using System.Linq;
+using System.Text.Json;
+using System.Threading.Tasks;
+
+class When_message_fails_using_queue_prefix : AwsLambdaSQSEndpointTestBase
+{
+    public string Prefix { get; } = "test-";
+
+    public override Task Setup()
+    {
+        QueueNamePrefix = Prefix + Path.GetFileNameWithoutExtension(Path.GetRandomFileName()).ToLowerInvariant();
+        return base.Setup();
+    }
+
+    [Test]
+    public async Task Should_move_message_to_prefixed_error_queue()
+    {
+        // the prefix will be configured using the transport's prefix configuration therefore we remove it for the endpoint name
+        var endpointName = QueueName.Substring(Prefix.Length);
+
+        var receivedMessages = await GenerateAndReceiveSQSEvent<TestMessage>();
+
+        var context = new TestContext();
+
+        var endpoint = new AwsLambdaSQSEndpoint(ctx =>
+        {
+            var configuration = new AwsLambdaSQSEndpointConfiguration(endpointName, CreateSQSClient(), CreateSNSClient());
+            configuration.Transport.QueueNamePrefix = Prefix;
+
+            var advanced = configuration.AdvancedConfiguration;
+            advanced.RegisterComponents(c => c.AddSingleton(typeof(TestContext), context));
+            advanced.Recoverability().Immediate(i => i.NumberOfRetries(0));
+
+            advanced.SendFailedMessagesTo(ErrorQueueName.Substring(Prefix.Length));
+
+            return configuration;
+        });
+
+        Assert.DoesNotThrowAsync(() => endpoint.Process(receivedMessages, null), "message should be moved to the error queue instead");
+
+        var errorMessages = await RetrieveMessagesInErrorQueue();
+        Assert.AreEqual(1, errorMessages.Records.Count);
+        JsonDocument errorMessage = JsonSerializer.Deserialize<JsonDocument>(errorMessages.Records.First().Body);
+        var errorMessageHeader = errorMessage.RootElement.GetProperty("Headers");
+        Assert.AreEqual("simulated exception", errorMessageHeader.GetProperty("NServiceBus.ExceptionInfo.Message").GetString());
+        Assert.AreEqual(endpointName, errorMessageHeader.GetProperty("NServiceBus.ProcessingEndpoint").GetString());
+        StringAssert.EndsWith(QueueName, errorMessageHeader.GetProperty("NServiceBus.FailedQ").GetString());
+    }
+
+    public class TestContext
+    {
+    }
+
+    public class TestMessage : ICommand
+    {
+    }
+
+    public class FailingMessageHandler : IHandleMessages<TestMessage>
+    {
+        public Task Handle(TestMessage message, IMessageHandlerContext context) => throw new Exception("simulated exception");
+    }
+}

src/NServiceBus.AwsLambda.SQS/AwsLambdaEndpoint.cs

@@ -13,7 +13,6 @@
     using Amazon.SQS.Model;
     using AwsLambda.SQS;
     using AwsLambda.SQS.TransportWrapper;
-    using Configuration.AdvancedExtensibility;
     using Extensibility;
     using Logging;
     using Transport;
@@ -42,7 +41,6 @@ await InitializeEndpointIfNecessary(lambdaContext, cancellationToken)
                 .ConfigureAwait(false);
 
             var processTasks = new List<Task>();
-
             foreach (var receivedMessage in @event.Records)
             {
                 processTasks.Add(ProcessMessage(receivedMessage, lambdaContext, cancellationToken));
@@ -62,15 +60,8 @@ await semaphoreLock.WaitAsync(token)
                 {
                     if (pipeline == null)
                     {
-                        var configuration = configurationFactory(executionContext);
-
-                        var serverlessTransport = await Initialize(configuration)
-                            .ConfigureAwait(false);
-
-                        endpoint = await Endpoint.Start(configuration.EndpointConfiguration, token)
-                            .ConfigureAwait(false);
-
-                        pipeline = serverlessTransport.PipelineInvoker;
+                        var transportInfrastructure = await Initialize(executionContext, token).ConfigureAwait(false);
+                        pipeline = transportInfrastructure.PipelineInvoker;
                     }
                 }
                 finally
@@ -80,6 +71,26 @@ await semaphoreLock.WaitAsync(token)
             }
         }
 
