Feature Request: Support Managed Service Identity for Storage connections

Please provide a succinct description of the issue.

Repro steps

Currently Azure Storage supports Managed Service Identity. But azure webjob sdk only spports connection string for storage account. It would be great that webjob sdk support MSI.

Known workarounds

I’ve found some workarounds by inject storage account on registering. First I need to generate the CloudStorageAccount by MSI in advance. Then, there are two services I need to inject:

var blobClient = storageAccount.CreateCloudBlobClient();
var container = blobClient.GetContainerReference("webjob-lock");

var builder = new HostBuilder()
   .ConfigureWebJobs(b =>
   {
     b.Services.AddSingleton(new DistributedLockManagerContainerProvider
     {
       InternalContainer = container
     });
     b.Services.AddSingleton<StorageAccountProvider>(new ManagedIdentityStorageAccountProvider(storageAccount));

     b.AddAzureStorageCoreServices();
     b.AddAzureStorage();
     b.AddTimers();
   })

public class ManagedIdentityStorageAccountProvider : StorageAccountProvider
{
  private readonly CloudStorageAccount storageAccount;

  public ManagedIdentityStorageAccountProvider(CloudStorageAccount storageAccount) : base(null)
  {
    this.storageAccount = storageAccount;
  }

  public override StorageAccount Get(string name)
  {
    return StorageAccount.New(this.storageAccount);
  }
}

I’m still looking for official MSI support.

[cn894]

Hi, my team is still looking for official MSI support in the SDK. Has there been any update on this issue?

[Erikvdv]

Found it in the azure functions docs: https://docs.microsoft.com/en-us/azure/azure-functions/functions-reference?tabs=blob#common-properties-for-identity-based-connections