Is it possible to apply a global filter with Carter that applies to all endpoints of all Carter modules?

[DumboJetEngine]

Is it possible to apply a global filter with Carter that applies to all endpoints of all Carter modules?

I need to post-process each endpoint's return values and modify the response accordingly. One way to do this with asp.net core minimal APIs, is to apply the filter to a MapGroup using MapGroup().AddEndpointFilter<GlobalFilter>(); and then define all endpoints on this group.

But since ICarterModule works with IEndpointRouteBuilder and not RouteGroupBuilder, I guess it is not possible to apply the filter automatically to all Carter modules?

[ritasker]

You can use the RouteGroupBuilder with MapCarter() as it inherits from IEndpointRouteBuilder. For example,

...
var global = app.MapGroup(string.Empty).AddEndpointFilter<MyGlobalFilter>();
global.MapCarter();

app.Run();

public class MyGlobalFilter(ILoggerFactory loggerFactory) : IEndpointFilter {
    private readonly ILogger<MyGlobalFilter> logger = loggerFactory.CreateLogger<MyGlobalFilter>();

    public async ValueTask<object> InvokeAsync(EndpointFilterInvocationContext context, EndpointFilterDelegate next)
    {
        this.logger.LogInformation("Before Request...");
        var result = await next(context);
        var content = JsonSerializer.Serialize(result);
        this.logger.LogInformation(content);
        this.logger.LogInformation("After Request...");
        return result;
    }
}

Which gave the following log output.

[DumboJetEngine]

@ritasker This is awesome! Thanks.