+        async Task<ServerlessTransportInfrastructure> Initialize(ILambdaContext executionContext, CancellationToken token)
+        {
+            var configuration = configurationFactory(executionContext);
+
+            sqsClient = configuration.Transport.SqsClient;
+            s3Settings = configuration.Transport.S3;
+
+            var serverlessTransport = new ServerlessTransport(configuration.Transport);
+            configuration.EndpointConfiguration.UseTransport(serverlessTransport);
+
+            endpoint = await Endpoint.Start(configuration.EndpointConfiguration, token).ConfigureAwait(false);
+
+            var transportInfrastructure = serverlessTransport.GetTransportInfrastructure(endpoint);
+
+            queueUrl = await GetQueueUrl(transportInfrastructure.PipelineInvoker.ReceiveAddress).ConfigureAwait(false);
+            errorQueueUrl = await GetQueueUrl(transportInfrastructure.ErrorQueueAddress).ConfigureAwait(false);
+
+            return transportInfrastructure;
+        }
+
         /// <inheritdoc />
         public async Task Send(object message, SendOptions options, ILambdaContext lambdaContext)
         {
@@ -192,35 +203,16 @@ await endpoint.Unsubscribe(eventType)
                 .ConfigureAwait(false);
         }
 
-        async Task<ServerlessTransport> Initialize(AwsLambdaSQSEndpointConfiguration configuration)
-        {
-            var settingsHolder = configuration.AdvancedConfiguration.GetSettings();
-
-            sqsClient = configuration.Transport.SqsClient;
-
-            queueUrl = await GetQueueUrl(settingsHolder.EndpointName())
-                .ConfigureAwait(false);
-            errorQueueUrl = await GetQueueUrl(settingsHolder.ErrorQueueAddress())
-                .ConfigureAwait(false);
-
-            s3Settings = configuration.Transport.S3;
-
-            var serverlessTransport = new ServerlessTransport(configuration.Transport);
-            configuration.EndpointConfiguration.UseTransport(serverlessTransport);
-
-            return serverlessTransport;
-        }
 
         async Task<string> GetQueueUrl(string queueName)
         {
-            var sanitizedQueueName = QueueNameHelper.GetSanitizedQueueName(queueName);
             try
             {
-                return (await sqsClient.GetQueueUrlAsync(sanitizedQueueName).ConfigureAwait(false)).QueueUrl;
+                return (await sqsClient.GetQueueUrlAsync(queueName).ConfigureAwait(false)).QueueUrl;
             }
             catch (Exception e)
             {
-                Logger.Error($"Failed to obtain the queue URL for queue {sanitizedQueueName} (derived from configured name {queueName}).", e);
+                Logger.Error($"Failed to obtain the queue URL for queue {queueName}.", e);
                 throw;
             }
         }

src/NServiceBus.AwsLambda.SQS/TransportWrapper/ServerlessTransport.cs

@@ -1,5 +1,6 @@
 namespace NServiceBus.AwsLambda.SQS.TransportWrapper
 {
+    using System;
     using System.Collections.Generic;
     using System.Threading;
     using System.Threading.Tasks;
@@ -8,29 +9,36 @@
 
     sealed class ServerlessTransport : TransportDefinition
     {
-        // HINT: This constant is defined in NServiceBus but is not exposed
-        const string MainReceiverId = "Main";
+        ServerlessTransportInfrastructure serverlessTransportInfrastructure;
 
         public ServerlessTransport(TransportDefinition baseTransport)
             : base(baseTransport.TransportTransactionMode, baseTransport.SupportsDelayedDelivery, baseTransport.SupportsPublishSubscribe, baseTransport.SupportsTTBR) =>
             BaseTransport = baseTransport;
 
         public TransportDefinition BaseTransport { get; }
 
-        public PipelineInvoker PipelineInvoker { get; private set; }
-
         public override async Task<TransportInfrastructure> Initialize(HostSettings hostSettings, ReceiveSettings[] receivers, string[] sendingAddresses, CancellationToken cancellationToken = default)
         {
+            if (receivers.Length == 0)
+            {
+                throw new Exception(
+                    "SendOnly endpoints are not supported in this version. Upgrade to a newer version of the NServiceBus.AwsLambda.SQS package to use SendOnly endpoints");
+            }
+
             var baseTransportInfrastructure = await BaseTransport.Initialize(hostSettings, receivers, sendingAddresses, cancellationToken)
                 .ConfigureAwait(false);
+            var errorQueueAddress = baseTransportInfrastructure.ToTransportAddress(new QueueAddress(receivers[0].ErrorQueue));
 
-            var serverlessTransportInfrastructure = new ServerlessTransportInfrastructure(baseTransportInfrastructure);
-            PipelineInvoker = (PipelineInvoker)serverlessTransportInfrastructure.Receivers[MainReceiverId];
+            serverlessTransportInfrastructure = new ServerlessTransportInfrastructure(baseTransportInfrastructure, errorQueueAddress);
 
             return serverlessTransportInfrastructure;
 
         }
 
+        public ServerlessTransportInfrastructure GetTransportInfrastructure(IEndpointInstance _) =>
+            // IEndpointInstance is only required to guarantee that GetTransportInfrastructure can't be called before NServiceBus called Initialize.
+            serverlessTransportInfrastructure;
+
 #pragma warning disable CS0672 // Member overrides obsolete member
 #pragma warning disable CS0618 // Type or member is obsolete