Azure Timer 触发功能依赖注入问题

Question

我的 Timer azure Function 使用默认的 DI。它使用 Code+Test 在本地和 Azure 中正常运行 - Test/Run。但是当它由计时器触发时，它会在注入的属性.

上出现 NullReferenceException 失败

function.json:

{
  "generatedBy": "Microsoft.NET.Sdk.Functions-3.0.11",
  "configurationSource": "attributes",
  "bindings": [
    {
      "type": "timerTrigger",
      "schedule": "0 0 12 * * *",
      "useMonitor": true,
      "runOnStartup": false,
      "name": "myTimer"
    }
  ],
  "disabled": false,
  "scriptFile": "../bin/MyFunction.dll",
  "entryPoint": "MyFunctionApp.MyFunction.RunAsync"
}

函数：

 private readonly IMyService _myService;
 public MyFunction(IMyService myService)
 {
     _myService= myService;
 }

 [FunctionName("MyFunction")]
 public async Task RunAsync(
    [TimerTrigger("0 0 12 * * *")]
    TimerInfo myTimer,
    ILogger log)
 { ... }

服务：

 private readonly IMyClient client;

 public MyService(IMyClient _client)
 {
     client = _client;
 }
...
MyServiceMethod()
{
   client.MyClientMethod() <== it fails here
}

启动：

var myParams = ...;
builder.Services.AddTransient<IMyClient, MyClient>(provider =>
{
   return new MyClient(myParams);
});

builder.Services.AddTransient<IMyService, MyService>();

.网络核心 3.1

Microsoft.Azure.Functions.Extensions 1.1.0

Microsoft.Extensions.Logging.Abstractions 3.1.12

Microsoft.NET.Sdk.Functions-3.0.11

Answer 1

下载后有效 Microsoft.Azure.Functions.Extensions 1.1.0 到 1.0.0

Azure Timer 触发功能依赖注入问题

Azure Timer trigger finction Dependency Injection issue

c#

dependency-injection

azure

.net-core

azure-functions