带有 Cosmos DB 输出本地开发主机失败的 Azure HTTP 函数触发器 2.x [英] Azure HTTP function trigger 2.x with Cosmos DB Output local dev host failing

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本文介绍了带有 Cosmos DB 输出本地开发主机失败的 Azure HTTP 函数触发器 2.x的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我正在使用 azure functions 2.x 和 dotnet core 开发一个 http 触发器，在最新更新到 VS 2017 15.8.2 后，我在本地运行该函数时收到以下错误

1/9/2018 13:30:50] 停止主机[1/9/2018 13:31:06] 读取主机配置文件 'C:UsersMattDouhansource
eposNWMposTransInputNWMposTransInputinDebug
etstandard2.0host.json'[1/9/2018 13:31:06] 主机配置文件读取:[1/9/2018 13:31:06] {}[1/9/2018 13:31:06] 启动主机 (HostId=desktop7cks1do-260439321, InstanceId=5fd41a43-b3ca-47e4-adf6-320d40fa9613, Version=2.0.11960.0, ProcessId=13156, AppDomainId=1, Debug=False，ConsecutiveErrors=5，StartupCount=6，FunctionsExtensionVersion=)[1/9/2018 13:31:07] 发生 ScriptHost 错误[1/9/2018 13:31:07] System.Private.CoreLib:无法从程序集Microsoft.Azure.WebJobs.Host，版本=3.0.0.0"加载类型Microsoft.Azure.WebJobs.Hosting.IWebJobsStartup"，文化=中性，PublicKeyToken=null'.[1/9/2018 13:31:07] 停止主机

我正在运行 Function Core 工具 2.0.1-Beta.35 和运行时版本 2.0.11960.0

函数如下所示

使用 System.IO；使用 Microsoft.AspNetCore.Mvc；使用 Microsoft.Azure.WebJobs；使用 Microsoft.Azure.WebJobs.Extensions.Http；使用 Microsoft.AspNetCore.Http；使用 Microsoft.Azure.WebJobs.Host；使用 Newtonsoft.Json；使用 Microsoft.Extensions.Logging；使用系统；命名空间 NWMposTransInput{公共静态类 Function1{[函数名称(函数 1")]公共静态 IActionResult Run([HttpTrigger(AuthorizationLevel.Function, "get", "post", Route = null)]HttpRequest 请求，ILogger 日志，[宇宙数据库(数据库名称:xxxx"，集合名称:yyyy"，ConnectionStringSetting = "CosmosDbConnection")]out 动态文件，ILogger 日志2){log.LogInformation("C# HTTP 触发函数处理了一个请求.");字符串名称 = req.Query["name"];string requestBody = new StreamReader(req.Body).ReadToEnd();动态数据 = JsonConvert.DeserializeObject(requestBody);名字=名字??数据?.名称；文档 = 新 { SSourceSystem = "jongelSystem",id = Guid.NewGuid(),SSourceSystemVersion = "1.1",STransactionId = "12345"};log.LogInformation($"C# 队列触发函数插入一行");log.LogInformation($"Description={req.Body}");返回名称！= null?(ActionResult)new OkObjectResult($"Hello, {name}"): new BadRequestObjectResult("请在查询字符串或请求正文中传递一个名称");}}公共类 NWCloudOrder{公共字符串 ID { 获取；放;}公共字符串 SSourceSystem { 获取；放;}公共字符串 SSourceSystemVersion { 获取；放;}公共字符串 STransactionId { 获取；放;}}}

--- 编辑 ---确保我使用正确的运行时现在会产生以下错误

[2/9/2018 05:44:15] 发生 ScriptHost 错误[2/9/2018 05:44:15] System.Private.CoreLib:无法加载文件或程序集Microsoft.AspNetCore.Mvc.Abstractions，版本=2.2.0.0，文化=中性，PublicKeyToken=adb9793829ddae60".无法找到或加载特定文件.(来自 HRESULT 的异常:0x80131621).System.Private.CoreLib:无法加载文件或程序集Microsoft.AspNetCore.Mvc.Abstractions，版本=2.2.0.0，文化=中性，PublicKeyToken=adb9793829ddae60".[2/9/2018 05:44:15] 停止主机

我确实安装了 2.2.0-preview1-35029

解决方案

引用最新版本3.0.1-beta1/2的Microsoft.Azure.WebJobs.Extensions.CosmosDB引起 在旧函数运行时 2.0.11960.0 中.Microsoft.NET.Sdk.Functions 1.0.19 和 Microsoft.Azure.WebJobs.Extensions.CosmosDB 3.0.1-beta2 取决于运行时 2.0.12050.0.

