Resolving "No job functions found" Error in Azure Functions

Question

Hello,

I'm encountering an issue with my Azure Functions project that's causing a persistent "No job functions found. Try making your job classes and methods public" error. Despite following the standard guidelines, the error persists. Here are the details:

Azure Functions Core Tools Version: 4.0.5455 (64-bit)
Function Runtime Version: 4.27.5.21554

The error occurs when running the function app locally and the full message is as follows:

[2023-12-25T14:17:48.218Z] Found /Users/username/Downloads/Programming/ProjectName/ProjectName.csproj. Using for user secrets file configuration.

[2023-12-25T14:17:49.193Z] No job functions found. Try making your job classes and methods public. If you're using binding extensions (e.g. Azure Storage, ServiceBus, Timers, etc.) make sure you've called the registration method for the extension(s) in your startup code (e.g. builder.AddAzureStorage(), builder.AddServiceBus(), builder.AddTimers(), etc.).


  
    net7.0
    v4
    Exe
    enable
    enable
  
  
    
    
    
    
  
  
    
    
    
      
    
  
  
    
      PreserveNewest
    
    
      PreserveNewest
      Never

using MealzNow.Services;
using MealzNow.Db;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.Hosting;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Logging;

using var loggerFactory = LoggerFactory.Create(builder =>
{
    builder.AddConsole();
});

var logger = loggerFactory.CreateLogger();

try
{
    var config = new ConfigurationBuilder()
        .AddJsonFile("local.settings.json", optional: true)
        .AddEnvironmentVariables()
        .Build();

    var cosmosDbAccount = config.GetValue("CosmosDb:Account")
    var cosmosDbKey = config.GetValue("CosmosDb:Key")
    var cosmosDbDatabaseName = config.GetValue("CosmosDb:DatabaseName")

    var host = new HostBuilder()
        .ConfigureServices((context, services) =>
        {
            services.AddDbContext(options =>
                options.UseCosmos(cosmosDbAccount, cosmosDbKey, cosmosDbDatabaseName));

             services.AddRepositories(config);
             services.AddServices(config);
             services.AddAutoMapper(typeof(Program));

        }).ConfigureFunctionsWorkerDefaults()
        .Build();

    await host.RunAsync();
}
catch (Exception ex)
{
    logger.LogCritical("JW: " + ex.Message);
}

using System.Net;
using System.Text.Json;
using MealzNow.Core.RequestModels;
using MealzNow.Services.Interfaces;
using Microsoft.Azure.Functions.Worker;
using Microsoft.Azure.Functions.Worker.Http;
using Microsoft.Extensions.Logging;
using Newtonsoft.Json;

namespace MealzNow.MobApi
{
    public class MealzNowMobAppApi
    {
        private readonly ILogger _logger;
        private readonly IAppService _appService;

        public MealzNowMobAppApi(ILoggerFactory loggerFactory, IAppService appService)
        {
            _logger = loggerFactory.CreateLogger();
            _appService = appService;
        }

        [Function(nameof(GetClientFranchises))]
        public async Task GetClientFranchises([HttpTrigger(AuthorizationLevel.Anonymous, "post")] HttpRequestData req)
        {
            _logger.LogInformation("Calling GetClientFranchises funtion");

            var content = await new StreamReader(req.Body).ReadToEndAsync();

            if (content == null)
                return req.CreateResponse(HttpStatusCode.BadRequest);

            var request = JsonConvert.DeserializeObject(content);

            if (request == null)
                return req.CreateResponse(HttpStatusCode.BadRequest);

            if (request.Id == Guid.Empty)
                return req.CreateResponse(HttpStatusCode.BadRequest);

            var data = await _appService.GetClientFranchises(request.Id.Value);

            var response = req.CreateResponse(HttpStatusCode.OK);

            await response.WriteAsJsonAsync(data);

            return response;
        }

Accepted Answer

Hello @Muhammad Haseeb Rehman - I tested based on the same details you've shared in your post (except that mine didn't have the MealzNow types, of course) and think it's a minor config issue (not related to code), and as @Divakarkumar-3696 answered below, I also confirmed that the absence of "FUNCTIONS_WORKER_RUNTIME": "dotnet-isolated" setting can cause the error. Do you have any updates?

Here's an official .NET 7 project sample with the correct configurations: https://github.com/Azure/azure-functions-dotnet-worker/tree/main/samples/Net7Worker

BTW, support for .NET 7 is ending on May 14, 2024.

Here's an official .NET 7 project sample with the correct configurations: https://github.com/Azure/azure-functions-dotnet-worker/tree/main/samples/Net7Worker

BTW, support for .NET 7 is ending on May 14, 2024.

Answer

Hi @Muhammad Haseeb Rehman ,

Please make sure in the local.settings.json file you have set worker runtime to Isolated, as below

{
"FUNCTIONS_WORKER_RUNTIME": "dotnet-isolated"
}

If this is helpful please accept answer.

Answer

I was following this guide step by step, and kept getting this same error. After looking at the error trace, it looked like a key value/attribute name was not being recognized. All I did was change Anonymous to ANONYMOUS in my function_app.py file and it worked! Here are the first 10 lines of function_app.py:

import azure.functions as func
import datetime
import json
import logging
app = func.FunctionApp()
@app.route(route="HttpExample", auth_level=func.AuthLevel.ANONYMOUS)
def HttpExample(req: func.HttpRequest) -> func.HttpResponse:
    logging.info('Python HTTP trigger function processed a request.')

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Resolving "No job functions found" Error in Azure Functions

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