Issue with creating an Azure Function “No job functions found” error

问题

What I am trying to achieve is that, I want to be able to create an Azure Function that would upload a video to YouTube using the YouTube API. example:https://developers.google.com/youtube/v3/docs/videos/insert . After creating the azure function, I then want to use that function inside my Azure logic app. Here is the code for the Azure function(uploded video):

using Google.Apis.Auth.OAuth2;
using Google.Apis.Services;
using Google.Apis.Upload;
using Google.Apis.Util.Store;
using Google.Apis.YouTube.v3;
using Google.Apis.YouTube.v3.Data;


namespace Google.Apis.YouTube.Samples
    {
        /// <summary>
        /// YouTube Data API v3 sample: upload a video.
        /// Relies on the Google APIs Client Library for .NET, v1.7.0 or higher.
        /// See https://developers.google.com/api-client-library/dotnet/get_started
        /// </summary>
        public class UploadVideo
        {
            [STAThread]
            static void Main(string[] args)
            {
                Console.WriteLine("YouTube Data API: Upload Video");
                Console.WriteLine("==============================");

                try
                {
                    new UploadVideo().Run().Wait();
                }
                catch (AggregateException ex)
                {
                    foreach (var e in ex.InnerExceptions)
                    {
                        Console.WriteLine("Error: " + e.Message);
                    }
                }

                Console.WriteLine("Press any key to continue...");
                Console.ReadKey();
            }

            private async Task Run()
            {
                UserCredential credential;
                using (var stream = new FileStream("client_secrets.json", FileMode.Open, FileAccess.Read))
                {
                    credential = await GoogleWebAuthorizationBroker.AuthorizeAsync(
                        GoogleClientSecrets.Load(stream).Secrets,
                        // This OAuth 2.0 access scope allows an application to upload files to the
                        // authenticated user's YouTube channel, but doesn't allow other types of access.
                        new[] { YouTubeService.Scope.YoutubeUpload },
                        "user",
                        CancellationToken.None
                    );
                }

                var youtubeService = new YouTubeService(new BaseClientService.Initializer()
                {
                    HttpClientInitializer = credential,
                    ApplicationName = Assembly.GetExecutingAssembly().GetName().Name
                });

                var video = new Video();
                video.Snippet = new VideoSnippet();
                video.Snippet.Title = "Default Video Title";
                video.Snippet.Description = "Default Video Description";
                video.Snippet.Tags = new string[] { "tag1", "tag2" };
                video.Snippet.CategoryId = "22"; // See https://developers.google.com/youtube/v3/docs/videoCategories/list
                video.Status = new VideoStatus();
                video.Status.PrivacyStatus = "unlisted"; // or "private" or "public"
                var filePath = @"/Users/sean/Desktop/audio/test1.mp4"; // Replace with path to actual movie file.

                using (var fileStream = new FileStream(filePath, FileMode.Open))
                {
                    var videosInsertRequest = youtubeService.Videos.Insert(video, "snippet,status", fileStream, "video/*");
                    videosInsertRequest.ProgressChanged += videosInsertRequest_ProgressChanged;
                    videosInsertRequest.ResponseReceived += videosInsertRequest_ResponseReceived;

                    await videosInsertRequest.UploadAsync();
                }
            }

            void videosInsertRequest_ProgressChanged(Google.Apis.Upload.IUploadProgress progress)
            {
                switch (progress.Status)
                {
                    case UploadStatus.Uploading:
                        Console.WriteLine("{0} bytes sent.", progress.BytesSent);
                        break;

                    case UploadStatus.Failed:
                        Console.WriteLine("An error prevented the upload from completing.\n{0}", progress.Exception);
                        break;
                }
            }

            void videosInsertRequest_ResponseReceived(Video video)
            {
                Console.WriteLine("Video id '{0}' was successfully uploaded.", video.Id);
            }
        }
    }

When I run this code, I am not seeing the expected outcome like this: https://developers.google.com/youtube/v3/docs/videos#resource . Instead, I am getting an error :

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.).

I have made all my methods public. I am not sure what I am missing.

回答1:

You are missing out the FunctionName attribute

[FunctionName("Function1")]
        public static async Task<IActionResult> Run(
                [HttpTrigger(AuthorizationLevel.Function, "get", "post", Route = null)] HttpRequest req,
                ILogger log)
        {
            log.LogInformation("C# HTTP trigger function processed a request.");
             //UploadVideoToYoutube() method call here;
            return new OkResult();
        }

Getting started docs

回答2:

It looks like the wrong template was used when you tried to create an Azure Function, so it created a Console App instead. Right now you're missing Azure Functions specific Nuget packages and I think your project also lacks some Azure Function specific files such as the host.json.

Can you try following these instructions when using Visual Studio: https://docs.microsoft.com/en-us/azure/azure-functions/functions-create-your-first-function-visual-studio

Or these instructions when using VS Code: https://docs.microsoft.com/en-us/azure/azure-functions/functions-create-first-function-vs-code?pivots=programming-language-csharp

This way you'll end up with a proper structure of a Function App, including the correct dependencies.

来源：https://stackoverflow.com/questions/60220938/issue-with-creating-an-azure-function-no-job-functions-found-error