Need a way to use built-in grain directory locally

[seenu433]

When using an Azure Storage or Redis Grain Directory, it is difficult to test the code locally against the built-in directory unless the code to decorate the grain in commented or conditionally compiled. Is there an elegant way to serve this purpose.

[benjaminpetit]

That's a very good point, we should add the same config methods for the built-in directory, so you can use it with a name

[dmitrig89]

If anyone else encounters the need for this, for now it seems registering a named singleton service IGrainDirectory with the name you need and a null implementation does the trick

hostBuilder.UseOrleans(builder =>
            {
                
                    builder.ConfigureServices(services =>
                    {
                        services.AddSingletonNamedService("directory-name", (_, _) => (IGrainDirectory?)null);
                    });
                }
            });