Sync dev branch from main

.autover/changes/0529a49e-6b48-4eea-874b-1a5c2be8b029.json

@@ -0,0 +1,18 @@
+{
+  "Projects": [
+    {
+      "Name": "AWS.Messaging",
+      "Type": "Patch",
+      "ChangelogMessages": [
+        "Fix issue with fifo when a message is failed to process the later messages are not retried"
+      ]
+    },
+	{
+      "Name": "AWS.Messaging.Lambda",
+      "Type": "Patch",
+      "ChangelogMessages": [
+        "Update AWS.Messaging dependency"
+      ]
+    }	
+  ]
+}

.autover/changes/cb641346-f9f6-414d-be09-90ea0b8366a7.json

@@ -0,0 +1,25 @@
+{
+    "Projects": [
+      {
+        "Name": "AWS.Messaging",
+        "Type": "Patch",
+        "ChangelogMessages": [
+          "Update User-Agent string"
+        ]
+      },
+      {
+        "Name": "AWS.Messaging.Lambda",
+        "Type": "Patch",
+        "ChangelogMessages": [
+          "Update project dependencies"
+        ]
+      },
+      {
+        "Name": "AWS.Messaging.Telemetry.OpenTelemetry",
+        "Type": "Patch",
+        "ChangelogMessages": [
+          "Update project dependencies"
+        ]
+      }
+    ]
+  }

.github/ISSUE_TEMPLATE/bug-report.yml

@@ -12,6 +12,14 @@ body:
       description: What is the problem? A clear and concise description of the bug.
     validations:
       required: true
+  - type: checkboxes
+    id: regression
+    attributes:
+      label: Regression Issue
+      description: What is a regression? If it worked in a previous version but doesn't in the latest version, it's considered a regression. In this case, please provide specific version number in the report.
+      options:
+        - label: Select this option if this issue appears to be a regression.
+          required: false
   - type: textarea
     id: expected
     attributes:

.github/workflows/BuildandTest.yml

@@ -15,6 +15,10 @@ jobs:
       uses: actions/setup-dotnet@4d6c8fcf3c8f7a60068d26b594648e99df24cee3 # pinning V4
       with:
         dotnet-version: 6.0.x
+    - name: Setup .NET Core 8.0
+      uses: actions/setup-dotnet@4d6c8fcf3c8f7a60068d26b594648e99df24cee3 # pinning V4
+      with:
+        dotnet-version: 8.0.x
     - name: Restore dependencies
       run: dotnet restore
     - name: Build

.github/workflows/issue-regression-labeler.yml

@@ -0,0 +1,32 @@
+# Apply potential regression label on issues
+name: issue-regression-label
+on:
+  issues:
+    types: [opened, edited]
+jobs:
+  add-regression-label:
+    runs-on: ubuntu-latest
+    permissions:
+      issues: write
+    steps:
+    - name: Fetch template body
+      id: check_regression
+      uses: actions/github-script@v7
+      env: 
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        TEMPLATE_BODY: ${{ github.event.issue.body }}
+      with:
+        script: |
+          const regressionPattern = /\[x\] Select this option if this issue appears to be a regression\./i;
+          const template = `${process.env.TEMPLATE_BODY}`
+          const match = regressionPattern.test(template);
+          core.setOutput('is_regression', match);
+    - name: Manage regression label
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      run: |
+        if [ "${{ steps.check_regression.outputs.is_regression }}" == "true" ]; then
+          gh issue edit ${{ github.event.issue.number }} --add-label "potential-regression" -R ${{ github.repository }}
+        else
+          gh issue edit ${{ github.event.issue.number }} --remove-label "potential-regression" -R ${{ github.repository }}
+        fi

src/AWS.Messaging/Services/DefaultMessageManager.cs

@@ -133,12 +133,19 @@ public async Task ProcessMessageGroupAsync(List<ConvertToEnvelopeResult> message
             var remaining = messageGroup.Count;
 
