适用于ServiceBusTrigger的appsettings.json中表示的Azure函数local.settings.json [英] Azure functions local.settings.json represented in appsettings.json for a ServiceBusTrigger

问题描述

我目前使用ServiceBusTrigger绑定具有azure功能

I currently have an azure function using the ServiceBusTrigger binding

 [ServiceBusTrigger("%TopicName%", "%SubscripionName%", Connection = "MyConnection")]
         string  catclogueEventMsgs, ILogger log, ExecutionContext context)

使用此local.settings.json文件

which uses this local.settings.json file

   "Values": {
             …
    "MyConnection": "Endpoint=sb://testxxxxxxxxxxxxxxxxxx
    "SubscriptionName": "testsubscriptionName"
    "TopicName": "testtopicName",
  }

我该如何在appsettings.json文件中表示它.会像下面吗?

How do I represent this in the appsettings.json file. Will it be like the below?

   "Values": {
    "MyConnection": "Endpoint=sb://testxxxxxxxxxxxxxxxxxx
    "SubscriptionName": "testsubscriptionName"
    "TopicName": "testtopicName",
  }

我可以使用如下所示的"MySubs"对象代替我的"Values"对象吗?

Instead of using a "Values" object can I use eg "MySubs" object like the below?

   "MySubs": {
    "MyConnection": "Endpoint=sb://testxxxxxxxxxxxxxxxxxx
    "SubscriptionName": "testsubscriptionName"
    "TopicName": "testtopicName",
  }

如果可以使用上述设置，我该如何在ServiceBusTrigger绑定中表示它?我会改成这个吗?

If its possible to use the above settings, how do I represent this in the ServiceBusTrigger binding? would i change it to this?

 [ServiceBusTrigger("%MySubs.TopicName%", "%MySubs.SubscripionName%", Connection = "MySubs.MyConnection")]
         string  catclogueEventMsgs, ILogger log, ExecutionContext context)

推荐答案

您确实可以按以下方式读取Values数组之外的设置:

You CAN indeed read settings outside the Values array as follows:

public class WeatherApiConfig
{
    public string WeatherApiUrl { get; set; }
    public string WeatherApiKey { get; set; }
}

Azure Functions V2的新增功能，我们拥有如下所示处理DI的合适方法:

New for Azure Functions V2, we have an appropriate way to handle DI as shown below:

Startup.cs

[assembly: FunctionsStartup(typeof(BlazingDemo.Api.Startup))]

namespace BlazingDemo.Api
{
    public class Startup : FunctionsStartup
    {
        public override void Configure(IFunctionsHostBuilder builder)
        {
            var config = new ConfigurationBuilder()
                .SetBasePath(Directory.GetCurrentDirectory())
                .AddJsonFile("local.settings.json", optional: true, reloadOnChange: true)
                .AddEnvironmentVariables()
                .Build();

            var apiConfig = new WeatherApiConfig();
            config.Bind(nameof(WeatherApiConfig), apiConfig);

            builder.Services.AddSingleton(apiConfig);
            builder.Services.AddHttpClient();
        }
    }
}

Local.settings.json

{  
  "IsEncrypted": false,
  "Values": {
    "AzureWebJobsStorage": "UseDevelopmentStorage=true",
    "FUNCTIONS_WORKER_RUNTIME": "dotnet"
  },
  "WeatherApiConfig": {
    "WeatherApiUrl": "http://api.openweathermap.org/data/2.5/weather",
    "WeatherApiKey": "**removed**"
  }
}

注意:对我来说，关键是要在Startup.cs中添加.SetBasePath(Directory.GetCurrentDirectory())，因为没有它就找不到文件.

Note: The key for me was to add .SetBasePath(Directory.GetCurrentDirectory()) in Startup.cs since it couldn't find the file without it.

在生产中，我使用功能应用程序的Application Settings部分来按如下方式配置这两个属性:

In production I use the function app's Application Settings section to configure these two properties as follows:

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