CODEWITHSUNDEEP
authenticationazure-functionscustom-attributesauthorize-attributeazure-functions-isolated
Hari Krishna
Hari Krishna

Reputation: 83

Custom Authorization in Azure Functions v4 with .NET 7 isolated

I'm attempting to implement custom authorization in Azure Functions v4 using .NET 7 isolated process. Previously, there was the FunctionExecutingContext which could be used with attributes to handle custom authorization logic, but it's now marked as obsolete.

// Sample of the old approach
public sealed class AuthorizeAttribute : FunctionInvocationFilterAttribute
{
   public override void OnExecuting(FunctionExecutingContext executingContext)
   {
       // ... logic here ...
   }
}

With this no longer being recommended, what's the new way of handling this in Azure Functions v4 with .NET 6 isolated?

Any guidance or sample implementations would be greatly appreciated!

Upvotes: 2

Views: 2332

Answers (1)

SiddheshDesai
SiddheshDesai

Reputation: 8157

Instead of using FunctionExecutingContext, you can utilise FunctionContext in Azure Functions v4 with a.NET 7 isolated process to manage specific authorization.

The HttpRequestData object, which holds the HTTP request information for the currently invoked function, is accessible through the FunctionContext class. To add unique permission logic to your function code, utilise this object.

Reference1 and Document to get started with .Net 7 Isolate Functions

Sample Http Function code in .Net 7 Isolated framework:-

using System.Net;
using Microsoft.Azure.Functions.Worker;
using Microsoft.Azure.Functions.Worker.Http;
using Microsoft.Extensions.Logging;

namespace FunctionApp44
{
    public class Function1
    {
        private readonly ILogger _logger;

        public Function1(ILoggerFactory loggerFactory)
        {
            _logger = loggerFactory.CreateLogger<Function1>();
        }

        [Function("Function1")]
        public HttpResponseData Run([HttpTrigger(AuthorizationLevel.Function, "get", "post")] HttpRequestData req, FunctionContext executioncontext)
        {
            _logger.LogInformation("C# HTTP trigger function processed a request.");

            var response = req.CreateResponse(HttpStatusCode.OK);
            response.Headers.Add("Content-Type", "text/plain; charset=utf-8");

            response.WriteString("Welcome to Azure Functions!");

            return response;
        }
    }
}

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Upvotes: 1

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