Azure-docs: Additional configuration providers

[arkiaconsulting]

How could we register additional configuration providers(eg. Azure App Configuration). The AddAzureAppConfiguration extension method extends IConfigurationBuilder, which is not exposed in the FunctionsStartup class.

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Document Details

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• ID: 5786402e-9d88-5de0-607a-1c2a143af006
• Version Independent ID: 15368d1c-b22e-7eb2-413f-cc0d41d2b909
• Content: Use dependency injection in .NET Azure Functions
• Content Source: articles/azure-functions/functions-dotnet-dependency-injection.md
• Service: azure-functions
• GitHub Login: @ggailey777
• Microsoft Alias: jehollan

[mike-urnun-msft]

Hi @arkiaconsulting Thank you for your feedback! We will review and update as appropriate.

[KetanChawda-MSFT]

@fabiocav could you please share your thoughts here ?

[marctalary]

Hi, I appeared to install need to install the package Microsoft.Azure.WebJobs.Script.ExtensionsMetadataGenerator to get this working

[fabiocav]

This is somewhat related to #30814, as they're both dealing with configuration. We should have a document section covering Configuration, which would address both issues.

/cc @jeffhollan @brettsam

[arkiaconsulting]

@marctalary: what do you mean ? Could you please explain ?

[marctalary]

Sure, I added the Microsoft.Azure.Functions.Extensions package to an
existing function app that didn't also include the
package Microsoft.Azure.WebJobs.Script.ExtensionsMetadataGenerator.
In debug everything compiled and started without error but the function
failed when invoked with a DI error. After adding the package it started
working.

See https://github.com/marctalary/FunctionDiExample which has a copy of the
the Basic Function using the Microsoft.Azure.Functions.Extensions package
but it does not invoke the SampleStartup method and fails.

[KetanChawda-MSFT]

Thanks @fabiocav . I have assigned this to content author @ggailey777 to update the doc as appropriate.

[arkiaconsulting]

Thanks @marctalary, I see, but I'm affraid that this isn't related to the present issue.

[tmoon8730]

Does this also affect the usage of AddServiceBus()? I have a simple Service Bus triggered function and am unable to get it to bind the service bus extension after implementing this DI system.

[marctalary]

Thanks @marctalary, I see, but I'm affraid that this isn't related to the present issue.
@arkiaconsulting you're right, apologies I meant to create a separate issue

[rameshjanjyam]

@arkiaconsulting
following - https://github.com/Marcele1987 arcticle - http://marcelegger.net/azure-functions-v2-keyvault-and-iconfiguration?unapproved=31&moderation-hash=d6695c5977924b951f6351d647ec049d#comment-31 - I was able to add user-secrets to configuration. Until you get an official answer i think you can use same approach to integrate azure app configuration

code

var configurationBuilder = new ConfigurationBuilder();
            var descriptor = builder.Services.FirstOrDefault(d => d.ServiceType == typeof(IConfiguration));
            if (descriptor?.ImplementationInstance is IConfiguration configRoot)
            {
                configurationBuilder.AddConfiguration(configRoot);
            }
            var config = configurationBuilder.Build();
            configurationBuilder.AddUserSecrets<Startup>();
            config = configurationBuilder.Build();
            builder.Services.Replace(ServiceDescriptor.Singleton(typeof(IConfiguration), config));

[MisinformedDNA]

@rameshjanjyam How are you setting/updating the values in "User Secrets"? I don't see any options when I right-click the project. Are you just using the command line?

[arkiaconsulting]

@MisinformedDNA You have to add a UserSecretsId tag in your .csproj. See here

[rameshjanjyam]

@MisinformedDNA yes I am using command line. as mentioned by @arkiaconsulting in my .csproj file I have UserSecretsId tag which is a guid

 <PropertyGroup>
    <TargetFramework>netcoreapp2.1</TargetFramework>
    <AzureFunctionsVersion>v2</AzureFunctionsVersion>
    <UserSecretsId>****guid ***** </UserSecretsId>
  </PropertyGroup>

and using cli commands (my development environment is on mac) like below I add secrets to UserSecrets
dotnet user-secrets set <key> <value>

[craigshoemaker]

Configuration support is a feature that the product team is investigating. Since this is more a product issue than a doc issue, I am going to #please-close this thread for now.

To request specific features, please feel free to open an issue propose them in the azure-functions-host repo.