将 Azure Functions 升级到 5.0：System.UriFormatException

Question

我一直在努力将我们的一个 Azure Functions 实现升级到 .net 5。我已经与可能的恶魔作斗争，但就像我已经整理了所有配置和依赖注入更改一样，它向我抛出了一个曲线球.在Main 中的host.RunAsync 之后，我得到以下异常，我对罪魁祸首有点茫然。有没有人遇到并修复过这个？

System.UriFormatException
  HResult=0x80131537
  Message=Invalid URI: The hostname could not be parsed.
  Source=System.Private.Uri
  StackTrace:
   at System.Uri.CreateThis(String uri, Boolean dontEscape, UriKind uriKind)
   at Grpc.Net.Client.GrpcChannel.ForAddress(String address, GrpcChannelOptions channelOptions)
   at Microsoft.Extensions.DependencyInjection.GrpcServiceCollectionExtensions.<>c.<AddGrpc>b__1_1(IServiceProvider p) in D:\a\1\s\src\DotNetWorker.Grpc\GrpcServiceCollectionExtensions.cs:line 58
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitFactory(FactoryCallSite factoryCallSite, RuntimeResolverContext context)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteVisitor`2.VisitCallSiteMain(ServiceCallSite callSite, TArgument argument)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitCache(ServiceCallSite callSite, RuntimeResolverContext context, ServiceProviderEngineScope serviceProviderEngine, RuntimeResolverLock lockType)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitRootCache(ServiceCallSite singletonCallSite, RuntimeResolverContext context)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteVisitor`2.VisitCallSite(ServiceCallSite callSite, TArgument argument)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitConstructor(ConstructorCallSite constructorCallSite, RuntimeResolverContext context)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteVisitor`2.VisitCallSiteMain(ServiceCallSite callSite, TArgument argument)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitCache(ServiceCallSite callSite, RuntimeResolverContext context, ServiceProviderEngineScope serviceProviderEngine, RuntimeResolverLock lockType)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitRootCache(ServiceCallSite singletonCallSite, RuntimeResolverContext context)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteVisitor`2.VisitCallSite(ServiceCallSite callSite, TArgument argument)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitConstructor(ConstructorCallSite constructorCallSite, RuntimeResolverContext context)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteVisitor`2.VisitCallSiteMain(ServiceCallSite callSite, TArgument argument)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitCache(ServiceCallSite callSite, RuntimeResolverContext context, ServiceProviderEngineScope serviceProviderEngine, RuntimeResolverLock lockType)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitRootCache(ServiceCallSite singletonCallSite, RuntimeResolverContext context)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteVisitor`2.VisitCallSite(ServiceCallSite callSite, TArgument argument)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitIEnumerable(IEnumerableCallSite enumerableCallSite, RuntimeResolverContext context)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteVisitor`2.VisitCallSiteMain(ServiceCallSite callSite, TArgument argument)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitCache(ServiceCallSite callSite, RuntimeResolverContext context, ServiceProviderEngineScope serviceProviderEngine, RuntimeResolverLock lockType)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitRootCache(ServiceCallSite singletonCallSite, RuntimeResolverContext context)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteVisitor`2.VisitCallSite(ServiceCallSite callSite, TArgument argument)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.Resolve(ServiceCallSite callSite, ServiceProviderEngineScope scope)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.DynamicServiceProviderEngine.<>c__DisplayClass1_0.<RealizeService>b__0(ServiceProviderEngineScope scope)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.ServiceProviderEngine.GetService(Type serviceType, ServiceProviderEngineScope serviceProviderEngineScope)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.ServiceProviderEngineScope.GetService(Type serviceType)
   at Microsoft.Extensions.DependencyInjection.ServiceProviderServiceExtensions.GetService[T](IServiceProvider provider)
   at Microsoft.Extensions.Hosting.Internal.Host.<StartAsync>d__9.MoveNext()
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.Extensions.Hosting.HostingAbstractionsHostExtensions.<RunAsync>d__4.MoveNext()
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at Microsoft.Extensions.Hosting.HostingAbstractionsHostExtensions.<RunAsync>d__4.MoveNext()
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.GetResult()
   at MySoftware.FunctionApp.Program.<Main>(String[] args)

