DI in Azure Functions

Question

I have some class libraries that I use in my ASP.NET Web API app that handle all my backend stuff e.g. CRUD operations to multiple databases like Azure SQL Database, Cosmos

Answer 1

AzureFunctions.Autofac is very easy to use.

Just add a config file:

public class DIConfig
{
    public DIConfig(string functionName)
    {
        DependencyInjection.Initialize(builder =>
        {
            builder.RegisterType().As();
            ...
        }, functionName);
    }
}

Add the DependencyInjectionConfig attribute then inject:

[DependencyInjectionConfig(typeof(DIConfig))]
public class MyFunction
{
    [FunctionName("MyFunction")]
    public static HttpResponseMessage Run([HttpTrigger(AuthorizationLevel.Function, "get", Route = null)]HttpRequestMessage request, 
                                          TraceWriter log, 
                                          [Inject]ISample sample)
    {

https://github.com/introtocomputerscience/azure-function-autofac-dependency-injection