c# - Azure WebJobs (3.x) 连续作业未在仪表板中显示函数

Question

我们有一个 Azure WebJob (3.x) 在 Azure 中的 API 应用程序下运行，全部为 Core 2.1。它可以正常发布并运行，但不会显示任何函数或在仪表板上列出函数调用。这很奇怪，因为该作业的控制台输出确实显示它检测到一个函数:

[10/17/2018 09:26:19 > fa7c81: SYS INFO] Run script 'run.cmd' with script host - 'WindowsScriptHost'
[10/17/2018 09:26:19 > fa7c81: SYS INFO] Status changed to Running
[10/17/2018 09:26:19 > fa7c81: INFO] 
[10/17/2018 09:26:19 > fa7c81: INFO] D:\local\Temp\jobs\continuous\SubmissionJob\43ucb4rv.ipc>dotnet SubmissionJob.dll  
[10/17/2018 09:26:21 > fa7c81: INFO] dbug: Microsoft.Extensions.Hosting.Internal.Host[1]
[10/17/2018 09:26:21 > fa7c81: INFO]       Hosting starting
[10/17/2018 09:26:21 > fa7c81: INFO] info: Microsoft.Azure.WebJobs.Hosting.JobHostService[0]
[10/17/2018 09:26:21 > fa7c81: INFO]       Starting JobHost
[10/17/2018 09:26:21 > fa7c81: INFO] info: Host.Startup[0]
[10/17/2018 09:26:21 > fa7c81: INFO]       Found the following functions:
[10/17/2018 09:26:21 > fa7c81: INFO]       SubmissionJob.Functions.ProcessQueueMessageAsync
[10/17/2018 09:26:21 > fa7c81: INFO]       
[10/17/2018 09:26:21 > fa7c81: INFO] Application started. Press Ctrl+C to shut down.
[10/17/2018 09:26:21 > fa7c81: INFO] Hosting environment: QA

Program.cs Program 类如下所示:

public static async Task Main(string[] args)
    {
        var builder = new HostBuilder()
            .UseEnvironment(Environment.GetEnvironmentVariable("ASPNETCORE_ENVIRONMENT"))
            .ConfigureWebJobs(b =>
            {
                b.AddAzureStorageCoreServices()
                    .AddAzureStorage()
                    .AddServiceBus()
                    .AddEventHubs();
            })
            .ConfigureAppConfiguration(b =>
            {
                // Adding command line as a configuration source
                b.AddCommandLine(args);
            })
            .ConfigureLogging((context, b) =>
            {
                b.SetMinimumLevel(LogLevel.Debug);
                b.AddConsole();

                // If this key exists in any config, use it to enable App Insights
                var appInsightsKey = context.Configuration["APPINSIGHTS_INSTRUMENTATIONKEY"];
                if (!string.IsNullOrEmpty(appInsightsKey))
                {
                    b.AddApplicationInsights(o => o.InstrumentationKey = appInsightsKey);
                }
            })
            .ConfigureServices((context, services) =>
            {
                services.AddAutoMapper();

                services.AddMemoryCache();

                services.AddDbContext<SubmissionsDbContext>(opts =>
                    opts.UseSqlServer(context.Configuration.GetConnectionString("DefaultConnection")));

                // cloud services
                services.AddTransient(s =>
                    CloudStorageAccount.Parse(
                        context.Configuration.GetConnectionString("AzureQueueConnectionString")));
                services.AddTransient<IBlobReadService, AzureBlobReadService>();
                services.AddSingleton<IBlobWriteService, AzureBlobWriteService>();
                services.AddSingleton<IQueueWriteService, AzureQueueWriteService>();

                // submission services
                services.AddScoped<ISubmissionStatusService, SubmissionStatusService>();

                services.AddSingleton<Functions, Functions>();

                // job activator, required in webjobs sdk 3+
                services.AddSingleton<IJobActivator>(new WebJobsActivator(services.BuildServiceProvider()));
            })
            .UseConsoleLifetime();;

        var host = builder.Build();
        using (host)
        {
            await host.RunAsync();
        }
    }

Functions.cs 有一个具有以下签名的方法:

public async Task ProcessQueueMessageAsync([QueueTrigger("operations")] CloudQueueMessage incomingMessage, TextWriter log)

...scm.azurewebsites.net/azurejobs/#/jobs/continuous/SubmissionJob 显示

Continuous WebJob Details SubmissionJob
Running
Run command: run.cmd

但其下方没有函数调用列表，并且作业永久保持在 Running 状态。如果我转到 Kudu 中的“函数”链接，它会显示没有要显示的函数/函数调用。

有什么想法吗？

尽管应用程序构建器明显不同，但其中大部分内容在 Framework 4.7 中运行良好。

Answer 1

这个问题的答案是双重的。

您可以使用

写入 Kudu 仪表板

var builder = new HostBuilder()
    .ConfigureWebJobs(b =>
    {
        b.AddDashboardLogging();
    });

这将工作并显示 WebJobs 1.x、2.x 的函数调用。但是，从 WebJobs SDK 3.x 开始，此功能已过时。控制台输出将继续显示在 Kudu 仪表板中，但不会检测到并且不会显示函数及其调用。建议改为使用 Application Insights。

var builder = new HostBuilder()
    .ConfigureLogging((context, b) =>
    {
        b.SetMinimumLevel(LogLevel.Debug);
        b.AddConsole();

        // If this key exists in any config, use it to enable App Insights.
        // This may already be configured in Azure Portal if running WebJob udner existing app with App Insights.
        var appInsightsKey = context.Configuration["APPINSIGHTS_INSTRUMENTATIONKEY"];
        if (!string.IsNullOrEmpty(appInsightsKey))
        {
            b.AddApplicationInsights(o => o.InstrumentationKey = appInsightsKey);
        }
    });

确保已使用存储连接字符串配置名为 AzureWebJobsStorage 的连接字符串。

另请参阅:https://github.com/Azure/azure-webjobs-sdk/wiki/Application-Insights-Integration

并且:https://learn.microsoft.com/en-us/azure/app-service/webjobs-sdk-get-started#add-application-insights-logging