获取Azure Function App v2的根目录 [英] Get root directory of Azure Function App v2

问题描述

我构建了一个Azure Function应用(v2).所有功能所需的配置任务都在Setup类中完成，该类的结构如下:

I build an Azure Function App (v2). Configuration tasks necessary for all functions are done in a Setup class that is structured like the following:

[assembly: WebJobsStartup(typeof(Startup))]

internal class Startup : IWebJobsStartup
{
  public void Configure(IWebJobsBuilder builder)
  {
    Configuration = new ConfigurationBuilder()
                      .SetBasePath(<functionAppDirectory>)
                      .AddJsonFile("local.settings.json")
                      .Build();
    builder.AddDependencyInjection(ConfigureServices);  
  }

  public IConfiguration Configuration { get; set; }

  private void ConfigureServices(IServiceCollection services)
  {
    var connection = Configuration.GetConnectionString("<myconnection-string>");
    ...
  }
}

在ConfigureServices中，我想从配置文件中读取连接字符串.为此，已使用SetBasePath指定了功能应用程序基本文件夹.但是我发现没有办法访问此路径.根据 https://github .com/Azure/azure-functions-host/wiki/获取有关当前正在运行的功能的信息，可以将ExecutionContext插入功能中，其中包含所需的路径.但是，如何在Startup类中访问ExecutionContext?

In ConfigureServices I want to read a connection string from a configuration file. For that the function app base folder has be specified with SetBasePath. But I found no way to get access to this path. According to https://github.com/Azure/azure-functions-host/wiki/Retrieving-information-about-the-currently-running-function an ExecutionContext can be injected in a function, which contains the path need. But how do I access ExecutionContext in my Startup class?

推荐答案

您可以在启动文件中使用这段代码. 今天，我刚刚为我的项目对其进行了测试，它可以在云和本地环境中工作.

You can use this piece of code in your startup file. I have just tested it today for my project and it works on both cloud and local.

var executioncontextoptions = builder.Services.BuildServiceProvider()
    .GetService<IOptions<ExecutionContextOptions>>().Value;
var currentDirectory = executioncontextoptions.AppDirectory;

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