             // Sequentially process each message within the group
-            foreach (var message in messageGroup)
+            for(var i = 0; i < messageGroup.Count; i++)
             {
+                var message = messageGroup[i];
+
                 var isSuccessful = await InvokeHandler(message.Envelope, message.Mapping, token);
                 if (!isSuccessful)
                 {
-                    // If the handler invocation fails for any message, skip processing subsequent messages in the group.
+                    // If the handler invocation fails for any message, report failure for the rest in the group so they are reported back to Lambda
+                    // as not failure that should be retried. Otherwise Lambda will think the messages were successfully processed and delete the messages.
+                    for (var unprocessedIndex = i + 1; unprocessedIndex < messageGroup.Count; unprocessedIndex++)
+                    {
+                        await _sqsMessageCommunication.ReportMessageFailureAsync(messageGroup[unprocessedIndex].Envelope, token);
+                    }
                     _logger.LogError("Handler invocation failed for a message belonging to message group '{GroupdId}' having message ID '{MessageID}'. Skipping processing of {Remaining} messages from the same group.", groupId, message.Envelope.Id, remaining);
                     break;
                 }

test/AWS.Messaging.UnitTests/LambdaTests.cs

@@ -105,15 +105,44 @@ public async Task MessageHandlerReturnsFailedStatusBatchResponse()
             Id = "failed-message-1",
             ReturnFailedStatus = true
         };
+        var secondMessage = new SimulatedMessage
+        {
+            Id = "second-message-1",
+            ReturnFailedStatus = false
+        };
 
-        var tuple = await ExecuteWithBatchResponse(new SimulatedMessage[] { failedMessage });
+        var tuple = await ExecuteWithBatchResponse(new SimulatedMessage[] { failedMessage, secondMessage });
         _mockSqs!.Verify(
             expression: x => x.ChangeMessageVisibilityAsync(It.IsAny<ChangeMessageVisibilityRequest>(), It.IsAny<CancellationToken>()),
             times: Times.Never);
         Assert.Single(tuple.batchResponse.BatchItemFailures);
         Assert.Equal("1", tuple.batchResponse.BatchItemFailures[0].ItemIdentifier);
     }
 
+    [Fact]
+    public async Task MessageHandlerReturnsFailedStatusBatchResponseFifo()
+    {
+        var failedMessage = new SimulatedMessage
+        {            
+            Id = "failed-message-1",
+            ReturnFailedStatus = true,
+            MessageGroupId = "group1"
+        };
+        var secondMessage = new SimulatedMessage
+        {
+            Id = "second-message-1",
+            ReturnFailedStatus = false,
+            MessageGroupId = "group1"
+        };
+
+        var tuple = await ExecuteWithBatchResponse(new SimulatedMessage[] { failedMessage, secondMessage }, isFifoQueue: true);
+        _mockSqs!.Verify(
+            expression: x => x.ChangeMessageVisibilityAsync(It.IsAny<ChangeMessageVisibilityRequest>(), It.IsAny<CancellationToken>()),
+            times: Times.Never);
+        Assert.Equal(2, tuple.batchResponse.BatchItemFailures.Count);
+        Assert.Equal("1", tuple.batchResponse.BatchItemFailures[0].ItemIdentifier);
+    }
+
     [Fact]
     public async Task MessageHandlerResetsVisibilityWhenFailedStatusBatchResponse()
     {
@@ -304,13 +333,14 @@ private async Task<string> Execute(SimulatedMessage[] messages, int maxNumberOfC
         SimulatedMessage[] messages,
         int maxNumberOfConcurrentMessages = 1,
         bool deleteMessagesWhenCompleted = false,
-        int? visibilityTimeoutForBatchFailures = default)
+        int? visibilityTimeoutForBatchFailures = default,
+        bool isFifoQueue = false)
     {
         var provider = CreateServiceProvider(
             maxNumberOfConcurrentMessages: maxNumberOfConcurrentMessages,
             deleteMessagesWhenCompleted: deleteMessagesWhenCompleted,
-            visibilityTimeoutForBatchFailures: visibilityTimeoutForBatchFailures);
-        var sqsEvent = await CreateLambdaEvent(provider, messages);
+            visibilityTimeoutForBatchFailures: visibilityTimeoutForBatchFailures, isFifoQueue: isFifoQueue);
+        var sqsEvent = await CreateLambdaEvent(provider, messages, isFifoQueue: isFifoQueue);
 
         var logger = new TestLambdaLogger();
         var context = new TestLambdaContext()