使用相关错误信息检查此

更新

  1. 检查 Cli 输出，恐怕旧版本 2.0.11651.0 正在使用中.

    起始主机(HostId=xxx, InstanceId=xxx, Version=2.0.11651.0, ...)

    转到 %localappdata%AzureFunctionsToolsReleases，您可能还会看到一个空文件夹 2.5.1.

    由于网络等原因，下载失败.再次重复上述步骤.如果不起作用，请尝试手动下载 Cli.先关闭VS.

    1).打开%localappdata%AzureFunctionsToolsfeed.json，找到最新的v2下载地址.

    例如cli:https://functionscdn.azureedge.net/public/2.0.1-beta.36/Azure.Functions.Cli.win-x86.2.0.1-beta.36.zip.p>

    2).将解压后的文件夹重命名为cli，放到2.5.1下.

    3).将 cli 文件夹中的 templates 文件夹移动到 2.5.1.

    4).在 2.5.1 下创建 manifest.json.(更改您的用户名)

    <代码>{"ReleaseName": "2.5.1","CliEntrypointPath": "C:\Users\UserName\AppData\Local\AzureFunctionsTools\Releases\2.5.1\cli\func.exe","TemplatesDirectory": "C:\Users\UserName\AppData\Local\AzureFunctionsTools\Releases\2.5.1\templates","FunctionsExtensionVersion": "~2",SdkPackageVersion":1.0.19"}

  2. Function SDK 在设计上引用了 Microsoft.AspNetCore.Mvc.Abstractions 2.1.0.删除 2.2.0-preview1-35029 否则执行时可能会出错.

    Microsoft.Azure.WebJobs.Host:异常绑定参数req".System.Private.CoreLib:无法创建抽象类.

I am developing a http trigger using azure functions 2.x and dotnet core, after the latest update to VS 2017 15.8.2 I am getting the following error when running the function locally

1/9/2018 13:30:50] Stopping Host
[1/9/2018 13:31:06] Reading host configuration file 'C:UsersMattDouhansource
eposNWMposTransInputNWMposTransInputinDebug
etstandard2.0host.json'
[1/9/2018 13:31:06] Host configuration file read:
[1/9/2018 13:31:06] {}
[1/9/2018 13:31:06] Starting Host (HostId=desktop7cks1do-260439321, InstanceId=5fd41a43-b3ca-47e4-adf6-320d40fa9613, Version=2.0.11960.0, ProcessId=13156, AppDomainId=1, Debug=False, ConsecutiveErrors=5, StartupCount=6, FunctionsExtensionVersion=)
[1/9/2018 13:31:07] A ScriptHost error has occurred
[1/9/2018 13:31:07] System.Private.CoreLib: Could not load type 'Microsoft.Azure.WebJobs.Hosting.IWebJobsStartup' from assembly 'Microsoft.Azure.WebJobs.Host, Version=3.0.0.0, Culture=neutral, PublicKeyToken=null'.
[1/9/2018 13:31:07] Stopping Host

I am running Function Core tools 2.0.1-Beta.35 and runtime version 2.0.11960.0

The function looks as follows

using System.IO;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Azure.WebJobs;
using Microsoft.Azure.WebJobs.Extensions.Http;
using Microsoft.AspNetCore.Http;
using Microsoft.Azure.WebJobs.Host;
using Newtonsoft.Json;
using Microsoft.Extensions.Logging;
using System;

namespace NWMposTransInput
{
    public static class Function1
    {
        [FunctionName("Function1")]
        public static IActionResult Run([HttpTrigger(AuthorizationLevel.Function, "get", "post", Route = null)]
        HttpRequest req, ILogger log,
            [CosmosDB(
            databaseName: "xxxx",
            collectionName: "yyyy",
            ConnectionStringSetting = "CosmosDbConnection")]out dynamic document,
            ILogger log2)
        {
            log.LogInformation("C# HTTP trigger function processed a request.");

            string name = req.Query["name"];

