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Azure Function with Event Grid Trigger Failing to Process Certain Events - Partial Failure Handling

πŸ‘€ Views: 0 πŸ’¬ Answers: 1 πŸ“… Created: 2025-09-01
azure-functions event-grid csharp C#

I keep running into I'm relatively new to this, so bear with me... I'm not sure how to approach This might be a silly question, but I tried several approaches but none seem to work... I've looked through the documentation and I'm still confused about I have an Azure Function that is triggered by Azure Event Grid events, but I'm experiencing issues with certain events not being processed correctly... The function is written in C# and is supposed to handle different types of events, but I'm getting intermittent failures. Specifically, the function is set up to process storage blob created events, and it fails with 'Event Grid Trigger: Invalid event type' for some events. Here’s part of my code: ```csharp using Microsoft.Azure.WebJobs; using Microsoft.Extensions.Logging; public static class BlobCreatedHandler { [FunctionName("BlobCreated")] public static void Run([EventGridTrigger] EventGridEvent eventGridEvent, ILogger log) { log.LogInformation($"Received event: {eventGridEvent.EventType}"); if (eventGridEvent.EventType != "Microsoft.Storage.BlobCreated") { log.LogError("Invalid event type: {EventType}", eventGridEvent.EventType); return; } // Process the event // ... } } ``` I've set up the event subscription correctly and verified that the Event Grid is sending the events, but I noticed that some events have a different schema than expected. This issue seems to occur with events generated by different clients, which may not conform to the schema I'm handling. I've been trying to log the incoming events to inspect their structure: ```csharp log.LogInformation($"Event data: {JsonConvert.SerializeObject(eventGridEvent.Data)}"); ``` However, I still can't determine why some events are coming in with unexpected types. I've checked the Azure documentation and confirmed that I'm using version 3.x of the Azure Functions SDK. Any ideas on how to handle these unexpected event types or how to make my function more resilient to schema changes? How would you solve this? Am I missing something obvious? I'm working on a service that needs to handle this. Any help would be greatly appreciated! I'm on Windows 11 using the latest version of C#. Is there a simpler solution I'm overlooking? Has anyone dealt with something similar?