👀 Views: 1 💬 Answers: 1 📅 Created: 2025-06-08

azure-data-factory azure-functions json C#

I'm upgrading from an older version and I'm attempting to set up Quick question that's been bugging me - I'm currently trying to set up an Azure Data Factory (ADF) pipeline that utilizes an Azure Function to process data and return a JSON response. However, when I try to invoke the Azure Function through a Web Activity, I'm getting a frustrating 'Invalid JSON' behavior. Here's the setup: my Azure Function is written in C# and returns a JSON object like this: ```csharp [FunctionName("MyFunction")] public static async Task<IActionResult> Run( [HttpTrigger(AuthorizationLevel.Function, "get", "post", Route = null)] HttpRequest req, ILogger log) { var response = new { status = "success", data = new[] { 1, 2, 3 } }; return new JsonResult(response); } ``` In my ADF pipeline, I have a Web Activity configured to invoke this function with the following settings: - URL: `https://<myfunctionapp>.azurewebsites.net/api/MyFunction?code=<function_key>` - Method: `GET` When I run the pipeline, I see the behavior message in the output pane, which states: '**Invalid JSON returned from the service.**' I've verified that the function works correctly when I test it directly via Postman, and it returns a valid JSON response. I also tried adjusting the headers in the Web Activity to include `Content-Type: application/json`, but that didn't change anything. Additionally, I checked that the output of the Azure Function is indeed valid JSON using tools like JSONLint. I'm at a loss as to why ADF is not recognizing the output as valid JSON. Any insights or suggestions for troubleshooting this scenario would be greatly appreciated! This is part of a larger application I'm building. Has anyone else encountered this? Thanks for taking the time to read this!