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

            document = new { SSourceSystem = "jongelSystem",
                             id = Guid.NewGuid(),
                             SSourceSystemVersion = "1.1",
                             STransactionId = "12345"};

            log.LogInformation($"C# Queue trigger function inserted one row");
            log.LogInformation($"Description={req.Body}");

            return name != null
                ? (ActionResult)new OkObjectResult($"Hello, {name}")
                : new BadRequestObjectResult("Please pass a name on the query string or in the request body");
        }
    }

    public class NWCloudOrder
    {
        public string Id { get; set; }
        public string SSourceSystem { get; set; }
        public string SSourceSystemVersion { get; set; }
        public string STransactionId { get; set; }
    }
}

--- EDIT --- Making sure I use the correct runtime this now produces the following error

[2/9/2018 05:44:15] A ScriptHost error has occurred
[2/9/2018 05:44:15] System.Private.CoreLib: Could not load file or assembly 'Microsoft.AspNetCore.Mvc.Abstractions, Version=2.2.0.0, Culture=neutral, PublicKeyToken=adb9793829ddae60'. Could not find or load a specific file. (Exception from HRESULT: 0x80131621). System.Private.CoreLib: Could not load file or assembly 'Microsoft.AspNetCore.Mvc.Abstractions, Version=2.2.0.0, Culture=neutral, PublicKeyToken=adb9793829ddae60'.
[2/9/2018 05:44:15] Stopping Host

I do have 2.2.0-preview1-35029 installed

解决方案

It's caused by referencing Microsoft.Azure.WebJobs.Extensions.CosmosDB of latest version 3.0.1-beta1/2 in old function runtime 2.0.11960.0. Microsoft.NET.Sdk.Functions 1.0.19 and Microsoft.Azure.WebJobs.Extensions.CosmosDB 3.0.1-beta2 depends on runtime 2.0.12050.0.

Check this issue with relevant error info for breaking changes of latest runtime 2.0.12050.0.

If you don't want to move to latest runtime for now, downgrade Microsoft.Azure.WebJobs.Extensions.CosmosDB to 3.0.0-beta7 and Microsoft.NET.Sdk.Functions to 1.0.14.

Else just make sure VS consumes the latest function runtime 2.0.12050.0.

  1. On VS menus-> Extensions and Updates. Find Azure Functions and Web Jobs Tools. Make sure it's >= 15.8.5023.(Need to update VS to 15.8 first).

  2. Delete old Function Core tools(Cli) folder %localappdata%AzureFunctionsTools.

  3. Restart VS and create a new Azure function. Wait at the creation dialog for VS to download new Cli and templates, until we see the tip change to Updates are ready.

Update

  1. Check Cli output, I am afraid older version 2.0.11651.0 is in use.

    Starting Host (HostId=xxx, InstanceId=xxx, Version=2.0.11651.0, ...)

    Go to %localappdata%AzureFunctionsToolsReleases, you may also see an empty folder 2.5.1.

    The download failed due to some reason like network. Repeat the steps above again. If it doesn't work, try to download Cli manually. Close VS first.

    1). Open %localappdata%AzureFunctionsToolsfeed.json to find latest download url of v2.

    e.g. cli: https://functionscdn.azureedge.net/public/2.0.1-beta.36/Azure.Functions.Cli.win-x86.2.0.1-beta.36.zip.

    2). Rename unzipped folder as cli, put it under 2.5.1.

    3). Move templates folder in cli folder to 2.5.1.

    4). Create a manifest.json under 2.5.1.(Change your UserName)

    {
 "ReleaseName": "2.5.1",
 "CliEntrypointPath": "C:\Users\UserName\AppData\Local\AzureFunctionsTools\Releases\2.5.1\cli\func.exe",
 "TemplatesDirectory": "C:\Users\UserName\AppData\Local\AzureFunctionsTools\Releases\2.5.1\templates",
 "FunctionsExtensionVersion": "~2",
 "SdkPackageVersion": "1.0.19"
}

  2. Function SDK references Microsoft.AspNetCore.Mvc.Abstractions 2.1.0 by design. Remove 2.2.0-preview1-35029 or we may get error when executing. 

    Microsoft.Azure.WebJobs.Host: Exception binding parameter 'req'. System.Private.CoreLib: Cannot create an abstract class.

这篇关于带有 Cosmos DB 输出本地开发主机失败的 Azure HTTP 函数触发器 2.x的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！

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