创建 Azure 函数“未找到作业函数”错误的问题

Question

我想要实现的是，我希望能够创建一个 Azure 函数，该函数将使用 YouTube API 将视频上传到 YouTube。例如：https://developers.google.com/youtube/v3/docs/videos/insert。创建 azure 函数后，我想在我的 Azure 逻辑应用程序中使用该函数。这是 Azure 函数的代码（上传视频）：

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);
            }
        }
    }

当我运行此代码时，我没有看到像这样的预期结果：https://developers.google.com/youtube/v3/docs/videos#resource。相反，我收到一个错误：

未找到工作职能。尝试公开您的工作类别和方法。如果您正在使用绑定扩展（例如 Azure 存储、ServiceBus、计时器等），请确保您已在启动代码中调用了扩展的注册方法（例如 builder.AddAzureStorage()、builder.AddServiceBus( )、builder.AddTimers() 等）。

我已经公开了我所有的方法。我不确定我错过了什么。

Answer 1

您错过了FunctionName 属性

[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

Answer 2

您尝试创建 Azure 函数时似乎使用了错误的模板，因此它创建了一个控制台应用程序。现在您缺少 Azure Functions 特定的 Nuget 包，我认为您的项目也缺少一些 Azure Functions 特定的文件，例如 host.json。

您可以在使用 Visual Studio 时尝试按照以下说明操作吗： https://docs.microsoft.com/en-us/azure/azure-functions/functions-create-your-first-function-visual-studio

或者使用 VS Code 时的这些说明： https://docs.microsoft.com/en-us/azure/azure-functions/functions-create-first-function-vs-code?pivots=programming-language-csharp

这样你最终会得到一个正确的函数应用结构，包括正确的依赖关系。

Answer 3

在尝试了一些不起作用的事情后，退出并重新启动 Visual Studio 为我修复了它。我不知道为什么这能解决这么多问题。