依赖注入的Azure使用SDK WebJobs？ [英] Dependency injection using Azure WebJobs SDK?

问题描述

问题是，在Azure SDK WebJobs只支持公共静态方法作为工作的切入点，这意味着没有实现构造/物业注入方式。

The problem is that the Azure WebJobs SDK supports only public static methods as job entry-points which means there is no way of implementing constructor/property injection.

我无法找到有关此主题的官方WebJobs SDK文档/资源的任何东西。我遇到的唯一的解决方案是基于服务定位器对这个职位<所描述的（反）模式href=\"http://www.jerriepelser.com/blog/using-autofac-and-common-service-locator-with-azure-webjobs\">here.

I am unable to find anything about this topic in official WebJobs SDK documentation/resources. The only solution that I came across is based on service locator (anti) pattern described on this post here.

有没有用适当的依赖注入基于Azure的WebJobs SDK项目的好办法？

Is there a good way to use "proper" dependency injection for projects based on Azure WebJobs SDK?

推荐答案

的Azure SDK WebJobs现在支持实例方法。使用自定义IJobActivator结合起来，允许您使用DI

Azure WebJobs SDK now supports instance methods. Combining this with a custom IJobActivator allows you to use DI.

首先，创建自定义IJobActivator可以使用自己喜欢的DI容器解决作业类型：

First, create the custom IJobActivator that can resolve a job type using your favourite DI container:

public class MyActivator : IJobActivator
{
    private readonly IUnityContainer _container;

    public MyActivator(IUnityContainer container)
    {
        _container = container;
    }

    public T CreateInstance<T>()
    {
        return _container.Resolve<T>();
    }
}

您需要使用自定义JobHostConfiguration注册这个类：

You need to register this class using a custom JobHostConfiguration:

var config = new JobHostConfiguration
{
    JobActivator = new MyActivator(myContainer)
};
var host = new JobHost(config);

然后，您可以使用与实例方法的简单类为作业（在这里我使用统一的构造注入功能）：

Then, you can use a simple class with instance methods for your jobs (here I'm using Unity's constructor injection feature):

public class MyFunctions
{
    private readonly ISomeDependency _dependency;

    public MyFunctions(ISomeDependency dependency)
    {
        _dependency = dependency;
    }

    public Task DoStuffAsync([QueueTrigger("queue")] string message)
    {
        Console.WriteLine("Injected dependency: {0}", _dependency);

        return Task.FromResult(true);
    }
}

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