  This exception was originally thrown at this call stack:
    [External Code]

我的 Program.cs 主文件如下所示：

using Microsoft.Extensions.Hosting;
using System.Threading.Tasks;

namespace FunctionApp1
{
    /// <summary>
    /// Entry
    /// </summary>
    public class Program
    {
        static async Task Main(string[] args)
        {
            var host = new HostBuilder()
                .ConfigureFunctionsWorkerDefaults()
                .Build();

            await host.RunAsync();
        }
    }
}

还有我的功能

   using Microsoft.AspNetCore.Mvc;
using Microsoft.Azure.Functions.Worker;
using Microsoft.Azure.Functions.Worker.Http;
using Microsoft.Azure.WebJobs;
using Microsoft.Azure.WebJobs.Extensions.Http;
using Microsoft.Extensions.Logging;
using Newtonsoft.Json;
using System.IO;
using System.Threading.Tasks;

namespace FunctionApp1
{
    /// <summary>
    /// 
    /// </summary>
    public static class Function1
    {
        /// <summary>
        /// 
        /// </summary>
        /// <param name="req"></param>
        /// <param name="ctx"></param>
        /// <returns></returns>
        [FunctionName("Function1")]
        public static async Task<IActionResult> Run(
            [HttpTrigger(AuthorizationLevel.Function, "get", "post", Route = null)] HttpRequestData req, FunctionContext ctx)
        {
            ctx.GetLogger("out").LogInformation("C# HTTP trigger function processed a request.");

            string name = req.ReadAsString();

            string requestBody = await new StreamReader(req.Body).ReadToEndAsync();
            dynamic data = JsonConvert.DeserializeObject(requestBody);
            name = name ?? data?.name;

            string responseMessage = string.IsNullOrEmpty(name)
                ? "This HTTP triggered function executed successfully. Pass a name in the query string or in the request body for a personalized response."
                : $"Hello, {name}. This HTTP triggered function executed successfully.";

            return new OkObjectResult(responseMessage);
        }
    }
}

当我使用 func host start 时，我还会收到错误消息“未找到工作职能。尝试公开你的工作类和方法。”

[2021-04-09T07:37:04.953Z] FUNCTIONS_WORKER_RUNTIME set to dotnet-isolated. Skipping WorkerConfig for language:python
[2021-04-09T07:37:04.954Z] Reading functions metadata
[2021-04-09T07:37:04.955Z] 0 functions found
[2021-04-09T07:37:04.962Z] 0 functions loaded
[2021-04-09T07:37:04.969Z] Generating 0 job function(s)
[2021-04-09T07:37:04.978Z] 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.).
[2021-04-09T07:37:04.983Z] Initializing function HTTP routes
[2021-04-09T07:37:04.985Z] No HTTP routes mapped
[2021-04-09T07:37:04.986Z]
[2021-04-09T07:37:04.994Z] Host initialized (53ms)
[2021-04-09T07:37:04.997Z] Host started (63ms)
[2021-04-09T07:37:04.998Z] Job host started
For detailed output, run func with --verbose flag.

Answer 1

目前，.net 5 azure function 不能很好地支持 Visual Studio 等工具。您可以在Azure Functions Core Tools 中使用此命令func host start 来运行您的函数。

github也有类似的问题，可以参考the issue了解详情。

Answer 2

我花了半天时间才弄明白，但你需要将[FunctionName("Function1")] 替换为[Function("Function1")]。显然，这在 Azure Functions 3 中有所改变，但据我所知，任何地方都没有提及。

Answer 3

对我来说，这是因为我没有安装 Azure Toolkit for Rider。将此作为插件安装，您就可以开始使用了。